27. The Bohr m odel of the hydrogen atom includes which of the following ideas? I. The electron can orbit the nucleus only at certain distances called shells. Il. The electron emits a photon when it transitions from a higher shell toa lower shell. IlI. The first shell of a hydrogen atom contains s, p, d, and f orbitals. a. Ionly b. Il only c. Iand Il only d. I and IlIl only e. Il and IlIl only following is a valid set of
Solution
Bhors atomic model of Hydrogen atom:
1.It explain the complete spectrum of Hydrogen atom
2.The concept of electron distribution in different orbitals was introduced.
3.The electron can orbit certain orbit only at certain distance called shells.
4.It explains only single electron atoms not for multi electron atoms.
5.The electron that can emits a photon transition from higher energy shell to lower energy shell.
6.It cannot explain Hydrogen conains s,p,d and f orbitals.
Answer: C (I & II only).
.
This would enable students to explain the emission spectrum of hydrogen using the Bohr model of the hydrogen atom; calculate the energy, wavelength, and frequencies involved in the electron transitions in the hydrogen atom; relate the emission spectra to common occurrences like fireworks and neon lights; and describe the Bohr model of the atom and the inadequacies of the Bohr model.
This would enable students to explain the emission spectrum of hydrogen using the Bohr model of the hydrogen atom; calculate the energy, wavelength, and frequencies involved in the electron transitions in the hydrogen atom; relate the emission spectra to common occurrences like fireworks and neon lights; and describe the Bohr model of the atom and the inadequacies of the Bohr model.
BOHRS MODEL AND ITS LIMITATIONS,Concept of shells and subshells, dual nature of matter and light, de broglie's relationship, heisenberg uncertainty principle, concept of orbitals, rules for filling electrons in orbitals-Aufbau principle.
Pauli's exclusion principle and hunds rule, electronic configuration of atoms, stability of half filled and completely filled orbitals.
The Bohr Model of the hydrogen atom proposed that there were very spec.docxchrisflorence13710
The Bohr Model of the hydrogen atom proposed that there were very specific energy states that the electron could be in. These states were called stationary orbits or stationary states. Higher energy states were further from the nucleus. These orbits were thought to be essentially spherical shells in which the electrons orbited at a fixed radius or distance from the nucleus. The smallest orbit is represented by n=1, the next smallest n-2, and so on, where n is a positive integer representing the shell or orbit. What is the radius of the n 5 orbit for Hydrogen (2 1)? Submit Answer Incorrect. Tries 2/10 Previous Tries Each shell has a very specific energy. Note that the energy of zero is used to represent the level at which an electron becomes unbound from the nucleus and can fly free. The energies for the Bohr orbits are all negative, which means they are all shells in which the electron is bound in orbit around the nucleus. What is the energy for the n-2 Bohr orbit for Hydrogen (Z-1) expressed in Joules? (do not enter units) Submit Answer Tries o/10 what is the energy for the n=2 Bohr orbit for Hydrogen (Z=1) expressed in eV? (do not enter units) Submit Answer Tries 0/1O job of calculating the energy levels for lons that are hydrogen-like, meaning they may have more protons in the nucleus, but they only have one electron. Examples would be He The Bohr Model does a good LI+2, Bet3 What is the radius of the n-5 Bohr orbit for B4 (Boron, Z-5)? Submit Answer Tries 0/10 What is the energy of the n-2 Bohr orbit for Be+3 (Beryllium, Z-4)? You can use your choice of energy units. Make sure to enter units this time Submit Answr Tries 0/10
Solution
part a:
bohr radius of nth orbit for hydrogen is given by
r=4*pi*epsilon*(h/(2*pi))^2*n^2/(m*e^2)
where epsilon=electrical permitivity=8.85*10^(-12)
h=planck’s constant=6.626*10^(-34)
m=mass of electron=9.1*10^(-31) kg
e=magnitude of charge on electron=1.6*10^(-19) C
r=5.3090*10^(-11)*n^2
for n=5, radius =1.3272 nm
part b:
energy is given by -13.6/n^2 eV
for n=2, energy=-3.4 eV
=-5.44*10^(-19) J
part c:
energy in eV=-3.4 eV
part d:
radius for hydrogen like ions=a0*n^2/Z
where a0=5.3090*10^(-11) m
for Boron ion, Z=5
hence for n=5,radius=0.26545 nm
part e:
energy for hydrogen like ion=-13.6*Z^2/n^2
using Z=4 and n=2
energy value=-13.6*4^2/2^2=-54.4 eV
.
This presentation is specially made for the students of grades 11 and 12 of High School. This is the presentation of chapter Atomic Structure with proper diagrams, figures, facts, mnemonics, and some repeated past questions. Here you will get a chance to know about Atomic theory, Daltons Law, particles and so on.
DQuestion 23 10 pts Explain how the de Broglie wavelength is related t.docxrtodd615
DQuestion 23 10 pts Explain how the de Broglie wavelength is related to the stability of the electron orbit in the atom
Solution
The Bohr model for the atom, proposed by Niels Bohr in 1913, had negatively charged particles called electrons orbiting around the positively charged nucleus in fixed circular orbits.
Orbits close to the nucleus were of less energy than orbits further away from the nucleus.
This model was designed to explain the hydrogen emission spectrum, which it did quite well, but it was an uncomfortable mix of classical physics and the quantisation of energy.
It did not answer the question of why electrons should move in circular orbits at fixed distances from the nucleus.
In 1905, Albert Einstein showed that light could be considered as both a wave and a particle. This is referred to as the wave-particle dualism of radiation.In 1924, French physicist Louis de Broglie suggested that particles might also have a wave-particle dualism and sometimes act as waves.
He said that the wavelength (?) of a particle should be inversely proportional to both the :
Increasing the mass of a particle reduces its wavelength. Increasing the speed of a particle reduces its wavelength (and thereby increases its frequency) In the Bohr model of the atom, an electron close to the nucleus has less energy (lower speed) than an electron further from the nucleus (faster moving electron).If electrons can be considered as a wave, then an electron close to the nucleus would have a longer wavelength than an electron further from the nucleus.
Louis de Broglie realized that if an electron is confined to an orbit around the nucleus, standing waves would be set up, that is, the orbit of an electron would correspond to a fixed whole number of wavelengths for the electron. Fractions of wavelengths are not allowed. You can have 1 wavelength or 2 wavelengths, but you can\'t have ½ a wavelength nor can you have 1.75 wavelengths. 2
Close to the nucleus, n=1 of the Bohr model, the energy of the electron provides for an orbit corresponding to 1 wavelength. The next orbit, n=2, corresponds to an orbit two wavelengths long. Then the n=3 orbit can fit three wavelengths, etc
Bohr’s theory works! It generates the correct formula for the energy levels in a hydrogen atom. This is because the Bohr postulate: inadvertently makes use of the de Broglie wave associated with an electron. m o vr = n (h/2?) Supposing the classical orbit is circular, let’s look at that the associated de Broglie wave following the motion: in order for the wave to return to its initial value (i.e. we are requiring that the wave be single valued), we must have 2?r = circumference = n ?
.
In scilab Write a function named countDown that accepts a total time T.docxcarold12
In scilab Write a function named countDown that accepts a total time T in seconds and displays the time remaining after half of the previously displayed time has elapsed as described below. The function should also accept an integer Steps as also described below. The function should immediately display the value of T, then wait T/2 seconds before displaying the value of T/2. It should then wait T/4 seconds and display the value of T/4, etc. This should continue until only 1/2Steps of the original time remains, at which point it waits for the this remaining time, displays a 0 and emits an audio tone.
Solution
Solution: See the code below:
------------------------------------------
function countDown(T,steps)
time=T;
while time > (0.5*steps)
disp(time);
time=time/steps;
sleep(time*1000)
end
sleep(time*1000);
disp(\"0\");
beep();
endfunction
countDown(20,2)
-------------------------------------
.
In managing processes within organizations- what type(s) of methodolog.docxcarold12
In managing processes within organizations, what type(s) of methodology can be implemented in order to become more efficient and cost effective? Please describe each methodology(s) briefly.
Solution
Knowledge management is the art of performing knowledge actions such as organizing, blocking, filtering, storing gathering, sharing, disseminating and using knowledge objects such as data, information, experiences, evaluations, insights, wisdom and initiatives. In general terms it is the performance of knowledge actions on knowledge objects (Sivan, 2001) as shown in the Figure 1.
Knowledge management = Knowledge Actions
.
More Related Content
Similar to 27- The Bohr m odel of the hydrogen atom includes which of the followi.docx
BOHRS MODEL AND ITS LIMITATIONS,Concept of shells and subshells, dual nature of matter and light, de broglie's relationship, heisenberg uncertainty principle, concept of orbitals, rules for filling electrons in orbitals-Aufbau principle.
Pauli's exclusion principle and hunds rule, electronic configuration of atoms, stability of half filled and completely filled orbitals.
The Bohr Model of the hydrogen atom proposed that there were very spec.docxchrisflorence13710
The Bohr Model of the hydrogen atom proposed that there were very specific energy states that the electron could be in. These states were called stationary orbits or stationary states. Higher energy states were further from the nucleus. These orbits were thought to be essentially spherical shells in which the electrons orbited at a fixed radius or distance from the nucleus. The smallest orbit is represented by n=1, the next smallest n-2, and so on, where n is a positive integer representing the shell or orbit. What is the radius of the n 5 orbit for Hydrogen (2 1)? Submit Answer Incorrect. Tries 2/10 Previous Tries Each shell has a very specific energy. Note that the energy of zero is used to represent the level at which an electron becomes unbound from the nucleus and can fly free. The energies for the Bohr orbits are all negative, which means they are all shells in which the electron is bound in orbit around the nucleus. What is the energy for the n-2 Bohr orbit for Hydrogen (Z-1) expressed in Joules? (do not enter units) Submit Answer Tries o/10 what is the energy for the n=2 Bohr orbit for Hydrogen (Z=1) expressed in eV? (do not enter units) Submit Answer Tries 0/1O job of calculating the energy levels for lons that are hydrogen-like, meaning they may have more protons in the nucleus, but they only have one electron. Examples would be He The Bohr Model does a good LI+2, Bet3 What is the radius of the n-5 Bohr orbit for B4 (Boron, Z-5)? Submit Answer Tries 0/10 What is the energy of the n-2 Bohr orbit for Be+3 (Beryllium, Z-4)? You can use your choice of energy units. Make sure to enter units this time Submit Answr Tries 0/10
Solution
part a:
bohr radius of nth orbit for hydrogen is given by
r=4*pi*epsilon*(h/(2*pi))^2*n^2/(m*e^2)
where epsilon=electrical permitivity=8.85*10^(-12)
h=planck’s constant=6.626*10^(-34)
m=mass of electron=9.1*10^(-31) kg
e=magnitude of charge on electron=1.6*10^(-19) C
r=5.3090*10^(-11)*n^2
for n=5, radius =1.3272 nm
part b:
energy is given by -13.6/n^2 eV
for n=2, energy=-3.4 eV
=-5.44*10^(-19) J
part c:
energy in eV=-3.4 eV
part d:
radius for hydrogen like ions=a0*n^2/Z
where a0=5.3090*10^(-11) m
for Boron ion, Z=5
hence for n=5,radius=0.26545 nm
part e:
energy for hydrogen like ion=-13.6*Z^2/n^2
using Z=4 and n=2
energy value=-13.6*4^2/2^2=-54.4 eV
.
This presentation is specially made for the students of grades 11 and 12 of High School. This is the presentation of chapter Atomic Structure with proper diagrams, figures, facts, mnemonics, and some repeated past questions. Here you will get a chance to know about Atomic theory, Daltons Law, particles and so on.
DQuestion 23 10 pts Explain how the de Broglie wavelength is related t.docxrtodd615
DQuestion 23 10 pts Explain how the de Broglie wavelength is related to the stability of the electron orbit in the atom
Solution
The Bohr model for the atom, proposed by Niels Bohr in 1913, had negatively charged particles called electrons orbiting around the positively charged nucleus in fixed circular orbits.
Orbits close to the nucleus were of less energy than orbits further away from the nucleus.
This model was designed to explain the hydrogen emission spectrum, which it did quite well, but it was an uncomfortable mix of classical physics and the quantisation of energy.
It did not answer the question of why electrons should move in circular orbits at fixed distances from the nucleus.
In 1905, Albert Einstein showed that light could be considered as both a wave and a particle. This is referred to as the wave-particle dualism of radiation.In 1924, French physicist Louis de Broglie suggested that particles might also have a wave-particle dualism and sometimes act as waves.
He said that the wavelength (?) of a particle should be inversely proportional to both the :
Increasing the mass of a particle reduces its wavelength. Increasing the speed of a particle reduces its wavelength (and thereby increases its frequency) In the Bohr model of the atom, an electron close to the nucleus has less energy (lower speed) than an electron further from the nucleus (faster moving electron).If electrons can be considered as a wave, then an electron close to the nucleus would have a longer wavelength than an electron further from the nucleus.
Louis de Broglie realized that if an electron is confined to an orbit around the nucleus, standing waves would be set up, that is, the orbit of an electron would correspond to a fixed whole number of wavelengths for the electron. Fractions of wavelengths are not allowed. You can have 1 wavelength or 2 wavelengths, but you can\'t have ½ a wavelength nor can you have 1.75 wavelengths. 2
Close to the nucleus, n=1 of the Bohr model, the energy of the electron provides for an orbit corresponding to 1 wavelength. The next orbit, n=2, corresponds to an orbit two wavelengths long. Then the n=3 orbit can fit three wavelengths, etc
Bohr’s theory works! It generates the correct formula for the energy levels in a hydrogen atom. This is because the Bohr postulate: inadvertently makes use of the de Broglie wave associated with an electron. m o vr = n (h/2?) Supposing the classical orbit is circular, let’s look at that the associated de Broglie wave following the motion: in order for the wave to return to its initial value (i.e. we are requiring that the wave be single valued), we must have 2?r = circumference = n ?
.
In scilab Write a function named countDown that accepts a total time T.docxcarold12
In scilab Write a function named countDown that accepts a total time T in seconds and displays the time remaining after half of the previously displayed time has elapsed as described below. The function should also accept an integer Steps as also described below. The function should immediately display the value of T, then wait T/2 seconds before displaying the value of T/2. It should then wait T/4 seconds and display the value of T/4, etc. This should continue until only 1/2Steps of the original time remains, at which point it waits for the this remaining time, displays a 0 and emits an audio tone.
Solution
Solution: See the code below:
------------------------------------------
function countDown(T,steps)
time=T;
while time > (0.5*steps)
disp(time);
time=time/steps;
sleep(time*1000)
end
sleep(time*1000);
disp(\"0\");
beep();
endfunction
countDown(20,2)
-------------------------------------
.
In managing processes within organizations- what type(s) of methodolog.docxcarold12
In managing processes within organizations, what type(s) of methodology can be implemented in order to become more efficient and cost effective? Please describe each methodology(s) briefly.
Solution
Knowledge management is the art of performing knowledge actions such as organizing, blocking, filtering, storing gathering, sharing, disseminating and using knowledge objects such as data, information, experiences, evaluations, insights, wisdom and initiatives. In general terms it is the performance of knowledge actions on knowledge objects (Sivan, 2001) as shown in the Figure 1.
Knowledge management = Knowledge Actions
.
in Java For any element in keysList with a value greater than 100- pri.docxcarold12
in Java For any element in keysList with a value greater than 100, print the corresponding value in itemsList, followed by a space. Ex: If keysList = {42, 105, 101, 100} and itemsList = {10, 20, 30, 40}, print:
import java.util.Scanner;
public class ArraysKeyValue {
public static void main (String [] args) {
final int SIZE_LIST = 4;
int[] keysList = new int[SIZE_LIST];
int[] itemsList = new int[SIZE_LIST];
int i = 0;
keysList[0] = 42;
keysList[1] = 105;
keysList[2] = 101;
keysList[3] = 100;
itemsList[0] = 10;
itemsList[1] = 20;
itemsList[2] = 30;
itemsList[3] = 40;
/* Your solution goes here */
System.out.println(\"\");
return;
}
}
Solution
/* Your solution goes here */:
for(i = 0; i < keysList.length; i++)
if(keysList[i] > 100)
System.out.print(itemsList[i]+\" \");
.
In Iate 2012- the Micklaus Corporation was formed- The corporate chart.docxcarold12
In Iate 2012. the Micklaus Corporation was formed. The corporate charter authorizes the issuance of 6.030,330 shares of common stock carrying a SI par value, and 2,000,000 shares of $5 par value, noncumulative. nonparticipating preferred stock. On January 2. 2013, 4,000.000 shares of the common stock are issued in exchange for cash at an average price of $10 per share. Also on January 2, all 2,000,000 shares of preferred stock are issued at 520 per share. Required: 1. Prepare journal entries to record these transactions. (If no entry is required for a particular transaction, select ?No journal entry required? in the first account field. Enter your answers in whole dollars.) 2. Prepare the shareholders equity section of the Nicklaus balance sheet as of March 31, 2013. Assume net income for the first quarter 2013 was $1,750,330.) (Enter your answers in whole dollars.) Shareholder\'s equity Total shareholder\'s equity
Solution
1.
2. Ncklaus Corporation
Balance sheet - Shareholders\' Equity section
March 31, 2013
.
In Fall 1999- people in the financial community were making their fina.docxcarold12
In Fall 1999, people in the financial community were making their final plans for the beginning of the year 2000. Everyone was concerned about the Y2K problem. The primary concern was that public would panic and remove significant amount of cash from banks.
a. What would the effect of removing cash from banks be on the following: the monetary base, the money multiplier and the money supply? Explain
b. Explain the banking system response to the expected event?
c. Explain the Fed response to the expected event
Solution
a. when majority of the money is drawn from banks, banks need huge physical money which is not possible to supply. because in every economy banks holds physical cash very limit and they hold assets interms of cheqes and other forms.
money supply falls, and the demand is high for physical money
b. banks are reacted in planned way, and they provided maximum amount of money to the depostiers.
c. Fed feared to supply physical money to meat the market demand.
.
In its income statement for the year ended December 31- 2014- Gavin Co.docxcarold12
In its income statement for the year ended December 31, 2014, Gavin Company reported the following condensed data.
Prepare a multiple-step income statement. (List other revenues before other expenses.)
Solution
INCOME STATEMENT PARTICULARS AMOUNT AMOUNT Sales Revenue         3,845,400 Sales Discount             278,400 Net Sales         3,567,000 COGS         1,717,380 Gross Profit         1,849,620 Operating Expenses Salary and Wages             809,100 Depreciation             539,400 Utilities             191,400 Total         1,539,900 Operaing Profit             309,720 Other Income Interest Expenses             123,540 Intrest Income           (113,100) Loss on Disposal of Plant Assets             145,290 Total             155,730 Earning Before Taxes             153,990 Income Tax               43,500 Net Income             110,490
.
in thin layer chromatography aspirin and caffeine were used as spot- u.docxcarold12
in thin layer chromatography aspirin and caffeine were used as spot. under uv light they appear as dark dots. why do they appear as dark dots? but aspirin is a fluorescent molecule should it fluoresce? is it something to do with the fluorescent indicator? can someone explain in details if possible. thank you
Solution
They appear as dark dots because the analytes that absorb UV quench the fluorescence and appear as dark
spots in the glowing green background.
Aspirin is a fluorescent molecule but it does not ehibit adequate fluorescence .
Yes , we can do something to do with the fluorescent indicator. Fluorescent indicators are added to the plate .This
indicator absorbs and emits UV light, which appears green. The presence of a UV active compound on the plate
prevents the UV light from reaching those parts of the plate. This results in a darker coloration on the plate. We will
be using colored compounds that are visible to the naked eye, as well as those that are visible under UV light.
.
In the USA are we currently in a period of recession or inflation- Exp.docxcarold12
In the USA are we currently in a period of recession or inflation? Explain.
Solution
At one point in time Amerca was going through a period of recession worst since the \"great depression.\" I fel as many do that recession is the worst than inflation at this time with our economy. I agreed with the late great economist Mr. Milton Freidman who advised Presidents for more than 70 years in his life time. He indicates that inflation and greed is a good thing for the economy to create jobs to IMPROVE THE ECONOMY when the economy is in a down turn. Mr. Friedman advise has stood the test of time with many Pesidents they all have seek advise from him, from (F.D.R. to G. H. Bush). He also said that America has a better economy when a Republican is President and the House is Democrat, I don\'t understand his reasoning however, I am sure he knew what is good for the country because he was in demand by the Presidents for more than 70 years. Concern Citizen,
Nearly five years later, the U.S. economy was still running 5.1 percent below potential GDP as of the first quarter of 2014 (exacerbated by a sharp contraction in GDP that quarter), down from averaging 4.5 percent in 2013. This means that less than 40 percent of the shortfall in potential output inflicted by the Great Recession has been recovered.
So currently USA is running in Inflation
.
In this Discussion- you will be able to familiarize yourself with the.docxcarold12
In this Discussion, you will be able to familiarize yourself with the rules that govern CPAs. Understanding these rules helps to ensure you provide accounting services to your clients with sound ethical and legal practices.
· Based on the scenario below, determine the violations of the AICPA Code of Professional Conduct. State which rules are violated and how the parties’ actions violated those rules.
The Blues Company hired Dan Wilson, a CPA and a member of the AICPA, to perform the financial statement audit for its current year. Halfway through the audit, the Blues Company president released Dan Wilson from the engagement due to several disputes with management. Dan Wilson was not paid for performing his part of the audit, and Dan Wilson did not give his working papers to Blues Company to use. The working papers contained several adjusting journal entries as well as company analysis, among other things that Blues Company cannot recreate.
Solution
Section 54.02- of article III integrity states that Integrity requires a member to be, among other things, honest and candid within the constraints of client confidentiality. Service and the public trust should not be subordinated to personal gain and advantage. Integrity can accommodate the inadvertent error and the honest difference of opinion; it cannot accommodate deceit or subordination of principle.
.
In the US economy we have two sectors- private and public sectors- In.docxcarold12
In the US economy we have two sectors, private and public sectors. In recession time, how can public sector help the private sector? Provide an example in the recent years. In non recession time, how can private sector help the public sector?
Solution
Public sectors are run by the Federal Government. Private sectors are run by private owner or owners.
Recession period is that period where money supply in the market is limited. There is shortage of money in the hand of people.
Public sector can help private sector in the recession period.
Example: Government can take up various construction projects. It gives job-contract and material supply contract in the market through tender quotations. Private sectors get work and get money. Money will flow in the market.
Private sector can help public sector in the non recession period.
Example: Government can issue bond in the market. Since investors have enough money in hand, they purchase bond and help government for acquiring money. Such money fulfills the government fund what was sacrificed in the recession period
.
In the traditional systems development life cycle- users- Are importan.docxcarold12
In the traditional systems development life cycle, users:
Are important and ongoing members of the development team throughout the life of the project.
Are important only in the testing phases of the project.
Have no input.
Are important only in the maintenance phase of the project.
Provide information requirements.
To form geospatial technologies, geographical information systems are combined with _____ .
dashboards
global positioning systems
decision support systems
expert systems
neural networks
Solution
Question 1
Answer: Provide information requirements.
In the traditional systems development life cycle, users Provide information requirements.
Question 2:
Answer: global positioning systems
To form geospatial technologies, geographical information systems are combined with global positioning systems
.
3) IR Spec When it comes to IR analysis- one can choose different meth.docxcarold12
3) IR Spec When it comes to IR analysis, one can choose different methods of analyzing their samples. As we have seen, you can have a dry sample ground into a KBr pellet solvent, or you can analyze a liquid sample with a salt plate (like we did for the different isomers of xylene). During our last experiment, the majority of our samples were dissolved in D,0. Why could we not use the salt plates? In other words, why was it necessary to analyze our samples as a solid sampl and use a KBr pellet? , liquid samples put into a volatile 4) Fluorimeter: How does the actual reading of a Fluorimeter differ from a UV/Vis Spec? Are experiments reproducible 100% on this instrument? why or why not?
Solution
3)
Potassium bromide is transparent from the near ultraviolet to long-wave infrared wavelengths (0.25-25 µm) and has no significant optical absorption lines in its high transmission region. It is used widely as infrared optical windows and components for general spectroscopy because of its wide spectral range.
.
3) Distinguish among various methods to implement access controlsSolut.docxcarold12
3) Distinguish among various methods to implement access controls
Solution
Answer
Generally access controls of Object oriented programing languages are public ,private, protect, default ,final, abstract .
In this we define as the final, abstract is called Non access Modifiers.
Access Modifiers are like public, private, default, protect.
Here we can use the access controls as at before the class name and method names. Generally Public can be used as the before the Class Declaration and Method Declaration. In method declaration, we can access method anywhere in the Class.
Private access is used before the variables names. We can use private as before declaration of variable in Class.
Protected this can be declared before the variable, that means it can be accessed by the that Class and its Subclasses.
Default access can be accessed that Class members and its subclasses.
Coming to the Point of Non Access modifier
Final it can be used before method name can’t be overridden.
Final it can be used before variable name can’t change.
Abstract method that not contains any defination.It can be implemented in is subclasses.
.
2D-Array How is the address of an individual element of a 2-dimensiona.docxcarold12
2D-Array
How is the address of an individual element of a 2-dimensional array computed? What if a rowpointer
layout is used instead? How does the address calculation change if the row or column
index can begin at a value other than 0?
Solution
The address of individual element in 2d array can be computed using below metods
1, Row Major System:
The address of a location in Row Major System is calculated using the following formula:
Address of A [ I ][ J ] = B + W * [ N * ( I – Lr ) + ( J – Lc ) ]
2. Column Major System:
The address of a location in Column Major System is calculated using the following formula:
Address of A [ I ][ J ] Column Major Wise = B + W * [( I – Lr ) + M * ( J – Lc )]
Where,
B = Base address
I = Row subscript of element whose address is to be found
J = Column subscript of element whose address is to be found
W = Storage Size of one element stored in the array (in byte) (Integer/float, etc)
Lr = Lower limit of row/start row index of matrix, if not given assume 0 (zero)
Lc = Lower limit of column/start column index of matrix, if not given assume 0 (zero)
M = Number of row of the given matrix
N = Number of column of the given matrix
.
28- How does the total vapor pressure (VP) and freezing point (FP) of.docxcarold12
28. How does the total vapor pressure (VP) and freezing point (FP) of pure water change when solid NaCI irs added; and when methanol, a very volatile liquid, is added? NaCI wil Methanol will A) cause the VP to drop and the FP to drop cnusic the Vi to dop and the P o B) cause the VP to rise and the FP to rise C) |cause the VP to rise and the FP to rise cause the VP to drop and the FP to rise cause the VP to rise and the FP to drop cause nse E) cause the VP to drop and the FP to drop cause the VP to rise and the FP to drop
Solution
Ans E) cause the VP to drop and the FP to drop ; cause the VP to rise and the FP to drop
The relative lowering of the vapor pressure and the depression of freezing points are the colligative properties of the solution.
Since NaCl and methanol are both solutes , so adding them into the solvent , will cause a depression in the freezing point.
NaCl being non volatile will cause relative lowering of vapor pressure , but since methanol is a volatile liquid , it will increase the vapor pressure of the solution.
.
25- Question Part Points Submissions Used 1.docxcarold12
25.
25.
Solution
25. 4/h=2/10. Cross multiply the top of one side to the bottom of the diagonal. 2*h=4*10 Get h by itself by dividing both sides by 2. h=(4*10)/2
.
3- Suppose that U-S- government actively uses the fiscal policy to fig.docxcarold12
3. Suppose that U.S. government actively uses the fiscal policy to fight against recession and rising unemployment. To incorporate this behavior of government into the model, let
Solution
Recession of 2008 was surely one of the greatest economic cycles of our lifetime.
This recession was unique in its own way, The tools that are available for fed reserve to fight recession were very limited, Usually there are two tools central banks usually have to get out of recession,
1. Lowering interest rates
2, Decreasing Cash reserve ratio
The problem with american economy was that intrest rates were already lower and further lowering them had very less impact as there were no banks in such a strong position to lend in the first place,
Decreasing cash reserve ratio was one option but it would hurt the already hurt banks baseline.
Unemployment is the immediate product of recession and people found that it is much harder to find jobs and they just went ahead and become claimants of state benefits.
Central bank did what all it can to counter recession and unemployment but their ability was limited because of structure of developed economy.
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Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
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Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
27- The Bohr m odel of the hydrogen atom includes which of the followi.docx
1. 27. The Bohr m odel of the hydrogen atom includes which of the following ideas? I. The electron
can orbit the nucleus only at certain distances called shells. Il. The electron emits a photon when
it transitions from a higher shell toa lower shell. IlI. The first shell of a hydrogen atom contains s,
p, d, and f orbitals. a. Ionly b. Il only c. Iand Il only d. I and IlIl only e. Il and IlIl only following
is a valid set of
Solution
Bhors atomic model of Hydrogen atom:
1.It explain the complete spectrum of Hydrogen atom
2.The concept of electron distribution in different orbitals was introduced.
3.The electron can orbit certain orbit only at certain distance called shells.
4.It explains only single electron atoms not for multi electron atoms.
5.The electron that can emits a photon transition from higher energy shell to lower energy shell.
6.It cannot explain Hydrogen conains s,p,d and f orbitals.
Answer: C (I & II only).
