PSHS 3rd Year Physics
Batch 2013
8 Exercises on Forces
Free body diagrams
* answers still to be uploaded :)
Copyright: Young Einstein, www.yeinstein.com
Dear Students, remember that you have to be something characterized in the life!! because you are able to do that.
{My Thanks to All of You because you helped me to show this PPT in a very famous company of Smart Boards}. You can watched in YouTube Channel!
PSHS 3rd Year Physics
Batch 2013
8 Exercises on Forces
Free body diagrams
* answers still to be uploaded :)
Copyright: Young Einstein, www.yeinstein.com
Dear Students, remember that you have to be something characterized in the life!! because you are able to do that.
{My Thanks to All of You because you helped me to show this PPT in a very famous company of Smart Boards}. You can watched in YouTube Channel!
Assignment 3 (CH. 7-9)
Chapter 7
Questions (use complete sentences)
1) What is an electric field? Sketch the shape of the electric field around a single proton.
2) If a uniform electric field is pointing east, what is the direction of the force on an electron? What is the direction of force on a positive particle?
3) If electrons are flowing counter clock wise in a circuit, which way is the conventional current flowing?
4) Explain what current, voltage, and resistance are?
5) Describe the differences between circuits with resistors connected in series vs. parallel.
Problems (show your work)
1) Two charged particles exert an electrical force of 16 N on each other. What will the magnitude of the force be if the distance between them is reduced by half? What if the distance is doubled?
2) What would the separation between two particles each with a charge of 1 C have to be so that they each feel a force of 1 N.
3) A particle with a charge of 2.0 x 10-6 C experiences an upward force of 8N. What is the magnitude and direction of the electric field at that point? What if the charge was negative?
4) During 30 second of use, 250 C of charge flow through a microwave over. What is the current?
5) A current of 12 A flows through an electric heater operating on 120 V. What is the heater’s resistance?
6) The resistance of each brake light on an automobile is 6.6 Ω. Use the fact that cars have 12 V electrical systems to calculate the current that flows through each bulb.
7) An electric eel can generate a 400 V, 0.5 A shock for stunning its prey. What is the eel’s power output?
8) A clock consumes 2 W of electrical power. How much energy does it use each day?
Challenge (show work)
1) Three particles each with a charge of 2.5 x 10-6 C are located on the x-axis. There coordinates are (0,0), (2,0), and (6,0). What is the magnitude and direction of the electrical force on the particle located at (2,0)?
Chapter 8
Questions (use complete sentences)
1) Sketch the shape of the magnetic field around a bar magnet.
2) List the main type of electromagnetic waves in order of increasing frequency.
3) How does the radiation emitted by a black body change as its temperature increases?
4) What does a transformer do?
5) What are the three observations of magnetism talked about in class?
Problems (show work)
1) A cell phone charger is a transformer that reduces 120 V to 5V. For each 1,000 turns in the input coil, how many turns are there in the output coil?
2) What is the wavelength of a 60,000 Hz radio wave?
3) A transformer has an input coil of 2,000 turns, and an output coil of 500 turns. If 120 V is connected to the input coil how much voltage will it output?
4) Compute the frequency of an EM wave with a wavelength of 0.0542 m.
5) How much more energy would a black body radiate at 900 K vs 300 K?
6) What wavelength of light do humans mostly radiate if the human body temperature is 310 K?
Chapter 9
Questions (use complete sentences)
1) .
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
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Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2. Secondary 5 Physics (Question Booklet) Page 1
WQSB, June 2016
Instructions
1. Write the required information on the title page of the Student Booklet.
2. This examination consists of two parts. Part A: 10 multiple-choice questions and
Part B: 15 constructed-response questions.
3. Answer all questions in the Student Booklet, showing all your work and units.
4. You are permitted to use writing instruments and a calculator with or without
graphic display designed mainly to perform mathematical calculations.
Before the exam starts, data and programs stored in the calculator’s memory
must be deleted.
Using a calculator containing stored data or programs will be considered as
cheating.
You may not share your calculator with other students. Communication in any form
between calculators is forbidden.
Other electronic devices that have a calculator function are strictly forbidden.
5. You may refer to the information provided in the Appendix of the Question
Booklet. The use of any other reference material is strictly forbidden.
6. Hand in the Question Booklet and the Student Booklet at the end of the
examination.
NOTE: Each question is worth four marks.
Figures are not necessarily drawn to scale, unless stated.
Significant figures will not be evaluated.
Time: 3 hours
3. Secondary 5 Physics (Question Booklet) Page 2
WQSB, June 2016
PPaarrtt AA
Multiple-Choice Questions 1 to 10
Answer all questions in your Student Booklet.
1. A ray is directed towards a mirror and is reflected as shown below.
Ray Diagram
Mirror
100
What is the angle of incidence for the ray shown above?
Diagram is not to scale.
A) The angle of incidence is 40°.
B) The angle of incidence is 50°.
C) The angle of incidence is 80°.
D) The angle of incidence is 100°.
4. Secondary 5 Physics (Question Booklet) Page 3
WQSB, June 2016
2. An upright virtual image is produced by a convex lens.
Which of the following describes the proper attitude (orientation) and position of the
object?
A) The object is upright and placed beyond a focal point.
B) The object is inverted and placed beyond a focal point.
C) The object is inverted and placed between a focal point and the lens.
D) The object is upright and placed between a focal point and the lens.
5. Secondary 5 Physics (Question Booklet) Page 4
WQSB, June 2016
3. Anton and Frank are given two unidentified transparent materials labelled Material W and
Material Z. They determine experimentally how light passes through them and record their
results in the diagrams below.
They are given two other materials, labelled Material X and Material Y. They are given the
speed at which light travels through them. The speed at which light travels through
Material X is v 3.00 108
m/s and through Material Y is v 2.50 108
m/s.
Total internal reflection is achieved with a lower critical angle when the ratio between the
indices of refraction is greater.
Transparent Materials
Air
Material
Air
Material
v = 3.00 10
8
m/s v = 2.50 10
8
m/s
Material W Material X Material Y Material Z
Which material pairing will produce total internal reflection with the lowest critical angle?
A) Light travelling from Material W into Material X
B) Light travelling from Material W into Material Y
C) Light travelling from Material Z into Material X
D) Light travelling from Material Z into Material Y
6. Secondary 5 Physics (Question Booklet) Page 5
WQSB, June 2016
4. An astronaut drops a tool while performing maintenance on the lunar module on the moon.
The motion of the tool is illustrated by the position-time graph below.
What is the velocity of the tool at 1.5 seconds?
A) 7.5 m/s
B) 3.4 m/s
C) 2.4 m/s
D) 0.42 m/s
7. Secondary 5 Physics (Question Booklet) Page 6
WQSB, June 2016
5. Paul, a stationary observer, is sitting in the audience of a circus show. He sees two rolling
platforms moving along the same track. Both platforms are travelling at a constant speed
of 15 km/h in the same direction.
The first platform has two jugglers. The second platform, travelling behind the first, holds a
cannon which shoots foam balls at the jugglers. The cannon launches the balls at a speed
of 15 km/h.
At the same time, an acrobat moves horizontally on a cable at 30 km/h in the same
direction as the platforms.
The diagram below illustrates the circus show as seen by Paul.
Circus Show as Seen by Paul
Which of the following correctly states what Paul sees?
A) Paul sees the acrobat moving as fast as the cannon-fired foam balls.
B) Paul sees the jugglers moving as fast as the cannon-fired foam balls.
C) Paul sees the acrobat moving twice as fast as the cannon-fired foam balls.
D) Paul sees the jugglers moving twice as fast as the cannon-fired foam balls.
8. Secondary 5 Physics (Question Booklet) Page 7
WQSB, June 2016
6. Amy is preparing to move into a bigger apartment. She will need to move some boxes
from the kitchen to the main entrance.
Amy pushes the boxes of varying masses, but always with the same quantity of force.
Which situation will produce the greatest acceleration of the boxes?
Frictional forces are negligible.
A)
F
m
B)
F
0.2m
C)
F
2m
D)
F
4m
9. Secondary 5 Physics (Question Booklet) Page 8
WQSB, June 2016
7. Shatoya is playing outside with her new Apple Twist Skip Jumper toy. She places the
collar of the toy around her ankle and spins the toy in a circular motion. She sees that the
soft rope of the toy straightens as she spins it faster.
Shatoya Playing Outside Apple Twist Skip Jumper Diagram
Consider the following statements.
1. The centripetal force is directed towards her ankle.
2. The centripetal force is directed towards the apple.
3. The apple’s velocity is tangential to the path of the apple.
4. The apple’s velocity is directly proportional to the centripetal force.
Which of the statements above are true regarding the circular motion of the toy?
A) Statements 1 and 3
B) Statements 1 and 4
C) Statements 2 and 3
D) Statements 2 and 4
Collar
Soft rope
Apple
10. Secondary 5 Physics (Question Booklet) Page 9
WQSB, June 2016
8. A drone is taking footage of a volcanic eruption. To do this it must stay as stationary as
possible.
The drone has a mass of 0.65 kg and the wind is pushing it with a force of 7.9 N [east].
Drone Over Volcano
What forces must the drone’s propellers exert in order to maintain equilibrium?
A) The engines must exert a force of 7.9 N [east] and 0.65 N [up].
B) The engines must exert a force of 7.9 N [east] and 6.4 N [up].
C) The engines must exert a force of 7.9 N [west] and 0.65 N [up].
D) The engines must exert a force of 7.9 N [west] and 6.4 N [up].
11. Secondary 5 Physics (Question Booklet) Page 10
WQSB, June 2016
9. A robotic rover on the surface of Mars needs to make a small journey to a new site to
analyze rock samples.
To make this journey, the rover’s motor exerts a force of 2.50 kN for 2 minutes to move a
distance of 182 m.
Robotic Rover
Clipart.com
What is the power of the robotic rover’s motor during this journey?
A) 3.79 W
B) 228 W
C) 3 790 W
D) 228 000 W
12. Secondary 5 Physics (Question Booklet) Page 11
WQSB, June 2016
10. Petya is playing with a ball that has a mass of 100.0 g. She throws it straight down with a
velocity of 3.2 m/s from a height of 1.2 m. Assume friction is negligible.
What is the total mechanical energy of the ball the instant it hits the ground?
A) 0.52 J
B) 1.7 J
C) 520 J
D) 1700 J
PPaarrtt BB
Constructed-Response Questions 11 to 25
Answer questions 11 to 25 in your Student Booklet, showing all work.
13. Secondary 5 Physics (Question Booklet) Appendix
WQSB, June 2016
Appendix
Formulas and Quantities
EQUATIONS
OPTICS MECHANICS
θθ 2211 sinnsinn
o
i
o
i
d
d
h
h
M
io
111
ddf
v
c
n
t
d
v
av
t
v
a
t
vv
d
2
21
2
1 ½+ tatvd
tavv +12
davv 2
2
1
2
2
t
W
P
dFW
mghE g
2
k ½ mvE
2
e ½ xkE
maF
kxF
mgF g
r
mv
F
2
c
MATHEMATICS
a
acbb
x
2
42
PHYSICAL CONSTANTS
SYMBOL QUANTITY VALUE
c
nair
g
g
Speed of light in a vacuum
Index of refraction of air
Acceleration due to gravity (Earth)
Gravitational field strength (Earth)
m/s1000.3 8
1.00
2
m/s8.9
9.8 N/kg