The document discusses various topics related to work, energy, and power. It defines key terms like work, force, kinetic energy, potential energy, and mechanical energy. It provides examples of different types of energy like heat energy, chemical energy, electrical energy, and nuclear energy. The document also contains sample questions to test understanding of concepts like work done, conservation of energy, forms of energy, and the definition and calculation of power.
ito na ung hinihingi po ninyo sa physics.
sensya na talga hindi ko masagutan ng maayos ung tanong . kaya yan lang sagot ko. kopyahin niyo kung gusto nyo. hindi ko sinisiguradong tama mga sagot ko ah.
ito na ung hinihingi po ninyo sa physics.
sensya na talga hindi ko masagutan ng maayos ung tanong . kaya yan lang sagot ko. kopyahin niyo kung gusto nyo. hindi ko sinisiguradong tama mga sagot ko ah.
Work, Energy and Power - Unit 4 - Science (Class 9)YEP Nepal
This teaching Material is for Grade - 9 Science. Here we are trying to cover Machine from Unit 3. We provide teaching material at no cost. Please don't forget to recommend/reference our teaching Material after use.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
2. In this chapter you will come across
following terms
Work
Force
Kinetic energy
Potential Energy
Mechanical energy
Heat energy, chemical energy, Electrical
energy , Nuclear energy
Power
6. Instruction
Just click on the answer you find correct
Then you will be directed forward
If you answer correctly you will move forward
If your answer is wrong you will be directed towards concerned video or
file then make sure every time you go back and answer correctly and then
move forward
Start here….
7. Q1.In case of negative work the angle between
the force and displacement is
(a) 00 °
(b) 450°
(c) 900 °
(d ) 180°
10. Q2. The work done on an object does not depend
upon the
(a) displacement
(b) force applied
(c) angle between force and displacement
(d) initial velocity of the object
13. Q3. A body of mass 15 kg undergoes downward
displacement of 40 m under the effect of
gravitational force. Calculate work done (g = 10
m/s2
Acceleration a= g = 10 m/s2 , mass m = 15 kg
displacement s = 40 m
a)-6000 J
b) 6000 J
c) 600 J
d) 0 J
16. Q4. A body of mass 120 g is taken vertically
upwards to reach the height of 5m. Calculate
work done (g = 10 m/s2)
a) 6 J
b) 600 J
c) 0.6 J
d) - 6 J
27. Q7. A car is accelerated on a levelled road and
attains a velocity 4 times of its initial velocity. In
this process the potential energy of the car
(a) does not change
(b) becomes twice to that of initial
(c) becomes 4 times that of initial
(d) becomes 16 times that of initial
33. Q9. A body is falling from a height h. After it has
fallen a height h/2 , it will possess
(a) only potential energy
(b) only kinetic energy
(c) half potential and half kinetic energy
(d) more kinetic and less potential energy
36. Q10. When a body falls freely towards the earth,
then its total energy
(a) increases
(b) decreases
(c) remains constant
(d) first increases and then decreases
45. Q 13. A body of mass 10 kg performs motion
along a circle of radius 5m with speed of 10
m/s. Work done during one revolution is ......
(A)2000 J
(B)1000 J
(C)500 J
(D) zero
49. Q14. 1 kWh= ........... J
(A)36 X 106
(B)3.6 X 106
(C) 3.6 X 107
(D) 3.6 X l05
50.
51.
52. Q 15.A boy of mass 40 kg climbs a staircase of
30 steps, each of 0.2m height, in 30 s. Calculate
power (g = 9.8 m/s2)
a. 8 W
b. 80 W
c. 18 W
d. 9 W
53.
54.
55. Q 16. Engine of a car of mass 1500 kg, keeps car
moving with constant velocity 5m/s. If
frictional force is 1000 N, power of engine is
...............
(A)5 kW
(B) 7.5 kW
(C)15 kW
(D) 75 kW
56.
57.
58. Q 17.Height of water dam in hydroelectric power
station is 20 m. How much water, in 1 second,
should fall on turbine, so that 1MW power is
generated ? (g = 10m/s2)
(A)5000 kg
(B)10,000 kg
(C)500 kg
(D)7,500 kg
62. Q 18.The law of conservation of energy is a
statement that
A) energy must be conserved and you are
breaking a law if you waste energy.
B) the supply of energy is limited so we must
conserve.
C) the total amount of energy is constant.
D) energy cannot be used faster than it is
created.
63.
64.
65. Q 19. The kinetic energy associated with the
random motion of the constituent particles of a
body, is known as
a) Heat Energy
b) Internal Energy
c) Nuclear Energy
d) None of the above
66.
67.
68. Q 20.Mass and energy are mutually
convertible according to the following relation
a) M= EC2
b) E = mc2
c) E = 1/2mc2
d) None of the above