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Study the following activity and answer the questions: At the moment of releasing the balls, which energy do the balls have?

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Study the following activity and answer the questions: What is the form of the eventual total energy of the balls?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. At the moment of releasing the balls, which energy do the balls have?

Study the following activity and answer the questions: As the balls roll down which energy is converted into which other form of energy?

Study the following activity and answer the questions: Why do the balls cover the same distance on rolling down?

Study the following activity and answer the questions: Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance.

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. As the balls roll down which energy is converted into which other form of energy?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. Why do the balls cover the same distance on rolling down?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. What is the form of the eventual total energy of the balls?

Questions based on paragraph Study the following activity and answer the questions. Take two aluminium channels of different lengths. Place the lower ends of the channels on the floor and hold their upper ends at the same height. Now take two balls of the same size and weight and release them from the top end of the channels. They will roll down and cover the same distance. Which law related to energy does the above activity demonstrate? Explain.

Study the figure and answer the following question: Label the main parts of telescope.

BAL BHARTI-WORK AND ENERGY-Exercises
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  2. Choose one or more alternatives: Power is a measure of the ………

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  3. Choose one or more alternatives: While dragging or lifting an objectm...

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  4. The potential energy of your body isleast when you are……

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  5. The total energy of an object falling freely towards the ground………………....

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  6. If we increase the velocity of a car moving on a flat surface to 4 tim...

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  7. The work done on an object does not depend on…..

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  8. Questions based on paragraph Study the following activity and answer ...

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  9. Questions based on paragraph Study the following activity and answer ...

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  10. Study the following activity and answer the questions: Now take two b...

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  11. Study the following activity and answer the questions: At the moment ...

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  12. Study the following activity and answer the questions: As the balls r...

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  13. Study the following activity and answer the questions: Why do the ball...

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  14. Study the following activity and answer the questions: What is the for...

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  15. Questions based on paragraph Study the following activity and answer ...

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  16. Solve the following examples: An electric pump has 2 kW power. How mu...

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  17. Solve the following examples: If a 1200 W electric iron is used daily...

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  18. Solve the following examples: If the energy of a ball falling from a ...

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  19. The velocity of a car increases from 54 km/hr to 72 km/hr. How much is...

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  20. Solve the following examples: Ravi applied a force of 10 N and moved ...

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