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Name the energy transformation taking pl...

Name the energy transformation taking place in the following devices:
a radio

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. A ball of mass 0.5 kg slows down from a speed of 5ms^-1 to 3ms^-1, cal...

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  2. Which would have greater effect on the kinetic energy of an object-dou...

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  3. Name the energy transformation taking place in the following devices: ...

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  4. How much the work is done, when earth moves around the sun in its orbi...

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  5. A 5 kg ball is thrown upwards with a speed of 10ms^-1(g=10ms^-2) Cal...

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  6. A 5 kg ball is thrown upwards with a speed of 10ms^-1(g=10ms^-2) Fin...

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  7. Calculate the electricity bill amount for a month of April, if 4 bulbs...

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  8. An object is made to fall from different heights 20 cm, 40 cm and 60 c...

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  9. An object is made to fall from different heights 20 cm, 40 cm and 60 c...

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  10. Define power. A boy of mass 45 kg climbs up 20 steps in 20 sec. it eac...

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  11. A truck and a car are running with same velocity. Which of the tow has...

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  12. Give an example of electrical energy converted into light energy.

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  13. What are two types of potential energy? Give two examples of each.

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  14. Define K.E. and derive the expression for K.E.

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  15. The kinetic energy of a body of mass 15 kg is 30 J . What is its momen...

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  16. An object of mass 15 kg moving with a uniform velocity of 4ms^-1. What...

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  17. What is the work to be done to increase the velocity of a car form 30 ...

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  18. Find the energy possessed by an object of mass 10 kg when it is at a h...

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  19. A boy of mass 50 kg runs up a staricase of 45 steps in 9 s. If the hei...

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  20. An electric bulb of 60 W is used for 6 hours per day. Calculate the un...

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