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प्रश्न
Fill in the boxe to show the corresponding energy transformation.
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उत्तर
Electrical energy ⇌ Heat energy
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संबंधित प्रश्न
Define 1 J of work.
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?
Determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied force.
State the energy changes which take place when A piece of magnesium wire is burnt in a jar of oxygen.
A man climbs a slope and another walks same distance on level road. Which of the two expends more energy and why?
A block of mass 30 kg is pulled up a slope, as shown in diagram with a constant speed, by applying a force of 200 N parallel to slope.
A and B are initial and final positions of block.
(i) Calculate the work done by force in moving the block from A to B.
(ii) Calculate P.E. gained by block. [g=10ms-2]
One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.
What is power? How do you differentiate kilowatt from kilowatt-hour? The Jog Falls in Karnataka state are nearly 20 m high. 2000 tonnes of waterfalls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s–2)
