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प्रश्न
State the energy changes which take place when:
A magnesium ribbon burns in air.
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उत्तर
During the burning of magnesium, chemical energy changes to heat and light energy.
संबंधित प्रश्न
(i) The conversion of part of the energy into an undesirable form is called ______________.
(ii) For a given height h, __________________ the length l of the inclined plane, lesser will be the effort required.
How many MeV are equivalent to 1 atomic mass unit (u)?
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is just in the middle .
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
Select the renewable and non-renewable sources of energy from the following:
Wind
What do you understand by the potential energy of the body?
Write the type of energy possessed in the following case:
A falling apple
Give one example when:
Sound energy changes to electric energy.
Unit of calorific value of a substance is ____________.
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving bus
