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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.
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उत्तर
(i) The conversion of part of the energy into an undesirable form is called dissipation of energy.
(ii) For a given height h, more the length l of the inclined plane, lesser will be the effort required.
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संबंधित प्रश्न
Define calorific value of a fuel.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
A light mass and a heavy mass have equal momentum. Which will have more kinetic energy?
(Hint : Kinetic energy K = P2/2m where P is the momentum.)
What is tidal? Explain in brief.
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
Give three examples of bodies possessing kinetic energy.
State the energy changes which take place when:
A magnesium ribbon burns in air.
Give one example when:
Chemical energy changes to light energy.
A good fuel should possess:
