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(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.
Give one example to show the conversion of potential energy to kinetic energy when put in use.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
State the energy changes in the following case while in use:
an electric cell in a circuit
Select the renewable and non-renewable sources of energy from the following:
Oil
What is ocean? Explain in brief.
Identify the type of energy possessed by the body in each of the following:
(a) A coiled spring of the toy car
(b) A hammer which is raised
(c) A stone shot from a catapult
(d) Water stored in the overhead tank
(e) A tadpole moving in water.
Give three examples of bodies possessing kinetic energy.
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
When and why do clothes smell of naphthalene?
