Question

23. (a) What is the kinetic energy of an object?
(b) Write the expression for the potential energy of an object.
(C) Alamp consumes 15001 of electrical energy in 30 sec, what is its power
unhalla nf eravitation. Mention four phenomenon which can be expla​

Answer 1

Explanation:

An object increases its energy when raised through a height. This is because work is done on it against gravity while it is being raised. The energy present in such an object is the gravitational-potential energy. This gravitational-potential energy of an object at a point above the ground is defined as the work done in raising it from the ground to that point against gravity.

An object of mass m, when raised through a height h from the ground, then work done by this object will be

W = force x displacement = mg x h = mgh

Answer 2

Answer:

23 (a)

ans :- kinetic energy is the energy of mass in motion the kinetic energy of an object is the energy it has because of its motion.

hope this help you