Define the following.
(a) what is energy?
(b) what is work?
(c) different between potential energy, gravitational potential energy, elastic energy, chemical energy?
(d) what is kinetic energy?
(e) what is sound energy?
Answers
Answer:
Explanation:
a) In physics, energy is the quantitative property that must be transferred to a body or physical system to perform work on the body, or to heat it.
b) W=Fs Work = Force and Displacement
c) Gravitational potential energy increases as weight and height increases. Potential energy is energy that is stored in an object or substance. ... Elastic potential energy is energy stored in objects that can be stretched or compressed.
d) energy which a body possesses by virtue of being in motion.
e) Sound Energy- is produced when an object is made to vibrate. Sound energy travels out as waves in all directions. Sound needs a medium to travel through, such as air, water, wood, and even metal! Examples: Voices, whistles, horns and musical instruments.
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Explanation:
Energy-In physics,the capacity for doing work,such as the capacity to move an object by the application of force.
Work- the force causing the movement or displacement of an object. Formula- W=FD. The S.I. of work is joule
