The capacity to do work is called
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Energy possessed by an object by its position or configuration is called
A lens has a power +2.0 D. The type of lens and its focal length will be
Light can travel ___ km in a year.
What is the upward force exerted by water called?
Which of the following coloured light has the lowest frequency?
Kinetic energy is equal to
If a body is whirled in a circle, then the work done on it ___.