An electron emitter must have _____________ work function and ___________ melting point.
Why is a jack screw provided with a long arm?
Derive a relationship between S.I. and C.C.S. unit of work
Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.
Name the physical quantity measured in terms of horsepower.
What is the work done by the moon when it revolves around the earth?
Name a common device where a gear train is used
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?