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The work done by a friction force is:
a) Always positive
b) Always negative
c) Always zero
d) Either positive or negative depending upon the situation.
Ans: The work done by a friction force is always negative.
The SI unit of pressure is the: a) Torr b) Dyne per centimeter squared c) Atmosphere d) Pascal Ans: The SI unit of pressure is the Pascal.
what should be the orientation of an electric dipole so that its potential enrgy is minimum
Q. An emf of 5 V is persuading when the current in the coil changes at the rate of 100 As-1. Find the coefficient of self induction. Solution: Induced emf e = - L dI/dt
Assignment of applications of elastic behaviour of materials
Determine the value of ‘a' for which the vector field is solenoidal.
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