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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 force is in Newton The buoyant (upward) force exerted by water on a submerged object is given by the formula F= ?Vg, where ? is the density of water (1.0 x 10 3 kg/m 3 ),
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Action and reaction are always equal and opposite.Then,how does a body moves?
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Get expression for intensity of the diffracted beam by single slit. Explain the position of minima and maxima.
Vgs= -1.5 v Idss= 10 mA Vp = - 4 v Ids = ? Vds = ?
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