Physics
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

0.14 m/s
14 m/s
140 m/s
1.4 km/s

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Physics
A white and smooth surface is

Good absorber and good reflector of heat
Bad absorber and bad reflector of heat
Bad absorber and good reflector of heat
Good absorber and bad reflector of heat

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