1013 - Physics Questions Answers
A GENERAL MESSAGE
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A body covers one third of its journey with speed u, next one third with speed v and last one third with speed w. calculate the average speed of the body during the entire journey.
a small ball of mass m=1 kg and charge 2/3*10^-6 is placed at the center of a uniformly charged sphere of radius 1 m and charge 1/3 mC. a narrow smooth horizontal groove is made in the sphere from the center to the surface as ahown, the sphere is made to rotate about it vertical diameter at a constant rate of 1/(2 pie) revolutions per second. find the speed with respect to ground with which the ball slides out from the groove .
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A particle moves around a circle of radius R. In moment t = 0 it was located in point O. After, its velocity changes according to Vτ = αt - βt2, where α and β - positive constants. Find the modulus of the total acceleration when particle will be in point O again.
A BAR OF IRON IS 10 CM AT 20C .AT 19C IT WILL BE
if a body loses half of its velocity on penetrating 3cm in a wooden block then how much it will penetrate more before coming to rest.
two charged particles of mass m and 2m have charges +2q and +q respectively. they are kept in a uniform electric field far away from each other and then allowed to move for some time t . find the ratio of their kinetic energy