Physics Past Questions and Answers

The pair of physical quantities consisting of vectors only are

In an ideal wheel an axle system, R stand for the radius of the wheel and r is the radius of the axle. the mechanical advantage is

An object is projected for the hieght of 80 m above the ground with a velocity of 40ms^-1 at the angle of 30° to the horizontal. The time of flight

In an a.c circuit that contains only a capacitor, the voltage lags behind the current by

the time it will take a certain radioactive material with a half-life of 50 days to reduce to 1/32of its original number is