Physics Past Questions and Answers

A force, 10N, drags a mass 10kg on a horizontal table with an acceleration of 0.2ms<sup style='font-size: smaller;'>[/sup]. If the acceleration due to gravity is 10ms[sup]-1</sup>, the coefficient of friction between the moving mass and the table is

A body whose mass is 2kg and has a volume of 500cm3 just floats when completely immersed in a liquid. Calculate the density of the liquid

The product PV where P is pressure and V is volume has the same unit as

The amount of heat needed to raise the temperature of 10kg of copper by 1k is its

A tap supplies water at 25<sup style='font-size: smaller;'>o</sup>C while another supplies water at 75<sup style='font-size: smaller;'>o</sup>C. If a man wishes to bathe with water at 40<sup style='font-size: smaller;'>o</sup>C, the ratio of the mass of cold water to the mass of hot water required is