Physics Past Questions and Answers

A diver is 5.2m below the surface of water of density 1000Kgm^-3. If the atmospheric pressure is 1.02 x 10⁵pa. Calculate the pressure on the diver [g = 10ms^-2]

A steel needle floating on water, sinks when kerosine is added to the water. This is because the kerosine

On which of the following factor does the viscosity of a liquid depend? i. Nature of the liquid. ii. Temperature of the liquid. iii. Area of the liquid surface

An elastic string of force constant 200N m^-1 is stretched through 0.8m within its elastic limit. Calculate the energy stored in the string

A machine of velocity ratio 5 is used in lifting a load with an effort of 500N. If the machine is 80% efficient. Determine the magnitude of load