Physics Past Questions and Answers

A carpenter on top of a roof of 20.0m high dropped a hammer of mass 1.5 kg and it fell directly to the ground. the kinetic energy of the hammer just before hitting the ground is?[g = 10 ms^-2]

If a tube of small radius opened at both ends is placed in a liquid, the liquid will

An object weighs 22 kg in water and 30kg in air. what is the upthrust exerted by the liquid on the object.
[g = 10 ms²]

A metal of volume 40 cm³ is heated from 30 °c to 90 °c, the increase in volume is

A copper wire was subjected to a tensile stress of 7.7 x 10⁷ x 10 Nm^-2. calculate strain of the wire.
[young modules = 1.1 x 10¹¹ Nm^-2]