ABU Physics 2020/2021 Past Questions

If the linear expansivity of a metal rod is 4 × 10^-5 per °C, what will be new length of the rod if it is heated from 115°C to 95°C from its original length of 20cm

44kj heat was used in raising the temperature of 2kg of paraffin oil from 360k to 370k. calculate the specific heat capacity of paraffin oil.

A simple machine overcomes a load 4000N when a force of 200N is applied. If the velocity ratio of the machine is 25, calculate the efficiency of the machine.

A bullet of mass 15g is fired from a riffle with a velocity m/s. If the mass of the riffle is 1kg. What is the recoil velocity of the rifle?

A ball is thrown vertically upwards with a velocity of 30m/s. Find the greatest height attained

The tension in a rope pulling a log 100N, the mass of the log is 50kg and the frictional force on the log is 20N. What is the acceleration of the log?

A body of mass 1kg falls freely from rest. Through a height of 150m. Calculate the velocity of the body when it strikes the floor (g = 10m/s²).

A magnet is moved through a coil of wire. The emf produced in the wire depends on the magnet is moved

The induced current in a coil always flows in a direction so as to oppose the change that causes it. This statement is known as

A weight of 1000 grams hangs from a lever 20cm to the right of the fulcrum. At the left is 500 gram weight, 20cm from the fulcrum and a 200gram weight is placed x cm away from the fulcrum. What is the value o f x that will make the lever balanced?