Physics
Two bodies A and B have same kinetic energies. Compare their velocities if mass of A is four times the mass of B.
Related Questions
A lever is shown below.
(a) Identify the type of lever.
(b) Calculate its mechanical advantage.
Draw a graph of potential energy vs height from the ground for a body thrown vertically upwards.
A metre rod made of copper and steel as shown in the diagram. Weights of copper and steel are 10 N and 8 N respectively.
(a) On which part does the centre of gravity lie (0 to 50 or 50 to 100).
(b) Justify your answer.
Two copper wires A and B are of the same thickness and are at the room temperature. If the length of A is twice the length of B then :
(a) Compare their resistances
(b) Compare their resistivity