Physics Questions

The ____ of a substance is defined as the mass per unit volume.

AC is converted into DC by a

In which of the following mentioned activities is the potential energy (P.E) converted into kinetic energy(K.E)?

A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)

If a current of 1.5 A is maintained in a resistor of 10 ohm, then the energy dissipated in the resistor in 1 minute will be 

What will be the resistance of a wire across which, when 2V potential difference is applied, 1A current flows through the wire?

If the initial velocity of a car is 5 m/s, and the final velocity is 10 m/s in 5s, then the acceleration is ___.

The kinetic energy of a ball weighing 0.5 kg moving with a velocity of 4 m/s will be