A bullet having mass of 10 gm and moving with a speed 1.5 m/s penetrates a thick wooden plank of 90 gm. The plank was initially at the rest . the bullet get embedded in the plank .

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Most short-period comets do not have randomly oriented orbits because

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell