two sphere of equal masses are placed at distance of 100m from their centres. of the gravitational force of attraction between them is 1575 N. CALCULATE THE MASS OF EACH SPHERE

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

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

What do we mean by the event horizon of a black hole?