Recent content by koolraj

Homework Statement metal cube is placed in an empty vessel. When water is filled in the vessel so that the cube is completely immersed in the water, the force on the bottom of the vessel in contact with the cube: (a) Will decrease (b) Will increase (c) Will remain same (d) Will become...

why are the orbits elliptical in shape?i know that force equations give differential equations whose solutions imply that the orbits elliptical in shape.but what is the particular physical reason behind it?

As explained by Max Plank for every orbit having two electrons in it, have 2 spins quantum numbers. And they are always 1/2 and -1/2.It just means that the two electrons move in opposite directions in orbit. Then why don’t they collide?