If the mass of the electron is reduced to half the Rudberg constant

A satellite is orbiting at a certain height in a circular orbit. If the mass of the planet is reduced to half the initial value, then the satellite would

A satellite is orbiting at a certain height in a circular orbit. If the mass of the planet is reduced to half the initial value, the satellite would

In a reversible reaction, two substances are in equilibrium. If the concentration of each one is reduced to half, the equilibrium constant will be

The volume of a given mass of a gas in a vessel is reduced to half at constant temperature what is the change in pressure?