Atable exerts a 4.0 newton force on a book which lies at rest on its top. the force exerted by the book on the table is

0.0 n
2.0 n
4.0 n
8.0 n

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.

The necleus of an atom is made up of what subatomic particles?

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors