Amachine accelerates a 5 kg missile from rest to a speed of 5 km/s. the net force accelerating the missile 500,000 n. how long does it take to arrive at the speed of 5 km/s?

What are atoms of the same element with varying number of neutrons

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9