19. What is the momentum of a stationary vehicle with a mass of 123456789.0kg?

You can decrease the resistance of a length of wire by

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?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?