A brick has a length of 8cm, a width of 3cm and a height of 2.5cm. If the mass of the brick is 360grams, what is the density of the brick?

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?

Calculate 9 ∙ 10-5 divided by 3 ∙ 10-9. (box after the "10" in answer is for the

Why would an orange roll of your cafeteria tray if you stopped suddenly