A 12kg ball is given an initial velocity of 20m/s and then is rolled along the floor. A friction force of 5N opposes its motion. For what length of time will it roll before stopping. Thanks in advance!

Apair of 10μf capacitors in a high-power laser are charged to 1.7 kv.a. what charge is stored in each capacitor? b. how much energy is stored in each capacitor?

The speed of light can be used to measure the

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?