The electron mass is 9 ✕ 10−31 kg. What is the momentum of an electron traveling at a velocity of 0, 0, −2.4 ✕ 108 m/s?

The experiments with static charges were done by:

Apiano tuner uses a tuner to create a tone of 5.00 x 10² hz. when a key on the piano is struck he hears 5 beats per second. what is a possible frequency of vibration for the piano string? 2500 hz 1300 hz 605 hz 495 hz

What are the three ways that an object can accelerate