Which changes of state are characterized by having atoms that gain energy? check all that apply. .

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 color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Describe uniform velocity and variable velocity in short