What is the amount of mass in a given volume called?

Identify the amplitude on the diagram and give the correct description. question 3 options: a because amplitude is the distance from wave crest to wave crest. b because the wavelength shows amplitude. c because amplitude is the distance between a crest (or trough) and rest. d because wavelength show amplitude. (brainiest if you get it right! ) ~kayla

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

What types of radiation make up the electromagnetic spectrum?