Which of the following students best describes an element?

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Will mark brainliest how many electrons can be held in the energy level n = 4?