Which wave, A or B, has higher energy? O A, because it has a higher amplitude
O B, because it has a higher amplitude
x A, because it has a lower amplitude
O B, because it has a lower amplitude

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Atomic nuclei of almost all elements consist of

Coal contains energy. a. light b. kinetic c. chemical d. mechanical