Which energy transformation occurs in an
operating electric motor?
(1) electrical → mechanical
(2) mechanical → electrical
(3) chemical → electrical
(4) electrical → chemical

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

What are atoms of the same element with varying number of neutrons