An example of an insulator is a, rubber.
b. copper
Csilver
d. iron
Please select the best answer from the choices provided
OA
ОВ
Ос
OD

What’s #16 asking and how do i solve it?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%