List the number of protons neutrons and electrons in each pair of isotopes

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Am i correct on these two physics questions?

Carmen is load furniture and boxes onto a moving truck. she picks up boxes of her things, places them on a cart, and pushes the cart to the moving van. which term best describes the type of force carmen uses? a. contact b. friction c. gravity d. noncontact