When a wire is made smaller, the resistance increases. which happens to the electric current?
a. it decreases.
b. it increases.
c. it stays the same.

Aman does 500 j of work pushing a car a distance of 2 m. how much force does he apply? assume there is no friction. a. 250 n b. 1000 n c. 125 n d. 500 n

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

To fully describe the photoelectric effect, scientists must consider which of the following to be quantized? o a. both light and matter o b. matter only o c. light only o d. neither light nor matter