During a warm-up, it's important to control your

a. leg muscles
b. breathing
с. вмі
d. head

Use the table to answer question 22 23 and 24.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

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