The image above shows the nucleus of a nitrogen atom. how can the atomic number of nitrogen be determined?
a. count the humber of neutrons
b. count the number of protons
c. add the number of protons and neutrons
d. count the number of electrons

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

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