A nitrogen molecule with a mass of 4.7x10^-26 kg, moving at 550 m/s, strikes the wall of a container and bounces back at the same speed. a. What is the molecule's impulse on the
wall?
b. If there are 1.5x10^23 of the collisions each second, what is the average force on the wall?

How do hydroponic plants differ from nonhydroponic plants? a.) hydroponic plants can grow in a dryer soil. nonhydroponic plants grow in moist soil. b.) hydroponic plants grow on other plants and are known as air plants. nonhydroponic plants do not grow on other plants. c.) hydroponic plants can only grow in rain forests. nonhydroponic plants cannot grow in rain forests. d.) hydroponic plants are grown without soil. nonhydroponic plants are grown in soil.

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?