A force that tries to slow things are moving through air

If you shine red light at a green plant and green light at a green plant, knowing that a plant must absorb light to grow, which plant will grow faster?

An object travels in a circular path of radius 5.0 meters at a uniform speed of 10. meters per second. What is the magnitude of the object's centripetal acceleration? How do you know?

Water is boiling to make steam to turn a generator to send power to a house. the energy conversions

Two stars, both of which behave like ideal blackbodies, radiate the same total energy per second. The cooler one has a surface temperature T and 3.0 times the diameter of the hotter star.

What is the energy due to compressing a spring

jason hits a baseball off a tee toward right field. the ball has a horizontal velocity of 10 m/s and lands 5 meters from the tee. what is the height of the tee? show your work, including formula (s) and units.

What is the average amount of energy of motion in the particles of a substance

A race car is traveling at 76 m/s when it slows down at 9 m/s^2 for 4 seconds. What is his new velocity

Humpty Dumpty (12 kg) sat on a wall (2 m high). What was his potential energy, before his great fall? A. 235.2 J B. 235.2 N C. 24 J D. 246.1 W

Explain how we were able to boil water at room temperature