Acrate slides down a ramp that makes a 20∘ angle with the ground. to keep the crate moving at a steady speed, paige pushes back on it with a 76 n horizontal force. part a how much work does paige do on the crate as it slides 4.0 m down the ramp? express your answer with the appropriate units.

If steel is more dense that lake water, why can a boat float

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

How many neutrons does plutonium -196 with an atomic number of 78.