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grain is pored into a silo to be stored for later use. due to the friction between pieces of grain as they rub against eachother during the pouring process, one piece of grain picks up a charge of 6.0e-10c and another piece of grain picks up a charge of 2.3e-15c. what is the electric force between them if the pieces are 2 cm apart?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

In a system, when potential energy decreases, then entropy also decreases. true false

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.