Heater supplies 80 J of energy to a block of metal. The temperature of the block rises by 20 °C. What happens to the block of metal when its temperature falls by 10°C?
Its internal energy increases by 40 J.
Its internal energy decreases by 40 J.
Its internal energy decreases by 160 J.
Its internal energy increases by 160 J.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

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.

For this car, predict the shape of a graph that shows distance (x) versus time (t). note that time is the independent variable and will be on the bottom axis. need asap