10 Select the correct answer.
When a cup is placed on a table, which force prevents the cup from falling to the ground?
O A gravitational force
OB.
normal force
Ос.
resistance force
OD
tension force

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?