Ahand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 31.0 cm.
(a) how much work (j) do you do in one stroke if the average gauge pressure is 2.40 multiplied by 105 n/m2 (about 35 psi)? (you may consider this an isothermal process.)
(b) what average force(n) do you exert on the piston, neglecting friction and gravity?
give me the steps.

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

At the negative terminal of the battery the electron has electric potential energy. what happens to this energy as the electron jumps from the negative to the positive terminal?

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.