107 grams of liquid water are in a cylinder with a piston maintaining 1 atm (101325 pa) of pressure. it is exactly at the boiling point of water, 373.15 k. we then add heat to boil the water, converting it all to vapor.

the molecular weight of water is 18 g/mol and the latent heat of vaporization is 2260 j/g.

1) how much heat is required to boil the water?

2) assume that the liquid water takes up approximately zero volume, and the water vapor takes up some final volume vf. you may also assume that the vapor is an ideal gas. how much work did the vapor do pushing on the piston?

3) how much did the water internal energy change?

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.