Suppose [Q]×105 J of energy are transferred to [m] kg of ice at 0 oC. The heat of fusion of water is Lf = 3.33 × 105 J/kg. Calculate the energy required to melt all the ice into liquid water. Express your answer in kJ. 1 kJ = 103 J.

Suppose a wheel is initially rotating at 10.0 rad/s while undergoing constant angular acceleration reaching a speed of 30.0 rad/s after 24.0 seconds have elapsed. How long after the initial time has the wheel undergone half of the angular displacement that it will have gone through during the entire 24.0-second interval?

Suppose [Q]×105 J of energy are transferred to [m] kg of ice at 0 oC. The heat of fusion of water is Lf = 3.33 × 105 J/kg. How much energy remains to raise the temperature of the liquid water? Express your answer in kJ. 1 kJ = 103 J.

A solar heated house loses about 5.2 × 107 cal through its outer surfaces on a typical 24-h winter day. What mass of storage rock is needed to provide this amount of heat if it is brought up to initial temperature of 58°C by the solar collectors and the house is maintained at 20°C? (Specific heat of rock is 0.21 cal/g⋅°C.)

A physics student is riding on a train traveling north. Having read about inertia, the student performs an experiment with a golf ball. He reaches over the aisle and drops the ball from rest. Instead of hitting the floor directly below the student’s hand, it hits to the north, i.e., forward of that position. Which of the following might be the cause for this to happen?

A container is filled with water and the pressure at the bottom of the container is P. Then the container is emptied halfway and topped off with oil of density 0.95 × 103 kg/m3, which floats on top of the water. What is the pressure at the bottom of the container now?

Suppose [Q]×105 J of energy are transferred to [m] kg of ice at 0 oC. The heat of fusion of water is Lf = 3.33 × 105 J/kg. The specific heat of water is c = 4186 J/(kg.K). Determine the final temperature of the liquid water in Celsius.

A small mailbag is released from a helicopter that is rising steadily at [v0] m/s. After [t] s, how far is it below the helicopter? Express your answer in meters.

A ball is thrown vertically upwards at 19.0 m/s. For its complete trip (up and back down to the starting position), its average velocity is:

After reading the articles and watching the videos in class, what do you think are the most important aspects of happiness?  Why?  Your answer should be at least 5 sentences. (Make sure you follow the paragraph structure we have discussed.)