A 40°C ball made of pure silver starts rolling, it is rolling at 5 m/s, it rolls a distance of 10 m, when it stops rolling at the edge of a 25 m high cliff it is 18°C. The power used to roll the ball was 100
watts. What is the balls momentum? How much work was applied to the ball? What would this
ball weigh on the Moon? How much kinetic energy does the ball have at that speed? How much
potential energy does the ball have? What is the change in thermal energy of the ball?
List all of the given values from the problem (there are 10)

How does the space charge width change with forward and reverse bias? also, calculate the space charge width for a reverse bias of 4v on a silicon pn junction at t = 300k and doping concentrations of na = 5x1015cm-3 , nd = 5x 1016 cm-3 .

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?