Help- 35 points for a full good answer :) do you think communities should keep investing in hydroelectric dams and wind turbines? do the benefits of these power sources outweigh there problems? explain your answer.

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.