Answer:
55%
Explanation:
take efficiency=power output/power input multiply by 100%
Answer: The skier has potential and kinetic energy.
Explanation: This is what I found from a different user on this website
Answer:
electrons
Explanation:
The total charge Q is the sum of the charge of the N electrons contained in the sphere:

charge of a electron
We solve to find N:

Force = mass * acceleration = 1500kg * 8m/s²
Answer:
Im not sure
Explanation:
I don't take physics cuz im in 9th grade. so. idk but I will find out and come back with an answer.