Akilowatt-hour (kw-h) must be a unit of
a. mass
b. force
c. power
d. energy

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

What are the necessary conditions for fusion?