10) Which of the following statements about the run-of-the-river approach to hydropower is true?
A.
It blocks a river.
В.
It ensures a steady supply of water.
o o
o
0
It disturbs wildlife
O
D. It uses the natural flow of a river.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?