Hydropower plant A has a flow of 200 kg/s and head height of 100 meters. Hydropower plant B has a flow of 100 kg/s and a head height of 200 meters. If they both have the same efficiency, which plant has the potential to produce more power

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j