Which of these statements are true about hydroelectric power? Check all that are true. It is the most widely used renewable energy source in the world. It never disrupts ecosystems. It is not always available. A hydroelectric dam controls the force of moving water to generate electricity.

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

Which describes increasing the efficiency of energy resource

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.