The law of conservation of energy applies:

a. in all systems.

b. in isolated systems

c. only in open mechanical systems.

d. whenever pe = 0.

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.