A 25-kg cactus is dropped from 7 meters. How much gravitational potential energy does that cactus have before it is dropped? (Reminder: g = 9.80 m/s/s)

Which governments provide garbage collection services to homes and businesses

The heliocentric and the geocentric models of the solar system included these central principles

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.