The mass of two balls is 0.80 kg each and they are separated by a distance of 0.25 meters. Calculate the gravitational force between the two balls. *

What happens to light waves from a star as the star moves away from earth?

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

In a system, when potential energy decreases, then entropy also decreases. true false