Which of these is not a form of Potential Energy?
Kinetic
Elastic
Gravitational

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

What if it is did darwin used to support his theory of evolution