Help mee, thank you. Science. Due tonight and I am very tired now :/


If a system releases some kinetic energy, what happens to the potential energy?


It is released the same amount.

It is lost as thermal heat energy.

It increases by the same amount.

It will be 100%.




Agricultural scientists are trying a new man-made vitamin on tomato plants to make them bigger and redder. They are putting the vitamin in the soil of a group of plants, and are also observing a group of plants that have received nothing other than regular water. This second group is the:


variable group.

experimental group.

placebo group.

control group.