Apiece of solid copper, at 10oc, is dropped into a graduated cylinder of 100°c water. which statement best describes the change in heat energy in this system?
a) both water and copper temperatures decrease.
b) the temperatures of both substances remain constant.
c) water temperature increases; copper temperature decreases.
d) water temperature decreases; copper temperature increases.

D

Explanation:

Water temperature decreases; copper temperature increases. Heat energy moves from high to low. Heat energy will be transferred from the water to the copper.

most of them using statistics and defining how things are being measured

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."