WILL GIVE BRAINLIEST AND 30 POINTS!
Which materials are present in an NPN transistor?

A. all negative type semiconductor materials on a positive plate
B. all positive type semiconductor materials on a negative plate
C. an n-type semiconductor sandwiched between p-type semiconductor materials
D. a p-type semiconductor sandwiched between n-type semiconductor materials

Which composition of water moves to begin a deepwater current?

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.

Why do metals "give up" their valence electrons?