What is the name of the variable that is set by the scientist in an experiment? A. The independent variable
B. The dependent variable
C. The graphing variable
D. The stable variable

I'm not smart so I have no clue​

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.