Calculate Anna's weight in newtons on Earth. (G=9.8 m/s2) Must include unit with your answer, what is it?​

Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. she placed them on a window sill in the sun for an hour and then measured the warmth of the air in each box. in this experiment, the warmth of the air is a(n) a. independent variable b dependent variable c constant d control