Ok so i've had some trouble understanding independent variable, dependent variable, constants, and controls. i'm doing something about mass and weigh (in newton's) and you can choose different planets to see how the planets gravity affects it's mass/weight. the objects are on the little white bar on the bottom. ! i need to know what each variable is and the constant/control.

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

Carbon 14 is a naturally occurring stable