Mrs. Letman’s class wanted to figure out which brand of paper towel would absorb the most water. They performed an experiment on 4 different types of paper towels. The students measured out 5X5 inch paper towels, to make sure each paper towel was the same size. Once the paper towels were measured, they put 20 seconds on the clock, and placed a paper towel in a beaker of water and observed. After the 20 seconds was up the class squeezed as much water out of the paper towels as possible into a graduated cylinder, then recorded their data. They did this for each paper towel. What is the dependent variable in the Paper Towel Experiment?

With these questions , 15 pts & brainliest

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!