What causes resistance in an electrical current

What factor does not contribute to "water stress" on the Earth?

Pete slides a crate up a ramp with constant speed at an angle of 23.2 ◦ by exerting a 137 N force parallel to the ramp. How much work has been done against gravity when the crate is raised a vertical distance of 2.

A positively charged particle is in the center of a parallel plate capacitor that has charge + / - Q on it's plates. Suppose the distance between the plates is doubled, with the charged particle remaining in the center.

what is the mass of an object that is moving at an acceleration of 25 m/s squared with a force of 20 N

What do vertical and horizontal surface waves have in common? - Both waves travel along Earth's surface and decrease in amplitude with depth below the surface. - Both waves travel within Earth and increase in amplitude with depth below the surface.

Tarzan runs at 6 m/s and grabs a vertical vine (negligible mass) 4.1 m long which is tied to a tree at the top. Tarzan swings up. Determine the maximum height Tarzan will swing up and the angle the vine makes respect to vertical.

What is the safest place to be amid the coronavirus?

What is the change in internal energy if 60 J of heat are added to a system and the system does 40 J of work on its surroundings? Use AU = Q-W.

A 35-N bucket of water is lifted vertically 3.0 m and then returned to its original position. How much work did gravity do on the bucket during this process?

You then decide to throw another disc to your friend in the tree for fun. If you throw the disc at a speed of 10 m/s and your friend catches it 5.0 m above you, what was the speed of the disc just before your friend catches it