PLSS HELP If the resistance is equal to the slope, what does this tell us about the meaning of a voltage vs current graph?

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Explain why electric current cannot exist if a current doesn't have a voltage source.

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg