Which of the following is the best coordinate system to analyze a painter climbing a ladder at an angle of 60° to the ground?
a.
x-axis: horizontal along the ground; y-axis: along the ladder
b.
x-axis: along the ladder; y-axis: horizontal along the ground
c.
x-axis: horizontal along the ground; y-axis: up and down
d.
x-axis: along the ladder; y-axis: up and down

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.