Calculate the force X that you would need to balance this seesaw.

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?