What is the equation for the mechanical advantage of a lever? O MA = length of effort arm + length of resistance arm

O MA = length of effort arm length of resistance arm

O MA = length of effort arm / length of resistance arm

O MA = length of resistance arm length of effort arm​

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.