2. A worker uses an ideal machine to lift a 15 N weight a distance of 4.50 m. He uses a force of 7 N. How far does the effort force move? (2)

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

How are positive ions different from neutral atoms

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.