Question 4 (1 point) A bike is sitting at the top of a hill that is 21 meters high. The bike has a mass of 0.200 kilograms. The bike has potential energy. Calculate it.
• A bike is sitting at the top of a hill that is 21 m high. The bike has a mass of 0.200 kilograms. The bike has
energy. Calculate it.

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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.