In which of the following situations does light exhibit particle properties? A. Different materials reflect different colors of light.
B. Different materials absorb different colors of light.
C. Light appears to bend around obstacles in its path.
D. Light travels in straight lines through uniform materials.

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.