Which type of modulation is used by remote-control toys? -amplitude
-frequency
-phase
-pulse

What does the law of conservation of mass state?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block

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.