Two loudspeakers are placed on a wall 3.00 m apart. a listener stands 3.00 m from the wall directly in front of one of the speakers. a single oscillator is driving the speakers at a frequency of 300 hz. (a) what is the phase difference between the two waves when they reach the observer? (your answer should be between 0 and 2.) rad (b) what if? what is the frequency closest to 300 hz to which the oscillator may be adjusted such that the observer hears minimal sound?

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Mark creates a graphic organizer to review his notes aboutelectrical force.which labels belong in the regions marked x and y?

"if the pressure acting on an ideal gas at constant temperature is tripled, its volume isa) reduced to one-third.b) increased by a factor of three.c) increased by a factor of two.d) reduced to one-half"