Two speakers face each other, and they each emit a sound of wavelength (lambda). one speaker is 180 (degrees)
%u2218out of phase with respect to the other. if we separate the speakers by a distance1.5 (lambda)
,how far from the left-most speaker should we place a microphone in order to pick up the loudest sound? ignore reflections from nearby surfaces. select all that apply.

a. 3/4 lambda
b. 0 lambda
c. 1/2 lambda
d. 1/4 lambda
e. 1 lambda

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward