The students on the right are applying a force of 100 N to the right. This is shown by the red arrow. The students on the left a
re applying a force of 100 N to the left. This is shown by the blue arrow. A student on the blue team loses balance and lets go of the rope. What is the most likely effect of this change?
A. The rope will move to the right, in the direction of the net force.
B. The rope will move to the left, in the direction opposite to the net force.
C. The rope will move to the left, in the direction of the net force.
D. The rope will move to the right, in the direction opposite to the net force.
A. The rope will move to the right, in the direction of the net force.
B. The rope will move to the left, in the direction opposite to the net force.
C. The rope will move to the left, in the direction of the net force.
D. The rope will move to the right, in the direction opposite to the net force.
2 answers:
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The question is incomplete. The complete question is :
Two loudspeakers are placed 1.8 m apart. They play tones of equal frequency. If you stand 3.0 m in front of the speakers, and exactly between them, you hear a minimum of intensity. As you walk parallel to the plane of the speakers, staying 3.0 m away, the sound intensity increases until reaching a maximum when you are directly in front of one of the speakers. The speed of sound in the room is 340 m/s.
What is the frequency of the sound?
Solution :
Given :
The distance between the two loud speakers,
The speaker are in phase and so the path difference is zero constructive interference occurs.
At the point , the speakers are out of phase and so the path difference is
Therefore,
Thus the frequency is :
Hz
