An Observer Stands 3 M from Speaker a and 4 $\frac { \pi } { 2 }$

question 17

Multiple Choice

An observer stands 3 m from speaker A and 4 m from speaker B.Both speakers,oscillating in phase,produce 170 Hz waves.The speed of sound in air is 340 m/s.What is the phase difference (in radians) between the waves from A and B at the observer's location,point P?

• A)0
• B) \(\frac { \pi } { 2 }\)
• C) \(\pi\)
• D)2 \(\pi\)
• E)4 \(\pi\)

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Definitions:

Anterior Portion

The front part of a structure or organ in the body.

Hip Bone

A large, irregular bone forming the upper part of each half of the pelvis, comprising the ilium, ischium, and pubis.

Acetabulum

The cup-shaped socket in the pelvis that receives the head of the femur, forming the hip joint.

Tarsals

The seven bones constituting the ankle and heel forming part of the foot.