4. Calculate the wavelength of the sound waves that has a speed of 15m/s and frequency of: a.) 39 Hz b.) 9.35 KHz
4. Calculate the wavelength of the sound waves that has a speed of 15m/s and frequency of: a.) 39 Hz b.) 9.35 KHz
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Transcribed Image Text:4. Calculate the wavelength of the sound waves that has a speed of 15m/s and frequency
of:
a.) 39 Hz
b.) 9.35 KHz
Hequek
5. Find the frequency of X-rays which has aA of 55-m that produced by a patient who has a
bone fracture.
6. Think about a 98-N supported by a rope. A 98-N is attached to the tension in the rope.
What forces are exerted by the other two ropes if the rope is now tied together with two
other ropes as shown in the figure below?
45
.30
T (98 N)
7. The wheels of the car has a moment of inertia of 56-kg.m rotates at 5 rad/s. What is the
angular momentum of the wheels of the car?
Transcribed Image Text:3. A force of 9-N is applied at the end of a lever that has a length of 5 meters. If the force is
applied directly perpendicular to the lever, as shown in the diagram below, what is the
magnitude of the torque acting the lever?
Force of 9 N
5 m
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