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a physics professor demonstrates the doppler effect by tying a 600hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 100rpm. what are the highest and lowest frequencies heard by a student in the classs room? assume the room temperature is 20°C
A uniform magnetic field passes through a horizontal circular wire loop at an angle 16.2° from the normal to plane of the loop. compute the magnetic flux through the loop
A small ball of mass 50 g is suspended from a string of length 66-cm and whirled in a circle lying in the horizontal plane. If the string makes an angle of 21? with the vertical, find the centripetal force experienced by ball. The acceleration of ..
A computer CD-ROM drive that operates on 120 V is rated at 50W when it is operating. What is the drive's resistance
If you were on a spaceship traveling a 0.5c away from a star, at what speed would the starlight pass you
The pressure exerted by a phonograph needle on a record is surprisingly large. what pressure is exerted on the record in N/m2
How long does it take mass to make one complete revolution.
Determine the maximum horizontal force that can be applied to the block before it slips.
a 1.5 kg box moves back and forth on a horizontal frictionless surface between two different springs. by how much will the box compress the weaker spring
A 12kg runaway grocery cart runs into a spring with spring constant 210 N/m and compresses it by 70 cm .What was the speed of the cart just before it hit the spring.
A bicyclist of mass 75 kg ( including the bicycle) can coast down a 4.0 degree hill at a constant speed of 10 km/h. Pumping hard,the cyclist can descend the hill at a speed of 30 km/h.
A cop car drives at 30m/s toward the scene of a crime, with its siren sounding (f = 2125 Hz.) Estimate the frequency heard by people at the crime scene as the siren approaches and the frequency heard as the siren moves away from people.
Paul is what most people consider a "jock." He is the captain of both the football and wrestling team and he also plays hockey. Upon entering Mrs. Title's class she figured that he would not take course seriously nor would he excel in class. She p..
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