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| 1 |
The engine on a car turns at 600 revolutions per minute. What is the frequency of the engine in Hertz? |
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1/600 Hz |
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1/10 HZ |
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10 Hz |
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600 Hz |
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| 2 |
The "A" string on a guitar vibrates at 446 Hz. How much time does it take for the string to vibrate back and forth once? |
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0.00224 s |
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0.135 s |
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7.43 s |
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446 s |
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| 3 |
What is the period of motion of the boy in figure 1? |
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0.500 s |
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2.00 s |
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5.00 s |
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10.0 s |
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| 4 |
In, "Figure 1," how does the girls period of motion compare to the boys? |
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Her period of motion is 4 times the boy's. |
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Her period of motion is 1/4 the boy's. |
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Her period of motion is 495/33.5 times the boy's. |
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Her period of motion is 33.5/495 times the boy's. |
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Her period of motion is the same as the boy's. |
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| 5 |
In, "Figure 1," what is the magnitude of the boy's tangential velocity? |
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4(pi)/5 m/s |
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(pi)/5 m/s |
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4(pi)2/5 m/s |
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(pi)2/5 m/s |
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| 6 |
In, "Figure 1," what is the girl's centripetal acceleration? |
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2(pi)2/5 |
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8(pi)2/5 |
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2(pi)2/25 |
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8(pi)2/25 |
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None of the above |
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| 7 |
In, "Figure 1," what is the girl's centripetal force? |
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| 8 |
 While riding a ferris wheel, something goes critically wrong. The ferris wheel rotates around once in 10.0 seconds. How many g's do the riders at the bottom of the ferris wheel feel?
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0.403 g's felt by the rider |
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0.806 g's felt by the rider |
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1.40 g's felt by the rider |
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1.81 g's felt by the rider |
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5.03 g's felt by the rider |
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| 9 |
 In a sporting event called the "Hammer Throw," an athlete spins a heavy ball around on a cable. What is the athlete pulling against?
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The ball's centripetal force. |
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The ball's centrifical force. |
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The ball's inertia. |
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| 10 |
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Car A |
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Car B |
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Car C |
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Cars A, B and C |
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Cars B and C |
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| 11 |
For a particular circular motion situation the velocity is doubled and the period is tripled. All other variables remain the same. What factor does the centripetal acceleration change by? |
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Tnew=(2/3)Told |
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Tnew=(4/3)Told |
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Tnew=(4(pi)/3)Told |
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Tnew=(3/2)Told |
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| 12 |
For a particular circular motion situation the radius is doubled and the centripetal force changes by a factor of 8. All other variables remain the same. What factor does the tangential velocity change by? |
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2 |
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Squareroot of 8 |
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4 |
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16 |
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| 13 |
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"A" vector |
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"B" vector |
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"C" vector |
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"D" vector |
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None of these anawer the question |
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