Candy_Questions_13_Post

Candy_Questions_13_Post - . Give your answer to three...

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38 . Given : A linear potentiometer is constructed using a resistor with total resistance R = 20.0 k Ω and length L = 12.0 cm. The supply voltage is 5.00 V DC. To do : When V o = 3.50 V, calculate distance x in units of cm. Solution : 39 . Given : A through-transmission ultrasonic transducer is used to measure the speed of sound in a metal sample. The metal is 0.554 inches thick, as carefully measured with a micrometer. The time difference from when the pulse is transmitted to when the signal is received is 4.85 μ s. To do : Calculate the speed of sound in the metal in units of m/s. Give your answer to three significant digits. Solution : 40 . Given : A dynamometer is used to measure the shaft power output of a car engine. The torque arm is 0.546 m, the measured force is 668. N, and the measured shaft rotation speed is 3520 rpm. To do : Calculate the engine power in units of horsepower
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Unformatted text preview: . Give your answer to three significant digits. Solution : 41a . Given : Wayne uses a strobe to measure the rotation rate of a pulley. One dot is painted on the face of the pulley. The pulley is rotating at 2000 rpm, and the strobe is flashing at 500 rpm. To do : How many frozen dots does Wayne see? Solution : 41b . Given : Wayne uses a strobe to measure the rotation rate of a pulley. One dot is painted on the face of the pulley. The pulley is rotating at 500 rpm, and the strobe is flashing at 2000 rpm. To do : How many frozen dots does Wayne see? Solution : 41c . Given : Wayne uses a strobe to measure the rotation rate of a pulley. One dot is painted on the face of the pulley. The pulley is rotating at 1500 rpm, and the strobe is flashing at 2000 rpm. To do : How many frozen dots does Wayne see? Solution : V s L x Slider V o...
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