Doppler Effect - 无忧得胜-网上国际课程 (5edu.win)

1#

98.18: When a train is at rest, both a passenger on the train and a ti.;8gey 1dlw)mw qzo eaehf79*u; vvw9cket seller on the station agreevofwv ) y1;lu;m9heze*qedg9w a8.w7 that the trains whistle produces sound at a frequency of 120 Hz. When the train is moving away from the station at 15 m/s, the passenger hears a frequency of _____ Hz and the ticket seller hears a frequency of ____ Hz.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.18: A car is moving to the l*j 8wr*cjz:pd/icz2teft at 20 m/s while a truck is moving to the right at 25 m/s. If the truck emits a sound of frequency 5000 Hz, what is the perceived frequency of the sound by the driver of the car? Ad z2rc8pcz *:/*t jijwssume the vehicles are moving directly away from each other on a $20.0^{\circ}C$ day

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

17.39: A point wave source travels along the x-axis at constant spee yb,*mc( 2;b lyuxrp+qd $v_s$. Stationary observers on the x-axis measure the wavelength of the waves that they receive. The ratio of the wavelength measured at a location behind the source to the wavelength measured at a location in front of the source is 1.50. If the wave speed is v, what is the source speed $v_s$?

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

02.47: A car heads toward a brick wall in a crash te m0b29ggcox 6ost at 30 m/s. The horn is emitting a sound with frequency 250 Hz asoxcmg9 g 0b62o it approaches the wall. If the air is still and the speed of sound in air is 340 m/s, what beat frequency from the horn would the driver of the car detect?

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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信xxxxxxxxxx，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力

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