Physics, 25.03.2020 00:00 joshuahagerman1404
10. A car approaching a stationary observer emits 570 Hz from its horn. If the observer detects a frequency
of 590 Hz, how fast is the car moving? The speed of sound is 343 m/s.
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What do you think car designers do if the damage caused by a crash test is too severe?
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There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
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Physics, 22.06.2019 13:20
Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron
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10. A car approaching a stationary observer emits 570 Hz from its horn. If the observer detects a fr...
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