Physics, 19.04.2021 21:50 natalie2sheffield
The following table lists the speed of sound in various materials. Use this table to answer the question.
The siren from a small town fire station is heard at a location 3 kilometers away. If the air temperature is 20°C, at what
velocity did the sound travel?
a.319 m/s
b. 331 m/s
c. 343 m/s
d. 387 m/s
Answers: 3
Physics, 21.06.2019 22:50
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Answers: 2
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An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.
Answers: 1
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Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.
Answers: 3
The following table lists the speed of sound in various materials. Use this table to answer the ques...
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