Physics, 21.09.2019 05:30 postolachiveaceslav9
Awoman is sitting at a bus stop when an ambulance with a siren wailing at 317 hz approaches at 69 miles per hour (mph). assume the speed of sound to be 343 m/s. a) how fast is the ambulance moving in meters per second? (perform the necessary unit conversion) vs= 69 mph = m/s b) what frequency does the woman hear? fa = hz c) what speed (vs) would the ambulance be traveling in order for the woman to hear the siren at an approaching frequency of 350 hz? vs= m/s d) what frequency would she hear as the siren moves away from her at the same speed (as in part c)? fa = hz
Answers: 1
Physics, 21.06.2019 22:00
Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch
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Physics, 21.06.2019 22:30
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 3
Physics, 22.06.2019 13:00
Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg
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Physics, 22.06.2019 13:50
9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.
Answers: 1
Awoman is sitting at a bus stop when an ambulance with a siren wailing at 317 hz approaches at 69 mi...
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