Physics, 28.07.2019 19:00 jameanch7182
Two fire trucks with sirens speeds towards and away from an observer. which statement is true involving the doppler effect observed by the observer? a) the doppler effect is not observed by the observer b) due to the doppler effect, the fire truck traveling towards the observer is not heard c) the fire truck traveling away from the observer produces a lower than normal apparent siren frequency d) the fire truck traveling towards the observer produces a lower than normal apparent siren frequency
Answers: 1
Physics, 21.06.2019 23:30
Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.
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Physics, 22.06.2019 17:00
Amajor difference radio waves, visible light, and gamma rays is the of the photons, which results in different photon frequencies and wavelengths
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Physics, 23.06.2019 00:50
Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?
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Two fire trucks with sirens speeds towards and away from an observer. which statement is true involv...
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