An ambulance is rapidly approaching you at a stop light. what happens to the frequency and pitch of the sound as the ambulance draws closer? (2 points)
a) the frequency increases, and the pitch increases
b) the frequency increases, and the pitch decreases
c) the frequency decreases, and the pitch decreases
d) the frequency decreases, and the pitch increases
Answers: 1
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Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d
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Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)
Answers: 1
An ambulance is rapidly approaching you at a stop light. what happens to the frequency and pitch of...
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