A swimmer has a metabolic rate of 600 W. How many breaths per minute should the swimmer take if her lungs take in 0.50 L of air in each breath, and the percentage of oxygen in the air is 21%?
a. 25.2
b. 120
c. 33.5
d. 17.1
d
Physics & Space Science
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Olbers's paradox makes an incorrect prediction that it gets dark at night because the Universe is:
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What is the effect of adding some boron on how easily a silicon crystal conducts electricity?
A. The crystal becomes more conductive. B. The crystal becomes less conductive. C. The boron creates new energy levels for electrons but does not change the crystal’s conductivity.
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A 25-newton weight falls freely from the rest from the roof of a building, what is the total distance the weight falls in the first 1.0 second?
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Globular clusters are found in the Milky Way's
Indicate whether the statement is true or false.
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