In the afternoon, the decibel level of a busy freeway is 89 dB with 90 cars passing a given point every minute. Late at night, the traffic flow is only 5 cars per minute. What is the late-night decibel level?
a. 205 dB
b. 9 dB
c. 176 dB
d. 89 dB
e. 76 dB
Ans: e. 76 dB
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At Titan, the weather is driven by phase changes of ________ gas into liquid or solid forms
Fill in the blank(s) with correct word
A 1.0-m wire segment carrying a current of 0.55 A oriented parallel to a uniform magnetic field of 0.80 T experiences a force of what magnitude?
a. 0.44 N b. 0.22 N c. 0.70 N d. 0.35 N e. 0.00 N
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a. That heat was only generated by fire, light, and sunshine. b. That caloric, or heat fluid, is a gas. c. That heat is a substance found in fire that is available only in limited amounts in every object. d. That heat can be generated in any amount wanted and was therefore not a material substance. e. That heat is a form of energy.