A meteoroid, meteor, and meteorite could come from the same celestial body
a. True
b. False
Indicate whether the statement is true or false
True
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Tuning forks #1, #2, and #3 each have slightly different frequencies.When #1 and #2 are sounded together, a beat frequency of 3 Hz results. When #2 and #3 are sounded together, a beat frequency of 5 Hz results. If the frequency of #1 is 100 Hz, which of the following cannot be the frequency of #3?
a. 92 Hz b. 95 Hz c. 98 Hz d. 102 Hz e. 108 Hz
When the number of turns in a solenoid and its length are both doubled, the ratio of the magnitude of the new magnetic field inside to the magnitude of the original magnetic field inside is:
a. 0.25 b. 0.50 c. 1 d. 2 e. 4
In the atmosphere, the intensity of scattered sunlight of longer wavelength is greater than that of shorter wavelength
Indicate whether the statement is true or false
What is the hardness of quartz on the Mohs scale?
a. 1 b. 4 c. 7 d. 10