The most common molecule in a molecular cloud is:
A) methane, CH4.
B) molecular hydrogen, H2.
C) carbon monoxide, CO.
D) water, H2O.
E) ammonia, NH3.
B
Physics & Space Science
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a. True b. False Indicate whether the statement is true or false
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Henrietta Leavitt's period-luminosity relation for ________ indicates that longer periods mean more luminosity
Fill in the blank(s) with correct word
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If you wish to keep chicken warm in a shed on a cold night, the best lamp to use is
A) an incandescent lamp. B) a fluorescent lamp. C) an LED lamp. D) a CFL lamp.
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If you drop a pencil while riding on a smooth riding bus, why does the pencil land at the same place it would if the bus were at rest?
What will be an ideal response?
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