You observe a rocket moving toward you. Compared to the passage of time measured by the watch on your wrist, the passage of time on the rocket's clock is
1.faster.
2.slower.
3.the same.
2
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Perfect absorbers of electromagnetic radiation are also perfect emitters
Indicate whether the statement is true or false
The ________ a period ________, that coincides with ________.
A. magnetic cycle is; of 22 years; a period of intense solar and earthquakes B. sunspot cycle is; of 11 years; the Sun's rotation around its axis C. Maunder Minimum is; of low sunspot activity; the "little ice age" in the late 17th century D. solar cycle is; of high sunspot activity; the cycle of the planetary alignments
Beyond the scale of superclusters, galaxies are randomly distributed throughout the universe
Indicate whether the statement is true or false
If the back of a person's eye is too close to the lens, this person is suffering from
A) nearsightedness. B) spherical aberration. C) astigmatism. D) chromatic aberration. E) farsightedness.