The Doppler effect in the spectra of quasars show very high _______________
Fill in the blank(s) with correct word
red shifts
redshifts
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If a piece of wood is suspected to be several thousand years old, its true age can likely be determined through use of the isotope _________
Fill in the blank(s) with correct word
The solar energy coming to the earth by radiation is 1,340 W/m2 when the temperature of the Sun is 5800 K. If the temperature of the Sun decreased by 10.0%, then what would be the amount of solar radiation coming to the earth?
A. 879 W/m2 B. 752 W/m2 C. 667 W/m2 D. 610 W/m2 E. 578 W/m2
The two most important properties of any telescope are
A. the magnification and the light-gathering power. B. the light-gathering power and the length of the tube. C. the length of the tube and the magnification. D. the light-gathering power and the resolving power. E. the resolving power and the magnification.
Why does the Moon lack an atmosphere?
What will be an ideal response?