The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines
Indicate whether the statement is true or false
FALSE
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Organisms that are found living kilometers beneath Earth's crust are referred to as
A) asthenophiles B) magmaphiles C) sublithophiles D) endoliths
7.0 kg is hung from a steel wire of diameter 0.75 mm and length 2.5 meters. (S = 8.2 × 1010 N/m2; Y = 20 × 1010 N/m2)
(a) By how much does the wire stretch? (b) If the wire diameter were doubled, what would be the stretch?
A(n) ____ is a small circle whose center is located on the circumference of another larger circle
a. equant b. deferent c. retrograde loop d. ellipse e. epicycle
Groombridge 34 is an M1 V star. Based on this information, which of the following are true? I. Groombridge 34 has a surface temperature that is less than the Sun. II. Groombridge 34 has a mass that is greater than that of the Sun. III. Groombridge 34 is less luminous than the Sun. IV. Groombridge 34 is located near the middle of the H-R diagram
a. I & II b. II & IV c. I & IV d. I & III e. II & III