If a galaxy is located at a distance of 18 Mpc and is found to have recessional velocity of 1170 km/s, what is Hubble's constant based only on this galaxy?
a. 65 km/s
b. 75 km/s
c. 55 km/s
d. 85 km/s
e. 95 km/s
a
Physics & Space Science
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Which of the following statements is true of stars?
A) They are highly unbalanced. B) They are held together by their own gravity. C) They do not have their own source of energy. D) They defy the law of conservation of mass.
Physics & Space Science
What is the focal length of the corrective contact lens needed by a nearsighted person whose far point is at 60 cm?
A) -60 cm B) +30 cm C) -30 cm D) +60 cm E) +130 cm
Physics & Space Science
What space shuttle put the hubble into orbit?
What will be an ideal response?
Physics & Space Science
Which of the following is a positively charged polyatomic ion?
a. Potassium ion b. Sulfide ion c. Ammonium ion d. Sulfate ion
Physics & Space Science