What is the range of values for Right Ascension?
A. 0 to 360 degrees
B. 0 to 23 hours
C. 90 degrees to 0 degrees
D. +23.5 to -23.5 degrees
E. 0 to 12 hours
Ans: B. 0 to 23 hours
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Which of the following is one important reason why most large astronomical telescopes are reflecting telescopes rather than refracting telescopes?
A) Reflecting telescopes have their heaviest component (the mirror) at the bottom rather than the top of the telescope's tube. B) Reflecting telescopes take up less space than refracting telescopes. C) Reflecting telescopes are taller than refracting telescopes. D) For a mirror and lens of the same diameter, a mirror will collect more light.
About where is our solar system located within the Milky Way Galaxy?
a) about half way from the center of the galaxy to the outskirts of the galactic disk b) in the halo of the galaxy about the galactic disk c) near the far outskirts of the galactic disk
A transformer only works with AC
a. True b. False Indicate whether the statement is true or false
A proton, mass 1.67 × 10^-27 kg and charge +1.6 × 10^-19 C, moves in a circular orbit perpendicular to a uniform magnetic field of 0.50 T. Find the time for the proton to make one complete circular orbit
a. 8.7 × 10^-8 s c. 9.8 × 10^-7 s b. 1.3 × 10^-7 s d. 4.3 × 10^-8 s