Which type of reflector telescope would be the easiest to construct, and why?
What will be an ideal response?
The prime focus reflector needs only a single optical surface, on the front of the main mirror.
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_______________ objects are asteroids with orbits that carry them into the inner Solar System
Fill in the blank(s) with correct word
Quasars are____
a. spiral galaxies with unusually luminous nuclei b. elliptical galaxies with very broad emission lines c. explained by the double-exhaust model d. extremely luminous objects with high redshifts e. glowing green gases due to excitation from energy from an active core
An RBE
A) is an effective dose of 1 Gy. B) is equivalent to 3.70 × 1010 decays/s in radium. C) is 10-2 J/kg. D) when multiplied into dosage, yields the effective dose. E) is an SI unit of absorbed dose = 1 J/kg = 100 rad.
A Muon is
A. a Baryon. B. a Lepton. C. a Hadron. D. a Proton.