A recurrent nova could eventually build up to a
A) Type I supernova.
B) helium flash.
C) Type II supernova.
D) planetary nebula.
E) core composed of iron.
A
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Invented the modern spectroscope
A. Prism or A Diffraction Grating |
B. Annie Jump Cannon |
C. Temperature |
D. Spectroheliometer |
E. Continuous Spectrum |
F. Joseph Van Fraunhofer |
Two converging lenses, the first with focal length 40 cm and the second with focal length 331/3 cm, are separated by 10.0 cm. An object of height 6.0 cm is placed 20.0 cm in front of the first lens. What are the size and orientation of the final image?
A. 6.0 cm, upright B. 6.0 cm, inverted C. 24 cm, upright D. 24 cm, inverted E. 1.5 cm, inverted
A light ray in air strikes a glass surface with an angle of incidence of 
The angle of refraction in the glass is 
What is the speed of light in the glass?
A. 
B. 
C. 
D. 
E. 
The primary way that we observe the atomic hydrogen that makes up most of the interstellar gas in the Milky Way is with
A) radio telescopes observing at a wavelength of 21 centimeters. B) ground-based visible-light telescopes. C) space-based ultraviolet telescopes. D) x-ray telescopes.