Kepler's Laws: Halley's Comet is in a highly elliptical orbit around the sun. Therefore the orbital speed of Halley's Comet, while traveling around the sun,
A. is constant.
B. increases as it nears the Sun.
C. decreases as it nears the Sun.
D. is zero at two points in the orbit.
Answer: B
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Graphical Addition: Two vectors, of magnitudes 20 mm and 50 mm, are added together. Which one of the following is a possible value for the magnitude of the resultant?
A. 10 mm B. 20 mm C. 40 mm D. 80 mm
For hydrogen, the transition from the second to the fourth energy level produces:
A) a red emission line. B) a blue green absorption line. C) a violet emission line. D) an infrared emission line. E) an ultraviolet absorption line.
A neutron star is ________
A) the remains of a star that died in a massive star supernova (if no black hole were created) B) a star made mostly of elements with high atomic mass numbers, so that they have lots of neutrons C) the remains of a star that died by expelling its outer layers in a planetary nebula D) an object that will ultimately become a black hole
An optical telescope is able to resolve blue objects better than red objects.
Answer the following statement true (T) or false (F)