Which of the following describes a nonmetal?
A) poor conductor of electricity
B) shiny
C) malleable
D) ductile
E) good conductor of heat
Ans: A) poor conductor of electricity
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Which of the following Pluto observations did not help convince scientists to change Pluto's status from that of a planet?
A) discovery of the Kuiper Belt B) discovery of seasonal atmosphere, similar to comets C) discovery of large Kuiper Belt Objects D) discovery of Pluto's 5 moons
How fast (in terms of the speed of light) should a moving clock travel if it is to be observed by a stationary observer as running at one-half its normal rate?
What will be an ideal response?
Explain how shepherd moons constrain the motions of small particles into a narrow ring about a planet
What will be an ideal response?
When light goes from one material into another material having a HIGHER index of refraction
A) its speed, wavelength, and frequency all decrease. B) its speed and wavelength decrease, but its frequency stays the same. C) its speed decreases but its wavelength and frequency both increase. D) its speed decreases but its frequency and wavelength stay the same. E) its speed increases, its wavelength decreases, and its frequency stays the same.