Which of the following is not a general difference between a planet and a star?
A) Planets are smaller than stars.
B) Planets are dimmer than stars.
C) All planets are made of rock and all stars are made of gas.
D) Planets orbit stars, while stars orbit the center of the galaxy.
C
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A thin lens of focal length -12.5 cm has a 5.0 cm tall object placed 10 cm in front of it. Where is the image located?
A. 2.5 cm behind the lens B. 5.6 cm behind the lens C. 5.6 cm in front of the lens D. 50 cm behind the lens E. 50 cm in front of the lens
The lithospheric plates are believed to be put into motion by the driving force of ______________ cells in the asthenosphere
Fill in the blank(s) with correct word
Polymers, such as epoxy, with cross-links are _____________polymers that do not soften when heated.
Fill in the blank(s) with the appropriate word(s).
When light of wavelength 450 nm falls on a single slit of width 0.30 mm, what is the angular width of the central bright region?
A) 0.086° B) 0.13° C) 0.17° D) 0.26° E) 0.35°