Protoplanets
a. grew in size primarily by accretion.
b. grew in size primarily by condensation.
c. are still visible today as the terrestrial planets.
d. grew in size by collecting the particles in the solar wind.
e. grew in size by the collision and coalescing of planetesimals.
e
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Which of the following is not considered a fundamental particle?
A) a proton B) an electron C) an up quark D) a neutrino
Light from the sun passes through a converging lens and forms an image at
A. infinity. B. the center of curvature of the lens. C. the center of the lens. D. the focal point.
Pulsars cannot be spinning white dwarfs because
a. white dwarfs are not that common. b. white dwarfs are not dense enough. c. white dwarfs do not have magnetic fields. d. a white dwarf spinning that fast would fly apart. e. all of the above
The first law of thermodynamics is basically a special version of the law of ______________
Fill in the blank(s) with correct word