What is true about solar system densities?
A) The denser planets lie closer to the Sun.
B) In differentiated bodies, the denser materials lie near their surfaces.
C) The asteroids all have about the same density.
D) Saturn has the same density as water.
E) Planetary density increases with increasing distance from the Sun.
A
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Which of the following is not a unit of pressure?
a. atmosphere b. psi c. N/m2 d. mm of mercury e. pascal f. none of the above Indicate whether the statement is true or false
An incredibly dense star so massive that light cannot escape from its surface is called a _______________
a. red giant b. black hole c. white dwarf d. pulsar
As a result of experiments involving alpha particle scattering, __________ proposed the nuclear model of the atom.
A. Einstein B. Bohr C. Rutherford D. Planck E. Feynman
A 3.0-cm tall statue is 48 cm in front of a convex lens having a focal length of magnitude 20 cm
(a) Is the image of the statue real or virtual? (b) How far is the image from the lens? (c) Is the image upright or inverted? (d) How tall is the image?