How does the idea of inflation account for the existence of the "seeds" of density from which galaxies and other large structures formed?
A) Inflation predicts that gravity would have been very strong and thereby would have concentrated mass into seeds.
B) Inflation would have caused random, microscopic quantum fluctuations to grow so large in size that they became the seeds of structure.
C) Inflation predicts that temperatures and densities should have become nearly equal throughout the universe.
D) Inflation tells us that the universe should have a "flat" overall geometry, and this led to the flat disks of galaxies.
B
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Two spheres are made of conducting material. Sphere #2 has twice the radius of Sphere #1 . What is the ratio of the capacitance of Sphere #2 to the capacitance of Sphere #1? a. 1, since all conducting spheres have the same capacitance
b. 2 c. 4 d. 8 e. A single sphere has no capacitance since a second concentric spherical shell is necessary to make a spherical capacitor. Thus, none of the answers above is correct.
Which laboratory observation would most support the kinetic theory's assumption that molecules in a gas are widely separated?
a. A gas exerts the same pressure on each part of a container's wall. b. A gas is highly compressible. c. A gas with a lower formula mass diffuses more rapidly than one with a higher formula mass. d. A gas expands when the pressure on it is released.
When a mineral's surface reflects light in a manner similar to a smooth metal, the mineral is said to have a(n) ______________ luster
Fill in the blank(s) with correct word
The Compton effect demonstrates
A) relativistic formulation works well. B) consistent explanations of scattered photon shift in wavelength. C) light acts as photons. D) all of the above. E) none of the above.