A goldfish bowl is spherical, 8.0 cm in radius. A goldfish is swimming 3.0 cm from the wall of the bowl. Where does the fish appear to be to an observer outside? The index of refraction of water is 1.33
Neglect the effect of the glass wall of the bowl. A) 3.3 cm inside the bowl
B) 3.9 cm inside the bowl
C) 2.5 cm inside the bowl
D) 3.0 cm inside the bowl
E) 1.7 cm inside the bowl
C
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Based on the observed amount of deuterium in the universe, we can conclude that
A) ordinary (baryonic) matter makes 75 percent of the mass of the universe. B) neutrons outnumber protons 7 to 1 in the universe. C) most of the deuterium that was created in the early universe has since been destroyed. D) the density of ordinary (baryonic) matter is about 5 percent of the critical density. E) the density of the universe equals the critical density.
Going from medium mass nuclei to heavy nuclei, the average binding energy per nucleon
A) does not change. B) decreases. C) behaves randomly with no clear pattern. D) doubles. E) increases.
A theory cannot be absolutely verified
Indicate whether the statement is true or false
The energy of a photon:
A) is inversely proportional to the frequency of the light. B) is inversely proportional to the wavelength of the light. C) depends only on the speed of the light. D) depends only on the mass of the photon.