One mole of "o" gas is confined to volume V/2 by a thin membrane with one mole of "x" gas on the other side. Both gases are at the same temperature
3
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Which statement best describes what used to be called the solar neutrino problem?
A) Theoretical models predict that neutrinos should be produced in the Sun, but no neutrinos had ever been observed to be coming from the Sun. B) Solar neutrinos were detected in fewer numbers than predicted by theoretical models. C) Theoretical models did not predict the production of neutrinos by the Sun, yet solar neutrinos were detected. D) Theoretical models predicted that all solar neutrinos should be destroyed before they arrive at Earth, yet neutrinos were detected on Earth. E) The neutrinos that were being detected from the Sun had much smaller masses than theoretical models could account for.
A rock is suspended from a scale reads 20.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock?
A) 1.60 × 103 kg/m3 B) 2.50 × 103 kg/m3 C) 2.33 × 103 kg/m3 D) 3.00 × 103 kg/m3 E) 2.67 × 103 kg/m3
Because of their low surface gravities, the Moon and Mercury lack ________
Fill in the blank(s) with correct word
The circuit below contains 5 identical light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
a.
A: The one closest to the positive terminal of the battery.
b.
A and C: The bulbs closest to the positive terminal of the battery.
c.
A and B: Because they are closest to the terminals of the battery.
d.
C and D: Because they receive current from A and B and from E.
e.
E: Because the potential difference across E is that of the battery.