Which of the following statements is true?
A. A submerged submarine will displace its own weight of water
B. A floating ocean liner will displace its own volume of water
C. A floating ocean liner will displace its own weight of water
D. None of these statements are true
Answer: C
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Which planet listed has the most extreme seasons?
A) Uranus B) Mars C) Earth D) Jupiter
It sure is bright everywhere; you've been able to travel around a bit, and it's clear that you are not in a star. Yet it is as bright as looking directly at the Sun
In your extensive travels through your current surroundings, you cannot find a single neutral atom anywhere, nor can you find a nucleus besides hydrogen or helium. And, while it is hot (a few thousand degrees Kelvin), it is nowhere near the temperature needed for nuclear fusion. Where are you? A) You are in the universe during its first 300,000 years. B) You are in the universe more than 10100 years in the future. C) You are in an accretion disk around a supermassive black hole. D) You are in the central regions of a quasar. E) You are where the Sun should be located, but about 5 billion years from now.
The charge per unit length on an insulator is . On a 2.0-m length of this material, what is the difference in the number of electrons and the number of protons?
a. There are more electrons than protons. b. There are more protons than electrons. c. There are more protons than electrons. d. There are more electrons than protons.
Alkaloid salts are not very soluble in the organic solvent diethyl ether. What might happen to the free-base form of caffeine dissolved in diethyl ether if gaseous hydrogen chloride, HCl, were bubbled into the solution?
A) A second layer of water would form. B) Nothing, and the HCl gas would merely bubble out of solution. C) The diethyl ether insoluble caffeine salt would form as a white precipitate. D) The acid/base reaction would release heat, which would cause the diethyl ether to start evaporating.