Charge A has 10 electric field lines coming out, charge B has 20 lines coming out, and charge C has 30 lines coming in. Which pair of these charges will have the largest force between them if placed one cm apart?
a. A and B
c. More information is needed. b. B and C
d. C and A
B
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An extrasolar planet is
a. a planet that orbits our Sun that we have not yet discovered. b. one not needed for the formation of our solar system which is kept in a special area just in case. c. a planet found orbiting around a star other than the Sun. d. another name for an asteroid. e. a planet extra close to our Sun.
Which of the following choices is not a way by which we can study the inside of the Sun?
A) We can send a space probe into the Sun's photosphere. B) We can probe the interior of the Sun by studying the vibrations in its photosphere. C) We can make a computer model of the Sun's interior that allow us to predict the observable properties of the Sun. D) We can study solar neutrinos.
During each cycle, a heat engine takes in 4.0 J of heat, does 1.0 J of work, and expels 3.0 J of heat. What is its efficiency?
What will be an ideal response?
The first law of thermodynamics is a restatement of the conservation of
A) momentum. B) energy. C) electric charge. D) all of the above E) none of the above