While there are none yet, in the very distant future, most normal matter will be in the form of black dwarfs
Indicate whether the statement is true or false
TRUE
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Which of the following are the jovian planets?
a) Jupiter, Saturn, Uranus, Neptune b) Earth, Mars, Jupiter, Saturn c) Uranus, Neptune, and Pluto d) Mercury, Jupiter, and Saturn e) Mercury, Venus, Earth, Mars
How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 107 calculations per second?
A) 15 ns B) 67 ns C) 11 ns D) 65 ns
A piece of iron rests on top of a piece of wood floating in a bathtub. If the iron is removed from the wood, and kept out of the water, what happens to the water level in the tub?
A) It goes up. B) It goes down. C) It does not change. D) It is impossible to determine from the information given.
Suppose that in a parallel universe, the proton and electron were identical to their counterparts in our own universe EXCEPT that the electron had twice as much charge as our electron
In our present universe, the radius of the first Bohr orbit for hydrogen is a0 and the speed of an electron in that orbit is v0. In the parallel universe (a) what would be the radius (in terms of a0 ) of the first Bohr orbit for hydrogen? (b) what would be the speed (in terms of v0 ) of an electron in the first Bohr orbit for hydrogen?