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?
(a) a0/2 (b) 2v0
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Thermoset polymers _________be melted for processing or recycling.
Fill in the blank(s) with the appropriate word(s).
A ____ is believed to occur when energy, stored in a twist in the solar magnetic field above a sunspot, is suddenly released
a. solar flare b. supergranule c. spicule d. coronal hole e. none of the above
A wave is described by y = 10 sin (4.0pt – 6.0px). If the equation is in SI units with the units suppressed, what is its speed?
a. 2/3 m/s c. 1/6 m/s b. 3/2 m/s d. 1/4 m/s
A "force" could be best described as
A) something that a body possesses, that enables it to keep moving. B) a mystical aura that emanates after midnight from physics laboratories. C) something one body does to another body that keeps the second body moving. D) something one body does to another body that can cause the second body to accelerate. E) something that a body possesses, that enables it to do work.