If the current in a wire is tripled, what effect does this have on the electron drift velocity in the wire?
a. It stays the same.
b. It triples.
c. It decreases by a factor of three.
d. It increases by a factor of nine.
b
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The energy of a particle in the second EXCITED state of a harmonic oscillator potential is 5.45 eV. What is the classical angular frequency of oscillation of this particle?
(1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s) A) 3.31 × 1015 rad/s B) 2.08 × 1016 rad/s C) 4.97 × 1015 rad/s D) 6.95 × 1015 rad/s
The maximum mass of a white dwarf is ________
A) limitless; there is no theoretical limit to the maximum mass of a white dwarf B) about the mass of our Sun C) about 1.4 times the mass of our Sun D) about 3 times the mass of our Sun
Which temperature scale has the smallest sized degrees?
A) Fahrenheit B) Celsius C) Kelvin D) none of the above
A refrigerator is an example of a heat mover
Indicate whether the statement is true or false