Equipotentials are lines along which
a. the electric field is constant in magnitude and direction.
b. the electric charge is constant in magnitude and direction.
c. maximum work against electrical forces is required to move a charge at constant speed.
d. a charge may be moved at constant speed without work against electrical forces.
e. charges move by themselves.
d
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If the minimum x-ray wavelength produced is 17 × 10^?12 m, through what potential are the electrons accelerated in order to generate this radiation? (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, and 1 eV = 1.60 × 10^?19 J)
a. 1.17E+5 V b. 2.44E+4 V c. 1.10E+4 V d. 7.31E+4 V e. 1.87E+5 V
Exhibit 17-2
The figure below shows a sine wave on a string at one instant of time.
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Use this exhibit to answer the following question(s).
Refer to . Which of the graphs below shows a wave where the frequency and wave velocity are both doubled?
a.
Synchrotron radiation occurs when high speed electrons move through a magnetic field
Indicate whether the statement is true or false
If a solar eclipse occurs when the Moon is relatively far from Earth, so that its full shadow (umbra) does not reach Earth, then people directly behind the full shadow will experience
A) a penumbral eclipse. B) a total solar eclipse. C) a partial solar eclipse. D) an annular eclipse. E) no eclipse.