Two identical particles, each with a mass of 2.0 ?g and a charge of 25 nC, are released simultaneously from rest when the two are 4.0 cm apart. What is the speed of either particle at the instant when the two are separated by 10 cm?
a. 7.3 m/s
b. 9.8 m/s
c. 9.2 m/s
d. 6.5 m/s
e. 4.6 m/s
d
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The radius of planet Relpek is identical to that of Earth, yet the mass is twice that of Earth’s. Your weight on Relpek, compared to your weight on Earth, is
A. quartered. B. halved. C. the same. D. doubled. E. quadrupled.
At what speed are lengths contracted to half and times dilated by a factor of 2?
What will be an ideal response?
Which of the following strengthening processes in metals does not require the addition of foreign atoms or compounds to a pure metal?
(a) Grain boundary (b) Dispersion (c) Precipitation (d) Solid solution
Using the velocity transformation formula, calculate the speed in the "rest frame" of a particle which is seen to be moving at c in a "moving frame"
What will be an ideal response?