What is the kinetic energy of a particle of mass m thats has atotal energy four times its rest energy?a) 5 mc^2b) 4 mc^2c) 3 mc^2d) 2 mc^2e) 1 mc^2
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A 15-μF capacitor and a 30-μF capacitor are connected in series,and charged to a potential difference of 50 V. What is theresulting charge on the 30-μF capacitor?
1.)0.80 mC
2.)0.60 mC
3.)0.50 mC
4.)0.40 mC
Three particles have rest energies and total energies as follows:
(a) Which particle has the largest mass?
(b) Which particle has the highest speed?
(a) Which particle has the largest kinetic energy?
A classical view of the electron pictures it as a purely electric entity, whose Einstein rest mass energy, E = mc^2 is the energy stored in its electric field. If the electron were a sphere with charge distributed uniformly over its surface, what radius would it have in order to satisfy this condition? Note: Your answer for the electron's "size" isn't consistent with modern quantum mechanics or with experiments that suggest the electron is a true point particle.