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1) A 11.0-V battery is connected to a 4.40-μF capacitor. How much energy is stored in...

1) A 11.0-V battery is connected to a 4.40-μF capacitor. How much energy is stored in the capacitor?

J

2) Calculate the speed (in m/s) of an electron and a proton with a kinetic energy of 1.10 electron volt (eV). (The electron and proton masses are me = 9.11 ✕ 10−31 kg  and mp = 1.67 ✕ 10−27 kg.  Boltzmann's constant is  kB = 1.38 ✕ 10−23 J/K.)

hint: Use the conversion 1 eV = 1.60 ✕ 10−19 J.

(a) an electron?

m/s

(b) a proton?

m/s

(c) Calculate the average translational kinetic energy in eV of a 3.39 ✕ 102 K ideal gas particle. (Recall from Topic 10 that 1/2 mv2 = 3/2 kBT)

ev

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Answer #1

in part c of 2nd question i made some assumptions

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