lays20001

05.05.2020 • 

Physics

A square energy pulse traveling to the right with a speed v-2 m/s is given by the equation: f(x,t)-E if Ix-vtl a. Plot this pulse as a function of x at t-0.
b. Plot this pulse as a function of x at t-4 s.
c. Expand this pulse as an infinite superposition of harmonic traveling waves of the type cos(ot-kx) where co/k-v

Ответ:

ProfS7843

16.03.2020

Physics

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Use the formula for energy stored between the plates of a capacitor:

where Q is he charge (given) and U is the electric potential (aka voltage), given.

The stored energy is 2.2 10^{-10} Joules.

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