Dimensional analysis for the plasma oscillation frequency: A plasma (hot. ionized gas. with lots of free electrons) of number de
nsity ne (number of free electrons per unit volume), can undergo periodic oscillations if disturbed. The relevant dimensional factors are e (the fundamental charge), m (the electron mass), the fundamental constant of electricity Co, and ne. Using dimensional analysis, find the oscillation frequency. *jp, in terms of those four quantities. That is, write omega_P alpha n_epsilon^alpha e^beta m^gamma e_0^delta and solve for alpha, beta, gamma, delta by matching dimensions. Recall that e_0 is defined from Coulombs law for the force between two charges, q_1, q_0 via. F_1,2 = q_1q_2/4 pi e_0 r^2
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Answer:
(a) increase
Explanation:
On a line graph; we have the x-axis to the positive side and the negative side .In a positive x-axis direction, the force is usually positive, vice versa the negative side as well.
The change in the potential energy of a charge field-system can be given as:
where;
q = positive test charge
E = Electric field
ds = displacement between thee charge positions
θ = Angle between the electric field and the displacement.
Given that:
Charge of the particle = -q
displacement = (60.0 -20.0)cm = 40.0 cm
θ = 0
Replacing our values in the above equation, we have:
Since the potential energy of the system is positive, therefor the electric potential energy also increases.