The last answer I got on this question was wrong, please be sure of your answer.

Question

The last answer I got on this question was wrong, please be sure of your answer.

A stationary particle of charge q- 2.9 x 108 cC is placed in a laser beam (an electromagnetic wave) whose intensity is 2.1 x 103 W/m2. Determine the maximum magnitude of the (a) electric and (b) magnetic forces exerted on the charge. If the charge is moving at a speed of 3.7 x 104 m/s perpendicular to the magnetic field of the electromagnetic wave, find the maximum magnitudes of the (c) electric and (d) magnetic forces exerted on the particle (a) F- (b) F = (c) F- (d) F

Explanation / Answer

According to the question

As we know that

Given,

q = 2.9*10^-8 C

I = 2.1*10^3 W/m^2

v = 3.7*10^4 m/sec

A. I = E^2/(2*c*uo)

E = sqrt(2*c*uo*I)

=sqrt(2*3*10^8*4*3.14*10^-7*2.1*10^3)

E = 1257.99 N/C

Then,

F = qE = 2.9*10^-8*1257.99

F = 3.64*10^-5 N

Then,

2. F = 0 because the charge is stationary

Therefore,

3. F = qE = 3.64*10^-5 N

4. F = qVB

So,

B = E/c

F = qvE/c

= 2.9*10^-8*3.7*10^4*1257.99/(3*10^8)

= 4.49*10^-9 N

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