Homework Help: Sceince

Posted by Beth on Sunday, June 10, 2012 at 12:45pm.

The drawing shows an edge-on view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of 1.7 m^2, while surface 2 san area of 3.2 m^2. The electric field in the drawing is uniform andhas a magnitude of 250 N/C. Find the electrical flux through surface 1 and surface 2

I have tried to do the problem multiple amounts of time but I never seem to get the correct answer. For surface 1 its suppose to be 350 Nm^2/c and surface 2 is suppose to be 460 Nm^2/c. This is what I have gotten so far:

1: EACos(pheta) 250(1.7)(cos 55)= 9.4028 Nm^2/c
2: EACose(pheta) 250(3.2)(cos 35)= -722.95

Please help with anything you can!

sceince - Dan, Tuesday, July 10, 2012 at 1:08am
close, you need to change your theta.
A) 250(1.7)cos35
B) 250(3.2)cos55

this will work, just did it for my homework and they are correct. My E and A are different but the theta was the same.
Sceince - CombatVetUSMC, Tuesday, July 10, 2012 at 1:39am
changed my login from the above entry.

A) 250(1.7)cos35 = 348.13 Nm2/C
B) 250(3.2)cos55 = 458.86 Nm2/C

Hopefully this works for you

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