Electric flux through a surface

  • Thread starter haha1234
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  • #1
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Homework Statement



Find the electric flux through the plane surface shown in the figure below if θ = 64.2°, E = 375 N/C, and d = 4.70 cm. The electric field is uniform over the entire area of the surface.

Homework Equations





The Attempt at a Solution



By using the equation:EAcosθ
375x0.0472cos64.2=0.167
I've found that answer is 0.167N.m2/C,but it is not correct.
What is the correct answer?
 

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Answers and Replies

  • #2
jtbell
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Please show us exactly how you calculated your answer.
 
  • #3
109
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Please show us exactly how you calculated your answer.

I'v edited the content of my thread.Tell me of there are any things are need to be added.
 
  • #4
3,816
92
I'v edited the content of my thread.Tell me of there are any things are need to be added.

You have done the calculations incorrectly, what did you input in your calculator?
 
  • #5
109
0
You have done the calculations incorrectly, what did you input in your calculator?

375x0.0472cos64.2=0.167
 
  • #6
3,816
92
375x0.0472cos64.2=0.167

I don't seem to be getting 0.167 with Wolfram Alpha.
 
  • #7
109
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I don't seem to be getting 0.167 with Wolfram Alpha.

But I cannot get he other answer.:cry:
 

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  • #8
1,540
135
E=375
d2 = .002209
Cos64.2° = .435231

Multiply the three quantities and you should get something like .3605
 
  • #9
1,540
135
But I cannot get he other answer.:cry:

because the tool is interpreting the angle 64.2 in radians .
 
  • #10
109
0
E=375
d2 = .002209
Cos64.2° = .435231

Multiply the three quantities and you should get something like .3605

Thanks. I finally found that I have changed the mode of my calculator into radian,so I cannot find the correct answer.
 

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