Physics Question: Okay, I have a series of recorded values for an electric field
ID: 1337854 • Letter: P
Question
Physics Question:
Okay, I have a series of recorded values for an electric field that was gathered from this website:
http://phet.colorado.edu/en/simulation/charges-and-fields
What I have is (0.5, 0) = 36 V/m, (-1,0) = 9 V/m, (0, 1.5) = 4 V/m, (0,-2) = 2.2 V/m
What I have to do is calculate what the electric field "should" have been at the locations of the senors (I mentioned above) and compare to the previous measurements (the V/m values above).
I honestly don't know where to start, I could use some help. Any help is appreciated!
1 nC About.. 90 deg 1 nC E-Fiel Senso 22 Vm -179.9 deg 9 V 179.8 deg 36 Vm 0.7 deg Show E-field Show lo-res V Show hi-res V 211 Show numbers grid plotclear equipotential 3.7 V voltage tape measure Clear All more speedless res meterExplanation / Answer
from the data at (-1,0) E = k*q/x^2 = 9
q = 9*x^2/k
q = 10^-9 C
the sensor is at ( 1.1 , 2.15 )
r = sqrt(1.1^2+2.15^2) = 2.41 m
E = k*q/r^2 = (9*10^9*10^-9)/(2.41^2) = 1.54 V/m
direction = tan^-1(y/x) = tan^-1(1.1/2.15) = 27.1 degrees