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valentinak56 [21]
4 years ago
5

Electric field lines always begin at _______ charges (or at infinity) and end at _______ charges (or at infinity). One could als

o say that the lines we use to represent an electric field indicate the direction in which a _______ test charge would initially move when released from rest. Which of the following fills in the three missing words correctly? Electric field lines always begin at _______ charges (or at infinity) and end at _______ charges (or at infinity). One could also say that the lines we use to represent an electric field indicate the direction in which a _______ test charge would initially move when released from rest. Which of the following fills in the three missing words correctly? (positive; negative; negative) (positive; negative; positive) (negative; positive; negative) (negative; positive; positive)
Physics
1 answer:
victus00 [196]4 years ago
6 0

Electric field lines always begin at positive charges (or at infinity) and end at negative charges (or at infinity).

One could also say that the lines we use to represent an electric field indicate the direction in which a positive test charge would initially move when released from rest.

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For the answer to the question above,
Ricardo goes a distance (magnitude) of 27, in a direction of 60 degrees W of N 
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<span>How I would solve this is to imagine that the started at (0,0) </span>
<span>And their walking represents vectors. </span>

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<span>X-coordinate = -27sin60 = 27sqrt(3)/2 = 23.383 </span>
<span>Y-coordinate = 27cos60 = 27/2 = 13.5 </span>
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<span>X-coordinate = -16cos(30) = 16sqrt(3)/2 = 13.856 </span>
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<span>So, you have 2 points. </span>
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<span>To find the direction, simply find the slope of the two points, and take the arc-tangent. </span>
<span>The slope = -9.527/21.5 = -0.443 </span>
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<span>This basically translates to, Ricardo must walk 23.899 degrees E of S </span>

<span>They will be 23.518 m apart </span>
<span>Ricardo must walk 23.899 degrees East of South to get to Jane</span>
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