sq45bo.theexpertta.com/Common keTi Assignment aspx Home I student: britney gonza
ID: 1536813 • Letter: S
Question
sq45bo.theexpertta.com/Common keTi Assignment aspx Home I student: britney gonzalesestudentstamukedu My Aecount Class Management Self Assessment Quiz #1 Begin Date: 131/2017 01.00 AM Due Date: 225/2017 ll 59:00 PM End Date: 2/25/2017 11:59:00 PM 20%) Problem 2: Two charges lie in a line along thexaxis. Charge l isqu 0.55 Cand charge 2 is q2 2.2 C. They are each a distance of d-0.080s m from the ment Status Dtheexpertta.com k here for iled view 4 What is the distance on the x-axis from the origin at the electric field will be zero. Give your answer in meters. which Status 456 cotan0 asin() acos() 1 2 3 Partial atan() acotan0 sinh() Partial Degrees Radians Feedback 3% deduction per feedback Hints: dedantion per hat remawang HurtsExplanation / Answer
E = kQ / x^2 ..............formula
Enet = E1 + E2
Enet = 0.55k/x^2 -2.2k/(x + 0.0805)^2 = 0
0.55k/x^2 = 2.2k/(x + 0.0805)^2
0.55/x^2 = 2.2/(x + 0.0805)^2
Cross-multiplying and expanding the bracket gives
0.55(x + 0.0805)^2 = 2.2x^2
0.55(x^2 + 0.161x + 0.006480) = 2.2x^2
0.55x^2 + 0.08855x + 0.003564 = 2.2x^2
1.65x^2 - 0.08855x - 0.003564 = 0
solve quadratic equation,
X = 0.08 and x = -0.0268
The answer to go with is x = 0.08 m. This corresponds to 0.08 m to the left of the +Q charge. The other point is
between the charges
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