3. Evaluate the solution The problem A 2.0-kg cart with a +2.0 x 10 C charge on

Question

3. Evaluate the solution The problem A 2.0-kg cart with a +2.0 x 10 C charge on it starts at rest 1.0 m from a fixed dome with charge +1,0 x 10" C. The cart is qí = 1x10"C released. Determine how fast it is moving when it is 3.0 m from the fixed-charged dome. Proposed Solution PICTURE AND TRANSLATE The situation is depicted in the illustration to the right. SIMPLIFY We assume that the dome and cart are point particles. REPRESENT PHYSICALLY See the bar chart to the right. REPRESENT MATHEMATICALLY AND SOLVE Top view 1/2 [2(9 x 10)(1 x 102 x 10/(1.0(2.0)1 18m/s. = (a) Identify any missing elements or errors in the solution to the problem. (b) Provide a corrected solution or missing elements if there are errors.

Explanation / Answer

Considering formulas and method, everything is fine in its place, except calculation.

Velocity, v = (18)1/2 = 4.24 m/s (Right answer)

Error: Square root wasn't taken, while solving final value 18, so you need to take square root of 18 to get final velocity.

Please rate my answer if you find it helpful, good luck...

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