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Q. The Speed time graph of a particle moving along a fixed direction is shown below. Obtain the distance travelled by the particle between t=0 and t=10s. What is the average of the particle over this interval.

Q. Suppose in the drawing that I1 = I2 = 11.5 A and that the separation between the wires is 0.0216 m. By applying an external magnetic field (created by a source other than the wires) it is possible to cancel the mutual repulsion of the wires. This external field must point along the vertical direction. What is the magnitude of the external field?

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