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Three forces are applied to an object. Force F1 has a magnitude of 20.3 newtons (20.3 N) and is directed 30.0° to the left of the +y axis. Force F2 has a magnitude of 15.6 N and points along the +x axis. What must be the (a) magnitude and (b) direction (specified by the angle) of the third force F3 such that the vector sum of the three forces is 0 N?

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