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Q. A 16.4 kg wagon is pulled along the level ground by a rope inclined at 22.8° above the horizontal. A friction force of 27.7 N opposes the motion. How large is the pulling force it the wagon is moving with a constant speed?

Q. An electron is accelerated by a constant elec-tric field of magnitude 202 N/C.Find the magnitude of the acceleration of the electron.Answer in units of m/s2.

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