Question: A wheel is driven by an engine that produces 4 . 2 kJ per minute, with the torque developed being 0 . 2 2 Nm

A wheel is driven by an engine that produces 4.2 kJ per minute, with the torque developed being 0.22 Nm. Due to energy being lost as heat, the process is 69.4% efficient. How many revolutions per second does the wheel make?

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