Problem: A gasoline engine produces power and torque as shown in the following figure. In a direct drive configuration, the wheels of a car spin with the same angular speed as the engine does. If the wheels have a diameter of 45 cm, how fast would the car have to be moving in order for the engine to be producing maximum power? What about maximum torque? 

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A gasoline engine produces power and torque as shown in the following figure. In a direct drive configuration, the wheels of a car spin with the same angular speed as the engine does. If the wheels have a diameter of 45 cm, how fast would the car have to be moving in order for the engine to be producing maximum power? What about maximum torque? 

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