0.718 kg toy car is powered by one 9V battery (9.00 V) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 30.6%, meaning that 30.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 6.42 s , the car, which is initially at rest, reaches a speed of 1.27 m/s. What is the average current supplied to the car's motor?

0.718 kg toy car is powered by one 9V battery (9.00 V) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 30.6%, meaning that 30.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 6.42 s , the car, which is initially at rest, reaches a speed of 1.27 m/s. What is the average current supplied to the car's motor?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 60PE: Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a...

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