A 0.718 kg0.718 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%,36.1%, meaning that 36.1%36.1% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.88 s7.88 s, the car, which is initially at rest, reaches a speed of 3.43 m/s.3.43 m/s. What is the average current supplied to the car's motor?
A 0.718 kg0.718 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%,36.1%, meaning that 36.1%36.1% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.88 s7.88 s, the car, which is initially at rest, reaches a speed of 3.43 m/s.3.43 m/s. What is the average current supplied to the car's motor?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter23: Faraday’s Law And Inductance
Section: Chapter Questions
Problem 8CQ
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A 0.718 kg0.718 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%,36.1%, meaning that 36.1%36.1% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.88 s7.88 s, the car, which is initially at rest, reaches a speed of 3.43 m/s.3.43 m/s. What is the average current supplied to the car's motor?
Expert Solution
Step 1
Given :
m = 0.718 kg
V = 6 V
e = 36.1% = 0.361
t = 7.88 s
v = 3.43 m/s
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