Assuming 94.0% efficiency for the conversion of electrical power by the motor, what current (in A) must the 12.0 V batteries of a 755 kg electric car be able to supply in order to do the following? (a) to accelerate from rest to 25.0 m/s in 1.00 min (b) to climb a 2.00 x 10² m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 5.20 x 10² N of force to overcome air resistance and friction (c) to travel at a constant 25.0 m/s speed, exerting a 5.20 x 102 N force to overcome air resistance and friction A

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
Chapter21: Current And Direct Current Circuits
Section: Chapter Questions
Problem 19P
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Assuming 94.0% efficiency for the conversion of electrical power by the motor, what current (in A) must the 12.0 V
batteries of a 755 kg electric car be able to supply in order to do the following?
(a) to accelerate from rest to 25.0 m/s in 1.00 min
A
(b) to climb a 2.00 x 102 m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 5.20 x 10² N of force to
overcome air resistance and friction
A
(c) to travel at a constant 25.0 m/s speed, exerting a 5.20 x 10² N force to overcome air resistance and friction
A
Transcribed Image Text:Assuming 94.0% efficiency for the conversion of electrical power by the motor, what current (in A) must the 12.0 V batteries of a 755 kg electric car be able to supply in order to do the following? (a) to accelerate from rest to 25.0 m/s in 1.00 min A (b) to climb a 2.00 x 102 m high hill in 2.00 min at a constant 25.0 m/s speed while exerting 5.20 x 10² N of force to overcome air resistance and friction A (c) to travel at a constant 25.0 m/s speed, exerting a 5.20 x 10² N force to overcome air resistance and friction A
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