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An all-electric car (not a hybrid) is designed to run from a bank of 12.0 V batteries with total energy storage of 2.30 ✕ 107 J. (a) If the
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An all-electric car (not a hybrid) is designed to run from a bank of 12.0 V batteries with total energy storage of 2.30 ✕ 107 J. (a) If the electric motor draws 8.80 kW as the car moves at a steady speed of 20.0 m/s, what is the current (in A) delivered to the motor? A (b) How far (in km) can the car travel before it is “out of juice”? km (c) What If? The headlights of the car each have a 55.0 W halogen bulb. If the car is driven with both headlights on, how much less will its range be (in m)? m
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Physics
4 years
2021-08-18T19:56:12+00:00
2021-08-18T19:56:12+00:00 1 Answers
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Answer:
a)
b)
c)
Explanation:
Given:
a)
power drawn by the car,
Now the Current delivered to the motor:
we the relation between the power and electrical current,
b)
Distance travelled before battery is out of juice:
we first find the time before the battery runs out,
Now the distance:
c)
When the head light of 55 W power is kept on while moving then the power consumption of the car is:
Now the time of operation of the car:
Now the distance travelled: