Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V
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Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 750-kg electric car be able to supply:
(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 5.00 x 102 N of force to overcome air resistance and friction?
(c) To travel at a constant 25.0-m/s speed, exerting a 5.00 x 102 N force to overcome air resistance friction? See Figure 20.40.
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