looking for someone to help me wit hw physical cause? I keep getting .. wrong answer?
Car batteries are by two issues: (1) A = Start current of the battery can produce 30.0 seconds while maintaining a voltage across the least 7.2 V (2) spare capacity = number of minutes the battery can occur when a 25 A current to maintain a voltage across the least 10.5 V. A particular battery is advertised as having 715 amps of starting and reserve capacity of 125 minutes. Compare these two notes in determining the ratio of energy supplied by the reserve capacity from A to boot. RC / CA =
Power = Voltage * Current P = power per second = I * V = E / t reorganize For E = T * I * V RCenergy = 30 * 715 * 7.2 = 154440 CAenergy = (125 * 60) * 25 * 10.5 = 1968750 RC / CA = 0.0784 I think that's what you are after
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