The capacity of a storage battery, such as those used in automobile electrical s

Question

The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A h) . A 50 A h battery can supply a current of 50 A for 1.0 h, or 25 A for 2.0 h, and so on.

(a) What total energy can be supplied by a 15 V, 60 A h battery if its internal resistance is negligible?
3.24X10^6 J

(b) What volume (in liters) of gasoline has a total heat of combustion equal to the energy obtained in part (a)? (See Section 15.7. The density of gasoline is 900 kg/m3.)
______ liters

(c) If a generator with an average electrical power output of 0.90 kW is connected to the battery, how much time will be required for it to charge the battery fully?
1  h

NEED THE ANSWER FOR B!

Explanation / Answer

B)

V = 3.24 x 106/46 x 106 J / kg * 900 kg / m3    =

                       = 7.826 x 10-5 m3

1000 liters in m3

so, 7.826 x 10-2 litersor

        0.07826 L

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