Question
A 9.0-V battery costs $1.49 and will run a portable CD player for 6.0 hours before running down and needing to be replaced. If this
A 9.0-V battery costs $1.49 and will run a portable CD player for 6.0 hours before running down and needing to be replaced. If this battery supplies a current of 25 mA to the player, what is the cost of the energy provided by the battery in dollars per kWh?
a). $11/kWh
b). $11,000/kWh
c). $110/kWh
d). $1100/kWh
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Physics
Authors: James S. Walker
5th edition
978-0133498493, 9780321909107, 133498492, 0321909100, 978-0321976444
