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Q. The brakes of a truck cause it to slow down by applying a retarding force of 3.40 103 N to the truck over a distance of 760 m. What is the magnitude of the work done by this force on the truck?

Q. A 10 capacitor initially charged to 30 is discharged through a 1.2 resistor. How long does it take to reduce the capacitor's charge to 7?

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