|
Title: The radio consumes 1A of current Sam decided not to replace his old battery which has only 20,000 coulombs? Post by: dasmus on Apr 11, 2013 the car engine will require 6000 coulombs of charge. The double feature lasts 4 hours.
a)Will Sam be able to start the car after the movie? b)If not, when should he have left? Title: The radio consumes 1A of current Sam decided not to replace his old battery which has only 20,000 coulombs? Post by: tosey on Apr 11, 2013 If poor Sam needs 6,000 coulombs to start his car, he has only 14,000 coulombs to spare. Since an amp is one coulomb per second, he can run the radio for about 14,000 seconds which turns out to be (14,000/60)= 233 and 1/3 minute. Sam needs to hit the road in 3 hours, 53 and 1/3 minutes.
He's going to miss the end of the movie..... |