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Physics, 31.08.2019 04:30 ToriChristine
Dad is driving the family station wagon to grandma's house when he gets tired and pulls over in a roadside rest stop to take a nap. junior, who is sitting in the back seat, watches the trucks go by on the highway and notices that they make a different sound when they are coming toward him than they do when they are moving away. a if a truck with a frequency of 85.0 hz is traveling toward junior with a speed of 27.0 m/s, what frequency does junior hear as the truck approaches? b after the truck passes, what frequency does junior hear as the truck moves away?
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