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A 840-kg drag race car acceleratesfrom rest to 105 km/h in 0.80 seconds.
(a) What is the change in momentum of the car?
kg·m/s
(b) What average force is exerted on the car?
N
An earth satellite moves in a circular orbit with an orbital speed of 6000m/s. Find the time of one revolution of the satellite
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How several meters away is a cliff if an echo is heard 0.587 s after the original sound? Assume that sound traveled at 343 m/s on that day.
Relative to waiting line models: a. What is meant by the terms single-channel system and multiple-channel system? If a crew offour workers operates as a team in servicing a customer, how many chan- nels does the system have?
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