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Compute all parts of given question:
Question: A person riding in the back of a pickup truck traveling at 65km/h on a straight, level road throws a ball with a speed of 20km/h relative to the truck in the direction of the truck's motion.
Part A: What is the velocity of the ball relative to a stationary observer by the side of the road?
Part B: What is the velocity of the ball relative to the driver of a car moving in the same direction as the truck at a speed of 95km/h?
Don't just give me the answer, explain your steps as well.
Starting from rest, a constant force F = 100 N is applied to the free end of a 45-{\rm m} cable wrapped around the outer rim of a uniform solid cylinder, How Long does it take the cable to unwrap
If you move towards a pipe at a speed of 3.3m/s, what frequency will you hear from this organ pipe? speed of sound is 330m/s
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A train engineer blows a whistle that has a frequecy of 4.0 X 10^2 hz as the train approaches a station. if the speed of the train id 25 m/s, what frequency will be heard by a person at station.
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A “synchronous” satellite, which always re- mains above the same point on a planet’s equator, is put in orbit about a planet similar to Jupiter. This planet rotates once every 6.5 h, has a mass of 1.8 × 1027 kg and a radius of 6.99 × 107 m.
An astronaut at rest on Earth has a heartbeat rate of 74 beats/min. When the astronaut is traveling in a spaceship at 0.80 c, what will this rate be as measured by an observer also in the ship
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