Serway_PSE_quick_ch39

Serway_PSE_quick_ch39 - Physics for Scientists and...

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Unformatted text preview: Physics for Scientists and Engineers, 6e Chapter 39 - Relativity Which observer in the figure below sees the balls correct path? 1 2 3 33% 33% 33% 1 2 3 4 5 1. the observer in the truck 2. the observer on the ground 3. both observers While the observers measurements differ, both are correct. A baseball pitcher with a 90-mi/h fastball throws a ball while standing on a railroad flatcar moving at 110 mi/h. The ball is thrown in the same direction as that of the velocity of the train. Applying the Galilean velocity transformation equation, the speed of the ball relative to the Earth is 1 2 3 4 5 20% 20% 20% 20% 20% 1 2 3 4 5 1. 90 mi/h 2. 110 mi/h 3. 20 mi/h 4. 200 mi/h 5. impossible to determine The Galilean velocity transformation gives us u x = u x + v = 110 mi/h + 90 mi/h = 200 mi/h. Suppose the observer O on the train in the figure below aims her flashlight at the far wall of the boxcar and turns it on and off, sending a pulse of light toward the far wall. Both O and O measure the time interval between when the pulse leaves the flashlight and it hits the far wall. Which observer measures the proper time interval between these two events?...
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This note was uploaded on 01/19/2010 for the course PHYS 200 taught by Professor Davies during the Spring '08 term at Roger Williams.

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Serway_PSE_quick_ch39 - Physics for Scientists and...

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