Observer O' sees the light pulse move up and down Observer O sees the light pulse move on a diagonal path and measures a distance of travel greater than 2d. vertically a total distance of 2d. Mirror cAt 2. d 2 Figure 38.6 (a) A mirror is fixed to a moving vehicle, and a light pulse is sent out by observer O' at rest in the vehicle. (b) Relative to a stationary observer O standing alongside the vehicle, the mirror and O' move with a speed vand the light pulse follows a diagonal path. (c) The right triangle for cal- culating the relationship between At and A
Observer O' sees the light pulse move up and down Observer O sees the light pulse move on a diagonal path and measures a distance of travel greater than 2d. vertically a total distance of 2d. Mirror cAt 2. d 2 Figure 38.6 (a) A mirror is fixed to a moving vehicle, and a light pulse is sent out by observer O' at rest in the vehicle. (b) Relative to a stationary observer O standing alongside the vehicle, the mirror and O' move with a speed vand the light pulse follows a diagonal path. (c) The right triangle for cal- culating the relationship between At and A
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Suppose the observer O' on the train as shown 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 when it hits the far wall. Which observer measures the proper time interval between these two events? (a) O' (b) O (c) both observers (d) neither observer
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