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What is a non-inertial frame of reference?
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11. Question 11 What is a non-inertial frame of reference? 1 point It is a frame of reference that moves sideways compared to another frame of reference. It is…
In the twin paradox example done in lecture, it seems that Alice’s and Bob’s situations should be parallel or symmetric to each other. That is, Bob observes Alice travel to the star and back, but from Alice’s frame of reference, it is Bob that travels away (in the opposite direction) and returns. Why aren’t their situations symmetrical?
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7. Question 7 In the twin paradox example done in lecture, it seems that Alice’s and Bob’s situations should be parallel or symmetric to each other. That is, Bob observes…
Why is the equating of Einstein’s theory of relativity with the philosophy of relativism an ironic misunderstanding?
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7. Question 7 Why is the equating of Einstein’s theory of relativity with the philosophy of relativism an ironic misunderstanding? 1 point Because in a fundamental way, relativity emphasizes…
Consider a situation that is similar to that in one of the video lectures, i.e., Alice observing Bob traveling from Earth to a star at a certain distance from Earth. Assume that the Lorentz factor for the relative velocity between Alice’s frame of reference (the Earth-star frame of reference) and Bob’s frame of reference (the spaceship frame of reference) has a value of 2. Alice, using her system of clocks, measures the elapsed time it takes Bob to reach the star as 8 years. She also takes a photo of Bob’s clock as he passes the star. According to the photo, how much time has elapsed on Bob’s clock from when he passed by Earth?
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2. Question 2 Consider a situation that is similar to that in one of the video lectures, i.e., Alice observing Bob traveling from Earth to a star at a certain…
In the “good guys vs. bad guys” example done in lecture, why was it concluded that the bad guys would actually not be able to build a ship that traveled faster than the speed of light?
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10. Question 10 In the “good guys vs. bad guys” example done in lecture, why was it concluded that the bad guys would actually not be able to build a…
Consider Bob on Earth. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. Which diagram represents Alice’s world line in Bob’s frame of reference?
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2. Question 2 Consider Bob on Earth. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. Which diagram represents Alice’s world…
