What is a non-inertial frame of reference?
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…
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Of the world lines shown below, which represents an object moving with the highest velocity?
10. Question 10 Of the world lines shown below, which represents an object moving with the highest velocity? 1 point
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Consider Bob on Space Station Omega. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. She then quickly reverses direction and heads back to the left, but stops and remains motionless (compared to Bob) before she reaches Bob’s position. Which diagram represents Alice’s world line in Bob’s frame of reference?
8. Question 8 Consider Bob on Space Station Omega. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. She then quickly…
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Which world line represents an object that started at a nonzero location on the x axis and then moved to the right at constant velocity?
4. Question 4 Which world line represents an object that started at a nonzero location on the x axis and then moved to the right at constant velocity? 1 point…
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Consider person #1 moving to the right (positive x direction) at a constant velocity v with respect to person #2. Assume that at time t = 0 the two were side by side. Each person measures distances using the same units (such as meters), and each person uses their own location as the origin for their measuring system. Let the measurements of person #1 be represented by x1 and the measurements of person #2 be represented by x2. Consider an event that happens at some position x1 and time t (after time t = 0), according to person #1. Person #2 measures the location of this event at position x2. Would the value of x2 be greater than or less than x1?
3. Question 3 Consider person #1 moving to the right (positive x direction) at a constant velocity v with respect to person #2. Assume that at time t = 0…
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Consider Bob on Earth. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the left. Which diagram represents Alice’s world line in Bob’s frame of reference?
2. Question 2 Consider Bob on Earth. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the left. Which diagram represents Alice’s world…
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What is the “photo clock principle”?
1. Question 1 What is the “photo clock principle”? 1 point The idea that photographs cannot be trusted if they don’t have a timestamp on them. The idea that…
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Consider Bob on Space Station Omega. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. She then quickly reverses direction and heads back to the left, but stops and remains motionless (compared to Bob) before she reaches Bob’s position. Which diagram represents Bob’s world line in Alice’s frame of reference?
8. Question 8 Consider Bob on Space Station Omega. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. She then quickly…
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Consider Bob on Space Station Omega in deep space. At time t = 0, Alice flies by in her spaceship at constant velocity v, heading to the right, while Kris flies by in another spaceship at the same velocity as Alice, but heading left. Which diagram represents the world lines of Alice and Bob in Kris’s frame of reference?
5. Question 5 Consider Bob on Space Station Omega in deep space. At time t = 0, Alice flies by in her spaceship at constant velocity v, heading to the…
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According to Einstein, which gift that he possessed was among the most valuable to his work?
8. Question 8 According to Einstein, which gift that he possessed was among the most valuable to his work? 1 point The gift for absorbing knowledge. The gift of…