Question

2. (25points) Now consider the following space time coordinates, or 4 vectors, of 2 other events:

Event A: (ctA, xA, yA, zA) = (0.9m ,0.4m, 0.7m, 0m),

Event B: (ctB, xB, yB, zB) = (1.2m, 0.4m, 0.6m, 0m)

Remember what you learned about the invariant interval I in class and discussion and answer the following questions:

(a) Are the two events A and B potentially causally connected ?

(b) Does a reference frame exist in which the two events are simultaneously occurring ? If yes, what frame is it, i.e. what is its speed relative to the system in which the above 4 vectors are given?

Answer 1

part (b)

If you still have any confusion anywhere then please let me know in the comments section.

Thank you.