Which of the following depends on the observer's frame of reference?
A. the mass of the proton
B. the length of a meter stick
C. the half-life of a muon
D. all of the given answers
Answer:D
Which of the following depends on the observer's frame of reference?
A. the mass of the proton B. the length of a meter stick C. the half-life of a muon D. all of the given answers