Author Question: Event A occurs before event B in a certain frame of reference. In another frame of reference, event ... (Read 173 times)

jilianpiloj · **on:** Jul 29, 2018

Event A occurs before event B in a certain frame of reference. In another frame of reference, event A could occur

A) after event B.
B) simultaneous with event B.
C) either of these
D) neither of these

Question 2

A 30-cm steel rod, 1.0 cm in diameter, supports a 300-kg mass. What is the change in length of the rod? Young's modulus for steel is 20 1010 N/m2.

A) 5.6 10-5 m
B) 6.5 10-5 m
C) 5.6 10-6 m
D) 6.5 10-6 m
E) 6.5 10-4 m