The magnitude of the resultant of two vectors cannot be less than the magnitude of either of those two vectors.
A) True
B) False
Question 2
A certain unstable particle has a mean lifetime of 1.52 10-6 s. This is the time interval between its creation in a nuclear process and its extinction into decay products, as measured in a frame of reference at rest with respect to the particle.
An average such particle is observed by a scientist on Earth to travel 342 m in its lifetime. What is the speed of the particle relative to Earth? (c = 3.00 108 m/s)
A) 0.821c
B) 0.681c
C) 0.600c
D) 0.551c
E) 0.335c