Author Question: A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his ... (Read 100 times)

rlane42 · **on:** Jul 29, 2018

A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his heartbeat as 70 beats per minute. What is his heartbeat rate according to an observer that is at rest relative to the earth?

A) 69 beats per minute
B) 73 beats per minute
C) 65 beats per minute
D) 61 beats per minute
E) 80 beats per minute

Question 2

Which one has the largest range of possibilities or quantum uncertainty range?

A) proton
B) electron
C) dust grain
D) helium atom
E) water molecule