Boat 1 goes directly across a stream a distance L and back taking a time t1.Boat 2 goes down stream a distance L and back taking a time t2.If both boats had the same speed relative to the water,which of the following statements is true?
A)t2 > t1
B)t2 < t1
C)t2 = t1
D)t2 = 2t1
E)t2 = 0.5t1
The half-life of a muon is 2.20 s as measured in a stationary reference frame.What is the half life of the muon (in s)when it is moving with a speed of v = 0.800 c?
The half-life of a muon is 2.2 s.How fast is it moving relative to an observer who says its half-life is 4.4 s?
A spaceship moving past the Earth with a speed of 0.800 c signals to the Earth with pulsed laser photons emitted at 10.0-second intervals according to the spaceship's clock.According to observers on Earth who see the flashes,the time interval they measure is