An observer moving with a light clock in a spaceship sees a light ...

[bobthebuilder]

An observer moving with a light clock in a spaceship sees a light flash bouncing up and down between parallel mirrors in 1 nanosecond. An observer at rest outside the spaceship sees the same up-and-down flash in
 
  A) 1 nanosecond also.
  B) less than 1 nanosecond.
  C) more than 1 nanosecond.

Question 2

An astronaut is orbiting a black hole with a mass of 2.0  1031 kg at a distance of 126 km from its center. The astronaut is positioned in the spacecraft so that his 0.10-kg cheeks are 0.050 m on either side of the orbital circle.
 
  What is the net tidal force pulling his cheeks apart? G = 6.67 x 10-11 Nm2/kg2. A) 1,000 N
  B) 2,000 N
  C) 10,000 N
  D) 20,000 N
  E) 100,000 N

[bfulkerson77]

Answer to Question 1

Answer: C

Answer to Question 2

C

[bobthebuilder]

Thanks

[bfulkerson77]

Welcome