Question

5. Two clocks in the reference frame of observer 1 are exactly synchronized. For other observers in motion relative to observer 1, the clocks are: (a) synchronized for all observers, (b) not synchronized, but all observers will agree which of the two clocks is ahead, (c) not synchronized, but different observers may not agree which of the clocks is ahead, (d) either synchronized or not synchronized, depending on the locations of the observers. 6. Which one of the following statements is true? (a) The laws of conservation of energy and momentum are not valid in special relativity, (b) The laws of conservation of energy and momentum are valid in special relativity only if we use definitions of energy and momentum that differ from those of classical physics, (c) According to special relativity, particles have energy only if they are in motion, (d) mc² represents the energy of a particle moving at speed c. 7. A certain particle at rest lives for 1.25 ns. When the particle moves through the laboratory at a speed of 0.91c, what is its lifetime according to an observer in the laboratory? (a) 0.52 ns, (b) 3.01 ns, (c) 1.25 ns, (d) 7.27 ns. 8. In Albert's frame of reference, there is a stick of length LA at rest along the x-axis. Betty is traveling along the x-axis in either the positive or negative direction. In Betty's frame of reference, the length of the stick is: (a) always equal to LA, (b) always greater than LA, (c) always less than LA, (d) either greater than LA or less than LA, depending on the direction of Betty's motion.

          5. Two clocks in the reference frame of observer 1 are exactly synchronized. For other observers in motion relative to observer 1, the clocks are: (a) synchronized for all observers, (b) not synchronized, but all observers will agree which of the two clocks is ahead, (c) not synchronized, but different observers may not agree which of the clocks is ahead, (d) either synchronized or not synchronized, depending on the locations of the observers.

6. Which one of the following statements is true? (a) The laws of conservation of energy and momentum are not valid in special relativity, (b) The laws of conservation of energy and momentum are valid in special relativity only if we use definitions of energy and momentum that differ from those of classical physics, (c) According to special relativity, particles have energy only if they are in motion, (d) mc² represents the energy of a particle moving at speed c.

7. A certain particle at rest lives for 1.25 ns. When the particle moves through the laboratory at a speed of 0.91c, what is its lifetime according to an observer in the laboratory? (a) 0.52 ns, (b) 3.01 ns, (c) 1.25 ns, (d) 7.27 ns.

8. In Albert's frame of reference, there is a stick of length LA at rest along the x-axis. Betty is traveling along the x-axis in either the positive or negative direction. In Betty's frame of reference, the length of the stick is: (a) always equal to LA, (b) always greater than LA, (c) always less than LA, (d) either greater than LA or less than LA, depending on the direction of Betty's motion.

5. Two clocks in the reference frame of observer 1 are exactly synchronized. For other observers in motion relative to observer 1, the clocks are: (a) synchronized for all observers, (b) not synchronized, but all observers will agree which of the two clocks is ahead, (c) not synchronized, but different observers may not agree which of the clocks is ahead, (d) either synchronized or not synchronized, depending on the locations of the observers.

6. Which one of the following statements is true? (a) The laws of conservation of energy and momentum are not valid in special relativity, (b) The laws of conservation of energy and momentum are valid in special relativity only if we use definitions of energy and momentum that differ from those of classical physics, (c) According to special relativity, particles have energy only if they are in motion, (d) mc² represents the energy of a particle moving at speed c.

7. A certain particle at rest lives for 1.25 ns. When the particle moves through the laboratory at a speed of 0.91c, what is its lifetime according to an observer in the laboratory? (a) 0.52 ns, (b) 3.01 ns, (c) 1.25 ns, (d) 7.27 ns.

8. In Albert's frame of reference, there is a stick of length LA at rest along the x-axis. Betty is traveling along the x-axis in either the positive or negative direction. In Betty's frame of reference, the length of the stick is: (a) always equal to LA, (b) always greater than LA, (c) always less than LA, (d) either greater than LA or less than LA, depending on the direction of Betty's motion.

Added by Alexander G.

Question

Please give Ace some feedback