These questions relate to Einstein\'s Theory ofRelativity: True or False? 1. Two

Question

These questions relate to Einstein's Theory ofRelativity: True or False? 1. Two events that are simultaneous in one frame of referenceare simultaneous in a second frame moving relative to thefirst. Multiple Choice: 2. Time is: a. dependent on the observer b. absolute c. the same for different observers d. simultaneous in all cases e. never changing (I was thinking either a or d) One Question: 3. For an electron with speed 0.880c, calculate its kineticenergy if its total energy is 0.980 MeV. Any help is appreciated. These questions relate to Einstein's Theory ofRelativity: True or False? 1. Two events that are simultaneous in one frame of referenceare simultaneous in a second frame moving relative to thefirst. Multiple Choice: 2. Time is: a. dependent on the observer b. absolute c. the same for different observers d. simultaneous in all cases e. never changing (I was thinking either a or d) One Question: 3. For an electron with speed 0.880c, calculate its kineticenergy if its total energy is 0.980 MeV. Any help is appreciated.

Explanation / Answer

1. False 2. (a) 3. Kinetic energy K = E-mc2                               = (0.98MeV) - (0.511MeV)                               = 0.469MeV                               = (0.98MeV) - (0.511MeV)                               = 0.469MeV                               

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