Chapter 28: Q21CQ (page 1028)
Given the fact that light travels at c, can it have mass? Explain.
According to special relativity, no. Nothing with mass can travel faster than the speed of light.
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What is ฮณ? (a) if v=\({\bf{0}}.{\bf{100c}}\)? (b) If v=\({\bf{0}}.{\bf{900c}}\)
If relativistic effects are to be less than 3%, then ฮณ must be less than 1.03. At what relative velocity is ฮณ = 1.03?
Is the relativistic Doppler effect consistent with the classical Doppler effect in the respect that\({{\rm{\lambda }}_{{\rm{obs}}}}\)is larger for motion away?
Suppose a particle called a kaon is created by cosmic radiation striking the atmosphere. It moves by you at 0.980c0.980c, and it lives 1.24ร10-8when at rest relative to an observer. How long does it live as you observe it?
How does modern relativity modify the law of conservation of momentum?
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