You are an observer in a 100-m long spacecraft traveling from the earth to the moon at 0.8c. (a) What is the proper length of the spacecraft? (b) For a proper time interval of 1 sec., the relativistic time interval for the spacecraft measured from the earth reference frame would be: (c) Time dilation does not apply to all time-dependent physical and biological processes. T/F?
You are an observer in a 100-m long spacecraft traveling from the earth to the moon at 0.8c.
(a) What is the proper length of the spacecraft?
(b) For a proper time interval of 1 sec., the relativistic time interval for the spacecraft measured from the earth reference frame would be:
(c) Time dilation does not apply to all time-dependent physical and biological processes. T/F?
(c) (What is the relativistic length, DL measured from the reference frame of earth?
(d) An APOLLO crew left a flat mirror reflector on the surface of the moon (for all you deniers out there, in the 50th anniversary year of APOLLO 11!). If the average surface-to-surface distance from the earth to the moon is 3.83 x 108 m, then how long does it take moonlight to reach earth?
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