SOLUTION: If a plane was traveling the speed of light at 3×10 8 m/sec, how long (days) would the plane require to circumnavigate the Earth (diameter= 4.18×10 7 ft) ? How long would the pla
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Question 624829: If a plane was traveling the speed of light at 3×10 8 m/sec, how long (days) would the plane require to circumnavigate the Earth (diameter= 4.18×10 7 ft) ? How long would the plane require in microseconds? I need help setting up the problem Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! If a plane was traveling the speed of light at 3×10 8 m/sec, how long (days) would the plane require to circumnavigate the Earth (diameter= 4.18×10 7 ft) ?
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Change meters to feet
1 meter = 3.21 feet
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c = 3E8*3.21 = 9.63E8 ft/sec
d = r*t
d = 4.18E7*pi feet
d =~ 13.14E7 ft = 1.314E8 feet
t = d/r = 1.314E8/9.63E8 =~ 0.136 sec
= 1.36E-1 seconds
1 day = 86400 seconds
--> 1.36E-1/86400 days
=~ 1.5783E-6 days
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How long would the plane require in microseconds?
1.36E-1 seconds
= 1.36E5 usecs
= 136,000 usecs
