floveldignadicp31vxw floveldignadicp31vxw
  • 24-01-2018
  • Physics
contestada

The moon is about 3.8 X 10^5 km from the earth. Show that its average orbital speed about earth is 1026 m/s

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prosborough198p2ub41
prosborough198p2ub41 prosborough198p2ub41
  • 25-01-2018
orbital speed = orbital path distance/time period = 2*pi*r/T
T=27.3days*24*3600=2358720s 
2*pi*3.8*10^8m/2358720s = 1020m/s

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