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Astronauts Begin Final Spacewalk To Repair Hubble
An anonymous reader writes "Astronauts John Grunsfield and Andrew Feustel began the fifth and final spacewalk of their Hubble Space Telescope repair mission this morning at 8:20AM. During their spacewalk the two will install the second battery group replacement in an equipment bay above the Wide Field Camera 2 and next to the compartment where the first battery set was installed on the second spacewalk. Each of the battery module weighs 460 pounds and contains three batteries. The batteries provide electrical power to support Hubble's operations during the night when there's no sun to power the solar arrays."
Or you could say "the batteries have a mass of <whatever> kilograms"
Because no one would have a clue WTF the Imperial unit of mass is.
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That's the only thing holding you back?
What is the equivalent of that in unladen swallows?
Honesty may be the best policy, but apparently by elimination, dishonesty is the second best policy.
According to my back-of-an-envelope calculations, I get their true weight to be 1729N.
F=GMmr^-2
=G * Mass of earth * mass of box * (Earth's radius + Hubble orbit height)^-2
=(6.67x10^-11 * 5.9742x10^24 * 208.7) * ((6378 + 559)x10^3)^-2
=1729.20 N
Ah, but I see you failed to calculate the mass of your envelope...
African or European?
but the ipod and iphone can not?