Key weight: depends on the manufactorer of the car or house key. Did you mean key as in Kilo as in kilogram?
A rough guide is 2.2 lbs per kilo.
One kilogram is one thousand grams
One gram = 0.035273962 ounces
One pound = 16 ounces
One kilogram = 2.2046226 pounds http://www.onlineconversion.com/auto_convert.pl
Weigh the key. With water, fill a graduated cylinder to a mark that is deep enough to cover the key. Now place the key in the water, and measure how much the water goes up. That will give you the volume of the key. Density is weight divided by volume.
You would weigh about 1/6 as much on the moon as you weigh on earth if you were not wearing heavy equipment. I would weigh about 560 ounces on the moon.
It would weigh 10kg.
You weigh about 84.66 pounds.
you would weigh 20 pounds
Depends on the size.
40g
3,846 pounds (SI Units)
A medieval key would typically weigh around 2-4 ounces, depending on the size and material used. Keys during this time were often made of iron or bronze.
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about 600lb
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