Divide the mass of the object by the volume.
no - imagine 60 tiny 1cm x 1cm x 1cm cubes. Then imagine you have 60 of them. That many tiny cubes does not fill a whole backpack.
Clergy
they are about the same. it really depends on the type of backpack or parachute backpack you are talking about.
"Backpacking" is traveling while living out of only a backpack, usually while staying in hostels. Europe is a great place to backpack, because the large volume of travelers means a good support system. If you are intending to backpack Europe, try purchasing a guide book designed for low-budget travelers, such as "Let's Go Europe" or Lonely Planet's "Europe on a Shoestring." Your local outfitter store should be able to provide the gear (such as a sturdy, large backpack) and advice you need to get yourself set to go.
Mybe the materials on which they use to make a backpack
who cares about this bob does
determind, newland, opened, raymond
I was crying because I lost my backpack. Can you grab my backpack please? I stuffed the book in my backpack.
a see through backpack
When you get to the right rank, you get the backpack as a reward. The backpack is permanent (and free).
surveing is art of determind actual lenth and haight.