about 10cm2
100 million
about 144 ping pong balls are in a gross.
There are 16 ounces in a pound, so 16 / 0.110 = 145.5 ping-pong balls would weigh 1 pound. Rounded down, this means that you would need 145 ping-pong balls to equal 1 pound in weight.
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No they do not.
Sure it can. But you'll need a lot a lot of ping pong balls- I believe the ratio is about 1 pound per 15 ping pong balls... then you can lift just about anything.
Approximately 19 million.
The number of ping pong balls needed to get a steel cube to float would depend on the mass of the steel cube.
On a scale of one to ten, the toxicity of Ping pong balls would be 1, because they are made of celluloid, which is not poisonous but flammable.
a number .
0 - ping pong balls are solid in color with no dots