If you can make small enough armbands or life vests, then yes.
no
the way to make a penny float is the same way as making an egg float.All you have to do is add salt alot until you see the penny float and that's about it
if u made the piece ofmetal hollow it can float unless its density is larger than the water densityANSWER:If you make it displace more water than what makes it sink, it will float, as in a ships hull. If you make pontoons out of it, it will float. If you make an enclosed shape that contains enough air, it will float. There should be less density in the item than the water.
no cobalt does not float on water, it has no way for air to seap through, there fore, it cant float
That depends what object you want to float.
Mario floats when you find an air leakage. He will come up to it, swallow the air, and will float.
Yes
SaltWater
current velocities
Saltwater
saltwater
The more salt there is in the water, the easier it is to float.
it checks ocean currents
cuz saltwater is more dense than freshwater
Yes.
Salt water
They swallow stones that aid digestion and help them swim, since they naturally float.