The question depends on what the aluminium is floating in. It is denser than water so will sink a block will sink in water without any pennies. If, on the other hand, it is shaped (like a boat) then the number of pennies required will depend on the shape.
Only one penny is required, if it is moving fast enough to puncture the hull. If you are talking about the weight of the pennies, then aluminum boats come in various sizes, so they do not all have the same penny carrying capacity. A ten foot long aluminum rowboat can carry a million pennies without sinking. Try it.
The answer depends on:How well the foil boat is made, andWhich country's currency.
(2) Sink-ing.
7
I'm pretty sure it it's 5si-i-i-i-ink
Only one penny is required, if it is moving fast enough to puncture the hull. If you are talking about the weight of the pennies, then aluminum boats come in various sizes, so they do not all have the same penny carrying capacity. A ten foot long aluminum rowboat can carry a million pennies without sinking. Try it.
Sink
The reason the pennies sink in water is because of an idea called density. The pennies have more density than the water, and so the pennies sink. Anything with more density than water will sink in water, but other objects that have less density than water will float.
i do not know the answer but i do know that once it weights 93g it will sink.
They will sink in most common fluids but not all.
Float
Aluminum will sink in gasoline because its density (2.7g per cc) is greater than that of gasoline (about 0.7g per cc).
Yes
The answer depends on:How well the foil boat is made, andWhich country's currency.
Generally speaking, a denser substance will sink in a less dense substance. Assuming standard temperatures, since aluminum has a density of about 2.7 grams per cubic centimeter and water only has 1 gram per cc, aluminum would sink. A thin aluminum foil could float by virtue of the surface tension on water (but if submerged, will sink). An aluminum boat would float because it displaces a greater mass of water than its own weight. An aluminum block could also float on a liquid of higher density than the aluminum.
That depends what its depth is in centimetres.
It will sink, but sometimes a little bit will get stuck on the surface for a little while. It will sink too if you give it a little bit of time.