15 in cube = 3375 cu in, 5 in cube = 125 cu in, 24 of those = 3000 cu in, so the large cube weighs about one eighth (12½%) more.
copper and iron
The Iron Hypothesis was a proposal that in certain parts of the ocean, the limiting factor on phytoplankton growth was lack of trace metals, in particular Iron (Fe). This hypothesis has been tested and proved to be correct. In regard to "spheres", the question therefore fails to make any sense.
Coat the interior and the exterior of your cast iron griddle in butter. Place the griddle in the oven at 200 degrees for a couple of hours. Wipe the griddle off after.
Maltese or Iron Cross!
Wrought Iron fences are very strong, but typically used for more decorative installations. If you are looking to keep people out, or things out of view, you may want to consider a strong chain link fence with the slats added for limited visibility.
Iron weighs 0.284 pounds per cubic inch, while cast iron is about 0.25-0.27 pounds per cubic inch, due to how it is made and processed. So pure iron is heavier
Iron is magnetic, lead is not.
The answer will depend on the size of the cube.
The iron boat is an "empty shell" with air filled space inside, reducing its density compared to the iron cube which is iron all the way through.
Density isn't a property of the size of the material. rather, it's a property of the matter itself. In other words, it doesn't matter if you have 1 billion microscopic cubes of iron or a 40,000 ton cube of iron... It's all iron, so it all has the same density.
The volume of a cube of iron that is 2.50 cm on each side is: 15.63 cm3
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That depends on the density of the material in the cube. It would be different if, say, the cube were made of ice, iron, or gold.
Fine iron filings
Gray cast iron is around 118 grams per cubic inch.
it weighs about 6 tons
An iron equates to 1/48th of an inch.