Mass per Meter Run in Kg
You first need to find out what the pieces are. 12 mm is a measure of length. Length, by itself cannot be converted to an equivalent mass.
Using a scale, the box of bricks, and the object, keep putting bricks or pieces of bricks until the scales balance. Find out how many bricks you put and multiply by the mass of one brick and you got the mass of the object.
Pieces of candy is plural; how many pieces are in a jar.
Its mass remains the same (except for the very small amounts that stick to the knife blade).
That depends what the pieces are made of!
Mass is the amt. of matter in a space. The mass of all of the pieces together stays the same, while the mass of individual pieces that have been cut lessens.
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Mass per Meter Run in Kg
As long as you don't lose any pieces or add any pieces then yes, they do.
You first need to find out what the pieces are. 12 mm is a measure of length. Length, by itself cannot be converted to an equivalent mass.
The total mass remain unchanged but each piece has its mass.
yes
mass of chocolate bar / pieces of chocolate in a bar
An example of conservation of mass is simply cutting up a cookie into pieces. Even though you now have more pieces, it still has the same amount of mass (how much matter is made of the cookie) as you did when it was all in one piece. :)
Assuming both pieces are traveling at 6m/s, the 4kg mass has a kinetic energy of 72 joules.
The total mass remain unchanged.