It does not hurt when an empty hangs lightly against a wall because the wall applies an
equal and opposite reaction force on you. In this case, Newton's third law is applicable.
Our hand hurts, when we are carrying a heavy load. This is because; the downward force acts or
our hand. This downward force depends on the weight of load. In this case, Newton's second law
is applicable.
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Mass
Explanation:
They physical property that is not the same among the four objects is their masses.
Mass is the amount of matter contained in a substance.
- Specific heat is the amount of energy needed to raise the temperature of 1g of a substance by 1k.
- Since the materials are made of the same metal, they have the same specific heat.
- They will also have the same magnetism and electrical conductivity.
- These properties are intensive property and do not depend on the amount of matter present.
- Mass is an extensive property that depends on the amount of matter present.
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Weight is a force caused by gravity. The weight of an object is the gravitational force between the object and Earth.
