b. one-half the original density.
c. two times the original density.
d. one-fourth the original density.
Answer:
a. the same as the original density.
Explanation:
The density of a material depends only on the properties of the material, so if a block of steel is cut in a half, it is still made of the same material (steel), so it still has the same density.
We can verify it by doing some calculations. In fact, the initial density of the block of steel is given by the ratio between its mass (75 g) and its volume (10 cm^3):
When the block is cut in a half, its mass becomes half:
and its volume also becomes half:
So the new density is
So, the density has not changed.
heat is added to it?
The mass of the water is 41.9 g
Explanation:
When an amount of energy Q is supplied to a sample of substance of mass m, the temperature of the substance increases by , according to the equation:
where:
m is the mass of the substance
is the specific heat capacity of the substance
is the change in temperature
In this problem, we have:
Q = 525 J is the amount of heat supplied to the water
is the change in temperature of the water
is the specific heat capacity of the water
Solving for m, we find the mass of the water:
Learn more about specific heat capacity:
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The anwser is c make sure you read the anwser before me.