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3 years ago

13

Complete the formula. density = _____ weight/volume weight/length mass/length mass/volume

2 answers:

viva [34]3 years ago

6 0

Answer: Option (d) is the correct answer.

Explanation:

Density is defined as mass per unit volume.

Mathematically, $d = \frac{m}{v}$

where d = density

m = mass

v = volume

Density is also known as degree of compactness, that is, more closely the atoms are linked more will be the mass of object or atom. Hence, more will be its density.

Thus, we can conclude that $density = \frac{mass}{volume}$

faltersainse [42]3 years ago

4 0

Mass/volume cause you divide to get density

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2 years ago

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Serhud [2]

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Explanation:

Hello there!

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2 years ago

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12345 [234]

1) 385 J

2) 450 J

Explanation:

1)

The amount of energy that must be absorbed by a certain substance in order to increase its temperature by $\Delta T$ is given by the equation:

$Q=mC\Delta T$

where

m is the mass of the substance

C is its specific heat capacity

$\Delta T$ is the increase in temperature of the substance

For the block of copper in this problem, we have:

m = 10 g is the mass

$C=0.385 J/gK$ is the specific heat capacity of copper

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2)

Similarly for the block of iron, the energy absorbed by the iron is given by

$Q=mC\Delta T$

where

m is the mass of the block of iron

C is its specific heat capacity of iron

$\Delta T$ is the increase in temperature of the block

Here we have:

m = 10 g is the mass of the block

$C=0.450 J/gK$ is the specific heat capacity of iron

$\Delta T=400-300 = 100 K$ is the change in temperature

So, the energy absorbed by the block of iron is

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