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Readme [11.4K]
3 years ago
10

The desinty of a metal is 8.9g/cm3.what does it mean? what is the importance of this value?

Physics
2 answers:
prohojiy [21]3 years ago
6 0

Answer:

it means that the mass of 1 cm^3 of the metal is 8.9 grams.

The density is used to approximate how heavy and object is going to be. The mass of an object with known density and volume can be calculated using;

Mass = density × volume

Density is used to determine whether an object would float or sink in water of other substances.

Density is also considered in the selection of materials for construction, fabrications and manufacturing of products

Explanation:

Density is the measure of compactness of a substance. It is simply the mass of a unit volume of a substance.

Density = mass/volume

If the desinty of a metal is 8.9g/cm^3, it means that the mass of 1 cm^3 of the metal is 8.9 grams.

That means that the mass of a unit volume (1cm^3) of the metal is 8.9 g.

The density is used to approximate how heavy and object is going to be. The mass of an object with known density and volume can be calculated using;

Mass = density × volume

Density is used to determine whether an object would float or sink in water of other substances.

Density is also considered in the selection of materials for construction, fabrications and manufacturing of products

Komok [63]3 years ago
5 0

Answer:

It means that in every cubic centimeter volume of the metal, there is 8.9 grams mass of the metal.

Explanation:

It means that the degree of compaction of the atoms of the metal is 8.9 g/cm3.

It also means that in every cubic centimeter volume of the metal, there is 8.9 grams mass of the metal.

This information (density) will help us to understand how dense the the metal is, whether it will float or sink when immersed in a certain fluid.

Example, this metal will sink when it is immersed in water, because density of water is 1g/cm3, which is less than the density of the metal.

Also, this metal will float when immersed in a fluid like heavy crude oil, whose density is great than 8.9g/cm3.

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8 0
3 years ago
What is the resulting direction of a surface wave?​
german

surface wave is a wave that travels along the surface of a medium. The medium is the matter through which the wave travels. Ocean waves are the best-known examples of surface waves. They travel on the surface of the water between the ocean and the air.

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3 years ago
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Which statement about the image Formed by a plane mirror is correct?
lbvjy [14]

Answer:

The image is virtual

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8 0
3 years ago
Find electric field at point p which is a distance l away from the both +q and -q
denis-greek [22]

Answer:

\frac{1}{4\times(pie)\times\text{E}} \times\frac{q}{I^{2} }+\frac{1}{4\times(pie)\times\text{E}} \times\frac{-q}{I^{2} }

Explanation:

As given point p is equidistant from both the charges

It must be in the middle of both the charges

Assuming all 3 points lie on the same line

Electric Field due a charge q at a point ,distance r away

=\frac{1}{4\times(pie)\times\text{E}} \times\frac{q}{r^{2} }

Where

  • q is the charge
  • r is the distance
  • E is the permittivity of medium

Let electric field due to charge q be F1 and -q be F2

I is the distance of P from q and also from charge -q

⇒

F1=\frac{1}{4\times(pie)\times\text{E}} \times\frac{q}{I^{2} }

F2=\frac{1}{4\times(pie)\times\text{E}} \times\frac{-q}{I^{2} }

⇒

F1+F2=\frac{1}{4\times(pie)\times\text{E}} \times\frac{q}{I^{2} }+\frac{1}{4\times(pie)\times\text{E}} \times\frac{-q}{I^{2} }

8 0
3 years ago
How many significant figures should be written in the sum 4.65g +9.032g+580.0078+540.439g?
Ne4ueva [31]

Answer: 1.13 X 10^3 g or 1130 g

Explanation: When you add up everything, you will get 1134.1288 g = 1.11341218 X 10^3. But while adding significant figures, we always look for the least significant figures (here 4.65 has least sig. figures  i.e. 3) and take that as a reference to how many significant figures we should have in the answer. (Pretty hard to explain!) Hope you got it!!

7 0
2 years ago
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