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bulgar [2K]
3 years ago
13

Convert 56,789 mm to km.

Physics
1 answer:
charle [14.2K]3 years ago
5 0

Answer:

0.056789

Explanation:

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A metal block has a density of 5000 kg per cubic meter and a mass of 15,000 kg. What is its volume?
Naily [24]

Taking into account the definition of density, the volume of the metal block is 3 m³.

<h3>What is density</h3>

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density=\frac{mass}{volume}

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

<h3>Volume of the metal block</h3>

In this case, you know that:

  • Density= 5000 \frac{kg}{m^{3} }
  • Mass= 15000 kg
  • Volume= ?

Replacing in the definition of density:

5000 \frac{kg}{m^{3} } =\frac{15000 kg}{volume}

Solving:

volume×5000 \frac{kg}{m^{3} }= 15000 kg

volume= \frac{15000 kg}{5000 \frac{kg}{m^{3} }}

<u><em>volume= 3 m³</em></u>

In summary, the volume of the metal block is 3 m³.

Learn more about density:

brainly.com/question/952755

brainly.com/question/1462554

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4 0
2 years ago
A car manufacturer claims an enginerring breakthrough, since it successfully reduced its interior noise level from 65dB to 55 dB
Stells [14]

Yes, that is truly amazing.

They significantly reduced the noise's intensity by 90%, that might be proper reaction.

<h3>What is noise?</h3>
  • Unwanted sound that is regarded loud, unpleasant, or disruptive to hearing is called noise.
  • Physically speaking, there is no difference between unwanted sound and desired sound because both are vibrations traveling through a medium like air or water.
  • When the brain receives and interprets a sound, a difference occurs.
  • Decibels are used to measure sound (dB).
  • A motorcycle engine operating is roughly 95 dB louder than regular conversation, which is around 60 dB louder than a whisper.
  • Your hearing may begin to be harmed if exposed to noise over 70 dB for an extended period of time.
  • Your ears can suffer instant damage from loud noise above 120 dB.
<h3>What is sound intensity?</h3>
  • The power carried by sound waves per unit area in a direction perpendicular to that region is known as sound intensity or acoustic intensity.
  • The watt per square meter is the SI measure of intensity, which also covers sound intensity.

Learn more about sound here:

brainly.com/question/14595927

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5 0
2 years ago
A compass in a magnetic field will line up __________.
Anastaziya [24]
Line up in a direction parallel to the magnetic field lines<span />
5 0
4 years ago
Which is one-dimensional
Tema [17]

Answer:

B

Explanation:

They are all one-dimensional

6 0
3 years ago
Please help with last equation i don't understand at all!!!
GalinKa [24]
What equation?
please comment on this and type it in
5 0
3 years ago
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