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Snezhnost [94]
3 years ago
14

Why is density used to determine the identity of matter?

Physics
1 answer:
dedylja [7]3 years ago
4 0
 a substance's density is the same at a certain pressure and temperature, and the density of one substance is usually different than another substance.
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tia_tia [17]

Answer:

A measurement standard is a quantity that people agree to use as a comparison. Standards are important because they allow measurements to be compared even if different people in different parts of the world take them.

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6 0
2 years ago
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If a liquid has a density of 1.67 g/cm^3, what is the volume of 45g of the liquid?
Aloiza [94]

Answer:

V = 26.95 cm³

Explanation:

Density is given by the formula :

ρ = m÷V

Density = mass ÷ Volume

Given both density and mass we rearrange, substitute and solve for Volume :

Rearranging the equation to make Volume the subject :

ρ = m÷V

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Now substitute :

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V = 26.9461077844

Take 2 decimal places as the density is 2 decimal places :

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Units will be cm³ as it is volume

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8 0
2 years ago
Which statements define factors that contribute to the decline of Roman Empire
USPshnik [31]
The Huns' invasion of Europe caused a mass migration driving Germanic tribes of Northern Europe to the borders of the Roman Empire which led to the Barbarian attacks on Rome. 
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3 years ago
A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and frequency of 875
mario62 [17]

Using

V = Amplitude x angular frequency(omega)

But omega= 2πf

= 2πx875

=5498.5rad/s

So v= 1.25mm x 5498.5

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B. .Acceleration is omega² x radius= 104ms²

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