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3 years ago

How are physical descriptions and physical properties similar

Physics

2 answers:

elena55 [62]3 years ago

5 0

They are both used to observe and describe matter.

Sophie [7]3 years ago

5 0

Answer:

Physical properties:

The physical properties are the measured set or collection of information regarding any particle compound or element, with out making changes in that compound composition or chemical properties.

As, the physical properties include the color,texture,solubility, polarity, and the characteristics or features related to physical properties of that compound.

Physical description:

The physical description is the basic way or expressive properties or details which are observed and represent a specific class of compounds, elements or beings in simple words.

For example:

The shape of compounds, the phenotype in living beings etc.

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One charge is decreased to one-third of its original value, and a second charge is decreased to one-half of its original value.

Elanso [62]

I just had this question on my test, the answer is C.

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3 years ago

Read 2 more answers

Which is the absolute location of St. Louis, Missouri?

devlian [24]

Answer:

The first is the closest in absolute values.

The second two are vague and the last is approximate.

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3 years ago

The uncertainty in the position of an electron along an x axis is given as 5 x 10-12 m. What is the least uncertainty in any sim

Vsevolod [243]

Answer:

The least uncertainty in the momentum component px is 1 × 10⁻²³ kg.m.s⁻¹.

Explanation:

According to Heisenberg's uncertainty principle, the uncertainty in the position of an electron (σx) and the uncertainty in its linear momentum (σpx) are complementary variables and are related through the following expression.

σx . σpx ≥ h/4π

where,

h is the Planck´s constant

If σx = 5 × 10⁻¹²m,

5 × 10⁻¹²m . σpx ≥ 6.63 × 10⁻³⁴ kg.m².s⁻¹/4π

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4 0

3 years ago

One of the most efficient engines built so far has the following characteristics: combustion chamber temperature = 1900°C, exhau

suter [353]

Answer:

actual efficiency is 47.78 %

Carnot efficiency is 67.65 %

power output is 5.20 × 10^3 hp

Explanation:

given data

temperature = 1900°C = 1900+ 273 K = 2173 K

exhaust temperature = 430°C = 430 + 273 K = 703 K

fuel = 7.0 × 10^9 cal

work = 1.4 × 10^10 J

to find out

actual efficiency and Carnot efficiency and power output of engine

solution

first we find actual efficiency that is = work / heat input

put the value and

input energy = 7.0 × 10^9 cal (4.184 J/1 cal) = 29.29 × 10^9 J

actual efficiency = 1.4 × 10^10 / ( 29.29 × 10^9 )

actual efficiency = 0.4778

actual efficiency is 47.78 %

and

Carnot efficiency is = 1 - ( 703 / 2173 )

so Carnot efficiency is = 0.67648

Carnot efficiency is 67.65 %

and

power output = work / time

power output = 1.4 × 10^10 / 3600 sec

power output = 3.88 × 10^6 W

power output = 3.88 × 10^6 W / 746 hp

so power output is 5.20 × 10^3 hp

5 0

3 years ago

The physical model of the sunâ€™s interior has been confirmed by observations of

Inga [223]

The physical model of the sun's interior has been confirmed by observations of neutrino and seismic vibrations.

Explanation:

Sun's interior is composed of very high temperature and solar flares. So it is very difficult to understand the interior of the sun. But by using the vibrations of neutrino and seismic waves emitted by the solar waves, the physical model can be assumed.

As the interior of the sun performs continuous chain of hydrogen cycle. So the continuous emission of energy from the chain reaction releases neutrino. So these vibrations in neutrino and seismic vibrations, the physical model can be assumed easily.

6 0

3 years ago