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3 years ago

Explain why gases make better thermal insulators than solids or liquids.

Physics

2 answers:

Fantom [35]3 years ago

7 0

Answer:

Solids conduct heat better than liquids, which are in turn better conductors than gases. ... Thus liquids are usually poor conductors of heat. In a gas, the particles are far apart, making energy transfer by collision very inefficient. Thus gases, like air, are very poor conductors of heat.

daser333 [38]3 years ago

7 0

Gases make better thermal insulators and is due to the more inter molecular distance, and the weak forces among particles of gases.

<u>Explanation:</u>

The speed of heat transfer by conduction is varies for different materials. If the materials is less dense they are better insulators and if the material is more dense its insulating property is very less.

An insulator is a material that is poor conductor of heat. In gases the inter molecular forces of attraction is weakest. The particles are very apart from each other.

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A drawback of burning biomass to produce electricity is that it is ___.

attashe74 [19]

Answer: Unsustainable wood harvesting can lead to deforestation, soil erosion, and desertification.

Explanation: you welcome

4 0

3 years ago

In a physics laboratory experiment, a coil with 200 turns enclosing an area of 13.1 cm2 is rotated during the time interval 3.10

sergij07 [2.7K]

Answer:

A) $\Phi=83.84\times 10^{-9}$

B) $\Phi=0 Wb$

C) $emf=5.4090\times 10^{-4}V$

Explanation:

Given that:

no. of turns i the coil, $n=200$

area of the coil, $a=13.1 \times 10^{-4}\,m^2$

time interval of rotation, $t=3.1\times 10^{-2}\,s$

intensity of magnetic field, $B=6.4\times 10^{-5}\,T$

(A)

Initially the coil area is perpendicular to the magnetic field.

So, magnetic flux is given as:

$\Phi=B.a\,cos \theta$ ..................................(1)

$\theta$ is the angle between the area vector and the magnetic field lines. Area vector is always perpendicular to the area given. In this case area vector is parallel to the magnetic field.

$\Phi=6.4\times 10^{-5}\times 13.1 \times 10^{-4}\, cos 0^{\circ}$

$\Phi=83.84\times 10^{-9} Wb$

(B)

In this case the plane area is parallel to the magnetic field i.e. the area vector is perpendicular to the magnetic field.

∴ $\theta=90^{\circ}$

From eq. (1)

$\Phi=6.4\times 10^{-5}\times 13.1 \times 10^{-4}\, cos 90^{\circ}$

$\Phi=0 Wb$

(C)

According to the Faraday's Law we have:

$emf=n\frac{B.a}{t}$

$emf=\frac{200\times 6.4\times 10^{-5}\times 13.1 \times 10^{-4}}{3.1\times 10^{-2}}$

$emf=5.4090\times 10^{-4}V$

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3 years ago

How would it be possible for an object to be traveling with a constant speed and still accelerating?

lys-0071 [83]

Yeah!! It's possible for an object by changing it's direction....

4 0

3 years ago

1 point

klio [65]

Answer:

100 g

100

200

300

400

500

108

Explanation:

ikkk

8 0

3 years ago

A rigid tank internal energy of fluid 800kJ. Fluid loses 500kJ of heat and padle wheel does 100kJ of work. Find final internal e

Nesterboy [21]

Answer:

U₂ = 400 KJ

Explanation:

Given that

Initial energy of the tank ,U₁= 800 KJ

Heat loses by fluid ,Q= - 500 KJ

Work done on the fluid ,W= - 100 KJ

Sign -

1.Heat rejected by system - negative

2.Heat gain by system - Positive

3.Work done by system = Positive

4.Work done on the system-Negative

Lets take final internal energy =U₂

We know that

Q= U₂ - U₁ + W

-500 = U₂ - 800 - 100

U₂ = -500 +900 KJ

U₂ = 400 KJ

Therefore the final internal energy = 400 KJ

6 0

3 years ago

Explain why gases make better thermal insulators than solids or liquids.​

Explain why gases make better thermal insulators than solids or liquids.