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Allushta [10]
3 years ago
13

Why can gases and liquids both transmit heat by convection?

Physics
2 answers:
defon3 years ago
6 0

Answer:

A. Their particles are free to move away from each other.

Explanation:

DochEvi [55]3 years ago
4 0

Answer:

Gases and liquids both transmit heat by convection because <u><em>their particles are free to move away from each other (option A).</em></u>

Explanation:

Convection is a process in which heat is transferred between two liquid substances, between two gaseous substances or a gas and a liquid when they are at different temperatures. The heat flux is produced from the body with the highest temperature to the substance with the lowest temperature.

The transmission of heat by convection is based on the actual movement of the molecules of a substance. Both liquids and gases are considered fluids where their particles are free to move away and move from each other. In solids particles vibrate around fixed positions and have a fixed volume .

<u><em>Gases and liquids both transmit heat by convection because their particles are free to move away from each other (option A).</em></u>

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What material or device prevents the conducting of electricity?
PtichkaEL [24]

Answer:

Explanation:

An insulator. You can see ceramic insulators on telephone poles and power poles if you look carefully. If you live in a city, somewhere in that city is a power station. The insulators are huge. They have to be. The currents are very large in many cases.

4 0
3 years ago
The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.2 × 10-15 m. The single electron in a hydrogen
Nutka1998 [239]

Answer: 0.86 × 10^14

Explanation:

Given the following :

Radius of proton = 1.2 × 10-15 m

Radius of hydrogen atom = 5.3 × 10-11 m

Density of proton could be calculated thus:

Mass of proton = 1.67 × 10^-27 kg

Using the formula :

(4/3) × pi × r^3

(4/3) × 3.142 × (1.2 × 10^-15)^3 = 7.24 × 10^-45

Density = mass / volume

Density = (1.67 × 10^-27) / ( 7.24 × 10^-45)

= 0.2306 × 10^18

Density of hydrogen atom:

Mass of hydrogen atom= 1.67 × 10^-27 kg

Using the formula :

(4/3) × pi × r^3

(4/3) × 3.142 × (5.3 × 10^-11)^3 = 6.24 × 10^-31

Density = mass / volume

Density = (1.67 × 10^-27) / ( 6.24 × 10^-31)

= 0.2676 × 10^4

Ratio is thus:

Density of proton / density of hydrogen atom

0.2306 × 10^18 / 0.2676 × 10^4 = 0.8617 × 10^14

6 0
3 years ago
Sort the units based on the measurement system they're used in
timurjin [86]

Answer:

Kelvin

Explanation:

fact as per the guideline given

7 0
3 years ago
You position two plane mirriors at right angles to each other a light ray strikes one mirrior at an angle of 60 to the normal an
Dafna1 [17]

Answer:

30 degrees

Explanation:

Reflects off of mirror 1  at   60 degrees....this makes it incident to second mirror at 30 degrees ....then angle of reflection equals this angle of incidence = 30 degrees

See atached diagram

4 0
2 years ago
Give two examples of pure substances and two examples of mixtures​
nikdorinn [45]

Answer:

1 kerosene is the pure substance, salt and water is the mixture substance

7 0
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Read 2 more answers
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