1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pentagon [3]
3 years ago
5

A thermos bottle has two layers, a glass layer and a vacuum layer.

Physics
1 answer:
SIZIF [17.4K]3 years ago
4 0

The vacuum layer is the better thermal insulator

Explanation:

Depending on how they conduct heat, materials can be classified into two types:

  • Thermal conductos: these are materials that are able to transfer heat efficiently. Examples of thermal conductors are metals in general: in fact, when you heat one side of a metal bar, the other end becomes hot very fast; this means that the heat has been transferred very quickly across the metal rod
  • Thermal insulators: these are materials that do not transfer heat well. In general, gases or rarefied substances are better insulators, because the particles are more spread apart, and therefore the heat (which is transferred by conduction through collisions between molecules) is transferred less efficiently, due to the large distance between the particles.

In this sense, vacuum is the best possible insulator. This is because vacuum contains no particles at all, so there cannot be transfer of heat by conduction (because there cannot be collisions between molecules), and therefore, vacuum is the best thermal insulator.

Learn more about heat:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

You might be interested in
HEY CAN ANYONE PLS ANSWER DIS!!!!!!!!!!!!
Salsk061 [2.6K]

Answer:

a is falsa

Explanation:

8 0
3 years ago
What real-world examples show no work being done? Can you think of examples other than resisting the force of gravity?
GalinKa [24]

-- pushing on a brick wall

-- standing on your little brother's back so that he can't get up

-- taking a nap while on the job

-- squeezing anything that doesn't yield to your squeeze, such as a glass bottle or your girl friend

-- watching TV

-- solving math problems in your head

-- making pictures out of clouds in the sky

8 0
3 years ago
Why is radiation fog more likely near the center of an anticyclone than near the center of a cyclone?
Zigmanuir [339]
Radiation fog is the fog that is formed when the heat absorbed the Earth's surface is released into the atmosphere producing fog. This only occurs when the air is clear and calm. In the center of an anticyclone, the conditions of the air are clear and calm which is favorable for the formation of radiation fog. The center of cyclones, on the other hand, is turbulent and cloudy which prevents the formation of radiation fogs.
4 0
3 years ago
the length of time it takes a planet to revolve around the sun is equivalent to witch of the following?
Marina86 [1]
It really depends on how far or close the planet is from the sun

6 0
3 years ago
Read 2 more answers
Find the pressure if a force of 2N is applied to an area of 0.00004m^2
BigorU [14]

Answer:

5 x 10^4 N/m^2

Explanation:

Pressure, force and area are related witg the following equation;

Pressure = Force /Area

From the question, we obtained the following information;

Force = 2N

Area = 0.00004m^2

Pressure =?

Pressure = Force /Area

Pressure = 2/0.00004

Pressure = 5 x 10^4N/m^2

3 0
3 years ago
Other questions:
  • Which of newtons laws is illustrated by a squid moving forward by shooting water out behind it? Why?
    15·1 answer
  • All isotopes of a particular element have the same atomic number. How then do the isotopes of a particular element differ?
    7·1 answer
  • When do net force is applied to a moving object it still comes to rest because of its inertia
    13·1 answer
  • The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hou
    9·1 answer
  • All electric circuits have devices that are run by _____ energy.
    14·1 answer
  • A black squirrel is sitting on the ground. A red squirrel is sitting on a tree branch high above the black squirrel. Both squirr
    5·2 answers
  • Hold a pencil in front of your eye at a position where its blunt end just blocks out the Moon. Make appropriate measurements to
    9·1 answer
  • Suppose that two objects attract each other with a gravitational force of 16 units. If the mass of both objects was doubled, and
    10·1 answer
  • Due today HELP HELP HELP
    7·1 answer
  • Question 1 of 7What is the change in internal energy if 90 J of thermal energy is added to asystem, and the system does 30 J of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!