All categories

3 years ago

Convection only occurs in what? a. gases b. fluids c. liquids d. solids

Physics

2 answers:

Butoxors [25]3 years ago

7 0

the answer on edginuity is B- Fluids (i just took the test)

vekshin13 years ago

3 0

Answer:

b. Fluids

Explanation:

Convection is one of the three methods of transfer of heat. Let's define them all:

- Conduction: conduction occurs when two objects (or two substances) are in contact with each other; heat is transferred from the warmer object to the colder object by the collisions between the particles of the warmer object (which have on average greater kinetic energy) and the particles of the colder object (which have on average smaller kinetic energy). This type of heat transfer can occur in solids, liquids and gases.

- Convection: convection occurs when there is a fluid which is heated from a heat source. As the part of the fluid closer to the heat source becomes warmer, it becomes less dense and it expands, rising and being replaced by the part of the fluid which is colder. Then, the mechanism continues, generating a convection current (like a cycle) which transport the heat over the whole fluid. This method of heat transfer occurs in fluids (liquids and gases) only.

- Radiation: radiation occurs when heat is carried by electromagnetic waves (which transport energy, so also heat, through space). Radiation can occur in any medium, and can also occur in vacuum since electromagnetic waves can travel in vacuum as well.

You might be interested in

By what factors does the speed of the elctron exceed that of the proton?

____ [38]

Answer:

» An electron is lighter than a proton.

explanation:

${ = \: \sf{an \: electron \: has \: formula \: \: }}{ \bf{ {}^{0}_{ - 1}e }}$

hence it's mass number is zero

${ = \: \sf{an \: electron \: is \: helium \: particle \: \: }}{ \bf{ {}^{4} _{2}He }}$

hence it's mass number is 4

Therefore, proton is heavier than electron

» An electron has a small charge magnitude than a proton.

Explanation:

An electron has charge of -1 while proton has charge of +2, therefore electron is less deflected by any energetic fields than a proton

8 0

3 years ago

At the local hockey rink, a puck with a mass of 0.12kg is given an initial speed of 5.3m/s. If the coefficient of friction betwe

Salsk061 [2.6K]

Here’s my work to your question. I used Newton’s Second Law and a kinematics equation to arrive at the answer.

5 0

2 years ago

Which best describes two counteracting forces on an object

Natali5045456 [20]

The correct answer is B two children pulling apart a wishbone

Let me know if you have any questions, and have a nice day!

6 0

3 years ago

Read 2 more answers

What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a

Nutka1998 [239]

The acceleration of the ball is 5 m/s^2. This can be calculated using a formula that relates the change in velocity, acceleration, and time. This formula is:

Vf = Vi + at

where:
Vf = final velocity
Vi = initial velocity
a = acceleration
t = time

Substituting the values gives:

30 = 20 + a(2)
a = 5 m/s^2 --> Final Answer

6 0

3 years ago

I will give Brainliest to whoever can answer!!!!

Alexus [3.1K]

Answer:

The nodes and anti nodes would reverse roles.

Explanation:

I believe it has to do with the path differences. If waves are in phase, then the path differences are such that the waves reach the screen with crests superimposing crests and troughs superimposing troughs. This happens when the periods of each wave are equal or the paths themselves differ by a whole number multiple of the wavelength (λ, 2λ, 3λ, ...).

Now make these waves out of phase. Then half of the waves will travel half a wavelength farther than the rest. So the path difference will be 0.5λ, 1.5λ, 2.5λ, ....

4 0

3 years ago