Hi :) what’s the difference between conduction in metals & non-metals ? I know it’s the free electron diffusion thingy but I really don’t understand it at all. anyone able to help? Thank you!

Answers

Answer 1

Answer:

The difference between metal and non-metal in terms of condition is explained below.

Explanation:

In metals, conduction occurs due to the aggregation of vibrations of molecules and free-electron distribution. While in non-metals, the mechanism for conduction is only atomic or molecular vibrations.
Apart from free electrons, there are phonons in metals as well as non-metals. Non-metals hold a confined amount of thermal conductivity only due to Phonons and Lattice vibrations.
Concerning atomic vibration in a solid thing (non-metals mainly), it is easier to know if one receives the fact that atoms are almost floating adjacent to one another depending on the covalent bonds between them.
When a metal is heated the electrons quickly respond to the heat and transfer it to the nearby atom or solid touching it. As non-metals don't possess free electrons, the heat transfer happens due to phonons (the excited state of the lattice structure vibrating uniformly).
In metals, this rarely plays a role as the electrons transfer most of the heat efficiently.

Related Questions

A soccer ball is kicked straight upwards with an initial vertical speed of 8.0 m/s. We can ignore air resistance. How long does it take the ball to have a downwards speed of 4.0 m/s?

Answers

Answer:

The time the ball it takes to have the downward speed 4 m/s is 1.22 sec.

Explanation:

Lets explain the motion of the ball

The ball is kicked straight upwards with an initial vertical speed of 8.0 m/s

Its velocity decreases util it reaches the maximum height

At the maximum height its velocity is equal to zero

Then it fall down to the ground

We can ignore air resistance

Lets find the time it takes the ball to reach the maximum height

The acceleration of gravity is -9.8 m/s²

The initial velocity is 8 m/s upward

The final velocity is zero

So lets use the rule v = u + gt, where v is the final velocity, u is the initial

velocity, g is the acceleration of gravity and t is the time

u = 8 , v = 0 , g = -9.8

Substitute these value in the equation above

0 = 8 - 9.8 t

Add 9.8 t for both sides

9.8 t = 8

Divide both sides by 9.8

t = 40/49 seconds

The ball falls withe initial velocity zero and increases to reach 4 m/s

The velocity 4 m/s is downward

The acceleration of gravity is 9.8 m/s²

By using the same rule

u = 0 , v = 4 , g = 9.8

4 = 0 + 9.8 t

4 = 9.8 t

Divide both sides by 9.8

t = 20/49

The time the ball it takes to have the downward speed 4 m/s is the sum

of the two times above

The time the ball it takes = $(40)/(49)+(20)/(49)=(60)/(49)=1.22$ seconds

The time the ball it takes to have the downward speed 4 m/s is 1.22 sec.

A 4.8-kilogram ball moving at 8 m/sec to the right collides with a 1.4-kilogram ball at rest. After the collision, the 4.8-kilogram ball moves at 4.8 m/sec to the right. What is the velocity of the 1.4-kilogram ball?m/s

Answers

The final velocity of the 1.4 kg ball is 11.0 m/s to the right

Explanation:

We can solve this problem, by using the law of conservation of momentum: in fact, the total momentum of the two balls must be conserved before and after the collision. Therefore, we can write:

$p_i = p_f\nm_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2$

where:

$m_1 = 4.8 kg$ is the mass of the first ball

$u_1 = 8 m/s$ is the initial velocity of the first ball (taking right as positive direction)

$v_1 = 4.8 m/s$ is the final velocity of the first ball

$m_2 = 1.4 kg$ is the mass of the second ball

$u_2 = 0$ is the initial velocity of the second ball (it is at rest)

$v_2$ is the final velocity of the second ball

And solving the equation for v2, we find:

$v_2 = (m_1 u_1-m_1v_1)/(m_2)=((4.8)(8)-(4.8)(4.8))/(1.4)=11.0 m/s$

So, the 1.4 kg ball moves at 11.0 m/s to the right.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

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Glacial episodes are an example of

Answers

they are an example of a positive feedback.

Which of these is the best description for a circuit with an open switch?O A) broken
OB) turned off
OC) badly designed
OD) currently operating

Answers

Answer: no it isnt really but ok

Explanation:

Our friend Peter back at the zoo is using a crane to lift an elephant into an enclosure. The elephant weighs 10,000 N. The crane lifts the elephant 5 meters in 25 seconds. How much power was used to accomplish this task?

Answers

10000 x 5 =50,000
50,000 / 25 = 2000

An isotope of carbon has 6 protons and 8 neutrons.How is this isotope written symbolically?

A. C-2
B. C-6
C. C-8
D. C-14

Answers

The answer is D. C-14.

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