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2 years ago

Differentiate conductors and insulators with the help of suitable examples

Physics

2 answers:

mrs_skeptik [129]2 years ago

7 0

Answer:

conductor: Insulator:

Materials that permit Materials that do not permit

heat and electricity to pass through it electricity or heat to

pass through it

A few examples of a A few examples of an insulator are

paper, wood, and rubber

conductor is silver,

aluminum, and iron

andrew-mc [135]2 years ago

3 0

Answer:

Any material that keeps energy such as electricity, heat, or cold from easily transferring through is an insulator

A conductor is a material which contains movable electric charges.

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How fast must an object move before its length appears to be contracted to one-fourth its proper length? (Give your answer in te

Tresset [83]

Answer:

0.97c

Explanation:

From the relativistic equation for length contraction, we have

$l$ = $l_{0}\sqrt{1 - \beta }$

where

$l$ is the final length of the object

$l_{0}$ is the original length of the object before contraction

β = $v^{2} /c^2$

where v is the speed of the object

c is the speed of light in free space = 3 x 10^8 m/s

The equation can be re-written as

$l$ / $l_{0}$ = $\sqrt{1 - \beta }$

For the length to contract to one-fourth of the proper length, then

$l$ / $l_{0}$ = 1/4

substituting into the equation, we'll have

1/4 = $\sqrt{1 - \beta }$

substituting for β, we'll have

1/4 = $\sqrt{1 - v^2/c^2 }$

squaring both side of the equation, we'll have

1/16 = 1 - $v^2/c^2$

$v^2/c^2$ = 1 - 1/16

$v^2/c^2$ = 15/16

square root both sides of the equation, we have

v/c = 0.968

v = 0.97c

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2 years ago

Which statement best describes the importance of joints in the roadways of Bridges ?

Luden [163]

Answer:

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2 years ago

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calculate the amount of work done when a grocery store stocker uses 120N of force to lift a sack of flour 1.5m onto a shelf

marta [7]

Hello There!

Answer is provided in the image attached.

Have a great day!

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2 years ago

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Answer:

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Explanation:

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2 years ago

In what kind of reaction is a compound formed from two reactants?

Lana71 [14]

Answer:

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Explanation:

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3 years ago