Question

A metal bar measures 60 cm at 10 degree celcius. What would be its length at 110 degrees celcius if coefficient of linear expansion is 1.5/100000

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Answer 1

Answer:

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Step-by-step explanation:

Example – 03: A metal bar measures 60 cm at 10 oC. What would be its length at 110 oC, α = 1.5 x 10-5 /oC. Given: Initial temperature = t1 = 10 oC, final temperature = t2 = 110 oC, initial length = l1 = 60 cm, coefficient of linear expansion = α = 1.5 x 10-5 /oC.

Answer 2

A metal bar measures 30 cm at 0⁰C and 50.048 cm at 80⁰C. Find the coefficient of linear expansion of the metal.

Answer:

$\alpha =0.048^0 c$

Given :

A metal bar measures =30com

At 0 degrees c

A metal bar measures =50.48 cm

At 80 degree c

Step-by-step explanation:

The ratio of the increasing of the length, area, or volume of a body per degree rise in temperature to its length, area, or volume, etc.... at some certain temperature, generally 0° C, the pressure being kept constant. called also expansivity.

Elongation by linear expansion of metals is given by

ΔT=L₀$\alpha$ΔT

Where L₀ is the length at degrees c

$\alpha$ = coefficient of expansion

= (50.048-30)=30$\alpha$ x 80

=20.048=240$\alpha$

$\alpha =\frac{20.048}{240}$

$\alpha =0.048^0 c$

To know more about coefficient of linear expansion refer :

https://brainly.com/question/14780533

https://brainly.com/question/27955197

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