Question

All formulas and relations for thermal expansion,.........​

Answer 1

Answer:

∆L = alpha L ∆T

L2 = L1 (1+ALPHA ∆T)

Same 4 volume , superficial instead of L use V & A , respectively .

Gud day

Answer 2

Explanation:

Thermal Expansion Formula

Thermal expansion describes the tendency of an object to change in its area, volume and shape to a shift in temperature through a transfer of heat. Heat is a consistently decreasing function of the average molecular kinetic energy of an object. Heating up a substance increases its kinetic energy.

Since thermal expansion leads to changes in dimension either in length or volume, therefore, there are three types of thermal expansion namely – Linear expansion, Area expansion, and Volume expansion.

1. Linear expansion occurs when there is a change in the length. Linear expansion formula is given as,

∆L/L0= aL ∆T

Where,

L0 = original length,

L = expanded length,

α = length expansion coefficient,

ΔT = temperature difference,

ΔL = change in length.

2. Volume expansion occurs when there is a change in volume due to temperature. Volume expansion formula is given as :

∆V/V0 = av ∆T

Where,

V0 = original volume,

V = expanded volume,

αv = volume expansion coefficient,

ΔT = temperature difference,

ΔV = change in volume after expansion.

3. Area expansion occurs when there is any change in area due to temperature change. Area expansion formula is given as,

∆A/A0 = aA ∆T

Where,

A = original area,

ΔA = change in area,

αA = area expansion coefficient,

ΔT = temperature difference,

A0 = expanded area.