Question

Question #667fd

Answer 1

`"Amount of linear expansion of the building :"3.3*10^(-3)m`

Explanation:

`"The increase in the temperature of the steel building causes its"` `"extension. Amount of expansion is directly proportional to;"`

• the length of the building.
• the amount of temperature change.
• the coefficient of linear expansion of the steel.

`"We can write the equation in the following way."`

`Delta l=L_i*lambda*Delta t`

`"Where ;"`

`Delta l:"amount of linear expansion"`
`l_i:"initial length"`
`Delta t:"change of temperature"`
`lambda:"coefficient of linear expansion"`

`Delta l=15*11*10^(-6)*20`
`Delta l=3300*10^(-6)`
`Delta l=3.3*10^(-3)m`