༒༒Why is plastic not used in home construction?☆☆☆☆☆☆☆☆​

plastic is simply not strong as wood, metal or bricks.

Plastic isn't nearly as durable as wood, metal, or masonry. 

Furthermore, plastic defor permanentlyunder stress creeps and is more

difficult to nail, drill, and screw that 

wood. by combining plastic with other materials to create composite 

constructionmaterials, many of 

these structural.

restrictions can be solved.

☆☆

☆Hope it helps☆

☆Have a great day ☆

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.