Arrow tanker carry a strong acid was involved in an accident and its contents field on the road at the side of the road iron drain covers began melting and freezing as the acid ran over them specialist was called to see if the acid actually leaked into the nearby river the word melting is incorrectly used in the report suggest a better name that should have been used

dissolving

Explanation:

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.