Water is known as the "universal solvent." What is the best synonym for "solvent?" A. A substance that dissolves other substances

B. A substance that's found almost everywhere on earth

C. A substance that exists as a liquid at room temperature

D. A substance that is necessary for life

can you attach the

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.