Be sure to answer all parts. Name the unidentified species, and write the transmutation process in shorthand notation for the bombardment of 238U with a particle yielding three neutrons and 239Pu. Unidentified species: (Be sure to include both the mass number and atomic number of the particle in your answer.) Transmutation process: (Omit all atomic numbers for the nuclides.)

cc jyfu65   6r 67r   r576dyfu r6tyuio fghjkl;

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.