Which statement best describes the expression fraction 1 over 2 x (14 − 6) x 6 + 4? (2 points) a Find half the product of 6 and 4, then subtract the difference between 14 and 6. b Find half the difference of 14 and 6, multiply by 6, then add 4. c Find the product of 14 and 6, add the product of 6 and 4, then divide by 2. d Find the product of 6 and 4, subtract the difference between 14 and 6, then multiply by fraction 1 over 2.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

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.