Write a detailed report on the history of the metric system in america. be sure to include details on passer government actions, it's controversial nature, and it's current status. some groups oppose it's adoption and use in everyday life. what is the basis of this position?

i'm pretty sure its b i might be wrong though!

може ли да зареждате повече информация, моля

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.