How important do you think it is it to explore our solar system? write in complete 5 sentence

It is very important because we know more about the stars and planets then our own ocean. We need to know what we live on before we start looking for other places. The space can wait the World we live on is mor important. (restate other sentances)

he would use the colour black

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.