What happens if atoms lose energy during a change of state? A. The atoms are pushed apart by repulsive forces and become less organized.
B. The atoms are pulled together by attractive forces and become less organized.
C. The atoms are pushed apart by repulsive forces and become more organized.
D. The atoms are pulled together by attractive forces and become more organized. What

The answer to that would be D my good sir have a great day or morning ??

Explanation:

c) should be the answer.

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.