Choose the correct statement regarding energy production in the interior of a star and energy production in a power plant. a. A nuclear power plant uses fusion as an energy source by breaking apart atoms.
b. A star uses fission as an energy source by breaking apart atoms.
c. A nuclear power plant uses fission as an energy source by breaking apart atoms.
d. A nuclear power plant uses fission as an energy source by building larger atoms from smaller atoms.

Asample of a gaseous substance changes into a liquid

Which of the following is a source of heat for magma formation? magma plumes in the continental crust friction due to divergence friction due to subduction magma plumes in the oceanic crust

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.