Two capacitors give an equivalent capacitance of 9.42 pf when connected in parallel and an equivalent capacitance of 1.68 pf when connected in series. what is the capacitance of each capacitor?

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.

How does an observation about an object differ from an inference about that object

Which best describes the difference between internal and thermal energy?