Explain whether or not the following two-particle states (aメb) are allowed. simple ys/no answers are not sufficient. a) la, b) for a gluon-gluon pair b) la, b) for an electron-proton pair e) la, b) for an electron-electron pair d) 1/v2(a, b) + b, a)) for a muon-muon pair e) a. a) for a higgs-higgs pair

The necleus of an atom is made up of what subatomic particles?

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.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?