O temperature change
Answers: 2
Another question on Physics
Physics, 22.06.2019 10:50
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.
Answers: 3
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 Γ 1013 rad/s. the mass of a nickel atom is 9.75 Γ 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 Γ 10-34 j β’ s, , 1 ev = 1.60 Γ 10-19 j)
Answers: 2
Physics, 22.06.2019 15:00
Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current
Answers: 1
You know the right answer?
Which of the following indicates a heat transfer?
O low temperature
O temperature change
O temperature change
Questions
Mathematics, 18.04.2020 05:15
Mathematics, 18.04.2020 05:15
English, 18.04.2020 05:16
Mathematics, 18.04.2020 05:16
Biology, 18.04.2020 05:16
Mathematics, 18.04.2020 05:16
Health, 18.04.2020 05:16
Mathematics, 18.04.2020 05:16
