Physics, 15.01.2021 01:50 izzyisawesome5232
In a flame test, atomic-level changes in electron energy create macroscopic-level changes in visible light energy. Which statement about flame tests is true?(1 point)
Visible blue light corresponds to relatively small changes in the energy levels of the electrons.
Because the energy levels of the electrons in different metals are usually the same, different metals usually emit the same colors of visible light.
Because the energy levels of the electrons in different metals are usually not the same, different metals usually emit different colors of visible light.
Visible red light corresponds to relatively large changes in the energy levels of the electrons.
Answers: 2
Physics, 22.06.2019 10:30
Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.
Answers: 3
Physics, 22.06.2019 16:00
The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2
Answers: 1
Physics, 22.06.2019 19:00
The law of reflection states that the angle of reflection is equal to the angle of
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Physics, 23.06.2019 09:00
Being able to see a square in the middle of the image despite not having lines to form a square represents the gestalt principle of a. proximity b. similarity c. closure d. continuity
Answers: 1
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