Physics, 28.02.2020 22:28 derisepicowe0fa

Absorbed energy is said to be quantized. This means: a) Energy is absorbed only by valence electrons. b) Energy causes electrons to be ejected from atoms. c) Energy is absorbed in exact amounts that correspond to differences in energy levels. d) The wavelength of energy absorbed and emitted must be the same. e) Electron promotion by UV/Visible radiation is possible.

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 01:50

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Answers: 1

Answer

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

Answer

Physics, 22.06.2019 13:00

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

Answers: 3

Answer

Physics, 22.06.2019 21:10

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness

Answers: 2

Answer

You know the right answer?

Absorbed energy is said to be quantized. This means: a) Energy is absorbed only by valence electrons...

Questions