The frequency of light is 3.88 x 10^22Hz.
What is electromagnetic radiation?
The electromagnetic spectrum is the area where the electromagnetic radiation that we see as light, or visible light, is found. Visible light usually has wavelengths between 400 and 700 nanometers (nm) or frequencies between 750 and 420 terahertz, which are between the longer wavelengths of infrared and ultraviolet (with shorter wavelengths).
E = 1.55 x10^13 J/ mol
E = hv
v = 1.55 x 10^13/1mol x 1mol/6.023 x )/6.626 x
velocity = 3.88x10^22 s-1
since 1 Hz = 1/ s = 1
velocity =3.88x 10^22 Hz
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Answer:
im pretty sure its D) ...
It's hard to tell how the choices are laid out, and they have no labels.
The parallel circuits are the two circuits in your second picture.
One of them is the one with 3 switches, 2 batteries, and 2 light bulbs.
The other one is in the same picture. It's the one where all the circuit components ... the battery and 3 resistors ... are in the 4 vertical lines.
Answer: The correct answer is A.
Explanation:
Matter can absorb or emit the light. It does not matter what is the source of light. It may be the surface of sun or star.
Atmosphere absorbs the part of white light which is emitted from star. It produces a color spectrum marked by the dark lines. These dark lines are absorption lines. These lines show the characteristics of the elements present in the gas.
The spectrum of star gives the information about the chemical composition of its atmosphere.
Therefore, Absorption of light in star's atmosphere is the scientific phenomenon which helps scientists to determine the chemical composition of some star.
