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3 years ago

What is the longest wavelength in the molecule’s fluorescence spectrum?

Physics

2 answers:

Darina [25.2K]3 years ago

6 0

The correct answer should be 689 nm

lisov135 [29]3 years ago

4 0

Radiation emitted can also have the same wavelength as absorbed radiation, the term "resonant fluorescence".

<h2>Further explanation </h2>

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. Fluorescence is a form of luminescence. In some cases, the light emitted has longer waves and less energy than the absorbed radiation. Even so, when electromagnetic radiation is absorbed so much, it can be that one electron absorbs two photons; absorption of these two photons can encourage radiation with a wave that is shorter than the absorbed radiation.

The most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet spectrum, so that the human eye is not visible, and the light emitted is in the visible spectrum.

Fluorescence is widely used, including in the fields of mineralogy, gemology, chemical sensors (fluorescence spectroscopy), fluorescent marking, staining, biological detectors, and of course fluorescent lamps.

Understanding of the effects of radiation fluorescence on matter is getting deeper along with the rapid development of technology, especially in the fields of solids, light, experimental materials, data processing, measurement, and others. If the solid is observed at the smallest size (atomic), in the fluorescence effect there is an area of luminescence of light or heat which can be widely used for the examination or measurement of radiation-absorbing doses. An example of the most recent use of the effect of fluorescence is to reduce exposure to X-ray radiation in health checks. Next will be explained about the theory of the effects of radiation fluorescence, characteristics, and examples of their use in the measurement of radiation absorption dose.

Learn more

resonant fluorescence brainly.com/question/3707544

wavelength brainly.com/question/3669889

Details

Grade: High School

Subject: Physics

Keyword: wavelength, fluorescence, resonant

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2 years ago

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Answer:

${ \boxed{ \bold{ \sf{Acceleration \: ( \: a) = 8 \: m/ {s \: }^{2} }}}}$

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♨ Question :

A car starts from rest and is moving at 60.0 m/s after 7.50 s. What is the car's average acceleration ?

♨ $\underbrace{ \sf{Required \: Answer : }}$

☄ Given :

Initial velocity ( u ) = 0
Final velocity ( v ) = 60.0 m/s
Time ( t ) = 7.50 s

☄ To find :

Acceleration ( a )

✒ We know ,

$\boxed{ \underline{ \bold{ \sf{Acceleration \: ( \: a) = \frac{Final velocity ( v ) - Initial velocity ( u)}{t} }}}}$

Substitute the values and solve for a.

➛ $\sf{a = \frac{60.0 - 0}{7.50}}$

➛ $\sf{a = \frac{60.0}{7.50}}$

➛ $\boxed{ \boxed{ \sf{a = 8 \: m/ {s \: }^{2} }}}$

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✑ Additional Info :

When a certain object comes in motion from rest , in the case , initial velocity ( u ) = 0
When a moving object comes in rest , in the case , final velocity ( v ) = 0
If the object is moving with uniform velocity , in the case , u = v.
If any object is thrown vertically upwards in the case , a = -g
When an object is falling from certain height , in the case , final velocity at maximum height ( v ) = 0.

Hope I helped!

Have a wonderful time ツ

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