Chemistry, 25.12.2019 03:31 sairaanwar67

Green light has a frequency of about 6.00×1014s−1. what is the energy of a photon of green light?

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Answer from: tcarston1728

3.98 x 10⁻¹⁹ Joule

Further explanation

Given:

The green light has a frequency of about 6.00 x 10¹⁴ s⁻¹.

Question:

The energy of a photon of green light (in joules).

The Process:

The energy of a photon is given by $\boxed{\boxed{ \ E = hf \ }}$

E = energy in joulesh = Planck's constant 6.63 x 10⁻³⁴ Jsf = frequency of light in Hz (sometimes the symbol f is written as v)

Let us find out the energy of the green light emitted per photon.

$\boxed{ \ E = (6.63 \times 10^{-34})(6.00 \times 10^{14}) \ }$

Thus, we get a result of $\boxed{\boxed{ \ E = 3.98 \times 10^{-19} \ J \ }}$

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Notes

When an electron moves between energy levels it must emit or absorb energy. The energy emitted or absorbed corresponds to the difference between the two allowed energy states, i.e., as packets of light called photons. A higher energy photon corresponds to a higher frequency (shorter wavelength) of light.Learn moreThe energy of the orange light emitted per photon linkDetermine the density of our sun at the end of its lifetime link Find out the kinetic energy of the emitted electrons when metal is exposed to UV rays link

Keywords: green light, frequency, the energy, a photon, Planck's constant, electrons, emitted, wavelength, joules

Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

Answer from: Quest

the link still does not work even when adding it to the url bar

explanation:

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