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1 year ago

a nitrogen laser generates a pulse containing 10.0 mj of energy at a wavelength of 340.0 nm. how many photons are in the pulse?

1 answer:

6 0

A nitrogen laser generates a pulse containing 10.0 mj of energy at a wavelength of 340.0 nm and has 1785 x 10¹⁹ photons in the pulse.

<h3>How many photons are in the pulse?</h3>

Energy of a single photon is

E=hcλ

E=6.626×10⁻³⁴ J s×3×108 m/s /340×10⁻⁹ m

E=6.31×10⁻¹⁹ J

Number of photons in the laser is

n=Total Energy/Energy per photon

n=10⁷×10⁻³J /5.90×10⁻¹⁹J/photon

n= 1785 x 10¹⁹ photons

To learn about photons, refer: brainly.com/question/20912241?referrer=searchResults

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3 years ago

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A quantum well is a region of semiconductor or metal film that confines particles to a small region, resulting in quantized ener

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Answer:

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Now according to Heisenberg uncertainty principle $\Delta v\geq \frac{h}{2\pi m\Delta x}$

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2 years ago

Your lab instructor has asked you to measure a spring constant using a dynamic methodâ€”letting it oscillateâ€”rather than a sta

yuradex [85]

Answer:

k = 6,547 N / m

Explanation:

This laboratory experiment is a simple harmonic motion experiment, where the angular velocity of the oscillation is

w = √ (k / m)

angular velocity and rel period are related

w = 2π / T

substitution

T = 2π √(m / K)

in Experimental measurements give us the following data

m (g) A (cm) t (s) T (s)

100 6.5 7.8 0.78

150 5.5 9.8 0.98

200 6.0 10.9 1.09

250 3.5 12.4 1.24

we look for the period that is the time it takes to give a series of oscillations, the results are in the last column

T = t / 10

To find the spring constant we linearize the equation

T² = (4π²/K) m

therefore we see that if we make a graph of T² against the mass, we obtain a line, whose slope is

m ’= 4π² / k

where m’ is the slope

k = 4π² / m'

the equation of the line of the attached graph is

T² = 0.00603 m + 0.0183

therefore the slope

m ’= 0.00603 s²/g

we calculate

k = 4 π² / 0.00603

k = 6547 g / s²

we reduce the mass to the SI system

k = 6547 g / s² (1kg / 1000 g)

k = 6,547 kg / s² =

k = 6,547 N / m

let's reduce the uniqueness

[N / m] = [(kg m / s²) m] = [kg / s²]

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2 years ago