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natima [27]
3 years ago
12

(a) Calculate the wavelength of light in vacuum that has a frequency of 5.25 x 1018 Hz. nm (b) What is its wavelength in diamond

? nm (c) Calculate the energy of one photon of such light in vacuum. Express the answer in electron volts. eV (d) Does the energy of the photon change when it enters the diamond? O The energy of the photon does not change. The energy of the photon changes
Physics
1 answer:
leva [86]3 years ago
8 0

Answer:

Explanation:

wavelength = velocity / frequency

= 3 x 10⁸ /5.25 x 10¹⁸

= .5714 x 10⁻¹⁰

= .05714 x 10⁻⁹

= .05714 nm .

b ) wave length in diamond

= wavelength in air / refractive index of diamond

= .05714 nm / 2.4

= .0238 nm .

c )

energy of one photon = hν where h is plank's constant and ν is frequency

= 6.6 x 10⁻³⁴ x 5.25 x 10¹⁸

= 34.65 x 10⁻¹⁶ J

= 34.65 x 10⁻¹⁶  / 1.6 X 10⁻¹⁹ eV

= 21.65 X 10³ eV .

d )

Energy does not change because its frequency does not change .

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explain which properties of metals make sterling silver the best material for you to create hammered earrings.
7nadin3 [17]

It is malleable

Explanation:

The property that makes metals such as sterling silver the best to create hammered earrings is their malleability.

All metals have a unique and fascinating property of being malleable. They can be carved into any of shape. When hammered they simply draw out and retain their long range ordering of their crystal lattice.

This is made possible by the presence of metallic bonding between the atoms.

  • The bulk of the physical properties of metals can be attributed the metallic bonds in them.
  • Metals have large sea of electrons in them.
  • In forming metallic bonds, there is an attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all the atoms by loosing their outermost shell electrons.
  • Metals like silver have low ionization energy.
  • When they are hammered, they spread out the energy from the hammering.

learn more:

Metals brainly.com/question/2474874

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8 0
3 years ago
Which of the following is one way of preventing poisoning?
Iteru [2.4K]
I think its number 1

7 0
3 years ago
Consider a series RLC circuit where R = 855 Ω and C = 6.25 μF. However, the inductance L of the inductor is unknown. To find its
sashaice [31]

Answer:

L= 0.059 mH

Explanation:

Given that

R = 855 Ω and C = 6.25 μF

V= 84 V

Frequency

ω = 51900 1/s

We know that

\omega=\sqrt{\dfrac{1}{LC}}

L=Inductance

C=Capacitance

ω =angular Frequency

ω² L C =1

(51900)² x L x 6.25 x 10⁻⁶ = 1

L= 5.99 x 10⁻⁵ H

L= 0.059 mH

6 0
3 years ago
A block of mass
Gennadij [26K]

(a) The work done by the applied force is 26.65 J.

(b) The work done by the normal force exerted by the table is 0.

(c) The work done by the force of gravity is 0.

(d) The work done by the net force on the block is 26.65 J.

<h3>Work done by the applied force</h3>

W = Fdcosθ

W = 14 x 2.1 x cos25

W = 26.65 J

<h3>Work done by the normal force</h3>

W = Fₙd

W = mg cosθ x d

W = (2.5 x 9.8) x cos(90) x 2.1

W = 0 J

<h3>Work done force of gravity</h3>

The work done by force of gravity is also zero, since the weight is at 90⁰ to the displacement.

<h3> Work done by the net force on the block</h3>

∑W = 0 + 26.65 J = 26.65 J

Thus, the work done by the applied force is 26.65 J.

The work done by the normal force exerted by the table is 0.

The work done by the force of gravity is 0.

The work done by the net force on the block is 26.65 J.

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6 0
2 years ago
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