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AlladinOne [14]
2 years ago
15

Does anyone know this or done it? It’s for life skills and about MyPlate:)

Physics
1 answer:
vivado [14]2 years ago
6 0
The answer is no I’ve not done that
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‏Explain how an electron emitted by the photoelectric effect can have kinetic energy less than threshold energy ?
xenn [34]

Answer:

the photons (quanta of light) collide with the electrons, these electrons have to overcome the threshold energy that is the energy of union with the metal, and the energy that remains is converted to kinetic energy.

          K = E - Ф

Explanation:

The photoelectric effect is the emission of electrons from the surface of a metal.

This was correctly explained by Einstein, in his explanation the energy of the photons (quanta of light) collide with the electrons, these electrons have to overcome the threshold energy that is the energy of union with the metal, and the energy that remains is converted to kinetic energy.

          E = hf

          E = K + Ф

          K = E - Ф

The energy of the photons is given by the Planck relation E = hf and according to Einstein the number of joints must be added

            E = n hf

Therefore, depending on the value of this energy, the emitted electrons can have energy from zero onwards.

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3 years ago
English or metric <br> What is 16in to cm
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40.64 cm is the answer to your question.
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Most ocean waves obtain their energy and motion from _____.
OLga [1]
Centrifugal force of the earth's rotation as well as tidal forces caused by the moon's orbit and the sun's gravitational pull.
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The diagram shows a spectrometer being used to analyze a sample of a solution.
fredd [130]

Answer

B. X

A plate of glass or metal ruled with very close parallel lines, producing a spectrum by diffraction and interference of light.

diffraction grating is an optical component that splits and diffracts light into several beams travelling in different directions. The light emerges with its colours separated.

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A point from which the position of other objects can be described is called what?
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Answer:

Reference Point

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