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LekaFEV [45]
3 years ago
10

The diagram shows changing wavelengths along the electromagnetic spectrum. Which labels belong in the areas marked Y and Z? Y: U

ltraviolet Z: Radio Y: Gamma rays Z: Visible light Y: X-rays Z: Infrared Y: Radio Z: Gamma rays

Physics
1 answer:
marshall27 [118]3 years ago
8 0
Y: Radio 
Z: Gamma
because gamma has a higher frequency then radio, therefore the higher the frequency the shorter the wavelength

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What types of electromagnetic radiation does the sun emit?
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https://gml.noaa.gov/education/info_activities/pdfs/LA_radiation.pdf

Explanation:

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What part of an atom bonds with other atoms? ? A the innermost electrons B valence electronsany C the outermost protons D any el
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The process that enhances some properties of an object at the expense of other properties is called:
lidiya [134]

Answer:

The answer is: letter a, pop-out effect.

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Thus, this explains the answer.

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3 years ago
When light of wavelength 240 nm falls on a potassium surface, electrons having a maximum kinetic energy of 2.93 eV are emitted.
olchik [2.2K]

A) We want to find the work function of the potassium. Apply this equation:

E = 1243/λ - Φ

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Plug in and solve for Φ:

2.93 = 1243/240 - Φ

Φ = 2.25eV

B) We want to find the threshold wavelength, i.e. find the wavelength such that the energy E of the photoelectrons is 0eV. Plug in E = 0eV and Φ = 2.25eV and solve for the threshold wavelength λ:

E = 1243/λ - Φ

0 = 1243/λ - Φ

0 = 1243/λ - 2.25

λ = 552nm

C) We want to find the frequency associated with the threshold wavelength. Apply this equation:

c = fλ

c = speed of light in a vacuum, f = frequency, λ = wavelength

Given values:

c = 3×10⁸m/s, λ = 5.52×10⁻⁷m

Plug in and solve for f:

3×10⁸ = f(5.52×10⁻⁷)

f = 5.43×10¹⁴Hz

7 0
3 years ago
What is a random motion ​
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Random Motion is a motion in which an object didn't go in a straight manner, for ex: zig zag lines, curved, etc.

Explanation:

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3 years ago
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