What is the longest wavelength of light that will emit electrons from a metal whose work function is 3.70 eV

Question

07-03-2022
Physics

Answered

IDNLearn.com offers a comprehensive platform for finding and sharing knowledge. Discover thorough and trustworthy answers from our community of knowledgeable professionals, tailored to meet your specific needs.

What is the longest wavelength of light that will emit electrons from a metal whose work function is 3.70 eV

Sagot :

Thank you for using this platform to share and learn. Keep asking and answering. We appreciate every contribution you make. Discover the answers you need at IDNLearn.com. Thanks for visiting, and come back soon for more valuable insights.

Determine The Length Of The Unknown Side Using Pythagorean Theorem.

Write The Definition For Each Term: Alloy.

The Original Cavendish Experiment Measured The Gravitational Forces Between Two Small Spherical Objects. The Forces Observed Were Very Small. The Objects Used H

If The Federal Government Used The Progressive Tax Rate Below For Individual Income Tax, Calculate The Federal Income Tax Owed On A [tex]$58,200$[/tex] Salary.[

A Cylindrical Region Contains A Uniform Electric Field That Is Parallel To The Axis And Is Changing With Time. If R Is The Distance From The Cylinder Axis, The

What Is The Exact Value Of Cos(–60º)? Negative StartFraction StartRoot 3 EndRoot Over 2 EndFraction Negative One-half One-half StartFraction StartRoot 3 EndRoot

Sarah Grew Tired Of Hearing Doubts Come Out Of Her Parents' Mouths. Now, As The Lead In The Play, Sarah Had A Chance To Show Her Parents She Was Worth Something

Sophie Is Attending College Next Year. She Just Received Information On The College Costs And The Financial Aid Package The College Is Offering. Sophie Knows He

A Beam Of Protons Is Moving Toward A Target In A Particle Accelerator. This Beam Constitutes A Current Whos Value Is 0.63 Ma. How Many Protons Stirke The Target

Better Finance, Based In San Francisco, California, Provides Leasing And Credit Solutions To Consumers And Small Businesses. If Better Finance Wants To Distribu

Hannjridn Hannjridn · Answer 1 · 2022-03-07T18:25:36-05:00

Answer:

h f = Wf + K

where the total energy available is h f, Wf is the work function or the work needed to remove the electron and K is the kinetic energy of the removed electron

If K = zero then hf = Wf

Wf = h f = h c / λ or

λ = h c / Wf = 6.63E-34 * 3.0E8 / (3.7 * 1.6E-19)

λ = 6.63 * 3 / (3.7 * 1.6) E-7 = 3.36E-7

This would be 3360 angstroms or 336 millimicrons

Visible light = 400-700 millimicrons

Sagot :

Other Questions