luclaporte2 luclaporte2

12-05-2021
Physics

contestada

The light intensity incident on a metallic surface with a work function of 1.88 eV produces photoelectrons with a maximum kinetic energy of 1.2 eV.
if the frequency of the light is doubled, what is the maximum kinetic energy of the photoelectrons?
Answer in units of eV.

Respuesta :

12-05-2021

Answer:

KE = KE (incidental) - KE of emitted photons

or KE = h * f - Wf

So h * f = KE + Wf = 1.2 + 1.88 = 3.08 incident energy

If you double the frequency then h * f = 6.16

KE = 6.16 - 1.2 = 4.96 eV

Answer Link

Otras preguntas

A rifle with a weight of 35 N fires a 4.5-g bullet with a speed of 240 m/s. (a) Find the recoil speed of the rifle in m/s. (b) If a 650-N man holds the rifle fi

What is the volume of the composite figure? Express the answer in terms of pi. 144pi mm 168pi mm 312pi mm 456pi mm

What does rich in the substance that plants need to grow mean

A purpose of the Declaration of Independence was to explain

What part of the scientific method involves constructing a tentative and testable explanation based on observations and research?

Hans is being asked to try alcohol. He uses a firm voice when he says no. This is an example of nonverbal communication. O A. True O B. False

Use the drop-down menus to identify the voice of each underlined verb. Two homes were broken into, but there are still no suspects. Active voice Passiv

Which details from the excerpt best support the conclusion that this story is about the creation of the world? Select two options. Things turn into geographica

The continuous movement of water between the Earth's surface and the atmosphere is known as: condensation the hydrological cycle evaporation precipitation

What is the vertex for the graph below?