damyiaedwardsperiod3 damyiaedwardsperiod3

12-05-2020
Physics

contestada

7. A photon of violet light has a frequency of 7.57 x 10' Hz. How much
energy (in electron-volts) does this photon carry?
O 5.01 ev
O 183 ev
O 3.13 eV
оо
8.76 eV

Respuesta :

isaacoranseola isaacoranseola

20-05-2020

Answer:

3.13 eV

Explanation:

E = hf

f =7.57 x 10' Hz.

h = 6.62× 10-34Js

E = 6.62× 10-34 × 7.57 x 10' Hz

E = 5.011× 10^ -30 J

1eV = 1.6×10^-19J

Hence ,

5.011× 10^ -30 J ÷1.6×10^-19J

= 3.132×10^-49

Answer Link

Otras preguntas

I need helppp what’s the answer to these no files please

The line L cuts the y-axis at (0, 5). L also passes through the point (2, 1). Find the equation of the line L.

how does using emotions and body language help to show what a character is feeling.( 5 sentences please) Please help me

What is y in the first line if the line passing though (-1,y) and (1,0) perpendicular to the line passing (8,4) and (-1,1) ?

y'all mind helping me please..

A footballer lobs a football at an angel 30 to the horizontal with an initial speed of 20m/s. What are the greatest height attained and the time of flight.

Solve for x. Round your answer to the nearest tenth. Will brainlist first correct

Correct the one word that is spelled incorrectly. In 1903, preservationist John Muir went camping with Teddy Roosevelt, during which time Muir convinced Rooseve

How do the witches behave in act 1 scene 3

Find the value of cosec290^ - sqrt 3 sec250