## Problem number 1.23 [ENDORSED]

$c=\lambda v$

Melody Zhang 3L
Posts: 35
Joined: Fri Sep 28, 2018 12:21 am

### Problem number 1.23

Does anyone know how to convert from keV to joules?

Andonios Karas 4H
Posts: 30
Joined: Fri Sep 28, 2018 12:27 am

### Re: Problem number 1.23

1 kiloelectronvolt (keV) = 1.60218 x 10^-16 joules (j). Simple multiply by the ratio and cancel out units properly to get the answer in joules.

Ryan Danis 1J
Posts: 66
Joined: Fri Sep 28, 2018 12:18 am

### Re: Problem number 1.23  [ENDORSED]

The back of the textbook has a table labeled "RELATIONS BETWEEN UNITS"

It shows the relationship between 1 eV = 1.60218x10^-19

Keep in mind that 1 keV = 1,000 eV when converting!

005113695
Posts: 59
Joined: Fri Sep 28, 2018 12:15 am

### Re: Problem number 1.23

1 kilo-electronvolt = 1.60218^-16 Joules