Define electron volt and atomic mass unit calculate the energy in joules equivalent to the mass of one proton.
Answers
Answer:
6.25 * 10^18 is a correct ans
Definition and energy are given below -
The definition of electron volt in simple terms is - energy gained or lost by an electron when it accelerates from rest through potential difference of one volt in vacuum. 1 eV or electron volt = 1.6*10-¹⁹ Joules.
The definition of atomic mass unit is - "mass equal to one twelfth or (1/12) the mass of atom of carbon-12." Carbon 12 is an isotope of carbon containing six neutrons and protons.
Given - Mass of proton - 1.6726 x 10-²⁷ kg.
Speed of light - 3*10⁸ m/s²
Find - Energy in joules.
Solution - Energy of one proton can be calculated by the famous equation E = m*c² where E is energy, m is mass and c is speed of light.
Keeping the values in equation-
E = 1.6726*10-²⁷ * (3*10⁸)²
E = 1.5*10-¹⁰ Joules.