In this lesson, we will learn how to calculate the rest mass-energy of massive objects and how much energy is required to produce particles with given masses.
Q1:
The amount of energy needed to create a tauon–antitauon pair is 3,560 MeV. An electron has a rest mass of 511/𝑐keV. How many times more massive is a tauon than an electron? Give your answer to the nearest integer.
Q2:
If a metal sphere has a rest mass energy of 4.5×10 J, what is its rest mass? Give your answer to one decimal place.
Q3:
A proton has a rest mass of 1.67×10 kg. What is the rest mass energy of a proton? Give your answer in scientific notation to two decimal places.
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