# Homework Help: Matter-antimatter energy

1. Apr 15, 2010

### abohn1

Science-fiction movies and TV shows often refer to antimatter propulsion
drives. This is not as far-fetched as it may seem. In a matter-antimatter
annihilation event, a particle and its antiparticle annihilate each other and
release all of their mass energy (such as in the reaction p+p→2γ, for
example). How many of these matter-antimatter annihilation events are
needed to get our kWh of energy? And what is the total mass of protons and
antiprotons required to do this?

Hint: The antiproton has the same mass as that of the proton,
938.3 MeV/c2 = 1.6726ï10-27 kg.

I'm not great with the whole concept of anti-matter, any help please? Such as equations to use and general concepts?

2. Apr 15, 2010

### tiny-tim

Welcome to PF!

Hi abohn1! Welcome to PF!

(try using the X2 tag just above the Reply box )

You don't need to know anything about anti-matter (and it's the same as matter, anyway ) …

just use e = mc2.

3. Apr 17, 2010

### Einstein Pie

actually antimatter-matter collisions create so much power! one particle of antimatter with one particle of matter will create 200 times the energy of a hydrogen bomb!!!!!!

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