Which material will heat up the most quickly if placed near a heat source?
2 answers:
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The work done to pull the sled up to the hill is given by
where
F is the intensity of the force
d is the distance where the force is applied.
In our problem, the work done is
and the distance through which the force is applied is 
, so we can calculate the average force by re-arranging the previous equation and by using these data:
where
F is the intensity of the force
d is the distance where the force is applied.
In our problem, the work done is
The mass of the proton is:
and the mass of the antiproton is exactly the same, so the total mass of the two particles is
.
In the annihilation, all the mass of the two particles is converted into energy, and the amount of this energy is given by Einstein's equivalence between mass and energy:
where M is the mass converted into energy and c is the speed of light. In this example,
, therefore the energy released is
and the mass of the antiproton is exactly the same, so the total mass of the two particles is
In the annihilation, all the mass of the two particles is converted into energy, and the amount of this energy is given by Einstein's equivalence between mass and energy:
where M is the mass converted into energy and c is the speed of light. In this example,