The electron and positron collide and annihilate each other, converting their total energy (sum of kinetic and rest energy) into energy carried by two photons:
2(1.64MeV + 0.511MeV) = 2
= 1.64MeV + 0.511MeV
= 2.15MeV
Answer:
a. E=8.97*10^{-21} J
b. v-He2 = 1.161 km/s
v-Ar2 = 369.74 m/s
Explanation:
(a) The average kinetic energy is given by

where KB is the Boltzman's constant and T is the temperature. For each molecule we have:

is the same for both type of molecules because is independent of the mass
(b)

where R is the constant of ideal gases, and M is the mass of the molecule. BY replacing for each type of molecule we obtain:

v-He2 = 1.161 km/s
v-Ar2 = 369.74 m/s
hope this helps!!
Answer:
A. a rigorously tested explanation
Explanation:
- B. and D. are out - theories are not opinionated, they are factual
- C. is out - not all theories are mathematical
- A. is the best choice
Answer: A. The reactants have higher potential energy, and energy is released.
Explanation:
ap3x
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