Why must the protons be accelerated to high energies
In bombarding atomic nuclei with proton "bullets", why must the protons be accelerated to high energies if they are to make contact with the target nuclei?
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The hot gas supply to a propulsion nozzle is at a pressure of 55kpa and temperature of 800K. the ambient pressure is 15kpa. If the ratio of specific heats is 1.33, approximately constant, and the molecular weight of the mixture is 30.
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