Question: (a) Taking h() = 12Z eV in the quantum-mechanical energy-loss formula, calculate the rate of energy loss (in MeV/cm) in air at NTP, aluminum, copper,

(a) Taking h(ω) = 12Z eV in the quantum-mechanical energy-loss formula, calculate the rate of energy loss (in MeV/cm) in air at NTP, aluminum, copper, and lead for a proton and a mu meson, each with kinetic energies of 10,100,1000 MeV.

(b) Convert your results to energy loss in units of MeV • (cm²/g) and compare the values obtained in different materials. Explain why all the energy losses in MeV-(cm²/g) are within a factor of 2 of each other, whereas the values in MeV/cm differ greatly.

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