Question: If the free electrons in a semiconductor have effective mass m c = 0.1m 0 , where m 0 is the mass of the electron

If the free electrons in a semiconductor have effective mass m_c = 0.1m₀, where m₀ is the mass of the electron in vacuum, what is their average speed at T = 300K? If the free holes in the same material have effective mass m_v = 1.5m₀, what is their average speed at the same temperature? Assume a Maxwell–Boltzmann distribution of the electron energies.

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