A particle is described by the wavefunction Ψ(t, x), and the momentum operator is denoted by pˆ. a)  Write down an expression for the differential operator pˆ. b)  Write down an expression for the expectation value of the momentum, ⟨p⟩. c)  Write down an expression for the probability density, ρ. d)  Write down an expression for the probability of finding the particle between x = a and x = b.

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A particle is described by the wavefunction Ψ(t, x), and the momentum operator is denoted by pˆ.

  1. a)  Write down an expression for the differential operator pˆ.

  2. b)  Write down an expression for the expectation value of the momentum, ⟨p⟩.

  3. c)  Write down an expression for the probability density, ρ.

  4. d)  Write down an expression for the probability of finding the particle between x = a and x = b.

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