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abruzzese [7]
3 years ago
9

Consider a uniform hoop of radius r and mass m rolling without slipping. which is larger, its translational kinetic energy or it

s rotational kinetic energy?
Physics
1 answer:
OlgaM077 [116]3 years ago
3 0
<span>translational kinetic energy is larger than its rotational kinetic energy</span>
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How does a planet’s size affect the length of a rotation of that planet
svet-max [94.6K]
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Calculate the average linear momentum of a particle described by the following wavefunctions: (a) eikx, (b) cos kx, (c) e−ax2 ,
Maksim231197 [3]

Answer:

a) p=0, b) p=0, c) p= ∞

Explanation:

In quantum mechanics the moment operator is given by

              p = - i h’  d φ / dx

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We apply this equation to the given wave functions

a)  φ = e^{ikx}

        .d φ dx = i k e^{ikx}

We replace

        p = h’ k e^{ikx}

        i i = -1

The exponential is a sine and cosine function, so its measured value is zero, so the average moment is zero

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b) φ = cos kx

           p = h’ k sen kx

The average sine function is zero,

          p = 0

c) φ = e^{-ax^{2} }

         d φ / dx = -a 2x  e^{-ax^{2} }

         .p = i a g ’2x  e^{-ax^{2} }

       The average moment is

         p = (p₂ + p₁) / 2

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