Momentum delivered to a surface by absorbed light

1. A.
   $3 \times 10^{- 17}\text{ }kg\text{ }m/s$
2. B.
   $2 \times 10^{- 17}\text{ }kg\text{ }m/s$
3. C.
   $1 \times 10^{- 17}\text{ }kg\text{ }m/s$
4. D.
   $0.5 \times 10^{- 17}\text{ }kg\text{ }m/s$

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1. A.
   $2.46 \times 10^{- 3}\text{ }kg\text{ }m/s$
2. B.
   $2.16 \times 10^{- 3}\text{ }kg\text{ }m/s$
3. C.
   $1.58 \times 10^{- 3}\text{ }kg\text{ }m/s$
4. D.
   $4.32 \times 10^{- 3}\text{ }kg\text{ }m/s$

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1. A.
   $\theta = \frac{3E}{4mc\sqrt{gl}}$
2. B.
   $\theta = \frac{E}{mc\sqrt{gl}}$
3. C.
   $\theta = \frac{E}{2mc\sqrt{gl}}$
4. D.
   $\theta = \frac{2E}{mc\sqrt{gl}}$

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