A helium-noen laser emits red light having a wavelength of 632.8nmand a power of 0.50 mW. How many photons are emitted eachsecond?(h = 6.6310^-34 J.s, c =3.0010⁸ m/s and 1 nm= 10^-9m) [2 sig.figs.]

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Casey DurganLv2

26 Apr 2019

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X-rays of wavelength of 0.0650 nm undergo Compton scattering from free electrons in carbon. What is the wavelength of photons scattered at 90.0° relative to the incident beam? (h = 6.63 $(h = 6.63 \times 10^{- 34} J \cdot s, m_{e} = 9.11 \times 10^{- 31} k g,$ 10^-34J·s, m_e = 9.11 $(h = 6.63 \times 10^{- 34} J \cdot s, m_{e} = 9.11 \times 10^{- 31} k g,$ 10^-31 kg, c = 3.00 $(h = 6.63 \times 10^{- 34} J \cdot s, m_{e} = 9.11 \times 10^{- 31} k g,$ 10⁸ m/s, and 1 nm = 10^-9m)

a. 0.0024 nm

b. 0.0674 nm

c. 0.0687 nm

d. 0.0626 nm

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A red laser emits photons with a wavelength of 635 nm.

(a) If this laser has a power of 23 W, how manyphotons does it emit in 1 s?
1 photons

(b) If the light emitted by the laser is absorbed by a blacksail,what is the force on the sail?
2 N

(c) If the light from this laser is reflected from a mirror, whatisthe force on the mirror?
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54. X rays of wavelength of 0.065 0 nm undergo Compton scatteringfrom free electrons in carbon. What is the wavelength of photonsscattered at 90.0Â° relative to the incident beam? (h = 6.63 Ã 10-34JÂ·s, me = 9.11 Ã 10-31 kg, c = 3.00 Ã 108 m/s, and 1 nm = 10-9m)
a. 0.002 4 nm b. 0.067 4 nm c. 0.068 7 nm d. 0.062 6 nm

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A helium-noen laser emits red light having a wavelength of 632.8nmand a power of 0.50 mW. How many photons are emitted eachsecond?(h = 6.6310^-34 J.s, c =3.0010⁸ m/s and 1 nm= 10^-9m) [2 sig.figs.]

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Physics: Principles with Applications

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A helium-noen laser emits red light having a wavelength of 632.8nmand a power of 0.50 mW. How many photons are emitted eachsecond?(h = 6.63*10-34 J.s, c =3.00*108 m/s and 1 nm= 10-9m) [2 sig.figs.]

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Physics: Principles with Applications

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A helium-noen laser emits red light having a wavelength of 632.8nmand a power of 0.50 mW. How many photons are emitted eachsecond?(h = 6.6310^-34 J.s, c =3.0010⁸ m/s and 1 nm= 10^-9m) [2 sig.figs.]