express e^J•s/h as a power of 10 (without any e) where h = 6.63e-34J•s
The equation for photon energy, E, is E=hcλ where h = 6.626×10−34 J⋅s (Planck's constant) and c = 2.99×108 m/s (the speed of light). What is the wavelength, λ, of a photon that has an energy of E = 3.39×10−19 J ? Express your answer numerically in meters.
What is the frequency of a photon if the energy is 7.26 6.626 x 10 34J s) 10 19 J? (h =
An electron has a de Broglie wavelength λ = 5.7×10−10 m . h=6.626×10−34J⋅s, e=1.602×10−19C, me=9.109×10−31kg. What is its momentum? What is its speed? What voltage was needed to accelerate it from rest to this speed?
An electron has a de Broglie wavelength λ = 5.1×10−10 m . h=6.626×10−34J⋅s, e=1.602×10−19C, me=9.109×10−31kg. Part A What is its momentum? (two significant figures with units) Part B What is its speed? (two significant figures with units) Part C What voltage was needed to accelerate it from rest to this speed? (two significant figures with units)
8. (10 pts) By definition L+S=J. Express L-S in terms of the quantum numbers i, e, s
Evaluate the ratio Ry hc where the Rydberg constant, Ry = 2.18 x 1018 J, Z-1, Planck's constant, h 6.626076 x 10-34 J s, and c is the speed of light, c- 2.9979x 108 m/s. Express the answer in nanometers (1 nm 1x109 m).
A 10. W laser (where W=Watt, a unit of power. 1 W = 1 J/s) produces a beam of green light with a wavelength of 520. nm. Calculate the number of moles of photons emitted by this laser in 1.0 minute.
l e an alternate universe where the value of the Planck constant is 6.62607x 10 J-s In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? An atom with classical moving at 17 ass of 1.0 x 10 kg, 133. pm wide, m/s. quantum o dassical An iceberg with...
8. (10 pts) By definition L+S =J. Express L.S in terms of the quantum numbers i. e, s
J-J, f(x)--3, g : S → J, g(s) = nuniber of elements in the string 's', if is even. h : J-J, h(1)- r r if is odd - . where J denotes the set of integers and S denotes the set of all character strings. Calculate each of the following if they exist (if they do not exist explain why they do not exkt): (i) fo r (i) ho f(x), 8 marks) (ii) hofo g(test)
J-J, f(x)--3, g :...