sing the average speed of a gas, (8?????)1/2, determine the average de Broglie wavelength for an He atom at 25 °C and at 500 °C.How fast would the He atom need to travel in order to have the same linear momentum as a 500 nm photon?
Q: A ground-state H-atom (n = 1) first absorbs a photon with a wavelength of 95.0 nm and then emits a…
A: Initially n=1 Wavelengths for energy absorbed= 95nm Wavelength for energy emit = 434
Q: In a photoelectric experiment it is found that a stopping potential of 1.00 V is needed to stop all…
A:
Q: The work function for indium is 4.12 eV. (d) If light of energy 7.14 eV is incident on indium, what…
A: Photoelectric effect is the phenomenon of emission of electrons from metals under the influence of…
Q: Problem 4: Ruby lasers have chromium atoms doped in an aluminum oxide crystal. The energy level…
A: Given data : Ground state energy E0 = 0 eV 1st excited state energy E1 = 1.79 eV 2nd excited state…
Q: lectron with an initial total energy of E=3.757 eV (in a region with zero potential) is incident on…
A: Given: The initial total energy of the electron is 3.757 eV. The potential is 1.952 eV.…
Q: On average, people in Adelaide have a mass of m = 85.5 kg and walk at a speed of v = 2.12 ms1, If we…
A: Given,
Q: ▼ In a photoelectric-effect experiment, the stopping potential is 1.37 V if the light used to…
A:
Q: The Bohr model of the single-electron, many-proton ion predicts the emitted/absorbed photon…
A: Solution:
Q: 3. Using the average speed of a gas, (8RT?MW)1/2, determine the average de Broglie wavelength for an…
A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…
Q: Light with a frequency of 2.89×10152.89×1015 Hz ejects electrons from the surface of aluminum, which…
A: The expression for the de-Broglie wavelength,
Q: When a metal was exposed to photons at a frequency of 1.25 × 10¹5 s¯¹, electrons were emitted with a…
A: Given Data: The frequency of each photon is .The maximum kinetic energy of the emitted electron is…
Q: A simple cubic crystal is cut so that the rows of atoms on its surface are separated by a distance…
A: Given: Distance,d=0.352nm=0.352×10-9mPotential Difference,V=175V A diffraction grating is a periodic…
Q: An electron is in a box of width 3.0 * 10-10 m. What are the de Broglie wavelength and the magnitude…
A: Given: The width of the box L = 3×10-10 m. The level for which momentum and de Broglie wavelength…
Q: 2. P2.4 Given a lum cubic cavity, with a medium refractive index n=1, a) show that the two lowest…
A: Given: L=1μm, μ=1 2.) The frequencies that exist in the cubic cavity are defined by : fn=nc2μLHere,…
Q: What should be the temperature (in Kelvin) of an ideal blackbody so that the photons of its light…
A:
Q: Using the average speed of a gas, (8RT/piMW)^1/2 determine the average de Broglie wavelength for an…
A: a)average speed = 8RTπMat t = 25 C = 298 K v = 8*8.314*298π* 0.004v = 1255.9 m/s Therefore, de…
Q: The attatched equation describes the cross section for the photoionization of a hydrogen atom in…
A: The attatched equation describes the cross section for the photoionization of a hydrogen atom in…
Q: 1.2. When a photoelectric cell with a copper cathode is illuminated by a Hg arc lamp, with…
A:
Q: An electron moving around single proton in an orbit charactarized by n = 4. How many of the…
A: Given:- n= 4
Q: Light of wavelength 416 nm incident on a metal surface with work function 2.36 eV leads to the…
A: To determine the maximum speed of the ejected electrons, we can use the equation for the kinetic…
Q: The diameter of a Hydrogen atom is about 10.6 nm. What is the minimum uncertainty in momentum of an…
A:
Q: Which of the following statements are true? Choose all that apply. A photon has kinetic energy.
A:
Q: An electron is trapped in a one-dimensional box that is 326 nm wide. Initially, it is in the n = 2…
A:
Q: What is the energy in eV and wavelength in μm of a photon that, when absorbed by a hydrogen atom,…
A:
Using the average speed of a gas, (8?????)1/2, determine the average de Broglie wavelength for an He atom at 25 °C and at 500 °C.How fast would the He atom need to travel in order to have the same linear momentum as a 500 nm photon?
Step by step
Solved in 5 steps
- Question 2: Deduce the work function for sodium from Fig. Q2. The intersection of the straight line with the horizontal axis is the cutoff frequency, vo=5.8×1014 /sec. For most conducting metals the value of the work function is of the order of a few electron volts. Calculate the photon energy of a typical microwave wavelength of λ = 5 cm. Can this energy sufficient to eject photoelectrons from metal surfaces? Why? Stopping potential (V) 3 2 0 VO 8 12 4 Frequency (1014/sec) Fig. Q21.3. A photoelectric cell has a cutoff wavelength, λc, of 262.7 nm. ☹ (a) What is the work function of the cell? (b) What current would be produced by the cell if the wavelength was increased to 300 nm? 400 nm? 500 nm? (c) What stopping voltage Vo would be required if the illuminating wavelength were to be reduced to 200 nm? (d) What would be the maximum kinetic energy of the photo-electrons in the case of 200 nm illumination? ¹February 28, 2024 1An electron is in a box of width 3.0 * 10-10 m. What are the de Broglie wavelength and the magnitude of the momentum of the electron if it is in the n = 1 level.
- What is the energy in eV and wavelength in µm of a photon that, when absorbed by a hydrogen atom, could cause a transition from the n = 4 to the n = 6 energy level? (a) energy in eV? (b) wavelength in µm?Light of wavelength 350 nm falls on a potassium surface, and the photoelectrons have amaximum kinetic energy of 1.3 eV.What is the work function of potassium?The speed of light is 3 × 108 m/s and Planck’sconstant is 6.63 × 10−34 J · s.Answer in units of eV. What is the threshold frequency for potassium?Answer in units of Hz.A) After a 0.790 nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.59E+6 m/s. What was the Compton shift in the photon's wavelength? B) Through what angle was the photon scattered?
- The velocity of an electron is known to be 1.000×105 m/s, with an uncertainty of Av = 1.00×102 m/s. (a) What is the minimum uncertainty in the electron's position, Av, in meters? (b) How does this compare to the de Broglie wavelength of the electron? (c) One of your professors (m = 75.0 kg) is pacing at the front of the classroom, and you measure their velocity to an uncertainty of Av = 0.100 m/s. What is the minimum uncertainty in a measurement of their position? (d) How does this compare to the height of your professor?Light with wavelength ? = 635 nm is incident on a metallic surface. Electrons are ejected from the surface. The maximum speed of these electrons is v = 4.40 ✕ 105 m/s. a) What is the work function of the metal (in eV)? b) What is the cutoff frequency for this metal (in Hz)?A photon having a wavelength of 182 nm strikes the surface of a metal sheet having a threshold frequency (νo) of 9.27 x 1014 s-1. Calculate the velocity of the ejected electron in SI units AND in units of miles per hour. Hint: Combine equations 1.3 (pg 16 of textbook) and 3.6 (pg. 94). Report the units of your answer.