Calculate the de Broglie wavelength of the following items. тe-- 9.11 х 1о 31 kg mp4 = 1.67 x 10-27 kg Melephant = 10 tonnes a. an electron travelling at 15 km s¯1? b. an electron with a kinetic energy of 1 eV? c. a proton travelling at 15 km s¬1? d. a proton with a kinetic energy of 1 eV?

Q: What is the de Broglie wavelength for an electron with speed (a) v = 0.469c and (b) v = 0.958c?…

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Q: De Broglie postulated that the relationship ? = h/p is valid for relativistic particles. What is the…

A: Given data: The kinetic energy of the electron EK=3.31 MeV We know that, The rest mass of the…

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: 19). To get a de Broglie wave that is visible to human eyes (size-wise, not visibility-wise, so A >…

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Q: An x ray tube has an applied voltage of 100 kV. (a) What is the most energetic x-ray photon it can…

A: Given: The applied voltage is 100 kV. Introduction: The energy of an electromagnetic wave is…

Q: The de Broglie wavelength of a 0.060 kg golf ball is 4.28 x 10^-34 m. What is its speed? (Ans. 26…

A: From de Broglie equation, the wavelength of a particle is expressed as: Rearrange the above…

Q: . An electron has a de Broglie wavelength of 2.79 Å. Determine (a) the magnitude of its momentum and…

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Q: Lead has a prominent x - ray emission line at 75.0 keV. (a) What is the minimum speed of an incident…

A: a). From the equation of the kinetic energy, the speed of the electron is,

Q: Q1 What is the kinetic energy of a proton if the de Broglie wavelength is 1 x 10-15 m, the proton…

A: De broglie wavelength =1×10^-15 m Rest energy of proton= 0.938×10⁹ eV

Q: What is the de Broglie wavelength of an electron with a kinetic energy of 12.8 eV

A: The de Broglie wavelength is given by  λ =hp where, h is the Plank's constant and p is the momentum.…

Q: What is the de Broglie wavelength of an electron accelerated from rest through a potential…

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Q: The work function for sodium is 2.46 eV. (a) Find the cutoff wavelength for sodium. nm (b) What is…

A: The work function of metal: (a) Cutoff wavelength during photoelectric emission is given by the…

Q: What is the energy of a photon that has the same wavelength as a 12-eV electron? (Ans. 3.5 keV)

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Q: Q2:- Find the de Broglie wavelength of (a) a 8-MeV proton: (b) a 55-GeV electron: (c) an electron…

A: a)                   Given that                   Energy of the proton (E) = 8Mev…

Q: (7) (a) The Sun has a surface temperature of 5770 K. It has a radius of 6.957 x 10% m. It radiates…

A: Given: The surface temperature is 5770 K. The radius is 6.957x198 m.

Q: Calculate the de Broglie wavelength of a 0.50 kg ball moving with a constant velocity of 26 m/s…

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Q: Electrons striking the back of a conventional TV screen travel at a speed of about 2.9 x 107 m/s.…

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Q: When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum…

A: Given : Wavelength of ultraviolet light λ = 400 nm             Kinetic Energy = 1.10 eV…

Q: Q2. What is the De Broglie wavelength of a 1.0 eV with a mass of 5.9 x 105 m/s

A: Given that: Velocity of the electron (v) = 5.9 ×105 m/s Mass of electron (m) = 9.1×10-31 Kg We know…

Q: An electron and a 6.00 - kg bowling ball each have 4.50 eV of kinetic energy. Calculate (a) le and…

A: (a) The de Broglie wavelengths of the electron is,

Q: At very low temperature, the de Broglie wavelengths of the atoms in a gas can become larger than the…

A: T=Temperature=200 nKkB=Boltzmann constant=1.381×10−23 m2kg/s2Kh=Planck constant=6.626×10−34 Jsm=Mass…

Q: The work function for iron is 4.50 eV. (a) Find the cutoff wavelength for iron.  nm (b) What is…

A: Given data *The work function for iron is ϕ=4.50 eV *The energy of an incident photon is E = 5.64 eV

Q: Singly charged sodium atoms are accelerated through a potential difference of 262 V. (a) VWhat is…

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Q: is the maximum wavelength of light that will cause photoelectron to be emitted from sodium. ? What…

A: Given:-  if 200 nm light falls on the sodium surface Find:-  a) What is the maximum wavelength of…

Q: Q2:- Find the de Broglie wavelength of (a) a 8-MeV proton; (b) a 55-GeV electron; (c) an electron…

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Q: 3. Find the momentum of (a) a 10.0-MeV gamma ray; (b) a 25-kev X ray; (c)a1.0-um infrared photon;…

A: (a) Given that, The energy associated with the gamma-ray, Eγ is 10.0 MeV=10×106 eV×1.6×10-19…

Q: Q2:- Find the de Broglie wavelength of (a) a 8-MeV proton: (b) a 55-GeV electron: (c) an clectron…

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Q: If a diffuse gas of atoms is trapped, cooled, and compressed, the de Broglie wavelengths of some…

A: Given data Temperature of the gas is , T=20 nK=20×10-9K Diameter of the atom, d=0.47nm=0.47×10-9 m

Q: The work function for zinc is 4.31 eV. (a) Find the cutoff wavelength for zinc. ____ nm (b) What…

A: The work function of zinc is 4.31 eV

Q: What is the magnitude of the momentum of an electron (in units of 1026 kg m s with a de Broglie…

A: de- Broglie Wavelength = h/mv  Where h= Planck constant = 6.626×10^-34 Js mv = momentum of electron…

Q: he work function of lithium is  W0 = 2.93 eV. (a) What is the maximum wavelength of incident light…

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Q: Ex1 / The minimum wave length for photoelectric emission in tungsten is 230nm. What wave length must…

A: 1 nm = 10-9 m  1eV = 1.6× 10-19 J

Q: 1. A system has a ground state energy of 2 eV.  The system is in an excited energy state with 10 eV…

A: part (1): Given:ground state energy = 2eVexcited state energy = 10eV

Q: What is the de Broglie wavelength of a 1375 kg car traveling at 10 m/s? M.V

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Q: Hw10 q6 An X-ray photon scatters from a free electron at rest at an angle of 125 ∘ relative to the…

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Q: 9.) A metal has a work function of 4.8 eV. What is the maximum kinetic energy of a photoelectron if…

A: In photoelectric effect if falling light has a frequency more than the threshold frequency or work…

Q: 4. (a) Calculate the de Broglie wavelength of An electron travelling at 4 × 106 m/s and (i) (ii) A…

A: a) Write the expression for the de-Broglie wavelength. Here, h is the Planck constant, m is the…