A 20.0-kg particle has a deBroglie wavelength of 10.0 cm. How fast is the particle moving? A. 1.30 x 10-34 m/s B. 2.64 x 10-34 m/s C. 3.31 x 10-34 m/s D. 3.98 x 10-34 m/s E. 4.40 x 10-34 m/s
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A 20.0-kg particle has a deBroglie wavelength of 10.0 cm. How fast is the particle moving?
A. 1.30 x 10-34 m/s
B. 2.64 x 10-34 m/s
C. 3.31 x 10-34 m/s
D. 3.98 x 10-34 m/s
E. 4.40 x 10-34 m/s
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- Given that the energy of an electron in the He+ ion is Z²RH n² En = - } what is the energy of a photon that can excite an electron from the ground state to the first excited state? a. 4/3 RH b. RH c. 5 RH d. 4 RH e. 3 RHA green light wavelength = 530 nm shines on a metal. It is determined that the stopping potential is 1.5V. a. calculate the binding energy of the metal. b. calculate the max speed of an ejected electron. c. calculate the minimum frequency of light that would expel electrons from the metal.2. A particle of matter is moving with a kinetic energy of 6.55 eV. Its de Broglie wavelength is 1.34 x 10^-12 m. What is the mass of the particle? 4.68E-26 kg 1.40E-25 kg 1.99E-25 kg 1.17E-25 kg
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- An isolated atom of certain element emits light of wavelength 529 nm when the atom falls from its sixth excited state into its third excited state. The atom emits a photon of wavelength 422 nm when it drops from its seventh excited state into its third excited state. frind wavelength of the light radiated when the atom makes a transition from its seventh to its sixth excited state, in um. a. 21 b. 2.09 c. 2086.34 d 0.0209 e. 208. 633.0 eV photons excite atoms in a gas from their ground state to the n = 3 excited state. The atoms are then observed emitting 2.0 eV photons. Usingwhat you learned in the table above, what other emitted photon energies would be observed?A. 3.0 eV and 5.0 eV B. 3.0 eV and 1.0 eV C. 1.0 eV and 4.0 eVD. 3.0 eV only E. 1.0 eV onlyDetermine the wavelength of an electron that has a kinetic energy of 1.15 × 10 J. Report your answer in units of nm.