28. Find the de Broglie wavelength of an electron (m= 9.11 x 10^-31 kg) with a velocity of 10^7 m/s. 1.37 x 10^10 m
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- 4. In an experiment on the photoelectric effect, a metal is illuminated by visible light of different wavelengths. A photoelectron has a maximum kinetic energy of 0.9 eV when red light of wavelength 640 nm is used. With blue light of wavelength 420 nm, the maximum kinetic energy of the photoelectron is 1.9 eV. Use this information to calculate an experimental value for the Planck constant h. [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. 63A ball has a mass of 0.0972 kg just before itstrikes the Earth after being dropped from abuilding 22.5 m tall.What is its de Broglie wavelength? The acceleration of gravity is 9.8 m/s2and Planck’sconstant is 6.62607 × 10−34 J · s.Answer in units of m.
- A ball has a mass of 0.129 kg just before it strikes the Earth after being dropped from a building 36.2 m tall. What is its de Broglie wavelength? The acceleration of gravity is 9.8 m/s 2 and Planck’s constant is 6.62607 × 10−34 J · s. Answer in units of m.A particle of matter is moving with a kinetic energy of 7.53 eV. Its de Broglie wavelength is 2.85 x 10^-12 m. What is the mass of the particle?Determine the wavelength of an electron that has a kinetic energy of 1.15 × 10 J. Report your answer in units of nm.
- The de Broglie wavelength of a 60 g golf ball is 4.28x10−34 m. What is its speed?Which has the larger de Broglie wavelength, a 0.50 kg ball moving with a speed of 25 m/s or an electron traveling at 2/3 the speed of light? The mass of an electron is 9.11 x 10-31 kg and the speed of light is 3 x 108 m/s. Select one: a. It could be either, depending on the circumstances. b. The ball c. The electron1a) Calculate the de Broglie wavelength of a 0.80 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h). =________m 1b)Calculate the de Broglie wavelength of a 0.62 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h).=_______ m