Imagine an alternate universe where the value of the Planck constant is 6.62607 × 108 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 An airplane with a mass of 1.80 x 104 kg, 13.0 m long, moving at 900. km/h. A ball with a mass of 210. g, 8.0 cm wide, moving at 37.8 m/s. A grain of sand with a mass of 100 mg, 610. μm wide, moving at 9.00 mm/s. A virus with a mass of 4.9 x 10-17 g, 420. nm wide, moving at 1.90 μm/s. quantum or classical? Oclassical O quantum classical O quantum classical quantum O classical quantum BEET 000 Ar

Imagine an alternate universe where the value of the Planck constant is 6.62607 × 108 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 An airplane with a mass of 1.80 x 104 kg, 13.0 m long, moving at 900. km/h. A ball with a mass of 210. g, 8.0 cm wide, moving at 37.8 m/s. A grain of sand with a mass of 100 mg, 610. μm wide, moving at 9.00 mm/s. A virus with a mass of 4.9 x 10-17 g, 420. nm wide, moving at 1.90 μm/s. quantum or classical? Oclassical O quantum classical O quantum classical quantum O classical quantum BEET 000 Ar

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Imagine an alternate universe where the value of the Planck constant is 6.62607 × 10-40 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 A raindrop with a mass of 3.0 mg, 0.8 mm wide, moving at 6.6 m/s. An eyelash mite with a mass of 9.1 µg, 260 pm wide, moving at 44. um/s. An alpha particle with a mass of 6.6 x 10-27 kg, 8.0 x 10 15 m wide, moving at 16. km/s. A car with a mass of 1300. kg, 4.6 m long, moving at 134.0 km/h. quantum or classical? classical O quantum oooooo O classical O quantum O classical O quantum O classical O quantum X S
What wavelength of radiation has photons of energy 6.12×10−19 J ? Express your answer with the appropriate units.
Electron microscopes operate on the fact thatelectrons act as waves. A typical electron kinetic energy is100 keV (1 eV 5 1.602 3 10219 J). What is the wavelength ofsuch an electron? (Ignore relativistic effects.)
In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with the metal magnesium, which has a threshold energy of 5.86 × 10⁻¹⁹ J, and ultraviolet light of wavelength 55.5 nm, what would be the kinetic energy (in J) of the electron displaced?
Decide if the following set of quantum numbers is permissible. If not, indicate which value is wrong. n, l, ml, ms 2, 0, 0, +1/2
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.05 nm. What is the final state of the hydrogen atom?
Thermal neutrons are neutrons that move at speeds comparable to those of air molecules at room temperature. These neutrons are most effective in initiating a nuclear chain reaction among 235U isotopes. Calculate the wavelength (in nm) associated with a beam of neutrons moving at 7.00 × 102 m/s (mass of a neutron = 1.675 × 10-27 kg).
Calculate the wavelength of light emitted when an electron falls from the 96 orbit of the hydrogen atom. Such species are known as high Rydberg atoms. They are detected in astronomy and are more and more studied in the 3. n=97 orbit to the n = laboratory.
A silicon (Φ = 7.77 × 10-19 J) surface is irradiated with UV radiation with a wavelength of 195 nm. Assume an electron was a mass of 9.11 x 10-31 kg. What is the frequency of incident radiation? What is the speed of emitted electrons? What is the kinetic energy of emitted electrons? What is the wavelength of the emitted electrons?
In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a metal by a photon was the difference in energy between the photon and a threshold energy value for the metal. If you were to perform a similar experiment with the metal silver, which has a threshold energy of 7.43 × 10⁻¹⁹ J, and ultraviolet light of wavelength 45.5 nm, what would be the speed (v) of the dislodged electron in meters per second? (K.E. = 1/2mv². The mass of the electron = 9.109 × 10⁻³¹ kg.)