PHYSICS F/SCI.+ENGR.,CHAPTERS 1-37
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ISBN: 9780134378060
Author: GIANCOLI
Publisher: RENT PEARS
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Chapter 38, Problem 8Q
To determine
The effect of larger value of Planck’s constant in our daily life.
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What is the difference between planck constant (h) and reduced planck constant (h-cut)?
A typical atomic nucleus is about 5x10^-15m in radius. Use the uncertainty principle to place a lower limit on the energy an electron must have if it is to be part of a nucleus.
Use E = h ν and Planck’s constant to calculate theamount of energy in each quantum of the followingfrequencies. Don’t forget to substitute s-1 for Hz.
Long waves: 3.40 X 105 Hz
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PHYSICS F/SCI.+ENGR.,CHAPTERS 1-37
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- Show that Planck’s constant has the dimensions of angular momentum.arrow_forwardExplain the connection between Planck's hypothesis of energy quanta and the energies of the quantum harmonic oscillator.arrow_forwardCheck Your Understanding What is de Broglie’s wavelength of a non-relativistic proton with a kinetic energy of 1.0 eV?arrow_forward
- How do the allowed orbits for electrons in atoms differ from the allowed orbits for planets around the sun?arrow_forwardCheck Your Understanding Find the de Brogue wavelength and kinetic energy of a free electron that travels at a speed of 0.75c.arrow_forwardWhy are X-rays emitted only for electron transitions to inner shells? What type of photon is emitted for transitions between outer shells?arrow_forward
- At what velocity will an electron have a wavelength of 1.00 m?arrow_forwardIf an electron and a proton are traveling at the same speed, which one has the shorter de Brogue wavelength?arrow_forwardGather the information and try to correlate it with these equations: v = c λ-1 and E = hv thus, E = hc λ-1 where h = Planck’s constant, 6.63 x 10-34 Joulesarrow_forward
- What is the frequency in Hertz of an X-ray with wavelength (9.00x10^-2) nm? (Give your answer to 3 sf). Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answerarrow_forwardExplain why dimensional quantities like Planck’s constant cannot be arguments of some functions like the exponential function ?^ℎarrow_forwardThe Heisenberg uncertainty principle can be expressed in the form:ΔE· Δt ≥ h/4πWhere E represents energy and t represents time. Show that the units for this form are the same as the units for the form used in this chapter:Δx · Δ (mv) ≥ h/4πarrow_forward
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