Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 4, Problem 23QAP
To determine
The way through which beam of red light can carry as much energy as blue light.
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Gamma rays are photons with very high energy. How many visible-light photons with a wavelength of 500 nm would
you need to match the energy of a gamma-ray photon with energy 7.1 x 101J ?
6800
b)
1.1 x 1010
2.5 x 108
0.8 x 106
1.8 x 106
A photon of red light having wavelength 660 nm
has energy equal to (h = 6.6 × 10-³4Js)
A 1.0 × 10-¹⁹J
B 3.0 × 10-¹8J
C 1.0 × 10-⁹J
D 3.0 × 10-¹⁹J
Which one of the following is true regarding the energy of a photon?
It depends upon the intensity.
It depends upon its amplitude.
It depends upon its frequency.
It depends upon its velocity.
Chapter 4 Solutions
Understanding Our Universe
Ch. 4.1 - Prob. 4.1CYUCh. 4.2 - Prob. 4.2CYUCh. 4.3 - Prob. 4.3CYUCh. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAP
Ch. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAPCh. 4 - Prob. 11QAPCh. 4 - Prob. 12QAPCh. 4 - Prob. 13QAPCh. 4 - Prob. 14QAPCh. 4 - Prob. 15QAPCh. 4 - Prob. 16QAPCh. 4 - Prob. 17QAPCh. 4 - Prob. 18QAPCh. 4 - Prob. 19QAPCh. 4 - Prob. 20QAPCh. 4 - Prob. 21QAPCh. 4 - Prob. 22QAPCh. 4 - Prob. 23QAPCh. 4 - Prob. 24QAPCh. 4 - Prob. 25QAPCh. 4 - Prob. 26QAPCh. 4 - Prob. 27QAPCh. 4 - Prob. 28QAPCh. 4 - Prob. 29QAPCh. 4 - Prob. 30QAPCh. 4 - Prob. 31QAPCh. 4 - Prob. 32QAPCh. 4 - Prob. 33QAPCh. 4 - Prob. 34QAPCh. 4 - Prob. 35QAPCh. 4 - Prob. 36QAPCh. 4 - Prob. 37QAPCh. 4 - Prob. 38QAPCh. 4 - Prob. 39QAPCh. 4 - Prob. 40QAPCh. 4 - Prob. 41QAPCh. 4 - Prob. 42QAPCh. 4 - Prob. 43QAPCh. 4 - Prob. 44QAPCh. 4 - Prob. 45QAP
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- Does changing the intensity of a monochromatic light beam affect the momentum of the individual photons in the beam? Does such a change affect the net momentum of the beam?arrow_forwardWhich aspects of the photoelectric effect cannot be explained by classical physics?arrow_forwardIn the interpretation of the photoelectric effect, how is it known that an electron does not absorb more than one photon?arrow_forward
- Give an example of an experiment in which light behaves as waves. Give an example of an experiment in which light behaves as a stream of photons.arrow_forwardWhat is the momentum of a 4-cm microwave photon?arrow_forwardShow that the energy E in eV of a photon is given by E=1.241106 m/A. where A is its wavelength in meters.arrow_forward
- If we were to consider waves on the electromagnetic spectrum with wavelengths of 4.3 x 10^7 nm and 2.0 x 10^11 nm (the range of a baleen whale in saltwater), what would the energy of one photon in each of those waves be(in J)?arrow_forwardIn what part of the EM spectrum would a photon of energy 2.1 ✕ 10−11 J be found? What is its energy in electronvolts?arrow_forwardSuppose that the microwave radiation has a wavelength of 11.6 cm. How many photons are required to heat 265 mL of coffee from 25.0 degrees Celcius to 62.0 degrees Celcius? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/(g.K), as water over this temperature range.arrow_forward
- (a) A certain X-ray photon has a wavelength of 18 nm. Calculate the frequency (υ) of this type of radiation. The speed of light, c = 2.998 x 108 m/s (b) Do you expect the frequency of photon of blue color light to be greater than, less than, or the same as the frequency of this X-ray photon? Explain your reasoning.arrow_forwardWhich of these photons has the biggest energy? Visible. All have the same. Microwave Ultraviolet.arrow_forwardApproximately how many volts would absorbing red photons create in a solar cell?(remember that eV stands for electron-volt] Spectral parts IR-C IR-B IR-A VIS UVA UVB 700 600 500 400 300 200 100 1. 3 Photon energy [eV] 1.7 2.5 3.2 3.8 Spectral irradiance [W/m?eV]arrow_forward
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