Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 34, Problem 63P
(a)
To determine
The intensity of light form bulb.
(b)
To determine
The number of photons strikes per second.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
(a) If the power output of a 670 kHz radio station is 49.0 kW, how many photons per second are produced?
1.1679e32 X
How does power relate to energy? Review the relationship between energy and frequency of a photon. photons/s
(b) If the radio waves are broadcast uniformly in all directions, find the number of photons per second per square meter at a
distance of 125 km. Assume no reflection from the ground or absorption by the air.
2.138e21
If there is no reflection by the ground, what fraction of the radiated power reaches the receiver? What portion of the
spherical surface do you need to consider here? photons/(s · m2)
Additienel Mete niel
A glass plate has a mass of 0.50 kg and a specific heat capacity of 840 J/(kg-C). The wavelength of infrared light is 14 x 10 m, while
the wavelength of blue light is 4.7 x 107m. Find the number of infrared photons and the number of blue photons needed to raise the
temperature of the glass plate by 2.0 °C, assuming that all the photons are absorbed by the glass.
Nudrored Number
Units
Nyisible - Number
Units
Assuming that 10.0% of a 100-W light bulb’s energy output is in the visible range (typical for incandescent bulbs) with an average wavelength of 580 nm, calculate the number of visible photons emitted per second.
Chapter 34 Solutions
Physics for Scientists and Engineers
Ch. 34 - Prob. 1PCh. 34 - Prob. 2PCh. 34 - Prob. 3PCh. 34 - Prob. 4PCh. 34 - Prob. 5PCh. 34 - Prob. 6PCh. 34 - Prob. 7PCh. 34 - Prob. 8PCh. 34 - Prob. 9PCh. 34 - Prob. 10P
Ch. 34 - Prob. 11PCh. 34 - Prob. 12PCh. 34 - Prob. 13PCh. 34 - Prob. 14PCh. 34 - Prob. 15PCh. 34 - Prob. 16PCh. 34 - Prob. 17PCh. 34 - Prob. 18PCh. 34 - Prob. 19PCh. 34 - Prob. 20PCh. 34 - Prob. 21PCh. 34 - Prob. 22PCh. 34 - Prob. 23PCh. 34 - Prob. 24PCh. 34 - Prob. 25PCh. 34 - Prob. 26PCh. 34 - Prob. 27PCh. 34 - Prob. 28PCh. 34 - Prob. 29PCh. 34 - Prob. 30PCh. 34 - Prob. 31PCh. 34 - Prob. 32PCh. 34 - Prob. 33PCh. 34 - Prob. 34PCh. 34 - Prob. 35PCh. 34 - Prob. 36PCh. 34 - Prob. 37PCh. 34 - Prob. 38PCh. 34 - Prob. 39PCh. 34 - Prob. 40PCh. 34 - Prob. 41PCh. 34 - Prob. 42PCh. 34 - Prob. 43PCh. 34 - Prob. 44PCh. 34 - Prob. 45PCh. 34 - Prob. 46PCh. 34 - Prob. 47PCh. 34 - Prob. 48PCh. 34 - Prob. 49PCh. 34 - Prob. 50PCh. 34 - Prob. 51PCh. 34 - Prob. 52PCh. 34 - Prob. 53PCh. 34 - Prob. 54PCh. 34 - Prob. 55PCh. 34 - Prob. 56PCh. 34 - Prob. 57PCh. 34 - Prob. 58PCh. 34 - Prob. 59PCh. 34 - Prob. 60PCh. 34 - Prob. 61PCh. 34 - Prob. 62PCh. 34 - Prob. 63PCh. 34 - Prob. 64PCh. 34 - Prob. 65PCh. 34 - Prob. 66PCh. 34 - Prob. 67PCh. 34 - Prob. 68PCh. 34 - Prob. 69PCh. 34 - Prob. 70PCh. 34 - Prob. 71PCh. 34 - Prob. 72PCh. 34 - Prob. 73P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Show 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(a) How many minutes does it take a photon to travel from the Sun to the Earth? min (b) What is the energy in ev of a photon with a wavelength of 478 nm? ev (c) What is the wavelength (in m) of a photon with an energy of 1.03 eV?arrow_forwardA 100W sodium lamp radiates energy uniformly in all directions. The lamp is located at the centre of a large sphere that absorbs all the sodium light which is incident on it. The wavelength of the sodium light is 589 nm. (a) What is the energy per photon associated with the sodium light? (b) At what rate are the photons delivered to the sphere?arrow_forward
- (a) If the power output of a 650-kHz radio station is 50.0 kW, how many photons per second are produced? (b) If the radio waves are broadcast uniformly in all directions, find the number of photons per second per square meter at a distance of 100 km. Assume no reflection from the ground orabsorption by the air.arrow_forward(a) What is the energy in joules of an x-ray photon with wavelength 3.70 x 10-1⁰ m? J (b) Convert the energy to electron volts. kev (c) If more penetrating x-rays are desired, should the wavelength be increased or decreased? O increased decreased (d) Should the frequency be increased or decreased? O increased decreasedarrow_forward(a) Calculate the wavelength of light in vacuum that has a frequency of 5.25 x 10¹7 Hz. nm (b) What is its wavelength in ice? nm (c) Calculate the energy of one photon of such light in vacuum. Express the answer in electron volts. eV (d) Does the energy of the photon change when it enters the ice? O The energy of the photon does not change. O The energy of the photon changes.arrow_forward
- (a) What is the wavelength of a photon that has a momentum of 5.00 X 10-29 kg. m/s ? (b) Find its energy in eV.arrow_forwardThe average threshold of dark-adapted (scotopic) vision is 4.00 x 10-11 W/m? at a central wavelength of 500 nm. If light having this intensity and wavelength enters the eye and the pupil is open to its maximum diameter of 8.50 mm, how many photons per second enter the eye?arrow_forwardFind the energy of (a) a photon having a frequencyof 5.00 x 1017 Hz and (b) a photon having a wavelengthof 3.00 x 102 nm. Express your answers in units of electronvolts, noting that 1 eV = 1.60 x 10-19 J.arrow_forward
- How many photons per second are emitted by a 7.50 mW CO2 laser that has a wavelength of 10.6 mm?arrow_forwardA regular LED light bulb continuously emits 10.0 W of light uniformly in all directions. A man stands so that his eyes are 5.00 m away from this light bulb and he is looking directly at the light bulb. There are no other sources of light in this room. (a) What is the irradiance of this light in W/m2 just before entering this man's eyes? (b) If each pupil of this man is contracted to a radius of 2.00 mm, what is the total power in W of the light entering each eye? (c) A human receives 3300 J of usable energy after eating one blueberry. How long would this man have to stare at this light bulb in order to take into his eyes through the pupils the same amount of energy as eating a blueberry? Don't forget that he has two eyes! (Note that far more energy from the light is hitting his skin, but that is not what we care about here.)arrow_forwardA helium–neon laser produces a beam of diameter 1.75 mm, delivering 2.00 × 1018 photons/s. Each photon has a wavelength of 633 nm. Calculate the amplitudes of (a) the electric fields and (b) the magnetic fields inside the beam. (c) If the beam shines perpendicularly onto a perfectly reflecting surface, what force does it exert on the surface? (d) If the beam is absorbed by a block of ice at 0°C for 1.50 h, what mass of ice is melted?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax