Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 39.2, Problem 39.3QQ
To determine
The change in the stopping potential in figure.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Q1(A). Prove using step-by-step solution that f(v) = E/h is equal to 1.80x1015 Hz, therefore λ = C/f is equal to 254nm.
Q1(B). Refer to the visible light spectrum to determine what region of EM radiation does this light fall?
Q1(C). Show step-by step solution to integrate the velocity function if the initial position of the particle is s(0) = 9. Find the particle position at: (1) t = 1 sec ; (2) t = 5 sec
High-Energy Cancer Treatment.
Scientists are working on a new technique
to kill cancer cells by zapping them
with ultrahigh-energy (in the range of
1012 W) pulses of light that last for an
extremely short time (a few nanoseconds).
These short pulses scramble the interior
of a cell without causing it to explode, as
long pulses would do. We can model a
typical such cell as a disk in 3 mm
diameter, with the pulse lasting for 7 ns
with an average power of 7.4 x10¹2 W.
We shall assume that the energy is spread
uniformly over the faces of 100 cells for
each pulse. How much energy is given to
the cell during this pulse?
(answer in 2 decimal places and in
MegaJoule (MJ))
m, = 4px 107T. m/ A
c = 3 x 108 m/s
e 8.85 x 10-¹2 C²/Nm²
A 75 mW laser produces a (polarized) beam of 595 nm light.
This light reflects normally off an object that reflects 90 percent of the incident energy. How long does it take this laser to give the surface a momentum of 0.005 kgm/s
If the rms electric field inside the beam is 1600 v/m, what is the radius of the beam?
Chapter 39 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 39.1 - Prob. 39.1QQCh. 39.2 - Prob. 39.2QQCh. 39.2 - Prob. 39.3QQCh. 39.2 - Prob. 39.4QQCh. 39.3 - Prob. 39.5QQCh. 39.5 - Prob. 39.6QQCh. 39.6 - Prob. 39.7QQCh. 39 - Prob. 1PCh. 39 - Prob. 2PCh. 39 - Prob. 3P
Ch. 39 - Prob. 4PCh. 39 - Prob. 5PCh. 39 - Prob. 6PCh. 39 - Prob. 8PCh. 39 - Prob. 9PCh. 39 - Prob. 10PCh. 39 - Prob. 11PCh. 39 - Prob. 12PCh. 39 - Prob. 13PCh. 39 - Prob. 15PCh. 39 - Prob. 16PCh. 39 - Prob. 17PCh. 39 - Prob. 18PCh. 39 - Prob. 19PCh. 39 - Prob. 20PCh. 39 - Prob. 22PCh. 39 - Prob. 23PCh. 39 - Prob. 24PCh. 39 - Prob. 25PCh. 39 - Prob. 26PCh. 39 - Prob. 27PCh. 39 - Prob. 30PCh. 39 - Prob. 31PCh. 39 - Prob. 32PCh. 39 - Prob. 33PCh. 39 - Prob. 35PCh. 39 - Prob. 37PCh. 39 - Prob. 38PCh. 39 - Prob. 39PCh. 39 - Prob. 40APCh. 39 - Prob. 41APCh. 39 - Prob. 43APCh. 39 - Prob. 44APCh. 39 - Prob. 45APCh. 39 - Prob. 46APCh. 39 - Prob. 47CPCh. 39 - Prob. 48CPCh. 39 - Prob. 49CPCh. 39 - Prob. 50CP
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
- Roughly what frequency and what kind of light would you need to be able to separate an electron from a proton? Of = 1018 H z, x ray f = 1014 H z, visible light Of = 102° H z, y ray O f = 10° H z, microwavearrow_forwardHigh-Energy Cancer Treatment. Scientists are working on a new technique to kill cancer cells by zapping them with ultrahighenergy (in the range of 1012 W) pulses of light that last for an extremely short time (a few nanoseconds). These short pulses scramble the interior of a cell without causing it to explode, as long pulses would do. We can model a typical such cell as a disk 5.0 um in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0 * 1012 W. We shall assume that the energy is spread uniformly over the faces of 100 cells for each pulse. (a) How much energy is given to the cell during this pulse? (b) What is the intensity (in W/m2) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?arrow_forwarde. X-rays having a wavelength of 0.100 nanometer are scattered off initially stationary electrons, at an angle of 40.0⁰. (i) Calculate the wavelength of the scattered electromagnetic radiation (ii) What is the percent change in the wavelength of the X-rays due to scattering at this angle?arrow_forward
- The carbon-dioxide laser is one of the most powerful lasers developed. The energy difference between the two laser levels is 0.117 eV.(a) What is the frequency of the radiation emitted by this laser?(b) In what part of the EM spectrum is such radiation found?arrow_forwardWhat is the energy (in eV) of the following photons? A 450-nm photon of blue light?arrow_forwardA certain photon of red light has a wavelength of 462 nm. What is the speed of this photon?arrow_forward
- A limitation on how many spectra per second can be recorded by a time-of-flight mass spectrometer is the time it takes the slowest ion to go from the source to the detector. Suppose we want to scan up to m/z 500 for ions with z = 1. Calculate the speed of this heaviest ion if it is accelerated through 5.00 kV in the source. How long would it take to drift 2.00 m through a spectrometer? At what frequency could you record spectra if a new extraction cycle were begun each time the heaviest ion reached the detector? What would be the frequency if you wanted to scan up to m/z 1000?arrow_forwardHow much energy does a photon of UV light (frequency = 3.6 x 1016 Hz) have? How fast do the light travel in a vacuum, water (n=1.33), and glass (n=1.50)?arrow_forwardFresh out of university you've been hired to do some photoelectron spectroscopy. You have a lamp that outputs an unknown wavelength of light. When the light is incident on a metal with a work function of 6.31 eV, you observe a stopping voltage equal to 4.21 V. What is the wavelength of the light? (unit in nm).arrow_forward
- 1. a) What are the energy and momentum of a photon of red light of wavelength 650 nm? (b) What is the wavelength of a photon of energy 2.40 eV?arrow_forwardIn Thomson's experimental setup (Figure given below), the length of the deflecting plate is 3.0 cm and the distance of the screen to the deflecting plate is 1.0m (x axis). With the applied electrical field of 2.1 x10° V/m, image of the electron beam is observed at the height of 36 cm (y axis). With the applied magnetic field of 1.2 x 10° T, the image is seen at the center of the screen with no deflection. a) Find the initial velocity of the electron. b) Find the q/m for the electron. c) If the length of the deflecting plate would be 2.5 cm, where would the beam is observed? d) Assuming mass of the electron is known and the value is m=9.1x1031 kg, find the rest Energy, total energy and the kinetic energy of the electron. e) Find the relativistic momentum of the electron. Hint: Use equations in Thomson's experiment for a, b and c. Use relativistic kinematic equations for d and e by using the velocity you obtained in a. Deflecting plates- Cathode AB Anode Fluorescent screen- High voltage…arrow_forwardFiles -> A webassign.net/web/Student/Assignment-Responses/submit?dep=22985018&tags=autosave#question3540154_7 0.69435 V MW 7. Previous Answers V SERPSET9 34.P.032. At what distance from a 115 W electromagnetic wave point source does Emax = 13.0 V/m? 6.389 8. Previous Answers V SERPSET9 34.P.067. A 1.11-m-diameter circular mirror focuses the Sun's rays onto a circular absorbing plate 2.00 cm in radius, which holds a can containing 1.05 L of water at 20.0°C. (a) If the solar intensity is 1.02 kW/m2, what is the intensity on the absorbing plate? 785.46 kW/m2 (b) At the plate, what is the maximum magnitude of the field E? 24.335 V KN/C (c) At the plate, what is the maximum magnitude of the field B? 81.1187 V HT (d) If 40.0% of the energy is absorbed, what time interval is required to bring the water to its boiling point? 0.0119 X min Submit Answer 9. Previous Answers V There's a very important difference between light waves and sound waves (or any other types of waves, for that matter).…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning