College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 27, Problem 48AP
To determine
The kinetic energy acquired by the electron.
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An electron initially at rest recoils after a head - on collision with a 6.20 - keV photon. Determine the kinetic energy acquired by the electron.
An electron accelerated in an x-ray tube hits an anode (positively charged plate) target.
V =
+ High v
m/s
anode
=
4ee6
kV
48
ee
464646
No
No w
a) Assuming all of its energy is transferred in generating x-rays, how fast is the electron moving when
it reaches the anode target if it produces an x-ray with an energy of 60 keV. The mass of the electron
is 9.1×10-31 kg.
Hint: How is the energy of x-rays related to the KE of the electrons? How is the kinetic energy related
to the speed?
X-rays
cathode
b) What is the accelerating potential of the x-ray tube (potental difference between the anode and
cathode) in part a)?
Va
Ponder: How large is this volatge? Remember the a regular AA battery has a voltage of 1.5 V.
Suppose a linear accelerator (linac) creates a X-ray beam where every individual photon has an energy of 19 MeV. If
3x1010 photons are produced over 90x10-15 s, as measured through an area of 3.1 m², determine the intensity of
the X-ray beam.
I =
B W/m²
Chapter 27 Solutions
College Physics
Ch. 27.5 - Prob. 27.1QQCh. 27.5 - Prob. 27.2QQCh. 27.5 - Prob. 27.3QQCh. 27.6 - Prob. 27.4QQCh. 27.6 - Prob. 27.5QQCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 4CQCh. 27 - Prob. 5CQ
Ch. 27 - Prob. 6CQCh. 27 - Prob. 7CQCh. 27 - Prob. 8CQCh. 27 - Prob. 9CQCh. 27 - Prob. 10CQCh. 27 - Prob. 11CQCh. 27 - Prob. 12CQCh. 27 - Prob. 13CQCh. 27 - Prob. 14CQCh. 27 - Prob. 15CQCh. 27 - Prob. 16CQCh. 27 - Prob. 1PCh. 27 - Prob. 2PCh. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - Prob. 5PCh. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - Prob. 9PCh. 27 - Prob. 10PCh. 27 - Prob. 11PCh. 27 - Prob. 12PCh. 27 - Prob. 13PCh. 27 - Prob. 14PCh. 27 - Prob. 15PCh. 27 - Prob. 16PCh. 27 - Prob. 17PCh. 27 - Prob. 18PCh. 27 - Prob. 19PCh. 27 - Prob. 20PCh. 27 - Prob. 21PCh. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - Prob. 24PCh. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - Prob. 28PCh. 27 - Prob. 29PCh. 27 - Prob. 30PCh. 27 - Prob. 31PCh. 27 - Prob. 32PCh. 27 - Prob. 33PCh. 27 - Prob. 34PCh. 27 - Prob. 35PCh. 27 - Prob. 36PCh. 27 - Prob. 37PCh. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - Prob. 40PCh. 27 - Prob. 41APCh. 27 - Prob. 42APCh. 27 - Prob. 43APCh. 27 - Prob. 44APCh. 27 - Prob. 45APCh. 27 - Prob. 46APCh. 27 - Prob. 47APCh. 27 - Prob. 48APCh. 27 - Prob. 49APCh. 27 - Prob. 50APCh. 27 - Prob. 51APCh. 27 - Prob. 52AP
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- (a) The lifetime of a highly unstable nucleus is 10-20. What is the smallest uncertainty in its decay energy? (b) Compare this with the rest energy of an electron.arrow_forward2. Light of frequency 7.40 × 10¹4 Hz ejects electrons from surface (A) with a maximum kinetic energy that is -19 1.20 x 107 J greater than the maximum kinetic energy of electrons ejected from surface B. Calculate the difference in work function for these two surfaces. J ×60 S ssf60 ssfo SS €60 ssf603 ssf60 ssf F60 ss f60 ssf60 tengarrow_forwardAn electron accelerated in an x-ray tube hits an anode (positively charged plate) target. V= HOTE m/s +High V- = anode kV cer cer Ger 4848 46 N Now 484846 a) Assuming all of its energy is transferred in generating x-rays, how fast is the electron moving when it reaches the anode target if it produces an x-ray with an energy of 46 keV . The mass of the electron is 9.1 x10-31 kg. IM M Hint: How is the energy of x-rays related to the KE of the electrons? How is the kinetic energy related to the speed? X-rays cathode b) What is the accelerating potential of the x-ray tube (potental difference between the anode and cathode) in part a)? Va Ponder: How large is this volatge? Remember the a regular AA battery has a voltage of 1.5 V.arrow_forward
- K 1...arrow_forwardA certain X-ray machine generates X-rays from a beam of electrons accelerated from zero to 99.9999999 per cent the speed of light in a long linear accelerator of length 3.2 km. The electrons are generated in pulses of duration ∆t = 100 fs. The generated x-rays from the target are also short pulses (λ = 0.15 nm). Determine the energy of a single x-ray photon in the beam. a.) 8.27 eV b.) 8.27 J c.) 8.27 keV d.) none of these.arrow_forwardHow rapidly would each of the following particles be moving if they all had the same wavelength as a photon of red light (wavelength = 750 nm)?a. An electron of mass 9.10939 x 10^-28 g?b. A proton of mas 1.67262 x 10^-24 gc. A neutron of mass 1.67493 x 10^-24 gd. An alpha particle of mass 6.64 x 10^-24 g Please don't provide handwriting solutionarrow_forward
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