1. Physics

    An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by 2.561 pm.  i.e.  The scattered X-ray photon has a wavelength 2.561 pm larger than the incident X-ray photon.   Find the
  2. Physics

    An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by 2.561 pm.  i.e.  The scattered X-ray photon has a wavelength 2.561 pm larger than the incident X-ray photon.   Find the
  3. physics

    Assuming that the equation Ephoton, final = Ephoton, initial/1 + Ephoton, initial/mec2 (1 − cos θ) can be approximately applied at all scattering angles θ, what is the minimum energy of a scattered X-ray photon if the incident X-ray energy
  4. Physics

    An X-ray photon scatters from a free electron with negligible initial kinetic energy at an angle of 121.2 degrees relative to the incident direction.   (Take the Compton wavelength of the electron to be 2.43 pm, and all other constants/conversions to
  5. physics

    An incident X-ray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered at an angle of 180.0 degrees and has a wavelength of 0.2849nm. Use the conservation of linear momentum to find the momentum
  6. physics

    An incident X-ray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered at an angle of 180.0degrees and has a wavelength of 0.2849nm. Use the conservation of linear momentum to find the momentum
  7. physics

    A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 275keV . What was the energy of the photon? E=in MeV What was the wavelength of the photon? wavelength in m Please help thank you!
  8. Physics

    A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 275keV . What was the energy of the photon? E=in MeV What was the wavelength of the photon? wavelength in m Please help thank you!
  9. Physics -Compton Scattering

    QUESTION 1: Calculate the maximum increase in photon wavelength that can occur during Compton scattering. = ??? pm QUESTION 2: What is the energy (in electron volts) of the smallest-energy x-ray photon for which Compton scattering could result in doubling
  10. College Physics

    An x-ray photon collides head-on with an electron and is scattered directly back at 160◦ to its original direction. What is the shift in the wavelength of the incident x-ray? do i need to figure out the "compton shift" in order to solve..can someone
  11. Physics

    X-rays with an energy of 300 keV undergo Compton scattering from a target. If the scattered x-ray are directed at 30 degrees relative to the incident rays, find a)The Compton shift at this angle b) The energy of the scattered x-ray c)The energy of the
  12. Physics

    X-rays with an energy of 300 keV undergo Compton scattering from a target. If the scattered x-ray are directed at 30 degrees relative to the incident rays, find a)The Compton shift at this angle b) The energy of the scattered x-ray c)The energy of the
  13. quantum physics

    After a .800-nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.20 x 10^6 m/s. (a) What was the Compton Shift in the photon's wavelength? (b) Through what angle was the photon scattered? I got an answer for (a), but
  14. physics (Compton effect)

    need helppp. Find the energy of an x-ray photon that can impart a maximum energy of 50 keV to an electron by Compton collision. Max energy being Kinetic Energy? do I just plug the 50*10^3 eV (convert to J) into the E=h (c/lambda) equation?? We are not
  15. General Chemistry

    Hospital X-ray generators emit X rays with wavelength of about 15.0 nanometers (nm), where 1 nm=10-9m. What is the energy of a photon in an X ray?
  16. chemistry

    an x-ray photon of wavelength 0.989nm stricks a surface. the emitted electron has a kinetic energy of 969 eV.what is the binding energy of the electron in kj/mol?
  17. Photon Energy

    How much energy is contained in 1 mol of each of the following? X-ray photons with a wavelength of 0.175 nm. Gamma-ray photons with a wavelength of 2.48×10^−5 nm.
  18. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
  19. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
  20. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
  21. Physics

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron.
  22. general chemistry

    An X-ray photon of wavelength 0.948nm strikes a surface. The emitted electron has a kinetic energy of 979 eV. What is the binding energy of the electron in Kjol/mol ?
  23. Physics help please

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron. i found the photon energy using compton scatter
  24. The Binding Energy of Electrons?

    An X-ray photon of wavelength 0.954 nm strikes a surface. The emitted electron has a kinetic energy of 935 eV. What is the binding energy of the electron in kJ/mol? [KE =1/2 mv^2; 1 electron volt (eV) = 1.602 x 10^- 19 J]
  25. Physics

    Gamma rays of photon energy 0.511 MeV are directed onto an aluminum target and are scattered in various directions by loosely bound electrons there.a) What is the wavelength of the incident gamma rays? b) What is the wavelength of the gamma rays scattered
  26. Physics

    Gamma rays of photon energy 0.511 MeV are directed onto an aluminum target and are scattered in various directions by loosely bound electrons there.a) What is the wavelength of the incident gamma rays? b) What is the wavelength of the gamma rays scattered
  27. Physics

    Gamma rays of photon energy 0.511 MeV are directed onto an aluminum target and are scattered in various directions by loosely bound electrons there.a) What is the wavelength of the incident gamma rays? b) What is the wavelength of the gamma rays scattered
  28. physics

    A Photon of energy 240 KeV is scattered by a free electron. If the recoil electron has a Kinetic energy of 190 KeV, what is the wavelength of the scattered photon?
  29. physics

    Calculate the frequency in hertz and cm-1, as well as the energy in joules and electron volts of an x-ray photon with a wavelength of 4.55 angstroms.
  30. CHEM

    I just have a couple of questions that I need some help with: 1) A 0.22-caliber handgun fires a 27g bullet at a velocity of 765m/s. Calculate the de Broglie wavelength of the bullet. Express your answer using two significant figures in meters. ~and~ 2) An
  31. physics

    a) If a photon and an electron each have the same energy of 20.0 eV, find the wavelength of each. b) If a photon and an electron each have the same wavelength of 250 nm, find the energy of each. c) You want to study an organic molecule that is about 250 nm
  32. physics

    What is the energy in joules of an x-ray photon with wavelength 8.40*10e-10 m? ____J? (b) Convert the energy to electron volts. ___eV ?
  33. chemistry

    Cobalt-60 is radioactive isotope used to treat cancers. A gamma ray photon emitted by this isotope has an energy of 2.13 x 10—13 J. What is the wavelength of this gamma ray in SI unit?
  34. physics

    in the compton scattering event, the scattered photon has an energy of 120 keV and the recoiling e- has an energy of 40 keV. Find the wavelength of the photon.
  35. Physics

    Which of the following is the most energetic? Infrared Photon,Gamma Ray Photon, X-Ray Photon, or Visible Photon. Is it Visible Photon?
  36. Physics

    When uranium 92U235 decays, it emits a ray. If the emitted ray has a wavelength of 1.30 x 10-11 m, determine the energy (in MeV) of the ray
  37. physics

    What is the wavelength of an X-ray photon with energy 6.0 (6000 )? (Hint: 1 = 1.60 10-19 joule.)?
  38. physics

    what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?
  39. Analytical Chemistry

    A photon of an X-ray radiation has a wavelength of 5.50 Å. For the radiation, calculate the (a)frequency in Hertz, (b)the energy in Joules, (c) the energy in electron volts (eV) and (d) the energy in kJ/mol.
  40. Analytical Chemistry

    A photon of an X-ray radiation has a wavelength of 5.50 Å. For the radiation, calculate the (a)frequency in Hertz, (b)the energy in Joules, (c) the energy in electron volts (eV) and (d) the energy in kJ/mol.
  41. Physics

    The Stanford Linear Accelerator can accelerate electrons to 50GeV (50x10^9eV). What is the minimum wavelength of photon it can produce by bremsstrahlung? Is this photon still called an x-ray?
  42. Physics

    The Stanford Linear Accelerator can accelerate electrons to 50GeV (50x10^9eV). What is the minimum wavelength of photon it can produce by bremsstrahlung? Is this photon still called an x-ray?
  43. Physics

    The Stanford Linear Accelerator can accelerate electrons to 50GeV (50x10^9eV). What is the minimum wavelength of photon it can produce by bremsstrahlung? Is this photon still called an x-ray?
  44. Science

    I have a question from an old exam that I need help to understand, i'm not sure where to start An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The photon
  45. science

    I have a question from an old exam that I need help to understand, i'm not sure where to start An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The photon
  46. Chemistry

    When an electron makes a transition from the n=3 to the n=2 hydrogen atom bohr orbit, the energy difference between these two orbits (3.0x10^-19 J) is given off in a photon of light. The relationship ... between the energy of a photon and its wavelength is
  47. Chemistry

    I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The
  48. Chemistry

    I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The
  49. Quantum Physics

    How is it a substance can emit photons of visible light after absorbing ultra violet photons but not with infrared radiation The re-emitted photons must be of lessor energy (longer wavelength) than the incident photons. In a one-photon absorption process,
  50. Physics

    A photon of energy E strikes an electron at rest undergoes pair production, producing a positive electron(positron) and an electron, photon+electron produce positron+electron+electron The two electrons and the positron move off with identical momenta in
  51. Physics help please

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron mp=mass of proton=1.673x10^-27
  52. science

    Find the frequency and wavelength of a 50-MeV gamma-ray photon.
  53. Physics

    The energy of an X-ray photon is ..... the energy of a gamma ray photon. I think its the same as. Is that right?
  54. Math

    1. What is the name of the ray that is opposite of ray BA? Description of the ray. It's a straight line with the points A B C D all in a row. A) Ray BD B) Ray BA C) Ray CA D) Ray DA This doesn't make sense. I thought that CD would be opposite of BA. But
  55. Science

    What is the wavelength and the frequency of a 50-MeV gamma ray photon.
  56. Physics

    What is the momentum of a wavelength= 0.015nm X-ray photon? p= in kg*m/s Please help I am confused. Thank you.
  57. physics

    Hydrogen atom is initially in the ground state. It is excited by a photon bombardment and it then undergoes a transition from n = 3 to n=2 state. a) What is the frequency of the bombarding photon? b) What are the energy, momentum and the wavelength of the
  58. Physics

    Find energy of an X-ray photon which can impart maximum energy of 50 keV to electron?
  59. physics

    find the energy of an x-ray photon which can impact a maximum energy of 50 kev to an electron
  60. chemistry

    Calculate the energy of a photon of wavelength 3.1 µm with that of wavelength 0.166 nm. What I Got: 3.1 µm photon: 6.36x10^22j 0.166nm photon: 1.23x10^19j Also, what region of the electromagentic spectrum would each of these measurements belong to?
  61. Chemistry

    Cobalt-60 is a radioactive isotope used to treat cancers. A gamma ray emitted by this isotope has an energy of 1.33 MeV (million electron volts; 1 eV = 1.602 multiplied by 10-19 J). What is the frequency (in Hz) and the wavelength (in m) of this gamma ray?
  62. physics

    a photon whose energy equals the rest energy of the compton collision with an electron, if the electron moves off an angle of 40 degrees to the original photon direction, what is the energy of the scattered photon? assume all constant given. please i need
  63. Chemistry

    How fast must a 144 g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with = 100. pm?
  64. Physics

    How fast must a 138 g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with A = 100. pm?
  65. Physics

    A photon having wavelength λ scatters off a free electron at A (see figure below), producing a second photon having wavelength λ'. This photon then scatters off another free electron at B, producing a third photon having wavelength λ'' and
  66. physics modern

    1. a) If a photon and an electron each have the same energy of 20.0 eV, find the wavelength of each. b) If a photon and an electron each have the same wavelength of 250 nm, find the energy of each. c) You want to study an organic molecule that is about 250
  67. College Chemistry

    How fast must a 138 g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with = 100. pm?
  68. Physics

    I need help solving this please! I think that for part (b) I can use energy and wavelength to solve for frequency and the one with the highest frequency is the most damaging, but I'm not sure what to do for part (a). You want to study a biological specimen
  69. High School Science

    A ray of light goes from water (nwater=1.333) into ice (nice=1.309). Which of the following statements is true? 1) The ray gets closer to the normal after crossing the interface. 2) The ray does not change directions after crossing the interface. 3)The ray
  70. Chemistry

    A hydrogen atom in the ground state absorbs a photon with a wavelength and after it release a photon with a second wavelength. On which orbital will drop the electron?
  71. chemistry

    An hydrogen atom in the ground state absorbs a photon with a wavelength one and after release a photon with a wavelength two,on which orbital will drop the electron?
  72. Physics

    A light ray of wavelength 610 nm is incident at an angle θ on the top surface of a block of polystyrene surrounded by water. Find the maximum value of θ for which the refracted ray will undergo total internal re- flection at the left
  73. Chemistry/Physics

    "Colbalt-60 is a radioactive isotope used to treat cancers of the brain and other tissues. A gamma ray emitted by an atom of this isotope has an energy of 1.33 MeV (million electron volts; 1 eV = 1.602*10^-19 J). What is the frequency (in Hz) and
  74. science

    What is the wavelength of waves transmitted by an AM radio station operating at a frequency of 840 kilohertz? Calculate the energy of a photon whose frequency is 2450 megahertz What is the difference in energy for a photon of ultra-violet radiation,
  75. Physics

    The kinetic energy of a particle is equal to the energy of a photon. The particle moves at 6.9% of the speed of light. Find the ratio of the photon wavelength to the de Broglie wavelength of the particle. Take the speed to be non-relativistic.
  76. Physics Help please

    im not really understanding the question can someone please help me. the energy difference between states A and B is twice the energy difference between states B and C (C > B > A). In a transition (quantum jump) from C to B, an electron emits a
  77. college physics

    The energy difference between states A and B is twice the energy difference between states B and C (C > B > A). In a transition (quantum jump) from C to B, an electron emits a photon of wavelength 300 nm. What is the wavelength emitted when the
  78. Physics

    in the laboratory frame, a photon of energy 8.0 x 10^3 eV and a free electron of energy 2.0 x 10^3 eV (consider what is meant by 'energy' here; is it kinetic energy? total energy? can it be total energy?) are moving directly towards each other and collide
  79. Nuclear Chemistry

    The half- life of a positron is very short. it reacts with an electron, and the masses of both are converted to two gamma-ray photons: (0e+1)+ (0e-1)---> 2γ (the 0 in front of e is the mass # and behind it is the atomic #) (γ stands for the
  80. chem

    A photon of ultraviolet (UV) light possesses enough energy to mutate a strand of human DNA. What is the energy of a single UV photon having a wavelength of 24 nm? What is the energy of a mole of UV photons having a wavelength of 24 nm?
  81. Physics

    The kinetic energy of a massive particle is equal to the energy of a photon.  The massive particle moves at 1.49 % the speed of light.     What is the ratio of the photon wavelength to the de Broglie wavelength of the particle?  (Assume the standard
  82. physicss

    Which of the following is true for a photon? A photon of wavelength 3000 x 10-10 m has momentum twice than a photon of wavelength 6000 x10-10 m. A photon of wavelength 3000 x 10-10 m has momentum twice than a photon of wavelength 6000 x10-10 m. A photon of
  83. College Physics II

    1) An electron moving with a speed of 2.84E+6 m/s has the same momentum as a photon. Calculate the de Broglie wavelength of the electron. 2) Calculate the wavelength of the photon.
  84. Physics

    Which is more harmful---smaller wavelength, like gamma ray, or larger wavelength, like radio waves?
  85. physics help

    help me with this question 2. A hydrogen electron drops from the n=4 level to the n=1 level. A. What is the energy of an emitted photon? B. Calculate the frequency of the photon. C. Calculate the wavelength of the photon.
  86. physics

    The hydrogen atom consists of a proton with an electron in orbit about the proton. The laws of quantum mechanics determine that the radius of this orbit is 5.29x10^-11 meters. Therefore, calculate a) The electric potential the electron experiences. b) The
  87. chemistry

    When a photon of light hits the surface of a metal, a photoelectron may be emitted. Some of the photon's energy is required to free the electron from the surface. The remaining energy becomes the kinetic energy of the photoelectron. The minimum energy for
  88. Chemistry

    What is traveling faster, an x-ray wave or a radio wave? The question is so general, so how am I suppose to figure it out without any additional information? That is question #7 on our worksheet. Question #4 says how many times more energy is there in one
  89. Physics

    If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?
  90. Physics

    If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?
  91. Physics

    If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?
  92. Physics

    If a 6.0keV photon scatters from a fee proton at rest, what is the change in the photon's wavelength if the photon recoils at 90 degrees?
  93. GEOMETRY

    ray OC bisects <AOB, ray OD bisects <AOC, RAY OE BISECTS <AOD, RAY OF BISECTS <AOE NAD RAY OG BISECTS <FOC IF THE MEASUREOF <BOF EQUALS 120 DEGREES, THEN WHAT IS THE MEASURE OF <DOE?
  94. Roosevelt honors geometry

    ray OC bisects <AOB, ray OD bisects <AOC, RAY OE BISECTS <AOD, RAY OF BISECTS <AOE NAD RAY OG BISECTS <FOC IF THE MEASUREOF <BOF EQUALS 120 DEGREES, THEN WHAT IS THE MEASURE OF <DOE?
  95. Physics wavelength question, help please .

    The energy of an X-RAY quantum of wavelength 1.0 X 10^-10 m is. its answer is 1.99 X 10^ -15, but i don't know how to solve it , thanks help please
  96. Physics

    In which region of the electromagnetic spectrum do we find the energy to fully ionize hydrogen? A) Radio B) Infrared C) Visible D) Ultra-violet E) X-ray I want to know how you would go about doing this question; I know we need to find the wavelength, but
  97. chemistry

    I am confused on how to even start this problem... A ground state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and
  98. chemistry

    I am confused on how to even start this problem... A ground state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and
  99. Chemistry

    Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy level. Calculate the
  100. Kate

    Jay, Kay, Ray found themselves far apart for lunch while working in a field. Jay could see Kay, then turned 75 degrees and see Ray. Kay could see Ray, then turn 51 degrees and see Jay. Ray could see jay, then turn 54 degrees and see Kay. Which two were the