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Consider a photon of 7.5-nm wavelength light. Part (a) ✓ Calculate the momentum of the photon, in kilogram meters per second. Py = 8.84 * 10-26 Py=8.840 × 10-26 Part (b) ✓ Correct! Find the speed of an electron having the same momentum as this photon, in meters per second. Assume the electron is moving nonrelativistically. Ve = 9.70 * 104 Ve = 9.700 × 104 ✓ Correct! Part (c) What is the kinetic energy of this electron, in joules? KE = 8.6 * 10-17| Grade Summary Deductions 8% 92% sin() cos() tan() π (7 8 9 HOME cotan() asin() acos() E Λ Λ ^4 5 6 Potential Submissions Attempt(s) Remaining: 1 4% Deduction per Attempt detailed view atan() acotan() sinh() cosh() tanh() cotanh() Degrees Radians * 1 2 3 →>> 1 2 4% 4% + - 0 END VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Submission(s) Remaining Hints: 4% deduction per hint. Hints remaining: 1 - Part (d) Feedback: 5% deduction per feedback. What is the ratio of the energy of the photon to the kinetic energy of the electron? Ey/KE = 0.3100 * Attempts Remain

Consider a photon of 7.5-nm wavelength light. Part (a) ✓ Calculate the momentum of the photon, in kilogram meters per second. Py = 8.84 * 10-26 Py=8.840 × 10-26 Part (b) ✓ Correct! Find the speed of an electron having the same momentum as this photon, in meters per second. Assume the electron is moving nonrelativistically. Ve = 9.70 * 104 Ve = 9.700 × 104 ✓ Correct! Part (c) What is the kinetic energy of this electron, in joules? KE = 8.6 * 10-17| Grade Summary Deductions 8% 92% sin() cos() tan() π (7 8 9 HOME cotan() asin() acos() E Λ Λ ^4 5 6 Potential Submissions Attempt(s) Remaining: 1 4% Deduction per Attempt detailed view atan() acotan() sinh() cosh() tanh() cotanh() Degrees Radians * 1 2 3 →>> 1 2 4% 4% + - 0 END VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Submission(s) Remaining Hints: 4% deduction per hint. Hints remaining: 1 - Part (d) Feedback: 5% deduction per feedback. What is the ratio of the energy of the photon to the kinetic energy of the electron? Ey/KE = 0.3100 * Attempts Remain

University Physics Volume 3
University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter6: Photons And Matter Waves
Section: Chapter Questions
Problem 79P: What is the energy of a photon whose momentum is 3.01024 kg• m/s ?
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Consider a photon of 7.5-nm wavelength light. Part (a) ✓ Calculate the momentum of the photon, in kilogram meters per second. Py = 8.84 * 10-26 Py=8.840 × 10-26 Part (b) ✓ Correct! Find the speed of an electron having the same momentum as this photon, in meters per second. Assume the electron is moving nonrelativistically. Ve = 9.70 * 104 Ve = 9.700 × 104 ✓ Correct! Part (c) What is the kinetic energy of this electron, in joules? KE = 8.6 * 10-17| Grade Summary Deductions 8% 92% sin() cos() tan() π (7 8 9 HOME cotan() asin() acos() E Λ Λ ^4 5 6 Potential Submissions Attempt(s) Remaining: 1 4% Deduction per Attempt detailed view atan() acotan() sinh() cosh() tanh() cotanh() Degrees Radians * 1 2 3 →>> 1 2 4% 4% + - 0 END VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Submission(s) Remaining Hints: 4% deduction per hint. Hints remaining: 1 - Part (d) Feedback: 5% deduction per feedback. What is the ratio of the energy of the photon to the kinetic energy of the electron? Ey/KE = 0.3100 * Attempts Remain
Transcribed Image Text:Consider a photon of 7.5-nm wavelength light. Part (a) ✓ Calculate the momentum of the photon, in kilogram meters per second. Py = 8.84 * 10-26 Py=8.840 × 10-26 Part (b) ✓ Correct! Find the speed of an electron having the same momentum as this photon, in meters per second. Assume the electron is moving nonrelativistically. Ve = 9.70 * 104 Ve = 9.700 × 104 ✓ Correct! Part (c) What is the kinetic energy of this electron, in joules? KE = 8.6 * 10-17| Grade Summary Deductions 8% 92% sin() cos() tan() π (7 8 9 HOME cotan() asin() acos() E Λ Λ ^4 5 6 Potential Submissions Attempt(s) Remaining: 1 4% Deduction per Attempt detailed view atan() acotan() sinh() cosh() tanh() cotanh() Degrees Radians * 1 2 3 →>> 1 2 4% 4% + - 0 END VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Submission(s) Remaining Hints: 4% deduction per hint. Hints remaining: 1 - Part (d) Feedback: 5% deduction per feedback. What is the ratio of the energy of the photon to the kinetic energy of the electron? Ey/KE = 0.3100 * Attempts Remain
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