Part A An electron has a total energy of 6.4 x 105 eV. What is its speed? Express your answer with the appropriate units. V = 1.8x108 S Submit ✓ Correct VP27.7.2 Part B Derive an expression for the speed of a particle of rest mass m in terms of its total energy E. Express your answer in terms of the variables m and E, and the speed of light c. V= = ₁ √ ₁ - ( 1² ) ² Submit Previous Answers VP27.7.3 ✓ Correct Part C v=.942 Previous Answers What is the speed of a particle if its total energy is equal to twice its rest mass energy? Express your answer to three significant figures and include the appropriate units. Submit HAS с Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining

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Chapter1: Units, Trigonometry. And Vectors
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Be sure to review Example 27.7 before attempting these problems.
VP27.7.1
Part A
An electron has a total energy of 6.4 x 105 eV. What is its speed?
Express your answer with the appropriate units.
v = 1.8x108
Submit
VP27.7.2
✓ Correct
Part B
Derive an expression for the speed of a particle of rest mass m in terms of its total energy E.
Express your answer in terms of the variables m and E, and the speed of light c.
Submit
V = C
- c√/₁-(²) ²
m
VP27.7.3
Previous Answers
Part C
✓ Correct
V = .942
Submit
Previous Answers
What is the speed of a particle if its total energy is equal to twice its rest mass energy?
Express your answer to three significant figures and include the appropriate units.
μA
с
Previous Answers Request Answer
?
X Incorrect; Try Again; 5 attempts remaining
Transcribed Image Text:Be sure to review Example 27.7 before attempting these problems. VP27.7.1 Part A An electron has a total energy of 6.4 x 105 eV. What is its speed? Express your answer with the appropriate units. v = 1.8x108 Submit VP27.7.2 ✓ Correct Part B Derive an expression for the speed of a particle of rest mass m in terms of its total energy E. Express your answer in terms of the variables m and E, and the speed of light c. Submit V = C - c√/₁-(²) ² m VP27.7.3 Previous Answers Part C ✓ Correct V = .942 Submit Previous Answers What is the speed of a particle if its total energy is equal to twice its rest mass energy? Express your answer to three significant figures and include the appropriate units. μA с Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining
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