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Author Question: Starting from rest, an electron accelerates through a potential difference of 67 V. What is its de ... (Read 65 times)

dmcintosh

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on: Jul 28, 2018
Starting from rest, an electron accelerates through a potential difference of 67 V. What is its de Broglie wavelength? (h = 6.63  10-34 Js, me = 9.11  10-31 kg, and 1 eV = 1.60  10-19 J)
 a. 1.1  10-10 m
  c. 1.9  10-10 m
  b. 1.5  10-10 m
  d. 2.3  10-10 m

Question 2

The de Broglie wavelength of a 0.060-kg golf ball is 3.56  10-34 m. What is its speed? (h = 6.63  10-34 Js)
 a. 31 m/s
  c. 26 m/s
  b. 15 m/s
  d. 48 m/s


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verrinzo

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

A


dmcintosh

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Reply #2 on: Jul 28, 2018
Thanks


verrinzo

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Reply #3 on: Jul 28, 2018
Welcome :)


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