[Answered] Starting from rest, an electron accelerates through a potential difference of 67 V. What is its de ...

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Author Question: Starting from rest, an electron accelerates through a potential difference of 67 V. What is its de ... (Read 21 times)

dmcintosh

Hero Member
Posts: 517

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

Sr. Member
Posts: 346

Reply #1 on: Jul 28, 2018

Answer to Question 1

B

Answer to Question 2

A

dmcintosh

Hero Member
Posts: 517

Reply #2 on: Jul 28, 2018

Thanks

verrinzo

Sr. Member
Posts: 346

Reply #3 on: Jul 28, 2018

Welcome

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Author Question: Starting from rest, an electron accelerates through a potential difference of 67 V. What is its de ... (Read 21 times)

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