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Author Question: An electron in a cathode ray tube is accelerated through a potential difference of 10 kV. What ... (Read 81 times)

panfilo

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on: Jul 28, 2018
An electron in a cathode ray tube is accelerated through a potential difference of 10 kV. What kinetic energy does the electron gain in the process? (e = 1.6  10-19 C)
 a. 8.0  10-16 J
  c. 8.0  1022 J
  b. 1.6  10-15 J
  d. 1.6  10-16 J

Question 2

During a snowball fight, two balls with masses of 0.4 and 0.6 kg, respectively, are thrown in such a manner that they meet head-on and combine to form a single mass. The magnitude of initial velocity for each is 20 m/s. What is the speed of the 1.0-kg mass immediately after collision?
 a. zero
  c. 4 m/s
  b. 3 m/s
  d. 5 m/s


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dantucker

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

B

Answer to Question 2

C


panfilo

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

mammy1697

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Reply 3 on: Yesterday
Wow, this really help

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