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Author Question: A uranium nucleus (mass 238 units) at rest decays into a helium nucleus (mass 4.0 units) and a ... (Read 191 times)

PhilipSeeMore

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on: Jul 28, 2018
A uranium nucleus (mass 238 units) at rest decays into a helium nucleus (mass 4.0 units) and a thorium nucleus (mass 234 units). If the speed of the helium nucleus is 1.8  106 m/s, what is the speed of the thorium nucleus?
 a. 1.0  104 m/s
  c. 3.6  104 m/s
  b. 3.1  104 m/s
  d. 4.1  104 m/s

Question 2

An uncharged conductor is supported by an insulating stand. I pass a positively charged rod near the left end of the conductor, but do not touch it. The right end of the conductor will be:
 a. neutral.
  c. attracted. b. positive.
  d. negative.


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moormoney

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

B

Answer to Question 2

B


PhilipSeeMore

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Reply 2 on: Jul 28, 2018
:D TYSM

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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