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Author Question: The direction of an electric field is defined as the direction of force on A) a ... (Read 134 times)

c0205847

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on: Jul 29, 2018
The direction of an electric field is defined as the direction of force on
 
  A) a positively-charged particle.
  B) a negatively-charged particle.
  C) any charged particle.

Question 2

An aluminum wire and a steel wire, each of length 2.0 m, are hung from the ceiling. A 5.0-kg mass is suspended from the lower end of each wire.
 
  The aluminum wire has a diameter of 2.2 mm. What must be the diameter of the steel wire if it is to stretch the same distance as the aluminum wire, so that the two wires maintain equal lengths after the masses are attached? Young's modulus for aluminum is 0.70  1011 N/m2 and for steel it is 2.0  1011 N/m2.


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wuly

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

1.3 mm


c0205847

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Reply 2 on: Jul 29, 2018
Excellent

jackie

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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