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Electricity: Static Electricity

Static Electricity: Audio Guided Solution

Problem Set SE5, Question 1:

Two objects with charges Q1 and Q2 experience an electrical force of attraction of 8.0x10-4 N when separated by a distance of d. Determine the force of attraction if the same objects are separated by …
a. … a distance of 2•d.
b. … a distance of 3•d.
c. … a distance of 0.5•d.
d. … a distance of 2d and each object having double the charge.



 

Audio Guided Solution

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Habits of an Effective Problem Solver

An effective problem solver by habit approaches a physics problem in a manner that reflects a collection of disciplined habits. An effective problem-solver...

  • ... reads the problem carefully and develops a mental picture of the physical situation. If necessary, sketches a simple diagram of the physical situation to help visualize it.
  • ... identifies the known and unknown quantities; records them in an organized manner. A diagram is a great place to record such information. Equates given values to the symbols used to represent the corresponding quantity - e.g., Q1 = 2.4 μC; Q2 = 3.8 μC; d = 1.8 m; Felect = ???.
  • ... uses physics formulas and conceptual reasoning to plot a strategy to solve for the unknown quantity.
  • ... identifies the appropriate formula(s) to use.
  • ... performs substitutions and algebraic manipulations in order to solve for the unknown quantity.


 

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