Electricity: Static Electricity
Static Electricity: Audio Guided Solution
Extra Problem 16:
Four charges are placed in a row as shown in the accompanying animation. There is a +7.0 microcoulomb charge placed at the 10 cm mark, a +4.0 microcoulomb charge placed at the 25.0 cm mark, a +8.0 microcoulomb charged placed at the 70.0 cm mark, and a +6 microcoulomb charge placed at the 90 cm mark. Determine the acceleration (in m/s/s) of a +1.0 coulomb charge placed at the 50.0 cm mark if the +1.0 Coulomb charge has a mass of 12,000 kg. Indicate the direction of the acceleration as well.
Audio Guided Solution
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 develop a mental picture of the physical situation. If necessary, sketches a simple diagram of the physical situation to help you 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.
Read About It!
The following pages from The Physics Classroom Tutorial may serve to be useful in assisting you in the understanding of the concepts and mathematics associated with these problems.
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