Lesson 2.1 Homework
1.
What is the total positive charge contained in 1.0 kg of hydrogen gas?
2.
How many protons are there in 1.0 C of
positive charge?
3.
Two charged particle exert a force of 4.2
×
10
-2
N on each other. They
are moved towards each other so that the distance between them now
one-eighth of the original value. What is the force they exert on each
other now?
4.
Two charged balls are 15 cm apart. They are moved away from each
other so that the force is now one-third of the original value. How far
apart are they now?
5.
Three point charges each carrying a charge of 11.0
μ
C are located at
the corners of an equilateral triangle of side 15.0 cm. Calculate the
magnitude and direction of the force on each charge.
6.
You and a friend each have mass 60 kg and each are holding a 1.0 c
charge. At what distance from each other is the magnitude of the
electrical force on the charges equal to your weight on the surface of
the earth?
7.
Two equal point-like masses, each carrying positive charge q, are
suspended from a common point by threads of equal length l. The

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