Ocean waves of wavelength 26 m are moving directly toward a concrete barrier wall at 4.4 m/s. The waves reflect from the wall, and the incoming and reflected waves overlap to make a lovely standing wave with an anti node at the wall. (Such waves are a common occurrence in certain places.) A kayaker is bobbing up and down with the water at the first anti node out from the wall. How far from the wall is she? What is the period of her up-and-down motion?
Ocean waves of wavelength 26 m are moving directly toward a concrete barrier wall at 4.4 m/s. The waves reflect from the wall, and the incoming and reflected waves overlap to make a lovely standing wave with an anti node at the wall. (Such waves are a common occurrence in certain places.) A kayaker is bobbing up and down with the water at the first anti node out from the wall. How far from the wall is she? What is the period of her up-and-down motion?
Ocean waves of wavelength 26 m are moving directly toward a concrete barrier wall at 4.4 m/s. The waves reflect from the wall, and the incoming and reflected waves overlap to make a lovely standing wave with an anti node at the wall. (Such waves are a common occurrence in certain places.) A kayaker is bobbing up and down with the water at the first anti node out from the wall. How far from the wall is she? What is the period of her up-and-down motion?
Example
Two charges, one with +10 μC of charge, and
another with - 7.0 μC of charge are placed in
line with each other and held at a fixed distance
of 0.45 m. Where can you put a 3rd charge of +5
μC, so that the net force on the 3rd charge is
zero?
*
Coulomb's Law Example
Three charges are positioned as seen below. Charge
1 is +2.0 μC and charge 2 is +8.0μC, and charge 3 is -
6.0MC.
What is the magnitude and the direction of the force
on charge 2 due to charges 1 and 3?
93
kq92
F
==
2
r13 = 0.090m
91
r12 = 0.12m
92
Coulomb's Constant: k = 8.99x10+9 Nm²/C²
✓
Make sure to draw a Free Body Diagram as well
Chapter 16 Solutions
College Physics: A Strategic Approach Technology Update, Books a la Carte Plus Mastering Physics with Pearson eText -- Access Card Package (3rd Edition)
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