? If it is, explain why it is a valid expression. If then write a correct expression for the net force.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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please answer all parts of the question, if it says to explain, use words

 

Two positive point charges +Q are fixed in place a distance b from a
negative point charge qo, as shown.
A student writes the following expression
for the magnitude of the net electric force on qo:
|EF|
=
2kQqo
b²
b
-90-$300
30°
30°
b
+Q
+Q
Is this expression correct? If it is, explain why it is a valid expression. If it is not, explain any errors
and how to correct them, then write a correct expression for the net force.
Transcribed Image Text:Two positive point charges +Q are fixed in place a distance b from a negative point charge qo, as shown. A student writes the following expression for the magnitude of the net electric force on qo: |EF| = 2kQqo b² b -90-$300 30° 30° b +Q +Q Is this expression correct? If it is, explain why it is a valid expression. If it is not, explain any errors and how to correct them, then write a correct expression for the net force.
b)
Say that you replaced the +Q charge on the top with a negative charge of equal
magnitude (-Q). How would the net force on qo now compare to the net force from before? You
can answer without explicitly calculating this new force, but make sure you discuss both the
direction and magnitude of the force. Explain your reasoning.
Transcribed Image Text:b) Say that you replaced the +Q charge on the top with a negative charge of equal magnitude (-Q). How would the net force on qo now compare to the net force from before? You can answer without explicitly calculating this new force, but make sure you discuss both the direction and magnitude of the force. Explain your reasoning.
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