We commonly say that there are two types of electric charges, positive and negative. Imagine two charges Q and q are separated by a distance r as shown. Oa We construct a unit vector î pointing from Q to q. Then the force exerted on q by Q is given by Coulomb's Law: Fon q = CE 1 qQ 4πε γ2 ↑ Here CE is either +1 or -1. A. Which value of CE correctly expresses the direction of the force exerted on q by Q for all four combinations of the two charges being positive or negative? You may find it useful to build a table of the four possible sign combinations and the direction of the force on q for each combination. For two masses, the gravitational interaction is given by Newton's Law of Gravitation,
We commonly say that there are two types of electric charges, positive and negative. Imagine two charges Q and q are separated by a distance r as shown. Oa We construct a unit vector î pointing from Q to q. Then the force exerted on q by Q is given by Coulomb's Law: Fon q = CE 1 qQ 4πε γ2 ↑ Here CE is either +1 or -1. A. Which value of CE correctly expresses the direction of the force exerted on q by Q for all four combinations of the two charges being positive or negative? You may find it useful to build a table of the four possible sign combinations and the direction of the force on q for each combination. For two masses, the gravitational interaction is given by Newton's Law of Gravitation,
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Transcribed Image Text:We commonly say that there are two types of electric charges, positive and negative. Imagine
two charges Q and q are separated by a distance r as shown.
Q
We construct a unit vector î pointing from Q to q. Then the force exerted on q by Q is given by
Coulomb's Law:
on q
1 qQ
= CE Απερ 12
Î
Here CE is either +1 or -1.
A. Which value of CE correctly expresses the direction of the force exerted on q by Q for all
four combinations of the two charges being positive or negative? You may find it useful
to build a table of the four possible sign combinations and the direction of the force
on q for each combination.
For two masses, the gravitational interaction is given by Newton's Law of Gravitation,
Transcribed Image Text:which we write as:
M
Fon m = CGG
mM
r²
-↑
where CG is similarly either +1 or -1.
B. Which value of CG correctly expresses the direction of the force exerted on m by M?
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