Answer:
56.52 inches
Step-by-step explanation:
The circumference of a circle can be found using:
We know the diameter is 18, and 
is being rounded to 3.14, so we can substitute them in.
c=3.14*18 <em>Multiply</em>
c=56.52
So, the circumference is 56.52 inches
Answer:
<em>a </em>- 13
Step-by-step explanation:
a- 13 because you are taking 13 away from a
If you only want to know what it means ¨c¨ then it is the Denominator, cause you are referring a fraction.
Answer:
The electric field generated by a point charge is given by:
where
is the Coulomb's constant
Q is the charge
r is the distance from the charge
We want to know the net electric field at the midpoint between the two charges, so at a distance of r=5.0 cm=0.05 m from each of them.
Let's calculate first the electric field generated by the positive charge at that point:
where the positive sign means its direction is away from the charge.
while the electric field generated by the negative charge is:
where the negative sign means its direction is toward the charge.
If we assume that the positive charge is on the left and the negative charge is on the right, we see that E1 is directed to the right, and E2 is directed to the right as well. This means that the net electric field at the midpoint between the two charges is just the sum of the two fields:
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Step-by-step explanation:
