A bedroom wall is to be painted around a window as shown below. A rectangle with length 11 feet and width 10 feet. A smaller rec
2 answers:
You might be interested in
Answer:
<h2>Outer Electric Field is 11250 N/C.</h2><h2>Inner Electric Field is -10000 N/C.</h2>Step-by-step explanation:
First of all, we need to read carefully and analyse the problem. As you can see, is an electrical subject, and it's given surface charge densities and radius.
So, to calculate electric fields, we need to find the proper equation to do so: ; as you can see, first we need to find the charges.
We can find all charges using the surface charge densities, because it has the next relation: ; which indicates that charge density is the amount of charge per area. But, there's a problem, we don't have areas, so we have to calculate them first with this relation:
; which gives us the surface of a sphere.
The inner surface:
The outer surface:
Now we can calculate the charges,
Inner charge:
Outer charge:
Then, we are able to calculate both fields:
Inner field:
Outer field:
The directions that field have is opposite each other, the inner one has an inside direction, and the outer electric field has an outside direction.
Answer:
It will be equal to 40
Step-by-step explanation:
We have to compute
Let first find 3 !
For this we have to use factorial concept
So 3! will be equal to 3! = 3×2×1 = 6
Now According to 6+2 = 8
And now after solving bracket we have to multiply with 5
So 5×8 = 40
So after computation
So the final answer will be 40