It takes him
t = 16 miles / 156 mph = 0.1 hours
Color <span>is a physical property of all visible light determined by the light's frequency and visible to the human eye.</span>
Answer:
![2.4\cdot 10^{10}N](https://tex.z-dn.net/?f=2.4%5Ccdot%2010%5E%7B10%7DN)
Explanation:
When an electric charge is immersed in an electric field, it experiences a force given by the equation
![F=qE](https://tex.z-dn.net/?f=F%3DqE)
where
q is the charge
E is the magnitude of the electric field
In this problem, we have:
is the charge on the small piece of lint
is the force experienced by the charge
Therefore, we can find the magnitude of the electric field by re-arranging the equation and solving for E:
![E=\frac{F}{q}=\frac{3.0\cdot 10^{-9}}{1.25\cdot 10^{-19}}=2.4\cdot 10^{10}N](https://tex.z-dn.net/?f=E%3D%5Cfrac%7BF%7D%7Bq%7D%3D%5Cfrac%7B3.0%5Ccdot%2010%5E%7B-9%7D%7D%7B1.25%5Ccdot%2010%5E%7B-19%7D%7D%3D2.4%5Ccdot%2010%5E%7B10%7DN)
Answer:
= -8πx![10^{-7}](https://tex.z-dn.net/?f=10%5E%7B-7%7D)
Explanation:
If you need calculate
![\begin{equation}\\\oint_L B.dl\\ \end{equation}](https://tex.z-dn.net/?f=%5Cbegin%7Bequation%7D%5C%5C%5Coint_L%20B.dl%5C%5C%20%5Cend%7Bequation%7D)
You can use the Ampere's Law
=
μ
Where
: Current passing through the window
μ : Free space’s magnetic permeability
μ = 4πx![10^{-7} T.m.A^{-1}](https://tex.z-dn.net/?f=10%5E%7B-7%7D%20T.m.A%5E%7B-1%7D)
Then
= (3-5)4πx![10^{-7}](https://tex.z-dn.net/?f=10%5E%7B-7%7D)
= -8πx![10^{-7}](https://tex.z-dn.net/?f=10%5E%7B-7%7D)