The result of the Sun's light being refracted when it is
high in the sky around noon is blue, indigo and violet are strongly bent that
mostly skim through the upper atmosphere making the sky appear blue. The
refraction of the light during noon makes the sky blue.
Answer: 1/R = 1/r1 + 1/r2 + 1/r3
Explanation:
Just did the test myself. Hope this helps!
while discovered less than 100 years ago isotopes are now used in a wide variety of scientific applications that touch the lives of almost every citizen.
If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.
<h3>What is an electrical charge?</h3>
An electrical charge can be positive or negative. From the laws of electrostatics, unlike charges attract while like charges repel. As such the effect observed when the rods are individually brought near the sphere will decide the charge on the sphere.
If the sphere is neutral, there is no effect observed when each rod is brought near the sphere. If the sphere is positively charged, the positive rod is repelled by the sphere while the negative rod is attracted by the sphere.
Learn more about electrostatics: brainly.com/question/9774180
The electrostatic force acting on a charge q is given by
![F=qE](https://tex.z-dn.net/?f=F%3DqE)
where E is the electric field's intensity.
In our problem, the particle is an electron, so its charge is
![q=e=-1.6 \cdot 10^{-19}C](https://tex.z-dn.net/?f=q%3De%3D-1.6%20%5Ccdot%2010%5E%7B-19%7DC)
. We know the intensity of the force, so we can find the magnitude of the electric field at the point where the electron is located:
![E= \frac{F}{q}= \frac{2.9\cdot 10^{-15}N}{-1.6 \cdot 10^{19}C}=-1.8 \cdot 10^4 N/C](https://tex.z-dn.net/?f=E%3D%20%5Cfrac%7BF%7D%7Bq%7D%3D%20%5Cfrac%7B2.9%5Ccdot%2010%5E%7B-15%7DN%7D%7B-1.6%20%5Ccdot%2010%5E%7B19%7DC%7D%3D-1.8%20%5Ccdot%2010%5E4%20N%2FC%20%20)
where the negative sign means that the force and the electric field have opposite direction, because the charge is negative.