I believe the correct answer is B
Here is how to answer the question.
Use the formula:
F = kq1q2/r^2
<span>F = force = 8.3x10^-4N </span>
<span>q1, q2 = charges </span>
<span>r = separatioon </span>
<span>k = constant = 9x10^9 in MKS units </span>
<span>so we have </span>
<span>r = sqrt[k q1 q2/F]
r = sqrt[9x10^9*(-14)x10^-9 * (-6)x10^-9 / 8.3x10^-4 ]</span>
<span>r = 0.0302 m
</span>
So the distance between spheres is 0.0302 m
The speed changes after the point. C’mon Dude this is so easy
Answer:
The speed is the same as long as the reflection is regular.
Explanation:
This is because in regular reflection, the angle of incidence is equal to the angle of reflection in accordance with the second law of reflection.
Since speed of light depends on the angle of the light ray it makes with the reflecting surface, the speed is the same
