There are 8 hydrogen atoms
same, stapler, gravity, motion, acceleration
Option B is correct. If an incident light ray hits a flat, smooth object at 28°. It will reflect off at an angle of 28°.
<h3>What is the law of reflection?</h3>
The law of reflection specifies that upon reflection from a downy surface, the slope of the reflected ray is similar to the slope of the incident ray.
The reflected ray is consistently in the plane determined by the incident ray and perpendicular to the surface at the point of reference of the incident ray.
When the light rays descend on the smooth surface, the angle of reflection is similar to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in a similar plane.
If an incident light ray hits a flat, smooth object at 28 degrees, it will reflect off at an angle of 28°.
Hence, option B is correct
To learn more about the law of reflection, refer to the link;
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Answer:
Spinning permanent magnets within an array of fixed permanent magnets.
Explanation:
Any relative motion between magnets (be they permanent or electromagnetic) and a coil of wire will induce an electric current in the coil.
What will not induce an electric current is the relative motion between the two coils of wire (because there is no change in magnetic field), or the relative motion between two magnets (there are no coils of wire to induce the current into).
Therefore, spinning permanent magnets within an array of fixed permanent magnets does not induce an electric current.
<em>In all other choices, coils of wire are there to be induced current into, and magnets are present to create changing magnetic fields. </em>
Answer:
Explanation:
Given:
electric field, 
charge, 
initial position coordinates, 
final position coordinates, 
We find the distance through which the charge has been moved:
Where we have (x1,y1) & (x2,y2) as the initial and final coordinates of the points.
Now we need the angle through which displacement is made with respect to the direction of electric field.
![\theta= tan^{-1}[\frac{76-(-131)}{107-(-81)} ]](https://tex.z-dn.net/?f=%5Ctheta%3D%20tan%5E%7B-1%7D%5B%5Cfrac%7B76-%28-131%29%7D%7B107-%28-81%29%7D%20%5D)
Now from the relation between the change in potential difference:
∵The change in voltage is defined as the work done per unit charge.
∴
Putting the respective values
