<span>It can form four covalent bonds. </span>
Answer:
Force between two charges is 10.8 N
both charges are positive nature charge so they both repel each other and hence q2 will move away from charge q1
Explanation:
As we know that the force between two charge particles is given by Coulomb's law of electrostatics
So we will say it as

here we know that





Since both charges are positive nature charge so they both repel each other and hence q2 will move away from charge q1
Answer:
B. You would weigh the same on both planets because their masses and the distance to their centers of gravity are the same.
Explanation:
Given that Planets A and B have the same size, mass.
Let the masses of the planets A and B are
and
respectively.
As masses are equal, so
.
Similarly, let the radii of the planets A and B are
and
respectively.
As radii are equal, so
.
Let my mass is m.
As the weight of any object on the planet is equal to the gravitational force exerted by the planet on the object.
So, my weight on planet A, 
my weight of planet B, 
By using equations (i) and (ii),
.
So, the weight on both planets is the same because their masses and the distance to their centers of gravity are the same.
Hence, option (B) is correct.
Answer:
ANS : .Energy spent on spraying =
Explanation:
<em>Given:</em>
- <em>Radius of mercury = 1cm initially ;</em>
- <em>split into
drops ;</em>
Thus, volume is conserved.
i.e ,

- Energy of a droplet =
Δ
Where ,
- <em>T is the surface tension </em>
- <em>ΔA is the change in area</em>
Initial energy 
Final energy 
∴ .Energy spent on spraying = 
ANS : .Energy spent on spraying =
Answer:
Following are the answer to this question:
Explanation:
The wave is propagating at the incident wave which focuses on the stretchy and rotational inertia features of the whole medium via a material system. For both the mechanical waves there are many two basic types of incident waves: quality management program and transverse waves.
The rumor is also known as the "Norman Rockwell", in which the environment of some of the greatest physics attempts of our time, it pays to remain suspicious when remarkable reports of historical findings are made on social media.