**Answer:**

**Explanation:**

THE GIVEN sheet can be taken as two horizontal force with surface charge density is

at one surface is ∈_1 =

at oher surface is ∈_2=

the magnitude of electric field due to surface charge is given as

So, electric field at P (2 CM below from surface is) = E_1 +E_2

Because the weight of one ball is mg = 147 N, the gravitational force between the two balls is or parts per billion of the weight.

I believe the correct answer would be "A" energy source.

**Answer****:**** ****Time****.**

**Explanation:**

Hey there!!!

The reason is,

According to the question we have,

Initial velocity = 0m/s { as it starts from rest}.

Final velocity = 650 m/s

acceleration = 5m/s^2.

Looking on this formula,

Where "v" represents final velocity, "u" represents initial velocity and "a" represents acceleration. We dont have is time "t".

**So****,**** ****it's**** ****obvious**** ****that**** ****tine**** ****is**** ****an**** ****unknown**** ****variable****. **

**<em><u>Hope</u></em>****<em><u> </u></em>****<em><u>it helps</u></em>****<em><u>.</u></em>****<em><u>.</u></em>****<em><u>.</u></em>**

**Answer:**

v = 70 m/s

**Explanation:**

Range on the cannon ball is given as

here the angle of the projection of the ball is given as 45 degree

now we know that if the velocity of the ball is "v" then its two components will be given as

so here time of flight of the motion is given as

also the range is given as

now plug in all data in this equation