**Answer:**

**The speed of the electron is v = 1.01 x 10¹⁵ m/s**

**Explanation:**

Given data,

The mass of the electron, m = 9.11 x 10⁻³¹ kg

The radius of the circle, r = 2.00 x 10⁻² m

The force acting on electron, F = 4.60 x 10⁻¹⁴ N

The speed of the electron, v = ?

The centripetal force of the electron is given by

F = mv² / r

∴ v² = Fr/m

v =√(Fr/m)

Substituting the given values in the above equation,

v =√( 4.60 x 10⁻¹⁴ x 2.00 x 10⁻² / 9.11 x 10⁻³¹ )

v = 1.01 x 10¹⁵ m/s

**Hence, the speed of the electron is v = 1.01 x 10¹⁵ m/s**

To rearrange these for v and r we must use BEDMAS.

First, times both sides by r, getting Ar = v²r/r

You can cancel out r/r to get Ar = v²

To get v, square root both sides. √Ar = √v²

Cancel out the square root and the squared v = √Ar

To get r, go back to Ar = v², then divide both sides by A. rA/A = v²/A

Then cancel out A/A to get r. r = v²/A

**Answer:**

Conduction

**Explanation:**

"Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules."

The heat in your hand melts that chocolate, making it conduction.

We use conservation of energy. Note that at the beginning of the drop, the pig has only potential energy, and at the bottom, it has only kinetic energy. Then:

Now, we multiply by

to get:

Then, we have that:

Now, we substitute.

while

. Therefore,

.

Answer:

initial velocity=2.4m/s

Explanation:

Using the formula:

v=u+at

v= final velocity (6m/s)

u=initial velocity (???)

a=acceleration (0.2 m/s²)

t=time(18 seconds)

v=u+at

6=u+(0.2*18)

6=u+3.6

u=6-3.6

u (initial velocity)=2.4m/s