<span>The moon's gravitational pull causes: currents tides.</span>
Answer:
25.2563 m/s
Explanation
This is the equation needed

So Just plug in!
Sn is Tin which has 50 atomic number
it means it has 50 electrons in its outer shells
+2 shows its valency
plus sign comes when electrons are removed from an atom
so here 2 electrons are removed from Sn atom
remaining electrons are 50-2
48 electrons
Answer:
v=4m/s
Explanation:
The formulas for accelerated motion are:

We can derive the formula
from them.
We have:

And substitute:

Where in the first step of the last row we just multiplied everything by 2a. Since
is the displacement d, we have proved that 
We use then our values to calculate the final velocity when starting from rest, traveling a distance 0.002m with acceleration
:

A 4x100 relay is where 4 people run 100 meters and a 4x400 relay is where 4 people run 400 meters