Answer:
The answer is question number A. Change in abiotic factors
Answer:
Explanation:
Using Coulomb's Law we know that the electric field E at point
is:

where
is the Coulomb's Constant, q is the source charge, d is the distance between point and position of the source point charge, and
is the position of the source point charge.
Taking all this in consideration, the unit vector clearly is:

For our problem,
, as the charge is located at the origin.
So

and d will be the magnitude of 
Now, we can take the values for each point.
<h3>a.</h3>

and, the magnitude of the vector is



So, the unit vector is:



<h3>b.</h3>

and, the magnitude of the vector is



So, the unit vector is:



<h3>c.</h3>

and, the magnitude of the vector is



So, the unit vector is:



Answer;
= 90600 m/s...
Explanation;
velocity of ball = 96 mi/hr = 42.916 m/s...
velocity of bat = -56mi/hr = -25.034m/s.. ( note the negativity here..)
time = 0.75 millisec = 0.75 * 10^-3 sec
acceleration = (velball - velbat) / time
= (42.916 - (-25.034)) / (0.75 * 10^-3)
=90600 m/s
Answer:
<h2><em>1,298,768.6</em></h2>
<em>hope</em><em> </em><em>that</em><em> </em><em>helps</em><em> </em><em>uh</em><em>.</em><em>.</em><em>☺</em>