Answer:
The kinetic energy is 
Explanation:
From the question we are told that
The potential difference is 
The potential energy of the end is mathematically represented as
q is the charge on an electron with a constant value of 
substituting values
Now from the law of energy conservation
The 
Where 
is the potential energy at the end
So
The negative sign is not includes because kinetic energy can not be negative
Answer:
the answer is
B)It was the first planet located through mathematical calculations
Answer:
Explanation:
In this case we have to work with vectors. Firs of all we have to compute the angles between x axis and the r vector (which points the charges):
the electric field has two components Ex and Ey. By considering the sign of the charges we obtain that:
Hence, by replacing E1 and E2 we obtain:
![\vec{E}=[(68.67N/C)cos(90\°)-(16.52N/C)cos(17.10\°)]\hat{i}+[(68.67N/C)sin(90\°)-(16.52N/C)sin(17.10\°)]\hat{j}\\\\\vec{E}=(-15.78\hat{i}+63.81\hat{j})\frac{N}{C}](https://tex.z-dn.net/?f=%5Cvec%7BE%7D%3D%5B%2868.67N%2FC%29cos%2890%5C%C2%B0%29-%2816.52N%2FC%29cos%2817.10%5C%C2%B0%29%5D%5Chat%7Bi%7D%2B%5B%2868.67N%2FC%29sin%2890%5C%C2%B0%29-%2816.52N%2FC%29sin%2817.10%5C%C2%B0%29%5D%5Chat%7Bj%7D%5C%5C%5C%5C%5Cvec%7BE%7D%3D%28-15.78%5Chat%7Bi%7D%2B63.81%5Chat%7Bj%7D%29%5Cfrac%7BN%7D%7BC%7D)
hope this helps!!
There is the force of gravity on you and the ball by the Earth. The other half of the pair would be you and the ball applying the force of gravity on the Earth.
When you dribble the ball the floor applies a normal force on the ball to keep it from going through the floor. The ball applies a normal force back on the floor. There is also a normal force on you when you walk.
There is an applied force by your hand on the ball when you hit the ball down. The ball also applies the same force on your hand in the opposite direction.
