Pressure is the amount of force exerted on an object and force is strength or energy of an action
<span>Two of them are "redshift" and "blueshift", which are used to describe an object'smotion toward or away from us in space. Redshift indicates that an object is moving away from us. "Blueshift" is a term that astronomers use to describe an object that is moving toward another object or toward us.</span>
F = 1440 N. The repulsion force between two identical charges, each -8.00x10⁻⁵C separated by a distance of 20.0 cm is 1440 N.
The easiest way to solve this problem is using Coulomb's Law given by the equation 
, where k is the constant of proportionality or Coulomb's constant, q₁ and q₂ are the charges magnitude, and r is the distance between them.
We have to identical charges of -8.00x10⁻⁵C, are separated by a distance of 20.0 cm, and we need to know the force of repulsion between the charges.
First, we have to convert 20.0 cm to meters.
(20.0 cm x 1m)/100cm = 0.20 m
Using the Coulomb's Law equation:
Kinetic energy can be solved by using the following formula: Kinetic energy = (1/2)*m*v^2
Where:
m = mass = 54 kg
v = velocity = 3 m/s
Since we are already given the needed values in the problem, direct substitution will be done:
KE = <span>(1/2)*m*v^2
</span>KE = <span>(1/2) * 54 * (3)^2
</span>KE = 243 J
