James Prescott Joule <span>first showed a clear connection between mechanical energy and heat
In short, Your Answer would be Option B
Hope this helps!</span>
Answer: 5km per hour
If the train is going 25km in 5 hours, you can figure out how many kilometers per hour it is traveling by dividing 25km by the 5 hours.
25/5 = 5km per hour
Explanation:
Answer: 
Explanation:
According to <u>Coulomb's Law:</u>
<em>"The electrostatic force 
between two point charges 
and 
is proportional to the product of the charges and inversely proportional to the square of the distance 
that separates them, and has the direction of the line that joins them".</em>
<em />
Mathematically this law is written as:
Where:
is the electrostatic force
is the Coulomb's constant
and 
are the electric charges
is the separation distance between the charges
Solving:
It shows the first law of Newton.
The first law states that :-
'If an object is at rest it will be at rest or if it is at motion, it will be in the state of motion until an external force is applied'
Since the airplane is at rest, it will be at rest showing the first law
