Answer:
the answer is c i think...
The charge on each coin is equal to
Given the following data:
Force = 2.0 Newton
Radius = 1.5 meters
To determine the charge on each coin, we would apply the law of electrostatic forces:
Mathematically, the law of electrostatic forces is given by the formula:
Note: (since the coin carry identical electric charges).
Therefore, the formula becomes:
Making q the subject of formula, we have:
Substituting the given parameters into the formula, we have;
Answer:
8 mph, 12 mph
Explanation:
t = Time taken = 7 hours
x = Speed of Randall
x+4 = Speed of Gregory
The distance they both will travel together is 140 miles if they start at the same time.


The speed of Randall is 8 mph
The speed of Gregory is 8+4 = 12 mph