Answer: Force F will be one-sixteenth of the new force when the charges are doubled and distance halved
Explanation:
Let the charges be q1 and q2 and the distance between the charges be 'd'
Mathematical representation of coulombs law will be;
F1=kq1q2/d²...(1)
Where k is the electrostatic constant.
If q1 and q2 is doubled and the distance halved, we will have;
F2 = k(2q1)(2q2)/(d/2)²
F2 = 4kq1q2/(d²/4)
F2 = 16kq1q2/d²...(2)
Dividing equation 1 by 2
F1/F2 = kq1q2/d² ÷ 16kq1q2/d²
F1/F2 = kq1q2/d² × d²/16kq1q2
F1/F2 = 1/16
F1 = 1/16F2
This shows that the force F will be one-sixteenth of the new force when the charges are doubled and distance halved
 
        
             
        
        
        
Answer:
a
Explanation:
because it has more energy 
 
        
                    
             
        
        
        
Answer:
D. Newton's second law
Explanation:
 Newton's second law of motion states that force of an object is a product of its mass and its acceleration.
Mathematically, F= ma where  m is mass and a is acceleration
So from the statement above : The acceleration of an object is proportional to the force applied to it and  inversely proportional to its mass , it can be seen from the formula variation as;
F= ma -----making a the subject of the formula
a= F/ m 
a= 1/m * F --------- a  is inversely related to m  as you can see from 1/m but directly related to F  hence;
Increase in mass with the same force applied causes the body to accelerate slower where as when force increases, the body accelerates faster.
 
        
             
        
        
        
Answer:
(a)11.24 m/s
(b)7.44 m/s
(c)409 N
(d)
(e) 0
Explanation:
The period for 1 circle  of the merry go around is 9.5s. It means the angular speed is:
 of the merry go around is 9.5s. It means the angular speed is:

(a)The speed is

(b) Centripetal acceleration:

(c) Magnitude of the force that keeps you go around at this acceleration

(d) let the coefficient of friction by  . The frictional force shall be this coefficient multiplied by normal force reverting gravity of the man
. The frictional force shall be this coefficient multiplied by normal force reverting gravity of the man

 
        
             
        
        
        
Removing an electron from a neutral atom will result in an atom that is positive.