The number of electrons is equal to the number of protons.
        
             
        
        
        
Answer:
22 N upward
Explanation:
From the question,
Applying newton's second law of motion
F = m(v-u)/t....................... Equation 1
Where F = Average force exerted by the ground on the ball, m = mass of the baseball, v = final velocity, u = initial velocity, t = time of contact
Note: Let upward be negative and downward be positive
Given: m = 0.14 kg, v = -1.00 m/s, u = 1.2 m/s, t = 0.014 s
Substitute into equation 1
F = 0.14(-1-1.2)/0.014
F = 0.14(-2.2)/0.014
F = 10(-2.2)
F = -22 N
Note the negative sign shows that the force act upward
 
        
             
        
        
        
Answer:
In this reaction, sodium hydroxide (NaOH) disassociates into sodium (Na+) and hydroxide (OH-) ions when dissolved in water, thereby releasing OH- ions into solution. Arrhenius acids are substances which produce hydrogen ions in solution. Arrhenius bases are substances which produce hydroxide ions in solution.
 
        
             
        
        
        
Answer:
Mass of object is 0.5kg 
Explanation:
Given the following data;
Force = 6N
Acceleration = 12m/s²
Mass =? 
Force is given by the multiplication of mass and acceleration. 
Mathematically, Force is;
 
 
Where;
F represents force.
m represents the mass of an object.
a represents acceleration.
Making mass (m) the subject, we have;
  
 
Substituting into the equation;
  
 
Mass, m = 0.5kg.
Therefore, the mass of the object is 0.5kg