Apillow with mass of 0.3 kg sits on a bed with a coefficient of static friction of 0.6. what is the maximum force of static friction?

The maximum force of static friction is the product of normal force (P) and the coefficient of static friction (c). In a flat surface, normal force is equal to the weight (W) of the body. 
 
                        P = W = mass x acceleration due to gravity
    
                    P = (0.3 kg) x (9.8 m/s²) = 2.94 kg m/s² = 2.94 N

Solving for the static friction force (F), 
                                              F = P x c 
 
                                      F = (2.94 N) x 0.6 = 1.794 N

Therefore, the maximum force of static friction is 1.794 N. 

Hey hope you get the answer but i suck at math sorry : (

The answer is b.the gaseous state is electrically positive, while the plasma state is electrically negative.