Attenuation is the correct answer. 
        
             
        
        
        
Ans) A) Centripetal force will be doubled.
See centripetal force F = mv^2/r
That means centripetal force is directly proportional to the mass of the particle
So, if we double the mass, centripetal force will be increased by twofolds.
So, option A) is correct.
Now, looking at the other options, 
B) says centripetal force is unaltered which is incorrect as centripetal force has been altered and increased twofold.
Option C) and D) reduces centripetal force which are also not possible here.
So, only Option A) is correct
 
        
             
        
        
        
Answer:
19.01 N
Explanation:
F = Force being applied to the crate = 45 N
 = Angle at which the force is being applied =
 = Angle at which the force is being applied = 
Horizontal component of force is given by

The horizontal component of the force acting on the crate is 19.01 N.
 
        
             
        
        
        
ohm's law V=IR
V=24x11=240+24=264V
About mains and dangerous needs insulating