Answer:
Explanation:
Acceleration of particle A is 7.3 times the acceleration of particle B. 
Let the acceleration of particle B is a, then the acceleration of particle A is 
7.3 a. 
Let the period of particle A is T and the period of particle B is 2.5 T. 
Let the radius of particle A is RA and the radius of particle B is RB. 
Use the formula for the centripetal force 

So, 
The ratio of radius of A to the radius of B is given by 


RA : RB = 1.17
 
        
                    
             
        
        
        
Hammer and screwdriver perform different tasks because they are both simple machines.
A machine is simply a device that can be used to perform a task. This  machine can be any physical system or device designed to perform a specific task.
The efficiency of the machine describes the easy with which each machine or tool is able to use input power to overcome a task.
Machines are designed to overcome a particular task with little effort in order to increase its efficiency.
Hammer and screwdriver, are both examples of simple machines.
Thus, Hammer and screwdriver perform different tasks because they are both simple machines.
Learn more here: brainly.com/question/21387235
 
        
             
        
        
        
In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth. Electrical circuits may be connected to ground (earth) for several reasons.