A .183 kg ball is moving 18.8 m/s when it runs into a spring of spring constant 86.9 N/m. How much KE does the ball have when it has compressed the spring 0.520 m? (Unit=J)

The value is  

Explanation:

From the question we are told that

   The mass of the ball is  

   The initial  speed of the ball is  

    The spring constant is  

     The compression distance is  

Generally the energy stored in the string is mathematically represented as

=>    

=>      

Generally the kinetic energy of the ball is mathematically represented as

=>      

Generally the KE   the ball have when it has compressed the spring is mathematically represented as

=>        

=>        

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia