A long, current-carrying solenoid with an air core has 1800 turns per meter of length and a radius of 0.0165 m. A coil of 210 turns is wrapped tightly around the outside of the solenoid, so it has virtually the same radius as the solenoid. What is the mutual inductance of this system

The mutual inductance is  

Explanation:

From the question we  are told that

    The  number of turns per unit length  is  

    The radius is  

     The  number of turns of the solenoid is  

Generally the mutual inductance of the  system is mathematically represented as

Where A is the cross-sectional area of the system which is mathematically represented as

substituting values

also   is the permeability of free space with the value  

So  

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

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okay, ima .

um it shows links to uh so kinda microsoft website is that were ima go or no? ?