What is a solenoid? a. a current-carrying sure with many coils b. a current-carrying wire that is straight c. a tool used to measure magnetism d. a tool used to measure current.

A. A current-carrying sure with many coils

Explanation:

A solenoid is a coil that when current passes through a magnatic field if created.

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .