When the north pole of a bar magnet is moved into a solenoid, the needle on a galvanometer attached to the solenoid moves to the left, indicating that a current is produced. the magnet is then pulled out at a faster speed. what will be the result? a) a larger current in the same direction b) a larger current in the opposite direction c) a smaller current in the same direction d) a smaller current in the opposite direction.

B.) a larger current in the opposite direction.

Explanation:

When a magnet is placed close to the solenoid electricity is induced, when the magnet moves towards the solenoid the current induced is of a positive value though very little and can only be measured by a galvanometer (a device for measuring small charges).

When the magnet is withdrawn in the opposite direction at a higher speed, a negative charge of a higher magnitude is produced in the solenoid and galvanometer moves in the opposite direction.

(B ) a large current in the opposite direction

Explanation:

When the magnet is pulled out at a faster speed the north pole becomes the south pole which tries to hold the magnet back. The induced current oppose the motion that induces it from Lenz law of electromagnetic induction. This makes the pointer to deflect in the opposite direction.

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 .

it is b. absorbs thermal energy