Two long straight wires enter a room through a window. one carries a current of 3.0 into the room while the other carries a current of 5.0 out. the magnitude in tm of the path integral ∮ ⃗ ∙ around the window frame is:

= -8πx

Explanation:

If you need calculate

You can use the Ampere's Law

= μ

      Where : Current passing through the window

                   μ : Free space’s magnetic permeability

                   μ = 4πx

Then

= (3-5)4πx

= -8πx

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.