Awire with a current of 3.40 a is to be formed into a circular loop of one turn. if the required value of the magnetic field at the center of the loop is 20 µt, what is the required radius?

Find the volume of the ellipsoid x^2+y^2+5z^2=36.

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2

Frequency of electromagnetic waves that a radio station is assigned. what do you call this type of wave?