Achild (approximately 4 years old) takes her metal “slinky toy” (a flexible coiled metal spring) and does various tests to determine that the slinky has an inductance 130 µh, when it has been stretched to a length of 3 m. the permeability of free space is 4π × 10−7 n/a 2 . if a slinky has a radius of 4 cm, what is the total number of turns in the slinky?

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

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