(घ) n-p-n ट्राँजिस्टर की उभयनिष्ठ उत्सर्जक की प्रवर्धन क्रिया का परिपथ चित्र बनाकर वोल्टेज लाभ का सूत्र प्राप्त कीजिए।
3​

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Where do magnetic lines of force enter earth?

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