5 pontos 1. O fluxo de calor através de um
bloco de madeira de espessura 5cm
cujas temperaturas interna e
externa são 40°C e 20°C,
respectivamente, foi determinado
com o valor de 40W/m2. Determine
a condutividade térmica da
madeira. *

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

How is zig zagging a form of acceleration?

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?