Abar of brass is used to conduct heat between two heat reservoirs at temperatures of 20 degrees c and 80 degrees c. the bar has a square cross section with edge 1.0 cm. the length of the bar is 70 cm. what is the rate of thermal conductivity?

1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system