Calculate the rate of heat conduction (w) through house walls that are 13.0 cm thick and that have an average thermal conductivity twice that of glass wool. assume there are no windows or doors. the surface area of the walls is 120 m2 and their inside surface is at 18.00c, while their outside surface is at 5.000c .

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

Which of the following list the divisions of the geologic time scale in order from longest to shortest

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.