In a house the temperature at the surface of a window is 25 degreescelsius. The temperature outside at the window surface is 5.0degrees celsius. Heat is lost through the window viaconduction, and the heat lost per second has a certain value. The temperature outside begins to fall, while the conditions insidethe house remain the same. As a result, the heat lost persecond increases. What is the temperature at the outside window surface when the heat lost per second doubles?