An exterior wall of a house may be approximated by a 4-in layer of common brick (k 0 followed by a 1.5 in layer of gypsum plaster (k 0.48 w/m c). what thickness of loosely packed rock- wool insulation (k 0.065 w/m c) should be added to reduce the heat loss through the wall by 80 percent?

    5.5 n======    assuming that      we have      m = 0.145 kg    a = 38 m/s²therefore    5.51 n, but two significant figures.final answer: 5.5 n

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.