109 workshop 1 density question
In 109 workshop 1 a lot of you struggled with the density conversion question . So here is a step-by-step approach to this question that might help you... The question: What is the density of mercury (13.6 g cm -3 ) in units of kg m -3 ? First of all, think about what 13.6g c m -3 actually means. This means that in one c m 3 there are 13.6 grams . So this is like saying a cube of mercury with dimensions of 1cm x 1cm x 1cm (around the size of a sugar cube) weighs 1 3.6 grams ! So that is what 13.6g c m -3 means. Now the question wants you to convert the units g c m -3 to kg m -3 . Or, in other words, you need to find out how much a cube of dimensions 1m x 1m x 1m of mercury would weigh in kilograms . So, to start with think about a cube with dimensions 1cm x 1cm x 1cm - this is about the size of a sugar cube. Now think of a cub...