You are the maker of a bubble blowing machine. Recent client feedback has suggested that your bubbles are currently too small . Your new bubble mixture needs to produce bubbles of 2.0 times the radius of the previous bubbles. The machine will make sure the pressure inside is the same as before. If the previous mixture had a surface tension of 2.5 x 10-3 N/m, what must the surface tension of the new mixture be? You may consider the bubble thickness to be negligible. Give your answer in N/m x 10-3 to 2 decimal places