Anew technology company is marketing drones for residential use. the bar graph shows the relation between number of sales and three types of marketing strategies over the company’s first five months of operation. what are the two biggest advantages of using a bar graph to display this kind of data?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?