This is a model for the effect of distance on the strength of a gravitational field. The thickness of the layer resembles the gravitational force and the distance between the sprayer and the canvas resembles the distance between the two massive objects. a The paint sprayer can spraypaint a 1 mm thick layer on a canvas from a distance (r) of 1 meter. If the distance is doubled, what will the thickness of the layer of paint be?
0.25 mm
2 mm
4 mm
0.5 mm
