If the strength of the magnetic field at a is 48 units and the strength of the magnetic field at b is 3 units, what is the distance to b? (drawing is not to scale! )

This is the formula to calculate the distance:
Force (F)= charge (q) * velocity (v) * field strength (B)

In the end, you get 20 units, which should be the correct answer.

Hello how was your day? ? i hope it was good

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.