Super fine 40-gauge copper wire has a diameter of only 0.080
mm

and weighs only
44.5
/
g
km

. Suppose a spool of 40-gauge wire weighs
375.
g

less after some wire is pulled off to wind a magnet. How could you calculate how much wire was used?
Set the math up. But don't do any of it. Just leave your answer as a math expression.
Also, be sure your answer includes all the correct unit symbols.

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges