I'm pretty sure that it is 140. Hope I helped!
To determine the answer of Part A draw the equilateral triangle and the to determine the coordinates of of the third charge use that triangle.
To calculate the gravitational field strength in part B from each of the charges use the following equation.
E=kcq/r2
If you would add those values then you can use the symmetry about the y axis to make the vector addition a litter easier.<span />
Four is greater than y, and -1 is less than y
Answer:
The first one (A) is the answer I got!
Step-by-step explanation:
Division and multiplication
