Four charges of equal magnitude Q = 65 nC are placed on the corners of a rectangle of sides D1 = 25 cm and D2 = 10 cm. The charges on the left side of the rectangle are positive while the charges on the right side of the rectangle are negative. (The picture is a square with the two left charges on the corners are +Q and two right are -Q, D1 is bottom horizontal line and D2 is left vertical line)
1) calculate the numeric value for the horizontal force in N
2) calculate the numeric value for the vertical force in N
3) calculate the magnitude of the net force on the charge located at the lower left corner of the rectangle in N
4) calculate the angle in degrees that the net force makes with the positive horizontal direction.