Part A (Figure 1) shows five electric charges. Four charges with the magnitude of the charge 2.0 nC form a square with the size a = 1.0 cm. Positive charge with the magnitude of q = 7.0 nC is placed in the center of the square. What is the magnitude of the force on the 7.0 nC charge in the middle of the figure due to the four other charges? Express your answer with the appropriate units. Figure y -2.0 nC a 2.0 nC + q + -2.0 nC 2.0 nC 1 of 1 μÅ ? Fon q = Value Units Submit Previous Answers Request Answer × Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the force on the 7.0 nC charge in the middle of the figure due to the four other charges? Express your answer in degrees to two significant figures. x 0 = ΕΠΙ ΑΣΦ Submit Request Answer ? °, counterclockwise from the positive x-axis

Part A (Figure 1) shows five electric charges. Four charges with the magnitude of the charge 2.0 nC form a square with the size a = 1.0 cm. Positive charge with the magnitude of q = 7.0 nC is placed in the center of the square. What is the magnitude of the force on the 7.0 nC charge in the middle of the figure due to the four other charges? Express your answer with the appropriate units. Figure y -2.0 nC a 2.0 nC + q + -2.0 nC 2.0 nC 1 of 1 μÅ ? Fon q = Value Units Submit Previous Answers Request Answer × Incorrect; Try Again; 4 attempts remaining Part B What is the direction of the force on the 7.0 nC charge in the middle of the figure due to the four other charges? Express your answer in degrees to two significant figures. x 0 = ΕΠΙ ΑΣΦ Submit Request Answer ? °, counterclockwise from the positive x-axis