A negative charge of -0.510 μC exerts an upward 0.700-N force onan unknown charge that is located 0.300 m directly below the firstcharge.
Part A
What is the value of the unknown charge (magnitude and sign)?Express your answer with the appropriate units.
Part B
What is the magnitude of the force that the unknown chargeexerts on the -0.510 μC charge? Express your answer with theappropriate units.
Part C
What is the direction of this force? - upward - downward
