A negative charge of -0.500 uC exerts an upward 0.700 N force on an unknown charge that is located 0.400 m directly below the first charge. A) What is the value of the unknown charge? (magnitude and sign) B) What is the magnitude of the force that the unknown charge exerts on the -0. 550 uC charge? Express the answer with appropriate units.

A negative charge of -0.500 uC exerts an upward 0.700 N force on an unknown charge that is located 0.400 m directly below the first charge. A) What is the value of the unknown charge? (magnitude and sign) B) What is the magnitude of the force that the unknown charge exerts on the -0. 550 uC charge? Express the answer with appropriate units.

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