Question: 4 . 2 3 - Boxes A and B are in contact on a horizontal, frictionless surface. Box A has mass of 2 0 .

4.23- Boxes A and B are in contact on a horizontal, frictionless surface. Box A has mass of 20.0kg and box B has mass 5.0kg. A horizontal force of 250 N is exerted on box A. What is the magnitude of the force that box A exerts on B?

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