Current Attempt in Progress In Figure (a), a constant horizontal force Fa is applied to block A, which pushes against block B with a 23.0 N force directed horizontally to the right. In Figure (b), the same force is applied to block B; now block A pushes on block B with a 11.0 N force directed horizontally to the left. The blocks have a combined mass of 13.0 kg. What are the magnitudes of (a) their acceleration in Figure (a) and (b) force F ? A B B A (a) T (b) (a) Number Units (b) Number Units