A waitress shoves a ketchup bottle with mass 0. 45 kg to her right along a smooth, level lunch counter. The bottle leaves her hand moving at 2. 5 m/sec then slows down as it slides because of a constant horizontal friction force exerted on it by the countertop. It slides for 1. 0 m before coming to rest. What is the magnitude of the friction force acting on the bottle?

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How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

This graph represents four ecosystems. each ecosystem has a different number of species, adding to its biodiversity. different colors represent different species. which statements correctly summarize the data depicted by the graph? 1. ecosystem d has more biodiversity than ecosystem c. 2. ecosystem b has more biodiversity than all the other ecosystems. 3. ecosystem a has more biodiversity than ecosystem b but less biodiversity than ecosystem c. 4. ecosystem b has more biodiversity than ecosystems c and d but less biodiversity than ecosystem a. 5. ecosystem a has more biodiversity than ecosystem c but less biodiversity than ecosystem b.