Spring Scale and weight of Plastic bottles

Question 1

In the lab, we poured four liquids down a ramp and timed how long it took for each to reach the bottom, showing their flow rates and thickness. Thinner liquids were faster, thicker ones slower. By analyzing our data, we compared liquid viscosities and discussed differences. Overall, the lab helped us understand how liquids vary in thickness and flow. Regarding buoyancy, a plastic bottle filled with air floats because it’s less dense than water (positively buoyant). But if filled with sand, it sinks because it becomes denser than water (negatively buoyant). That’s why an air-filled bottle floats like a buoy and a sand-filled one sinks like an anchor.

Answer 1

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