/sci/ - Science & Math

This might look like high school physics but it actually is med school physics

5 meters deep in a recipient full of a liquid of unknown density, there is an object of volume 8 mL and mass 2kg, tied with a rope to the bottom of the recipient. The buoyancy is 23.52 N
1. Determine the density of the liquid (R: 300kg/m3) -shouldn’t it be 300.000? (because 1 ml is 1e-6 m3, not 1e-3)
2. The rope is cut. Determine the depth of the object after 2.5 seconds. (R: 1.4m)  pretty sure it has already reached the surface and is floating at that point. After the rope is cut, there is only (no friction) buoyancy and weight, buoyancy going upwards and being 23.52 and weitght going downwards and being 19,6. Net force is 3,92, thus acceleration 1,96 m/s2 (positive), initial speed is 0. I used -5 m as the starting height
3. After an infinite amount of time, the object is floating in the recipient in a rest state. What is the percentage of the object (volume) that is submerged in the liquid? (R: 83,33%)  I don’t see the problem here