6. A 2 kg box is submerged under water. Archimedes' Principle a. Calculate its weight above the water. b. Calculate its apparent weight when its submerged, if it displaced 0.5 kg of water.

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What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.