Determine the hardness of each unknown mineral from the data given. Deep scratch by fluorite.

-greater than 4
-4
-must be 1, 2, or 3

How would a small bar magnet be oriented when placed at position x?

Which atomic model was proposed as a result of j. j. thomson’s work?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?