Explain this!

Here is an experiment

Various materials of the same mass (500g) are crushed, placed in a boil in the bag bag and placed in boiling water until they have reached equilibrium. They are they removed rapidly and placed into a beaker with a known volume of water and a known temperature. The highest temperature they reach is recorded.

Describe what will happen to the temperature of the beakers when the bags are placed in them.

Why are the bags left in the boiling water for a long time?

Why must you be quick moving the bags into the beakers of water at room temperature?

What would happen if water got trapped in the top of the bag when moving them?

Why are the materials crushed and not a solid lump?

Could this be used to find a value for the specific heat capacity? If so, how.