PLEASE HELP ME WITH ONE QUESTION If 1000 J of heat energy is lost from a piece of hot metal which is placed into a cup of cool water, how much energy is gained by the water?

1000J

Explanation:

According to the law of calorimetry;

Heat lost by cold substance = Heat gained by hot substance

If 1000 J of heat energy is lost from a piece of hot metal,

heat lost by hot substance = 1000J

Since we are to determine how much energy is gained by the water, using the law

Heat lost by hot metal = heat gained by the water

Hence heat gained by the water = 1000J

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

this is poiselle's equation from fluid mechanic in physics. mech eng