1. How much heat is required to raise the temperature of 57.8kg of silver from 17.0°C to 43.5°C if the specific heat of silver is 57.0 J/kg°C?
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Solved

Explanation is in the file

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i just did this and got a 100.

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