A 3.53 kg piece of material is heated from 19.3oC to 238oC using 609 kJ of energy. Assuming an efficiency of 0.346 for the heating process, calculate the specific heat capacity of the material.

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Explanation:

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.