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Which action best demonstrates the transformation of mechanical energy to heat energy and sound energy?1)stretching a string 2)squeezing a sponge ball 3)throwing a ball upwards in air 4)striking a hammer on a nail |
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Answer» Answer: 4. Striking a hammer on a nail Explanation: A tremendous amount of FORCE is applied over a SMALL area to generate very high stresses that are in the plastic zone. a high amount of thermal energy is generated and the LOCALISED disturbance of the air generates audible SOUND |
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