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Physics paper 31 , (a death call)

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I think I wrote is a 1.15 m. We got it by the formula P.E=mgh, where P.E is equals to the Kinetic energy previously calculated right?
 
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But guys after evaporation heat is lost right? remember molecules with higher energy escape the surface...and leave behind molecules with lower energy(cooler)?
in evaporation heat is lost from the liquid but the particles that actually changed state have absorbed energy
 
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