Define kinetic energy and thermal energy. describe what happens to each as the temperature of the substances increases

Kinetic energy is the amount of energy a object has while it's in motion, and thermal energy is heat energy. In this case when the heat rises in substances for example a solid it will transform into a liquid causing the molecules to move faster which is a increase of kinetic energy. So the answer is "when the heat in substances increase the kinetic energy increases."

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t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanatio

what is the question because that is not a question.