This is a characteristic of a Thermosetting polymer.
Answer:
The first one is mechanical, second is chemical and, the third is chemical.
Explanation:
Well acid is a chemical, and water is a chemical compound. The roots are mechanical since it is not a chemical. Mechanical side of things is like you breaking up a sidewalk.
Answer:Naoh and animal fats
Explanation:
Also perfume along with ones desire
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Correct answer is 20 kJ; 50 kJ
potential energy is resting energy, that peak that's 75 kJ would be the kinetic energy
