22higlebosa
21.09.2021 •
Physics
Why is respiration considered a chemical change?
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Ответ:
In the oxidation of glucose, carbon dioxide and water are formed. As new products are formed of different composition and characteristics, the respiration is considered as a chemical change.
Explanation:
hope that works
Ответ:
Because the oxidation of glucose turns into carbon dioxide and water as a result of respiration. CO2 and H2O form as the final products and cannot change back into glucose, therefore it's a chemical change.
Ответ:
You will find that the force applied (1.0 N) equals the resistive force (the weight of the object). Then the resistive force = 1.0 N
2) Work = force * parallel distance ==> force = Work / parallel distance
Force = 5000 J / 100.0 m = 50 N
Force = mass * acceleration
Then to find the mass you need the acceleration. Given that there is not data to find the acceleration this part has not solution.
3) The answer is C. Man is increasing KE of lawn mower.
Explanation: KE = Kinetic energy, is proportional to velocity.
Given that initially the lawn mower is standing, its initial KE is zero. When it is moving the KE is greater than zero.