ENGN45_Quiz1-A

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City College of San Francisco *

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45

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Material Science

Date

Dec 6, 2023

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pdf

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8

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Quiz #1 Due No due date Points 10 Questions 10 Time Limit None Allowed Attempts Unlimited Instructions Attempt History Attempt Time Score LATEST Attempt 1 46 minutes 9.33 out of 10 Submitted Jan 20 at 1:47pm This quiz covers the Introduction to Materials and Atomic Bonding. Take the Quiz Again 1 / 1 pts Question 1 Pick the answer which, if put on the end of this sentence, makes it true: The relationship between bonding force and bonding energy for the different types of atomic bonding… is the same for all the types of bonding, both primary and secondary. Correct! Correct! Yes. The bond force curve and the bond energy curve have the same general shape for all types of atomic bonding.
is different for the three types of primary bonding but is the same for all the types of secondary bonding. depends on the types of materials that are being bonded. looks like: E = dF/da is the same for the three types of primary bonding but different for the secondary bonding forces. 1 / 1 pts Question 2 What is Quantum Mechanics? It is a theory that predicts probabilities in situations where classical mechanics predicts certainties. Correct! Correct! It is a set of principles and laws that govern all physical systems; however, it is most relevant for systems of atomic and subatomic entities. Correct! Correct! Correct! Correct!
It is a theory describing physical systems that came about because classical mechanics failed to explain certain phenomenon. It is a theory that addresses the fact that matter has wave-like properties in addition to particle-like properties and the fact that waves have particle-like properties in addition to their wave-like properties. Correct! Correct! All of the answers are correct. 1 / 1 pts Question 3 What is the relationship between the bonding force and the bonding energy of an atomic bond? The force is equal to the derivative of the energy with respect to the separation distance. Correct! Correct! Yes, this is right. The mathematical relationship looks like: F = dE/da The force is always greater than the energy.
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