The accompanying photo shows a pipevine swallowtail caterpillar climbing up a twig. (a) As the caterpillar climbs, its potential energy is increasing. What source of energy has been used to effect this change in potential energy?
Ch.5 - Thermochemistry
5장, 문제 5a
Imagine that you are climbing a mountain. (a) Is the distance you travel to the top a state function?
검증된 단계별 안내1
Understand the concept of a state function: A state function is a property whose value does not depend on the path taken to reach that specific value. Common examples include internal energy, enthalpy, and entropy.
Consider the nature of distance: Distance is a measure of the total path traveled between two points.
Analyze if the distance depends on the path: Since the distance you travel can vary depending on the route you take up the mountain, it is dependent on the path taken.
Compare distance with state functions: Contrast this with state functions where the change in value is the same regardless of the path taken between two states.
Conclude whether distance is a state function: Based on the dependency on the path, determine if distance qualifies as a state function or not.

비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
State Functions
State functions are properties that depend only on the current state of a system, not on the path taken to reach that state. Examples include temperature, pressure, and enthalpy. In the context of climbing a mountain, a state function would be the elevation at the top, which does not change regardless of the route taken.
추천 영상:
가이드 코스
Logarithmic Functions
Path Functions
Path functions are properties that depend on the specific path taken to reach a particular state. Work and heat are classic examples of path functions, as they vary based on the process used. In the mountain climbing scenario, the distance traveled to the top is a path function because it can differ based on the route chosen.
추천 영상:
가이드 코스
Logarithmic Functions
Thermodynamic Principles
Thermodynamic principles govern the relationships between energy, work, and heat in physical systems. Understanding these principles helps differentiate between state and path functions. In the mountain analogy, recognizing that the elevation (a state function) is independent of the distance traveled (a path function) illustrates how these principles apply to real-world scenarios.
추천 영상:
가이드 코스
First Law of Thermodynamics
관련 실천
교과서 질문
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교과서 질문
The contents of the closed box in each of the following illustrations represent a system, and the arrows show the changes to the system during some process. The lengths of the arrows represent the relative magnitudes of q and w. (a) Which of these processes is endothermic?
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교과서 질문
Consider the accompanying energy diagram. (a) Does this
diagram represent an increase or decrease in the internal energy
of the system?
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교과서 질문
The diagram shows four states of a system, each with different internal energy, E. (a) Which of the states of the system has the greatest internal energy?
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교과서 질문
Imagine that you are climbing a mountain. (b) Is the change in elevation between your base camp and the peak a state function?
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