📚 Mastering Applied Physics Questions with the PH02 Insert | 利用PH02附加材料攻克物理应用题
In the International Physics AS examination (PH02), you are provided with an Insert booklet containing reference data, formulae, and conversion factors. Many students overlook its potential, treating it merely as a last-resort lookup. This article will teach you how to integrate the Insert proactively into your problem-solving workflow, turning it into a powerful tool for tackling applied questions with speed and accuracy.
在国际物理AS考试（PH02）中，你会得到一本包含参考数据、公式和换算因素的附加材料（Insert）。许多学生忽视了它的潜力，只把它当作最后查阅的工具。这篇文章将教你如何主动将Insert融入解题流程，把它变成快速、准确解决应用题的强大工具。
1. Understanding the Insert | 理解附加材料
The PH02-INS is not a random collection of facts; it is deliberately structured to support the syllabus. It typically includes fundamental constants, common mechanics and materials formulae, electrical equations, wave relationships, and sometimes particle physics data. Familiarise yourself with its layout before the exam so you can locate any item within seconds.
PH02的Insert不是随意的事实堆砌，而是有意识地依据考纲编排的。它通常包括基本常数、常见力学和材料公式、电学方程、波动关系，有时还有粒子物理数据。考前熟悉它的布局，这样你就能在几秒钟内找到任何所需项目。
2. Locating Key Equations | 查找关键公式
The Insert organises equations by topic: for example, ‘Mechanics’ might list v = u + at, s = ut + ½at², and F = ma. When solving an applied question, first identify the topic, then scan the Insert for the relevant formula. Avoid relying on memory alone; checking the Insert ensures you use the exact version given, which often includes the symbols the exam expects.
Insert按主题组织方程：比如“力学”下可能列出 v = u + at、s = ut + ½at² 和 F = ma。解应用题时，先确定主题，然后扫读Insert找到相关公式。不要仅凭记忆；核对Insert可确保你使用的是考试期望的精确版本，通常包含所期望的符号。
3. Interpreting Physical Constants | 解读物理常量
The Insert provides constants such as g = 9.81 N kg⁻¹, c = 3.00 × 10⁸ m s⁻¹, and ε₀ = 8.85 × 10⁻¹² F m⁻¹. Pay attention to the units and the number of significant figures given. In applied problems, you are often required to use these values to calculate other quantities, so copying them correctly from the Insert is vital.
Insert提供了如 g = 9.81 N kg⁻¹、c = 3.00 × 10⁸ m s⁻¹ 和 ε₀ = 8.85 × 10⁻¹² F m⁻¹ 等常数。注意单位及给出的有效数字位数。在应用题中，你通常需要用这些值计算其他量，因此从Insert中准确抄写它们至关重要。
4. Unit Conversions Made Easy | 轻松进行单位换算
Conversion factors for non-SI units (e.g., 1 eV = 1.60 × 10⁻¹⁹ J, 1 u = 1.66 × 10⁻²⁷ kg) are included. When an applied question mixes units (e.g., energy in eV and wavelength in nm), use the Insert to convert everything into SI before applying equations. This prevents unit mismatch errors and keeps calculations tidy.
非国际单位制的换算系数（如 1 eV = 1.60 × 10⁻¹⁹ J、1 u = 1.66 × 10⁻²⁷ kg）也包含在内。当应用题混合单位时（例如能量用eV，波长用nm），使用Insert将所有量先转换为国际单位再套用方程。这可以避免单位不匹配的错误，并使计算保持整洁。
5. Using Data Tables and Graphs | 利用数据表和图表
Some questions will refer directly to a table or graph in the Insert. For instance, you might be asked to determine the resistivity of a material from a given table of values. Always read the headings, axis labels, and units carefully. If a graph is provided, the Insert may also contain the gradient or intercept formula, which is often needed to extract physical quantities.
有些问题会直接引用Insert中的表格或图表。例如，你可能被要求从给出的数值表中确定某种材料的电阻率。务必仔细阅读标题、坐标轴标签和单位。若提供了图，Insert中可能也包含梯度或截距公式，这常常是用来提取物理量所必需的。
6. Recognising Symbols and Notation | 识别符号和记法
The Insert defines all symbols used. For example, A may stand for area, activity, or nucleon number depending on the section. In applied contexts, the question might use a different letter than you’re used to; always cross-reference with the Insert to avoid misinterpreting variables. This is especially important in electricity and particle physics sections.
Insert会定义所有使用的符号。例如，A 可能代表面积、活度或核子数，取决于所属部分。在应用情境中，题目可能用与你习惯不同的字母；务必与Insert交叉核对，避免误解变量。这在电学和粒子物理部分尤为重要。
7. Linking Given Information to Questions | 将给定信息与问题联系起来
Applied questions typically present a scenario with numerical data. Your first step should be to list the known quantities, then scan the Insert for equations that connect them to the unknown. For example, if you are given mass, velocity, and time, look for an impulse or momentum equation. The Insert acts as a bridge between the scenario and the solution.
应用题通常会给出一个带有数值数据的场景。你的第一步应列出已知量，然后扫读Insert找出连接它们与未知量的方程。例如，如果已知质量、速度和时间，就去寻找冲量或动量方程。Insert充当了场景与解答之间的桥梁。
8. Applying Insert in Multi-Step Problems | 在多步骤问题中应用Insert
Complex questions require chaining several formulae. You might first find acceleration using a kinematic equation from the Insert, then use F = ma to find force. Keep the Insert open at the relevant page; do not try to recall secondary equations from memory. This reduces the risk of using an incorrect form of the equation and saves brainpower for the analytical part of the problem.
复杂问题需要串联多个公式。你可能先用Insert中的运动学方程求出加速度，再用 F = ma 求力。保持Insert打开在相关页面上；不要试图回忆次级方程。这降低了使用错误方程形式的危险，并为问题分析部分节省脑力。
9. Avoiding Common Pitfalls | 避免常见陷阱
A frequent mistake is reading a value from the wrong row or column of a data table. Double-check that you are using the correct material or condition. Another pitfall is ignoring the provided prefix or power of ten; the Insert may list resistivity in 10⁻⁸ Ω m, requiring careful multiplication. Always verify the scale before substituting numbers.
一个常见错误是从数据表的错误行或列读取数值。仔细检查你是否使用了正确的材料或条件。另一个陷阱是忽略提供的前缀或10的幂次；Insert可能以 10⁻⁸ Ω m 为单位列出电阻率，需要仔细相乘。代入数字前务必验证标度。
10. Practice Strategies with the Insert | 练习使用Insert的策略
To build familiarity, do past papers with the Insert side by side. Time yourself while deliberately using the Insert for every formula and constant, even those you know. This trains your brain to treat the Insert as a primary resource, not a fallback. After a few sessions, you will find that your speed improves because you spend less time second-guessing your memory.
为了建立熟悉度，做往年试卷时将Insert放在一旁。计时并刻意使用Insert来查找每个公式和常数，即使是你已知的。这能训练你的大脑将Insert视为主要资源而非后备。几次练习后，你会发现速度提高了，因为你减少了质疑记忆的时间。
Published by TutorHao | Physics Revision Series | aleveler.com
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