📚 AQA Physics A-Level Unit 5 January 2022 | AQA 物理 A-Level 第五单元(2022年1月)
The January 2022 AQA Physics Unit 5 (PHYA5) paper assesses two core areas — Thermal Physics and Nuclear Physics — alongside an optional topic such as Astrophysics or Medical Physics. This revision guide breaks down every major topic, the typical question types, and the common pitfalls students must avoid.
2022年1月 AQA 物理第五单元(PHYA5)试卷考查两大核心板块——热物理学与核物理学——并附加一个选修主题,如天体物理学或医学物理学。本复习指南将逐一拆解所有重点考点、典型题型以及学生需要避开的常见陷阱。
1. Paper Structure | 试卷结构
PHYA5 lasts 1 hour 45 minutes and is worth 100 marks. Section A (75 marks) covers Nuclear and Thermal Physics in short-answer and extended-essay questions. Section B (25 marks) contains one optional topic: Astrophysics, Medical Physics, or Applied Physics.
PHYA5 考试时长为1小时45分钟,满分100分。A部分(75分)考查核物理学与热物理学,题型包括简答题与拓展写作题。B部分(25分)包含一个选修主题:天体物理学、医学物理学或应用物理学。
There is no formula sheet — you must recall all equations such as pV = NkT, λ = ln 2/T½ and ΔE = Δmc² from memory. The paper rewards precise definitions and clear use of standard symbols.
考试不提供公式表——你必须凭记忆写出所有方程,例如 pV = NkT、λ = ln 2/T½ 以及 ΔE = Δmc²。试卷注重精确定义以及标准符号的清晰使用。
2. Specific Heat & Latent Heat | 比热容与潜热
The energy ΔQ required to raise the temperature of mass m by Δθ is given by ΔQ = mcΔθ, where c is the specific heat capacity in J kg⁻¹ K⁻¹. When material changes state at constant temperature, the energy is ΔQ = ml, where l is the specific latent heat of fusion or vapourisation.
将质量为 m 的物体温度升高 Δθ 所需的能量为 ΔQ = mcΔθ,其中 c 为比热容,单位为 J kg⁻¹ K⁻¹。当物质在恒温下发生相变时,能量为 ΔQ = ml,其中 l 为熔化潜热或汽化潜热。
A common experiment involves measuring the power P supplied to an immersion heater:
常见实验涉及测量浸入式加热器的功率 P:
P × t = mcΔθ + ml
Published by TutorHao | Physics Revision Series | aleveler.com更多咨询请联系16621398022(同微信)
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导,国外大学本科硕士研究生博士课程论文辅导