Constants and Conclusions

考纲要求

• Use gradient and y-intercept expressions to calculate constants
• Include correct units
• Propagate uncertainties to final answers
• Draw conclusions from experimental data
• Make predictions and determine values

常见题型

• One Constant from Gradient — 从 gradient 求常数
• Two Constants from Gradient and Intercept — 同时从 gradient 和 intercept 求两个常数
• Extension Calculations — 用已求常数进一步计算
• Drawing Conclusions — 实验结果分析与结论

核心流程

• Gradient expression $\rightarrow$ calculate constant 1
• y-intercept expression $\rightarrow$ calculate constant 2
• Check units are dimensionally correct
• Find uncertainty using error propagation

常见错误

• 忘记在常数后加单位
• 公式代入时符号错误（特别是负号）
• 未使用题目给的已知值（如 $k = 1.38 \times 10^{-23}$）