导体代号 | a | b | c | d | e |
导体长度L/m | 1.5 | 0.5 | 1.0 | 1.0 | 1.5 |
导体横截面积S/mm2 | 1.2 | 1.2 | 0.8 | 1.2 | 2.0 |
导体材料 | 镍铬 | 镍铬 | 镍铬 | 锰铜 | 镍铬 |
入射角 | 10° | 30° | 45° | 60° |
折射角 | 7.1° | 20.7° | 30° | 37.8° |
物体 | 物重G/N | 物体浸没在水中测力计的示数F/N | 浮力 | 空桶重 | 桶与排开水的总重 | 排开水重 |
a | 1.2 | 0.7 | 0.5 | 0.6 | 1.1 | 0.5 |
b | 2 | 1.4 | 0.6 | 0.6 | 1.2 | 0.6 |
c | 2.4 | 1.7 | 0.7 | 0.6 | 1.2 | 0.6 |
分析表中物体a、b的实验数据,小李得出的结论是:;