A.图甲:筷子“断”为两截,说明光线从一种物质斜射入另一种物质时发生折射 |
B.图乙:小球向下摆动过程中速度变大,说明小球位置越低动能越大,机械能越大 |
C.图丙:红墨水在热水中扩散得快,说明温度越高分子无规则运动越剧烈 |
D.图丁:向小船中间的水域冲水时,两小船相互靠近,说明液体流速越大的地方压强越小 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2