几种物质中的声速v/(m/s)
空气(15oC) | 340 | 海水(25oC) | 1531 |
空气(25oC) | 346 | 铜(棒) | 3750 |
空气(35oC) | 352 | 大理石 | 3810 |
煤油(25oC) | 1324 | 铝(棒) | 5000 |
蒸馏水(25oC) | 1497 | 铁(棒) | 5200 |
(2)影响声速大小的因素:
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