(1)如果要研究摆的快慢是否与摆长有关,实验时需要改变的条件是
(2)如果要研究摆的快慢与摆锤重量的关系,实验时需要改变的条件是
(3)通过实验,我们知道,摆的快慢与
(4)如果②号摆现在的摆动次数是每分钟50次,要让它成为一个每分钟摆30次的摆,可以让②号摆的摆绳变
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