the displacement

the length of the pendulum

the mass

the frequency

3000 Hz

3000/2π Hz

0.74/2π Hz

3000/π Hz

always zero

always constant

maximum at amplitude

maximum at the equilibrium position

x= A tan ωt

x= A sin ωt

x= A sin ωt cos kx

x= A sin (ωt ± kx)

91.3 m

8.73 m

-91.3 m

-8.73 m

2:1

1:2

4:1

1:4

44.4 Hz

0.0225 Hz

2,601 Hz

none of these

$\frac{\sin\ i}{\sin\ r}$

$\frac{c}{\sqrt{\mu\epsilon}}$

$\sqrt{\mu\epsilon}$

$\frac{v_{\phi}}{c}$

$n_1\sin\theta_1=n_2\sin\theta_2$

$n=\frac{\sin\ i}{\sin\ r}$

$n=\frac{c}{v}$

$n=\sin\ i$

$\sqrt{\frac{p_0}{\rho}}$

$\frac{\gamma p_0}{\rho_0}$

$\sqrt{\frac{\gamma p_0}{\rho_0}}$

$\sqrt{\frac{kT}{M}}$

$T_0\rho_0$

$\frac{T_0}{\rho_0}$

$\sqrt{\frac{T_0}{\rho_0}}$

$\sqrt{\rho_0T_0}$

Factor of 1000 in intensity

Factor of 1.26 in intensity

Factor of $10^{2.6}$ in intensity

Factor of 10 in intensity

$\frac{\text{d}\omega}{\text{d}k}$

$\frac{\omega}{k}$

$v_0k$

$\sqrt{\frac{T_0}{\rho_0}}$

$\Delta\nu\ \Delta t\approx1$

$\Delta\omega\ \Delta t\approx1$

$\Delta\nu\ \Delta t\approx2\pi$

$\Delta\nu\ \Delta t\ \approx\frac{h}{2\pi}$

2 m

0.5 m

1 m

3.14 m