172205 A standing wave propagating with velocity 300 $\mathrm{m} / \mathrm{s}$ in an open pipe of length $4 \mathrm{~m}$ has four nodes. The frequency of the wave is

172206 The velocity $\vec{v}$ of a particle of mass ' $m$ ' acted upon by a constant force is given by $\overrightarrow{\mathrm{v}}(\mathrm{t})=\mathrm{A}[\cos (\mathrm{kt}) \overline{\mathrm{i}}-\sin (\mathrm{kt}) \overline{\mathrm{j}}]$. Then the angle
between the force and the velocity of the particle is (Here $A$ and $k$ are constants)

172207 The path difference between the two waves represented by $x_{1}=4 \sin \left(\omega t-\frac{2 \pi x}{\lambda}\right)$ and $x_{2}=3 \cos \left(\omega t-\frac{2 \pi x}{\lambda}-\phi+\frac{\pi}{2}\right)$

172159 A stationary wave is represented by $y=10 \sin \frac{\pi x}{4} \cos 20 \pi t$ where ' $x$ ' and ' $y$ ' are expressed in $\mathrm{cm}$ and ' $t$ ' in second. Distance between two consecutive nodes is

172205 A standing wave propagating with velocity 300 $\mathrm{m} / \mathrm{s}$ in an open pipe of length $4 \mathrm{~m}$ has four nodes. The frequency of the wave is

172206 The velocity $\vec{v}$ of a particle of mass ' $m$ ' acted upon by a constant force is given by $\overrightarrow{\mathrm{v}}(\mathrm{t})=\mathrm{A}[\cos (\mathrm{kt}) \overline{\mathrm{i}}-\sin (\mathrm{kt}) \overline{\mathrm{j}}]$. Then the angle
between the force and the velocity of the particle is (Here $A$ and $k$ are constants)

172207 The path difference between the two waves represented by $x_{1}=4 \sin \left(\omega t-\frac{2 \pi x}{\lambda}\right)$ and $x_{2}=3 \cos \left(\omega t-\frac{2 \pi x}{\lambda}-\phi+\frac{\pi}{2}\right)$

172159 A stationary wave is represented by $y=10 \sin \frac{\pi x}{4} \cos 20 \pi t$ where ' $x$ ' and ' $y$ ' are expressed in $\mathrm{cm}$ and ' $t$ ' in second. Distance between two consecutive nodes is

172205 A standing wave propagating with velocity 300 $\mathrm{m} / \mathrm{s}$ in an open pipe of length $4 \mathrm{~m}$ has four nodes. The frequency of the wave is

172206 The velocity $\vec{v}$ of a particle of mass ' $m$ ' acted upon by a constant force is given by $\overrightarrow{\mathrm{v}}(\mathrm{t})=\mathrm{A}[\cos (\mathrm{kt}) \overline{\mathrm{i}}-\sin (\mathrm{kt}) \overline{\mathrm{j}}]$. Then the angle
between the force and the velocity of the particle is (Here $A$ and $k$ are constants)

172207 The path difference between the two waves represented by $x_{1}=4 \sin \left(\omega t-\frac{2 \pi x}{\lambda}\right)$ and $x_{2}=3 \cos \left(\omega t-\frac{2 \pi x}{\lambda}-\phi+\frac{\pi}{2}\right)$

172159 A stationary wave is represented by $y=10 \sin \frac{\pi x}{4} \cos 20 \pi t$ where ' $x$ ' and ' $y$ ' are expressed in $\mathrm{cm}$ and ' $t$ ' in second. Distance between two consecutive nodes is

172205 A standing wave propagating with velocity 300 $\mathrm{m} / \mathrm{s}$ in an open pipe of length $4 \mathrm{~m}$ has four nodes. The frequency of the wave is

172206 The velocity $\vec{v}$ of a particle of mass ' $m$ ' acted upon by a constant force is given by $\overrightarrow{\mathrm{v}}(\mathrm{t})=\mathrm{A}[\cos (\mathrm{kt}) \overline{\mathrm{i}}-\sin (\mathrm{kt}) \overline{\mathrm{j}}]$. Then the angle
between the force and the velocity of the particle is (Here $A$ and $k$ are constants)

172207 The path difference between the two waves represented by $x_{1}=4 \sin \left(\omega t-\frac{2 \pi x}{\lambda}\right)$ and $x_{2}=3 \cos \left(\omega t-\frac{2 \pi x}{\lambda}-\phi+\frac{\pi}{2}\right)$

172159 A stationary wave is represented by $y=10 \sin \frac{\pi x}{4} \cos 20 \pi t$ where ' $x$ ' and ' $y$ ' are expressed in $\mathrm{cm}$ and ' $t$ ' in second. Distance between two consecutive nodes is