A wave has the equation (x in meters and t in seconds) y = 0.02sin(30t – 4x). Find its frequency, speed, and length.

A wave has the equation (x in meters and t in seconds) y = 0.02sin(30t - 4x). Find 

1. Its frequency, speed, and wavelength
2. The equation of wave with double the amplitude but traveling in the opposite direction.

What is the principle of superposition of waves? Discuss the result of two superposing waves of equal amplitude and same frequency travelling in the opposite direction.

What is the principle of superposition of waves? Discuss the result of two superposing waves of equal amplitude and same frequency travelling in the opposite direction.

What is a progressive wave? Derive wave equation for a progressive wave.

Define progressive wave. Derive a wave equation representing progressive wave.

Do sound waves undergo reflection, refraction, and polarization phenomena?

Do sound waves undergo reflection, refraction, and polarization phenomena? Explain.

Which types of waves propagate in liquid? Why?

Which types of waves propagate in liquid? Why?

What is the difference between sound waves and light waves?

Distunguish between sound waves and light waves.

A radio station broadcasts at 800 kHz. If the radio waves (em-waves) travel with a speed of 3×10^8 m/s, what will be the wavelength of the wave?

A radio station broadcasts at 800 kHz. If the radio waves (em-waves) travel with a speed of 3x10^8 m/s, what will be the wavelength of the wave?

Why can’t you hear the cracking sound while walking on the moon?

If you are walking on the moon surface, can you hear the cracking sound behind you? Explain.

Why is the frequency the most fundamental property of the wave?

Frequency is most fundamental property of wave. Why?

Why can’t we hear an echo in a small room?

We can't hear echoes in a small room. Why?