Wave Fundamentals & Progressive Waves

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1.
The equation $y = 5\sin(2x - 4t)$ cm represents a wave. Its speed is:
2.
When a wave travels from one medium to another, the quantity that remains unchanged is:
3.
The speed of sound in air at 0 degrees C is 332 m/s. At 273 degrees C, it is approximately:
4.
A wave equation is $y = 3\sin(200t - 0.5x)$. The wavelength is:
5.
The speed of a transverse wave on a string depends on:

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