An ocean-depth sounding device emits a signal 38 kHz in water whose av

1.	An ocean-depth sounding device emits a signal 38 kHz in water whose average temperature is 4°C. The impulse is reflected from the ocean bed and returned to the same location 1.62 s after the signal is emitted. Calculate: (i) The depth of the water
Answer» Explanation: The SPEED of sound in WATER depends on the water properties of temperature, salinity and pressure (directly related to the DEPTH). A typical speed of sound in water NEAR the OCEAN surface is about 1520 meters per second. That is more than 4 times faster than the speed of sound in air. The speed of sound in water increases with increasing water temperature, increasing salinity and increasing depth. Most of the change in sound speed in the surface ocean is due to changes in temperature. This is because the effect of salinity on sound speed is small and salinity changes in the open ocean are small. Near shore and in estuaries, where the salinity varies greatly, salinity can have a more significant effect on the speed of sound in water. As the depth increases, the pressure of the water has the largest effect on the speed of sound.

An ocean-depth sounding device emits a signal 38 kHz in water whose average temperature is 4°C. The impulse is reflected from the ocean bed and returned to the same location 1.62 s after the signal is emitted. Calculate: (i) The depth of the water

Answer»

Explanation:

The SPEED of sound in WATER depends on the water properties of temperature, salinity and pressure (directly related to the DEPTH). A typical speed of sound in water NEAR the OCEAN surface is about 1520 meters per second. That is more than 4 times faster than the speed of sound in air. The speed of sound in water increases with increasing water temperature, increasing salinity and increasing depth. Most of the change in sound speed in the surface ocean is due to changes in temperature. This is because the effect of salinity on sound speed is small and salinity changes in the open ocean are small. Near shore and in estuaries, where the salinity varies greatly, salinity can have a more significant effect on the speed of sound in water. As the depth increases, the pressure of the water has the largest effect on the speed of sound.

An ocean-depth sounding device emits a signal 38 kHz in water whose average temperature is 4°C. The impulse is reflected from the ocean bed and returned to the same location 1.62 s after the signal is emitted. Calculate: (i) The depth of the water

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