The speed of a sound wave in sea water is 1500 m/s. A ship with a sonar system sends out a sonar signal. The echo from the sea floor is received after
6 s. If the frequency of the wave is 440 Hz, calculate:
1.The depth of the sea
2.wavelength of the wave
3.period of wave

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If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume