Hydrophones scientists listen to and record sounds from the ocean. which statement best describes how ocean water affects sound waves? (2 points)

Explanation:

A hydrophone is a device that converts vibrations of sound waves, which are present in the form of pressure into water (or any liquid), into electrical energy. This means hydrophones work analogously to microphones in the air, so they are also known as "submarine microphones".

However, the speed of propagation of sound in water will vary according to its pressure, temperature and salinity. In the specific case of the pressure, when it increases, the speed of the sound waves also increases.

Also, as the pressure in the water is a function of the depth, in waters like those of the sea, the speed of the sound will increase with the depth.

Therefore:

High water pressure increases the speed of sound.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue