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Margarita [4]
3 years ago
11

Mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. What could explain this?

Physics
2 answers:
suter [353]3 years ago
5 0

<u>Answer </u>

D. Salt water is denser than freshwater.

<u>Explanation</u>

A boat is able to float on water because it experiences an upthrust upwards.

The magnitude of the upthrust depends on the density of the liquid.

When the liquid is denser the boat will experience a great upthrust as compared to when in a less dense liquid.

If the boat sinks lower in the freshwater than in salty water, then Salt water is more dense than freshwater.



Ludmilka [50]3 years ago
5 0

Answer: D) Salt water is more dense than freshwater.

Explanation: Suppose that you have a glass of water, and you put a little amount of salt in it and mix it.

Now you may see that there is more matter in the glass (the volume of the solution inside the glass also may increase, but not in an appreciable magnitude compared with the increase in mass). And you may know, the density is calculated:

Density = Mass/volume

So if you have more mass in the same volume, this means that the density increases.

And is easier to float in a denser medium than in a low density medium (is easier to float in honey than in water, for example)

So if the medium if denser, the boat will float more easily.

Then the right answer is option D:  Salt water is more dense than freshwater

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Answer:

915 Hz

Explanation:

The observed frequency from a sound source is given as

f₀ = f [(v + v₀)/(v+vₛ)]

where

f₀ = observed frequency of the sound by the observer = ?

f = actual frequency of the sound wave = 983 Hz

v = actual velocity of the sound waves = 343 m/s

vₛ = velocity of the source of the sound waves = 55.9 m/s

v₀ = velocity of the observer = 28.4 m/s

f₀ = 983 [(343+28.4)/(343+55.9)]

f₀ = 915.2 Hz = 915 Hz

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Explanation:

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8 0
3 years ago
Read 2 more answers
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