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kkurt [141]
3 years ago
6

When a fish expands its air bladder, the density of the fish

Physics
1 answer:
Mazyrski [523]3 years ago
8 0
<h2>Answer: decreases</h2>

Every substance, body or material has mass and volume, however the mass of different substances occupy different volumes.

This is where density  D  appears as a  physical characteristic property of matter that establishes a relationship between the mass  m of a body or substance and the volume  V it occupies.

D=\frac{m}{V}

So, according to this equation, the density is inversely ptoportional to the volume:

If the volume increases, the density decreases.

This is what a fish does to have buoyancy, since the density of a body is related to its buoyancy:

A body will float on another fluid if its density is lower.

<h2>This is what the fish does when it expands its air bladder, incrementing its volume, hence decreasing its density.</h2>

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PLEASE HELP!!
IrinaK [193]

Answer:

A

Explanation

i think its a not 100% sure though.

7 0
3 years ago
Why is an increase in speed a curved line on a position vs. time graph but a straight diagonal line on a speed vs. time graph?
guapka [62]
What do you need help with
7 0
3 years ago
There are 2 questions into 1
kiruha [24]

As we know that magnitude of the vector is 670 m

and it is inclined 25 degree with x axis

now we know that component of vector along x direction is given as

x = L cos\theta

x = 670 cos25

x = 610 m


Part 2)

In order to find the other component of the vector we can use

y = L sin\theta

y = 670 sin25

y = 280 m

3 0
4 years ago
several months after a forest is cut down, a nearby river becomes much muddier than ever before. Infer how the river changed
ryzh [129]
Well this is just my opinion but I think because all the plants were gone they cant stop mud from rolling into it. Also when it rains the trees wont suck up the water, that will make it over flow and release into the land or dirt on the outsides of it. Mixing those two gives mud and it can potentially flow back in the river in largeish masses causing the river to mix with the mud makinging it more muddy. Hope this helps :D
4 0
4 years ago
A traveler pulls on a suitcase strap at an angle 36 above the horizontal with a force of friction of 8 N with the floor. If 752
goldenfox [79]

Answer:

71.8 N

Explanation:

T = Tension force in the strap

W = net work done = 752 J

f = force of friction = 8 N

d = displacement = 15 m

θ = angle between tension force and horizontal displacement = 36 deg

work done by frictional force is given as

W' = - f d

Work done by the tension force is given as

W'' = T d Cos36

Net work done is given as

W = W' + W''

W = T d Cos36 - f d

752 = T (15) Cos36 - (8) (15)

T = 71.8 N

8 0
3 years ago
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