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svp [43]
3 years ago
7

While scuba diving with some friends, Deshawn notices that the air bubbles exhaled by his friends increase in size as they get c

loser to the surface of the water.
Why does this occur and which gas law explains it?
hurrry plzz/////
Physics
2 answers:
stich3 [128]3 years ago
5 0
Hello!

What Deshawn notices is that the volume of the bubbles increase as they get closer to the surface of the water.

This occurs because of the Boyle's Law. That Law states that when pressure decreases at constant temperature (like in water), the volume of a gas increases (P1*V1=P2*V2). 

What is happening is that as the bubbles get closer to the surface of the water, the pressure on them decreases, causing their volume to increase, and that is seen by the increase in the size of the Bubbles that Deshawn noticed.

Have a nice day!
MariettaO [177]3 years ago
5 0

Answer:

Sample Response: As the air bubbles rise to the surface, the pressure on them decreases. This decrease in pressure allows the air to expand and each bubble increases in size. Boyle’s law explains why this occurs.

Explanation:

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kotykmax [81]
First, you make a force body diagram to illustrate the problem. Then, apply Newton's laws of motion.

Summation of forces along the y-direction:

F = 0 (bodies at equilibrium) = Normal force - weight*cos45 = 0
Normal force = wcos45

Summation of forcesalong the x-direction:

F = 0 (bodies at equilibrium) = Frictional force - weight*sin45 = 0
x*Normal force - weight*sin45 = 0   (let x be the min coeff of static friction)
x*weight*cos45 = weight*sin 45
x = sin45/cos45 = 1

Therefore, the minimum coefficient of static friction must be 1.
8 0
3 years ago
Explain why fishes survive in ponds even when the temperature is below 0°c
zmey [24]

Answer:

After sufficient thickness of ice is formed it prevents further loss of heat from the bottom layers of water. This is why fishes and other aquatic animals and plants can survive in ponds and other water bodies even when the atmospheric temperature reaches or is well below 0 degrees.The anomalous expansion of water helps preserve aquatic life during very cold weather. When temperature falls, the top layer of water in a pond contracts becomes denser and sinks to the bottom. ... Thus, even though the upper layer are frozen, the water near the bottom is at 4°C and the fishes can survive in it easily.

3 0
3 years ago
In triangle​ ABC, the angles A and B have the same​ measure, while the measure of angle C is 21degrees larger than the measure o
Lynna [10]
180 = 2x+x+21
159 = 3x
x = 53
Angle A = 53°
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7 0
3 years ago
If a box of supplies is dropped from the cargo hold of an airplane travelling at an altitude of 4,410 meters how long will it ta
Paraphin [41]

Answer:

It will take 30 seconds to reach the ground, and it will be travelling at 294 m/s when it does so. This means that its average velocity was 147 m/s.

Explanation:

d=v_ot+\dfrac{1}{2}at^2

Since the initial velocity of a dropped object is 0, we can make this the equation:

d=\dfrac{1}{2}at^2 \\\\4410=\dfac{1}{2}(9.8)t^2 \\\\t^2=900

t=30\text{ seconds}

The final velocity can be calculated with the formula:

v_f=v_o+at

Once again, since there is no initial velocity:

v_f=at \\\\v_f=(9.8)(30)=294m/s

Since the initial velocity is 0, the average vertical velocity is 294/2=147 m/s.

Hope this helps!

5 0
4 years ago
What is the weigh in newtons of an automobile with a mass of 1800 kg?​
Allushta [10]

Answer:

The weight of an automobile, W = 17640 N

Explanation:

Given that,

The mass of an automobile, m = 1800 Kg

The weight of an object is represented as the gravitational force acting on an object of mass 'm'. It given by the formula

                                   W = m x g   newton

Where,

                  g - acceleration due to gravity.

Substituting the given values in the above equation

                                   W = 1800 Kg x 9.8 m/s²

                                       = 17640 N

Hence, the weight of the automobile, W = 17640 N

8 0
4 years ago
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