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Lubov Fominskaja [6]
3 years ago
6

100 POINTS AND BRAINLIEST!!! How does the egg sucked into a glass bottle trick work?

Physics
2 answers:
emmasim [6.3K]3 years ago
6 0

Answer: The egg will get sucked into the bottle. To get the egg out of the bottle, turn the bottle upside down and blow into it, so that the egg acts as a one-way valve. The increased air pressure in the bottle will cause the egg to pop back out.

Explanation:

NNADVOKAT [17]3 years ago
3 0

Quickly place the egg over the mouth of the bottle. The egg will get sucked into the bottle. To get the egg out of the bottle, turn the bottle upside down and blow into it, so that the egg acts as a one-way valve. The increased air pressure in the bottle will cause the egg to pop back out.

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The mass of a coin is measured to be 12.5±0.1 g. The diameter is 2.8±0.1 cm and the thickness 2.1 ±0.1 mm. Calculate the average
Evgesh-ka [11]

The average density of the material from which the coin is made is 9.67 g/cm³.

<h3>Volume of the coin</h3>

The volume of the coin at the given diameter is calculated as follows;

V = Ah

where;

  • A is area of the coin
  • h is the thickness of the coin

V = πd²/4 x h

V = π(2.8)²/4  x (0.21 cm)

V = 1.293 cm³

<h3>average density of the coin</h3>

The average density of the material from which the coin is made is calculated as follows;

density = mass/volume

density = 12.5 g / (1.293 cm³)

density = 9.67 g/cm³

Thus, the average density of the material from which the coin is made is 9.67 g/cm³.

Learn more about average density here: brainly.com/question/1354972

#SPJ1

7 0
2 years ago
True or False: A change of 1 pH unit represents a tenfold change in the<br> acidity of the solution.
alisha [4.7K]

Answer:

I was also going to ask same question edited:ok i found its true

7 0
3 years ago
Longitudinal seismic waves are known as
Helga [31]
Its “A“ primary waves!!!!!!
3 0
3 years ago
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The engine of a locomotive exerts a constant force of 6.8 105 N to accelerate a train to 80 km/h. Determine the time (in min) ta
Setler [38]

Answer:

t = 6 minutes

Explanation:

Given that,

Force,F=6.8\times 10^5\ N

Initial speed of the train, u = 0

Final speed of the train, v = 80 km/h = 22.22 m/s

The mass of the train, m=1.1\times 10^7\ kg

We need to find the time taken by the train to come to rest. We know that,

F = ma

F=\dfrac{m(v-u)}{t}\\\\t=\dfrac{m(v-u)}{F}\\\\t=\dfrac{1.1\times10^7\times (22.22-0)}{6.8\times 10^5}\\\\t=359.44\ s

or

t = 6 minutes (approx)

So, the required time is equal to 6 minutes.

3 0
3 years ago
If measurements if a gas are 75L and 300 full-scale and then the gas is measured a second time and found to be 50L, describe wha
swat32
The answer is a bit confusing, so I did some research and fount the original question. This is the complete question:

"<span>If measurements of a gas are 75L and 300 kilopascals and then the gas is measured a second time and found to be 50L, describe what had to happen to the pressure (if temperature remained constant). Include which law supports this observation".

From that:

1) Data:

V1 = 75 liter
P1 = 300 kPa

V2 = 50 liter
P2 = x

T = constant.

2) Analysis (physical law)

Boyle's law states that the volume of a fixed amount of gas, at constant temperarature, is inversely related with the pressure.

In mathematical form that statement becomes into this equation:

PV = constant (at constant T)

=> P1V1 = P2V2.

Then, the decreasing of the volumen (compression) is accompanied by an increase of the pressure.

3) So, using Boyle's law with the data given:

300 kPa * 75 liter = x * 50 liter

=> x = 300 kPa * 75 liter / 50 liter = 450 kPa.

Answer: following Boyle's law, when the gas passed from 75 liter to 50 liter the pressure had to increase from 300 kPa to 450 kPa.

</span>
3 0
3 years ago
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