How are airplanes artificially pressurized?

Answers

Answer 1

Answer: They are built to be airtight so thsy sir can't get in or out, and then, as they climb up to where the air is thin, they use an air pump to pimp air into the inside.

Just like a party balloon.

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If it takes 50n of force to lift a 450n what is the ma of the machine

Answers

If the machine is 100% efficient, then its
Mechanical Advantage is (450/50) = 9 .

If the machine is less than 100% efficient,
then the MA is more than 9 .

When Emma pushes a bag with a force of 27 newtons, the coefficient of kinetic friction between the bag and the floor is 0.23. What is the normal force acting on the bag by the floor?. A. 0.085 newtons B. 27 newtons C. 2.7 × 10^2 newtons . D. 1.2 × 10^2 newtons

Answers

The normal force acting on the bag by the floor is calculated using th data on the force used to push the bag and the coefficient of friction between the bag and the floor. The normal force is determined through the formula Force / kin.coeff. Substituting, 27 N / 0.23 is equal to 117. 39 N. The answer is D.

Answer:

the answer is D, hope this helps

Explanation:

The primary reason a light bulb emits light is due to

Answers

Answer:

Resistance

Explanation:

Answer:

The correct answer is (C) resistance.

Explanation: i used the answer above and i got it right!

Multiple Choice: A small amplitude transverse wave is travelling on a string. The frequency of the wave is suddenly doubled. Which one of the following is a true statement?a) The period of the wave doubles
b) The wavelength doubles
c) The speed of the wave doubles
d) The wavelength is cut in half
e) The speed of the wave is cut in half

Answers

The wavelength of the string is cut in half. The answer is D. The higher the frequency the shorter the wavelength. They are inversely proportional.

Final answer:

Doubling the frequency of a transverse wave on a string would result in the wavelength of the wave being halved. This is due to the inverse relationship between frequency and wavelength in the context of wave speed remaining constant.

Explanation:

When considering a transverse wave travelling on a string, if the frequency is suddenly doubled, then the wavelength would be cut in half rather than any other given option. This is because the speed of a wave is determined by the medium through which it travels—in this case, the string—rather than its frequency or amplitude. Because the speed remains constant when the frequency doubles, the only factor left to adjust is the wavelength, according to the wave speed equation 'v = fλ', where 'v' is wave speed, 'f' is frequency, and 'λ' is wavelength. Thus, frequency and wavelength have an inverse relationship: if frequency increases (doubles, in this case), wavelength must decrease (halve) to maintain the constant wave speed.

Learn more about Transverse Wave here:

brainly.com/question/23165088

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A thin layer of turpentine (n=1.472) is floating on water (n=1.333). Light of wavelength 589 nm initially traveling in air is incident on the turpentine at an angle of 24.8° measured with respect to the air-turpentine interface. What is the light's refraction angle in the turpentine?

Answers

The angle of refraction of the light in turpentine will be $\boxed{38.1^\circ}$ .

Explanation:

Given:

The refractive index of the turpentine is $1.472$ .

The refractive index of the water is $1.333$ .

The angle that the light makes with the surface of the turpentine is $24.8^\circ$ .

Concept:

As the light is incident on the surface of the turpentine at the air-turpentine interface, the light gets refracted from the surface. The refraction of light occurs due to change in the refractive index at the air-turpentine surface.

The angle of the refracted ray after undergoing refraction is given by the Snell's law.

$\boxed{n_1sin\,i=n_2sin\,r}$

Here, $n_1$ is the refractive index of first medium, $n_2$ is the refractive index of second medium, $i$ is the angle of incidence and $r$ is the angle of refraction.

The angle of incidence is the angle made by the light from the normal to the surface. So, in this case, the angle of incidence will be $(90^\circ-24.8^\circ)$ i.e. $65.2^\circ$ .

Substitute the values in above expression.

$\begin{aligned}(1)sin\,(65.2^\circ)&=(1.472)sin\,(r)\nr&=sin^(-1)\left((1)/(1.472)sin\,(65.2^\circ)\right)\n&=sin^(-1)(0.616)\n&\approx38.1^\circ\end{aligned}$

Thus, The angle of refraction of the light in turpentine will be $\boxed{38.1^\circ}$ .

Learn More:

1. How does the reflection differ from refraction and diffraction brainly.com/question/3183125

2. The reason for the refraction of light at air water interface brainly.com/question/3095091

3. Approximate length of the unsharpened pencil brainly.com/question/6140057

Answer Details:

Grade: High School

Subject: Physics

Chapter: Refraction

Keywords:

thin layer, turpentine, Snell's law, refraction, air, interface, normal, incident, light, refracted, refraction, refraction angle.

Answer:

16.6 degrees

Explanation:

We can solve the problem by using Snell's law for refraction:

$n_1 sin \theta_1 = n_2 sin \theta_2$

where:

$n_1 = 1.00$ is the index of refraction of the first medium (air)

$\theta_1 = 24.8^(\circ)$ is the angle of incidence

$n_2 = 1.472$ is the index of refraction of the second medium (turpentine)

$\theta_2$ is the angle of refraction of light in turpentine

By re-arranging the equation and using the numbers, we find

$sin \theta_2 = (n_1)/(n_2) sin \theta_i = (1.0)/(1.472) sin 24.8^(\circ)=0.285\n\theta_2 = sin^(-1) (0.285)=16.6^(\circ)$

What aspect of a hurricane determines how much rain will fall?

Answers

The answer is:

The track of the storm determines how much rain will fall.

The explanation:

-Storm tracks are the relatively narrow zones in seas and oceans where storms travel driven by the prevailing winds.

-hurricane is a tropical cyclone with winds of 74 miles (119 kilometers) per hour or greater that occurs especially in the western Atlantic, that is usually accompanied by rain, thunder, and lightning, and that sometimes moves into temperate latitudes. and it has aspects that can cause damage, these are flood, wind, surge, heavy rains and tornadoes.

THE TRACK OF THE STORM determines how much rain will fall.
Hurricane refers to a storm with violent wind, it usually occurs in tropical Caribbean areas. Each hurricane has five essential aspects that can cause damage, these are: flood, wind, surge, heavy rains and tornadoes.

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