Before hoop skirts, women who wanted their gowns to feature large skirts wore many heavy layers of a material called crinoline, which was made from thread and what other material?.

Answer:

4. the feather experiences more fluid friction than the ball

Answer:

the answer is 352.8m

Explanation:

Since the gravitational constant is denoted as g

\(g = 9.8 \: \frac{m}{ {s}^{2} }\)

and the ball needed 6 seconds to land, so we can calculate the height of the building as:

\(h = 9.8 \: \frac{m}{ {s}^{2} } \times {(6s)}^{2} = 9.8 \: \frac{m}{ {s}^{2} } \times 36 {s}^{2} = 352.8m\)

By studying the emission, reflection, refraction, and absorption of energy from objects, scientists can gather valuable information about their properties, composition, and behavior.

We can learn about objects of interest through matter/energy interaction using various processes such as emission, reflection, refraction, and absorption. Here's how each process provides information:

1. Emission: Objects can emit energy in the form of light or other electromagnetic radiation. By studying the emitted radiation, we can gather information about the object's composition, temperature, and other properties. For example, analyzing the emission spectra of stars helps us determine their chemical composition.

2. Reflection: When light or other forms of energy strike an object, they can bounce off or reflect from its surface. By analyzing the reflected energy, we can gather information about the object's appearance, surface properties, and color. For instance, studying the reflection of radar signals can provide information about the shape and structure of distant objects like planets or asteroids.

3. Refraction: Refraction occurs when energy, such as light, passes through a medium and changes direction. By observing how light bends or changes its path while passing through an object, we can learn about its optical properties and the medium it interacts with. Refraction is utilized in techniques like spectroscopy to analyze the composition of materials.

Absorption: When energy interacts with an object, it can be absorbed by the object's atoms or molecules. The absorption spectrum of an object provides information about the specific wavelengths of energy it absorbs. This allows us to identify the presence of certain elements or compounds. Absorption spectroscopy is commonly used in chemistry, astronomy, and other scientific fields to identify substances based on their unique absorption patterns.

By studying the emission, reflection, refraction, and absorption of energy from objects, scientists can gather valuable information about their properties, composition, and behavior. These techniques are widely used across various scientific disciplines, including astronomy, chemistry, remote sensing, and materials science.

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Answer:

The kinetic energy decreases.

Explanation:

Friction is defined as a opposite force to motion. If friction is the only force acting on an objects, its kinetic energy decreases.

It is so because due to resistive force or friction, kinetic energy is converted to heat energy and that reduces the total kinetic energy in the system.

Hence, the correct answer is "The kinetic energy decreases."

The assumptions must be made base in the object’s kinetic energy in a situation whereby frictional force is the only force acting on an object is A:The kinetic energy decreases.

Therefore, option A is correct.

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Answer:

for one they will stay there. And another thing it will do is collect rust pretty much destroying it.

Explanation:

The missing value in the table is the wavelength of the sound wave, which is calculated to be 6.3 meters using the formula wavelength = wave speed / frequency. so, the correct option is A).

The given problem provides the speed and frequency of a sound wave and asks to find the missing value of the wavelength.

Using the formula for wavelength,

λ = v/f

In this case, the frequency was 55Hz and the speed of the wave was 346m/s.

λ = 346 m/s / 55 Hz

λ = 6.3 m

the missing value was calculated to be 6.3 meters. The wavelength is the distance between adjacent crests or troughs of a wave and is the reciprocal of the frequency. so, the correct answer is A).

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--The given question is incomplete, the complete question is given

" A sound wave generated by musical note has the characteristics presented in the table. What is the missing value

A 6.3

B 4.7

C 7.5

D 5.6 "--

Answer:

Similitudes y diferencias entre los músculos de los peces y los de los animales terrestres.

Explicación:

Los músculos de los peces se diferencian del músculo de los animales terrestres porque los peces tienen músculos rojos, rosados y blancos. También tienen tejido muscular de pescado que se compone de músculo estriado al igual que el músculo de los animales terrestres. La mayor parte del tejido muscular de los peces es de color blanco, pero muchos peces también tienen una cierta cantidad de tejido oscuro de color marrón o rojizo. El músculo oscuro se encuentra justo debajo de la piel a lo largo del costado del cuerpo.

The Measure of angle E is 55° and Length of the side EF is 12.49 units

The diagram is missing in the question and hence the diagram is shown below!!!

Given the triangle EDF with angle measures ∠D = 43° and ∠F = 82°.

As, we know, The sum of the measures of angles in a triangle is 180°.

So, we have,

∠E + ∠D + ∠F = 180°

i.e. ∠E + 43° + 82° = 180°

i.e. ∠E = 180° - 125°

i.e. ∠E = 55°

Thus, the measure of angle E is 55°.

Further we have

15/sin55 = EF / sin43

∴ EF =  15*sin43/sin55

∴EF = 10.23/0.189

EF = 12.49 units

Hence the length of side of EF is 12.49 units

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Please give the person above me brainliest!!!

✔ 55

✔ 12.49

Different wavelengths of light result in various color perceptions. Whereas violet is perceived by the shortest wavelengths, red is perceived by the longest ones.

Frequency and wavelength are two important characteristics of a wave cycle. A further definition of "wavelength" is the distance between any two matching positions on adjacent waves. Frequency is another word for the number of waves that pass through a specific location in a specific amount of time.

The wavelength is the space between successive crests, whereas the frequency is the quantity of crests that impact the beach per second. The only distinction is that we do so when discussing light rather than water.

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The air that is inside a ship is much less dense than water. That's what keeps it floating! ... The closer the total density of the ship is to the density of the same volume of water, the greater the amount of the ship that will be in the water.

The new volume of the gas will increase to twice the original volume (Option D)

From the question given above, the following data were obtained:

The new volume of the gas can be obtained as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

Since the temperature is constant, we have:

P₁V₁ = P₂V₂

P × V = 0.5P × V₂

Divide both side by 0.5P

V₂ = (P × V) / 0.5P

V₂ = V / 0.5

V₂ = 2V

Thus, the new volume of the gas will increase to twice the original volume (Option D)

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Answer: (38.5°C × 9/5) 32 = 101.3°F

Explanation:

The mechanical advantage of a pulley is the ratio of the output force to the input force.

For example, if a pulley is used to lift a weight of 100 pounds, and the input force is 10 pounds, then the mechanical advantage is 10:1 (100/10).

This means that for every 10 pounds of input force, the pulley can lift 100 pounds of weight. The mechanical advantage of a pulley is determined by the number of strands of rope that are used in the pulley system. The more strands of rope, the higher the mechanical advantage will be.

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The other pancakes are at various temperatures and Conduction refers to the mode of transfer of thermal energy that arise when the two bodies are in close contact.

The other pancakes are presumably at different temperatures in this scenario. If this is the case, then due to the thermal energy transfer, the pancake with the highest temperature should be the warmest at the bottom. Conduction is the process through which thermal energy is transferred when two bodies are in close proximity to one another.

Thermometers are used to measure the air's temperature. Common thermometers have a glass rod inside of which is a very thin tube. A liquid is delivered to the tube from a reservoir, or "bulb," at the thermometer's base. Sometimes the liquid is reddish alcohol, and other times it is mercury.

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From low to high frequency, a wave's wavelength increases while its frequency decreases: 0.8 km, 5 m, 7 cm, 3 m, 460 nm, and 0.02 nm. The characteristic of a wave is known as its wavelength.

A wave's wavelength is the characteristic that determines how far identical locations between two succeeding waves are separated. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave.

The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency.

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During the downward part of the trajectory of the ball are position is positive, velocity is negative and acceleration is negative.

The ball is above the ground for the falling portion of the trajectory, so the position with respect to the ground is positive.

Because the ball descends, its velocity is also in the downward direction and is therefore in the negative.

Gravity causes the ball's acceleration to be downward, hence acceleration is negative.

A position along a vertical axis that is above or below a specific vertical datum is referred to as a vertical position or vertical location. The difference between adjacent vertical places is known as the vertical separation or vertical distance. There are numerous ways to express vertical position using vertical coordinates, including depth, height, elevation, elevation, etc.

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The initial volume of the balloon when it was inflated under the conditions in Mongolia is 6.0 L. The volume of the balloon under the new conditions described for the typhoon in the Pacific is 5.6 L, assuming no change in temperature.

The conditions in Mongolia are not specified, but it is clear that the conditions in the Pacific are different. The question asks for the volume of the balloon under the new conditions described for the typhoon in the Pacific. Since there is no change in temperature, we can use the ideal gas law, which is PV = nRT.

The volume of the balloon will change due to the change in pressure. The pressure will increase under the new conditions in the Pacific. Therefore, the volume will decrease. The formula for this is:

P1V1 = P2V2

where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

We can use this formula to find the final volume of the balloon under the new conditions in the Pacific.P1 = initial pressure = unknownV1 = 6.0 LP2 = final pressure = unknownV2 = final volume

We know that the volume of the balloon will decrease, so V2 < V1. We can solve for V2 as follows:P1V1 = P2V2V2 = (P1V1)/P2Now we need to find the pressure in Mongolia and the pressure in the Pacific.

We can use the average sea level pressure for each location as a reference. The average sea level pressure in Mongolia is about 1000 hPa. The average sea level pressure in the Pacific is about 1013 hPa. We can use these values as estimates for P1 and P2, respectively.

P1 = 1000 hPaV1 = 6.0 LP2 = 1013 hPaV2 = (P1V1)/P2V2 = (1000 hPa * 6.0 L)/1013 hPaV2 = 5.6 L

Therefore, the volume of the balloon under the new conditions described for the typhoon in the Pacific is 5.6 L, assuming no change in temperature.

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Answer:

I guess rinse it out and wipe it up. It's not a hazardous substance so there's nothing to worry about.

These substances should be cleaned up rinsing the area or removing the compounds with a cloth and dispose of it in the trash.

Sugar is a chemical compound also called sucrose. Its chemical formula is C12H22O11. This compound is normally used to sweeten foods.

On the other hand, common salt is a chemical compound. Its chemical formula is NaCl. This compound is normally used to give food a salty taste.

According to the above, in which a student spilled some salt and sugar in the sink and does not know how to clean it, it can be concluded that the proper way to clean these chemical compounds is by rinsing the area or removing the compounds with a cloth and dispose of it in the trash because neither of them represents biological, chemical or physical risks and a specialized treatment is not required for them.

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The statement is TRUE! The precise or specific location of an electron cannot always be known or determined, regardless of what we do.

We can only assume it exists somewhere. It is also known as the "electron cloud model." It demonstrates that we can find electrons by considering "the probability of being in a certain location."

One of the theories that I believe explains this strange physics is the Principle of Heisenberg's Uncertainty. This equation describes electron wave-particle duality.

The peculiarities of the quantum realm have been repeatedly demonstrated. Knowing more means admitting that we know less.

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Answer:

Home run

Explanation:

i play

In order to determine the probability that an electron can be detected in the middle one-third of a well region, we need to take into account the wave function and the boundary conditions.The wave function represents the probability density of finding the electron in a particular location within the well. The boundary conditions are determined by the geometry of the well, which can be rectangular, triangular, or other shapes.

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Answer:

125,000

Explanation:

The magnetic flux associated with the coil is 0 Wb.

Magnetic flux is the total magnetic field that travels through a specific location.

It is a very useful tool for explaining the effects of magnetic force on things in a specific location.

The magnetic flux measurement is location specific.

The magnetic flux through the coil is NBA cosα

where N is number of turns, B is Magnetic field, A is area of coil and α is the angle between normal to the area of coil and the direction of magnetic field.

Magnetic Flux = NBA cosα

We have given number of turns as 100, magnetic field as 3 and area as 5 m².

Also, the value of α will be 90°

Magnetic Flux = NBA cosα Wb

Magnetic Flux = 100 × 3 × 5 × cos90° Wb

Magnetic Flux = 100 × 3 × 5 × 0 Wb

Magnetic Flux = 0 Wb

So we can conclude that the magnetic flux through the coil is 0 wb after applying the above concept.

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The volume of the triangular shape is 10.35 km³.

In geometry, volume is the amount of space enclosed by a three-dimensional object. It is measured in cubic units, such as cubic meters or cubic centimeters. The volume of a regular object can be calculated using a formula, while the volume of an irregular object can be calculated by dividing it into smaller regular objects and adding up their volumes.

For example, the volume of a cube with a side length of 1 meter is 1 cubic meter. The volume of a sphere with a radius of 1 meter is 4/3π cubic meters. The volume of a cylinder with a radius of 1 meter and height of 2 meters is 2π cubic meters.

The formula gives the volume of a triangular shape:

V = 1/2 * b * h * t

where:

b is the base of the triangle

h is the height of the triangle

t is the thickness of the triangle

In this case, we have:

b = 7 km

h = 1.9 km

t = 3 km

So now, the volume of the triangular shape is:

V = 1/2 * 7 km * 1.9 km * 3 km = 10.35 km³

Therefore, the volume of the triangular shale is 10.35 km³.

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We can calculate the refractive index by substituting the values into the formula: n = √(1 - (2.774 × 10^6 / f)^2). The refractive index of the ionospheric layer can be determined using the formula n = √(1 - (f_ce / f)^2)

(a) The refractive index of the ionospheric layer can be determined using the formula n = √(1 - (f_ce / f)^2), where n represents the refractive index, f_ce is the electron gyrofrequency, and f is the frequency of the incident wave.

The electron gyrofrequency (f_ce) can be calculated using the formula f_ce = 8.978 × √(N), where N is the electron density. Substituting the given electron density value, we have f_ce = 8.978 × √(24.536 × 10^11) ≈ 2.774 × 10^6 Hz.

Now, we can calculate the refractive index by substituting the values into the formula: n = √(1 - (2.774 × 10^6 / f)^2).

(b) The critical frequency for the communication link can be determined using the formula f_c = f_ce / sin(θ), where f_c represents the critical frequency and θ is the angle of incidence. Substituting the given angle of 60°, we have f_c = 2.774 × 10^6 Hz / sin(60°).

(c) The maximum usable frequency (MUF) can be calculated using the formula MUF = f_c / sin(θ). Substituting the critical frequency and angle of incidence given in parts (b) and (a), respectively, we can find the MUF.

(d) Transmissions would fail at the frequencies of 10 MHz and 30 MHz because they are below the critical frequency. The critical frequency represents the maximum frequency that can be reflected back to Earth by the ionospheric layer. If the frequency of the transmission is below the critical frequency, the wave would penetrate through the ionosphere and not be reflected back, leading to a failed transmission.

(e) The ionosphere bends high-frequency radio waves towards Earth due to the phenomenon of refraction. When a radio wave encounters the ionosphere, which is composed of charged particles, it experiences a change in speed and direction. This change in speed and direction is due to the varying density and composition of the ionosphere at different altitudes.

As the radio wave passes through the ionosphere, its path is curved downward towards the Earth's surface. This bending phenomenon occurs because the refractive index of the ionosphere is greater than that of the surrounding vacuum or atmosphere. The higher the frequency of the radio wave, the greater the bending effect due to the higher electron density in the ionosphere at higher altitudes.

This bending of high-frequency radio waves allows for long-distance communication by enabling the waves to travel beyond the line-of-sight. It plays a crucial role in long-distance radio communication, especially in areas where direct line-of-sight transmission is obstructed by the Earth's curvature or other obstacles.

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Answer:

a c d

Explanation:

yeet

Answer:

a c d

Explanation:

The calculated values of E1 and E2, we can find the magnitude and direction of the total electric field at x=4.0 cm.

What is Magnitude?

Magnitude refers to the absolute value or size of a quantity, such as a scalar or vector quantity, without regard to its direction or sign. In physics, magnitude often represents the numerical value or measurement of a physical quantity, such as length, mass, time, temperature, electric field, or force, without considering its direction or orientation.

ote that the direction of electric field due to charge q1 at the origin (r1 = 0) will be radially outward from the origin, while the direction of electric field due to charge q2 at x=12 cm (r2 = 0.12 m) will be radially inward towards x=12 cm.

Step 4: Calculate the magnitude and direction of the total electric field at x=4.0 cm.

The magnitude of the total electric field (E_total) can be calculated as the magnitude of the vector sum of E1 and E2:

where Ex and Ey are the x and y components of the vector sum E_total.

To find the direction of the total electric field, we can determine the angle it makes with the positive x-axis:

θ = \(tan^{-1}\)(Ey / Ex)

Plugging in the values and calculating, we get:

Ex = E1 - E2 (since E1 is radially outward and E2 is radially inward)

Ey = 0 (since the electric fields are aligned along the x-axis)

θ = \(tan^{-1}\)(0 / (E1 - E2)) (direction angle)

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Yes, it contains two leading zeroes.

A leading zero are zeroes before the non-zero digits.

There are 2 zeroes before the non-zero digits.

Best of Luck!

Answer:

Spaghetti.

Explanation: