Ptolemy, as was common with most Ancient Greek philosophers, believed that the earth was at the center of the universe. It was not until Copernicus that the idea that the sun was at the center of the solar system emerged. Kuhn would call this an example of:

Answer:The continuity equation for a compressible liquid is a mathematical expression that relates the changes in fluid density, velocity, and volume to the changes in time. This equation can be written as:

∂ρ/∂t + (ρv)•∇ = 0

where:

ρ = fluid density

v = fluid velocity

∂/∂t = partial derivative with respect to time

∇ = del operator

The continuity equation expresses the principle of mass conservation, stating that the rate of change of fluid density in a fixed volume must be equal to the rate of flow of fluid into or out of that volume. This equation is commonly used in fluid dynamics to study the behavior of liquids and gases in various applications, such as in pipelines, pumps, valves, and compressors.

Explanation:

Violet and yellow light are both colors that are part of the visible spectrum, which is the range of colors that can be seen by the human eye. When comparing violet and yellow light, one important factor to consider is the wavelength of each color.

Violet light has a shorter wavelength than yellow light. The wavelength of violet light is approximately 400-450 nanometers, while the wavelength of yellow light is approximately 570-590 nanometers. This means that violet light has a higher frequency and more energy than yellow light.

Because of its shorter wavelength, violet light is often associated with properties such as creativity, spirituality, and intuition. It is also known for its ability to stimulate the brain and enhance concentration. On the other hand, yellow light is often associated with positivity, happiness, and warmth. It is also known for its ability to improve mood and boost energy levels.

Overall, while both violet and yellow light are important colors in the visible spectrum, they differ in their wavelength and associated properties.

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An envelope of plasma surrounding the sun describes the solar feature shooting off into space labeled C.

Near sunspots, the magnetic field lines frequently rearrange, cross, and tangle. A solar flare, which is a quick explosion of energy, may result from this. A lot of radiation is sent into space during solar flares.

Given, Image of the sun with three solar properties labeled A, B, and C.

Label A points to lit particles shooting outward from and then coming back toward the sun's surface.

Point A represents prominence.

Label B points to a region on the sun's surface that is bright.

Point A represents a Solar flare.

Label C points to the layer of the sun's atmosphere.

Point C represents Corona. Corona is a luminous envelope of plasma that surrounds the Sun and other celestial bodies. It is extended to millions of kilometers into space and is commonly seen during a total solar eclipse.

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Complete question:

Answer: the answer is a

Explanation:

Answer:

200,000 joules <3

Explanation:
just accept it

Answer:

\(2.00 * 10^5J\)

Explanation:

Make use of your conversion factors:

\(200KJ * \frac{1000J}{1kJ} = 200,000J = 2.00* 10 ^5J\)

Or alternatively make use of your scientific notation. \(kilo = 10^3\)

Therefore \(200kJ = 200*10^3J=2.0*10^2*10^3J = 2.0*10^5J\)

Answer:

Mac’s Speed = 2.5 m/s

Tosh’s Speed = 4 m/s

Tosh moves 1.5 m/s faster than Mac.

Explanation:

Tosh starts from an initial position of 12m and in a span of 3 seconds, (1.00 seconds to 4.00 seconds) he moves 12 meters.

So his speed is distance / time

s = 12 / 3

s = 4 m/s

Mac starts from an initial position of 2m and in a span of 4 seconds, he traveled 10m (2.00m to 12.00m).

Speed = Distance / time

s = 10 / 4

s = 2.5 m/s

Answer:

B

Explanation:

The substance with the lowest density is Sample 1 with a density of approximately 2.31 g/cm³ .

Density is a physical property that describes the amount of mass per unit volume of a substance. It can be calculated by dividing the mass of a substance by its volume.

To determine the substance with the lowest density, we need to calculate the density of each sample using the formula:

density = mass / volume

Sample 1: density = 30 g / 13 cm³ ≈ 2.31 g/cm³

Sample 2: density = 72 g / 20 cm³ = 3.6 g/cm³

Sample 3: density = 22 g / 2 cm³ = 11 g/cm³

Sample 4: density = 103 g / 41 cm³ ≈ 2.51 g/cm³

Comparing the densities, we can see that Sample 3 has the highest density (11 g/cm^3) and thus it is not the substance with the lowest density. Sample 2 has a density of 3.6 g/cm³ , which is higher than both Sample 1 (2.31 g/cm^3) and Sample 4 (2.51 g/cm^3).

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Answer:   By squeezing the balloon, you reduce the space the gas particles can occupy. As the particles are pushed a bit closer together, they collide with more, so the pressure from the moving gas particles increases. If the volume increases, its pressure decreases.

Hello! :3

I'm pretty sure you should be coloring the lines. The green line should be convergent, the blue line should be transformed,  and the red line should be divergent.

Hope this helps! I'm not 100% sure! :)))))

Answer:

transverse wave, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of transverse waves.

there is nothing there

Scientists could explore Europa’s oceans by using potent technologically advanced telescopes capable of deciphering the content beneath the ice crust.

The latest technologically advanced telescopes are potent optical devices that allow us to discover the presence of certain compounds not only in the atmosphere of other planets in the solar system but also the content on the surface (e.g, the water content).

These telescopes contain curved mirrors that gather and focus different spectra of light from the sky such as the Webb telescope which was launched by NASA in the final of 2021.

Therefore, with this data, we can see that technologically advanced telescopes are potent optical instruments that can be used to observe the presence of different compounds including water on the surface of a planet or its satellites such as in the case of Europe which is a satellite of Jupiter.

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The isotopes of any element have same number of protons inside them.

Cadmium is a chemical element with the symbol Cd and atomic number 48. It is soft, silvery and white metal.

Given is about Cadmium that it has eight naturally occurring isotopes.

Isotopes are the atoms of the same element which have same number of protons in them but the number of neutrons are different. Isotopes usually have same chemical properties, but they have different physical properties. Their can be stable and unstable isotopes. These unstable isotopes are also called radioisotopes, since they emit radiation. Thus, the isotopes have same number of protons.

Therefore, the isotopes of any element have same number of protons inside them.

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This results in a total estimate of approximately 10,000 billion billion, or 10^22, stars in the observable universe.

Given that a typical galaxy contains about 100 billion stars and there are approximately 100 billion galaxies in the observable universe, we can calculate the total number of stars by multiplying these two values together.

100 billion stars/galaxy * 100 billion galaxies = 10,000 billion billion stars

In scientific notation, 10,000 billion billion can be expressed as 10^22 stars. Therefore, it is estimated that there are approximately 10^22 stars in the observable universe, the estimated number of stars in the observable universe is approximately 10^22, or 10,000 billion billion. This estimation is based on the assumption of a typical galaxy containing 100 billion stars and there being approximately 100 billion galaxies in the observable universe.

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Answer:

a) 37.5N

b) 9.375Joules

Explanation:

a) According to Hooke's law

F = ke

k is the spring constant

e is the extension;

F = 150 * 0.25

F = 37.5N

b) Work done on the spring = 1/2ke^2

Work done on the spring = 1/2 * 150 * 0.25^2

Work done on the spring  = 75 * 0.0625

Work done on the spring  = 9.375Joules

(a)  The force required to stretch the spring is of 37.5 N.

(b)  The work done on the spring is of 4.6775 J.

Given data:

The force constant of a spring is, k = 150 N/m.

The stretching distance of spring is, x = 0.25 m.

(a)  

When some force is experienced on the spring, then due to this force then it will displace. Then, the expression for the force applied on the spring is given as,

\(F = k \times x\)

Solve by substituting the values as,

\(F = 150 \times 0.25\\\\F = 37.5 \;\rm N\)

Thus, we can conclude that the force required to stretch the spring is of 37.5 N.

(b)

And the expression for the work done on the spring is given as,

\(W = \dfrac{1}{2}kx^{2}\)

Solving as,

\(W = \dfrac{1}{2} \times 150 \times 0.25^{2}\\\\W = 4.6875 \;\rm J\)

Thus, we can conclude that the work done on the spring is of 4.6775 J.

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Answer:

A system is a group of interrelated interacting, or interdependent parts that for a complex whole. A system is a group of interrelated interacting, or interdependent parts that for a complex whole.

Explanation: Hope this helps ;)

When a block is made of rough surfaces, the cylinders may eventually wear to the point where repairs are ineffective.

This is the force which occurs when two surfaces slide against each other. A rough surface have more friction than a smooth surface.

Friction causes wearing out of surfaces and may render repair works done ineffective in this case.

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Answer:

a. -39.2 m/s; -78.4 m

b. -31.2 m/s; -46.4 m

c. -47.2 m/s; -110.4 m

Explanation:

We are given/can infer these variables:

We want to find the displacement and the final velocity of the rock.

We can use this equation to find the final velocity:

Plug in the known variables into this equation.

The final velocity of the rock is -39.2 m/s.

Now we can use this equation to find the displacement of the rock:

Plug in the known variables into this equation.

The displacement of the rock is -78.4 m.

We are given/can infer these variables:

We can use this equation to find the final velocity:

Plug in the known variables into this equation.

The final velocity of the rock is -31.2 m/s.

We can use this equation to find the displacement:

Plug in known variables:

The displacement of the rock is -46.4 m.

We are given/can infer these variables:

We can use this equation to find the final velocity:

Plug in the known variables into this equation.

The final velocity of the rock is -47.2 m/s.

We can use this equation to find the displacement:

Plug in known variables:

The displacement of the rock is -110.4 m.

The 3 function options in the what-if-anlysis dropdown are data table, scenario manager and goal seek.

The three function options in the ”What-If Analysis” dropdown menu typically found in spreadsheet software like Microsoft Excel are:

1. Data Table: This option allows you to create a table that shows the impact of changing one or two input variables on the results of a formula. It is useful for conducting sensitivity analysis and understanding how changes in input values affect the final outcome.

2. Scenario Manager: This option enables you to create and manage different scenarios by specifying different sets of input values. It allows you to compare and analyze the results of different scenarios without modifying the original data or formulas directly.

3. Goal Seek: This option helps you find the input value needed to achieve a specific goal or target result in a formula. It allows you to specify a desired outcome and Excel will determine the value of an input variable required to achieve that result.

These functions provide tools for performing various types of “what-if” analyses, allowing you to explore different scenarios, evaluate the impact of changes, and determine the necessary inputs to achieve desired outcomes within your spreadsheet models.

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Answer:

The weight is distributed throughout the airplane, but we can often think of it as collected and acting through a single point called the center of gravity. In flight, the airplane rotates about the center of gravity, but the direction of the weight force always remains toward the center of the earth.

Explanation:

Answer:

1. heating

2. entertainment

3. cooling

4.educational purpose

5.comfort

The boiling water trick, where hot water thrown into cold air instantly vaporizes into a mist, typically requires temperatures at or below freezing (0 degrees Celsius or 32 degrees Fahrenheit).

Exact temperature required for this trick to work depends on a variety of factors, including the temperature and humidity of the surrounding air, the altitude, and the initial temperature of the hot water.

Generally, the colder the air temperature and the hotter the water, the more dramatic the effect will be. However, it's important to note that this trick can be dangerous if not done properly, as hot water can cause serious burns if comes into contact with skin or clothing. It's important to follow proper safety precautions.

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todjghozjfh-xjdfg .FExplanation:dthgzdfhsfhfh

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The downward force exerted by the atmosphere on a football field whose dimensions are 110 m by 49 m is 546×10⁶ N.

The atmospheric pressure or air pressure is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer. The force of buoyancy exerted by the atmosphere on a balloon is B in the upward direction and remains constant. The force of air resistance on the balloon acts opposite to the direction of velocity and is proportional to it. The total downward force exerted by the atmosphere on a football field is found using the atmospheric pressure. So, P atm. A=F. Where A is the area of the football field, A=a⋅b=110 m⋅49m. Finally F=101.3 kPa. 110.49 m² = 546×10⁶ N.

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Answer:

Approximately \(5.56 \times 10^{-7}\; {\rm m}\) in this glass.

Explanation:

The frequency of a wave is the number of periods that this wave completes per unit time.

The speed of a wave is the distance that this wave travels in unit time.

Thus, dividing the speed \(v\) of the wave by the frequency \(f\) of this wave would give the distance that this wave covers in each period (cycle) of this wave. By definition, the distance that a wave covers in each period is precisely the wavelength of this wave. Therefore, an equation for the wavelength \(\lambda\) of a wave would be:

\(\begin{aligned}\text{wavelength} &= \frac{\text{speed}}{\text{frequency}}\end{aligned}\).

\(\begin{aligned}\lambda &= \frac{v}{f}\end{aligned}\).

Note that \(1\; {\rm Hz} = 1\; {\rm s^{-1}}\).

The wavelength of this light in this glass would be:

\(\begin{aligned}\lambda &= \frac{v}{f} \\ &= \frac{2.0 \times 10^{8}\; {\rm m\cdot s^{-1}}}{3.6 \times 10^{14}\; {\rm s^{-1}}} \\ &\approx 5.56 \times 10^{-7}\; {\rm m}\end{aligned}\).

Answer: For the angles below 40, The air time and range are directly proportional meaning that if air time increases, the range increases. Like said earlier, the total traveled distance in the x-direction depends on the initial velocity and time.

Answer:

hey

Explanation:

hey

He's accelerating at 3 m/s² .  That means his speed is increasing by 3 m/s every second.At the end of 8 seconds, his speed is (8 x 3 m/s)  =  24 m/s .He's been moving south for the whole 8 seconds.So at the end of that time, his velocity is                          24 m/s south .

Answer:

when you think back on something or reconsider something you have done.

A grocery sack can withstand a maximum of 235 n before it rips. will a bag holding 18.5 kg of groceries that is lifted from the checkout counter at an acceleration of 5.0 m/s2 hold is 51.98N

Threshold force is 235N

Force or weight = mg

Where m = mass of object and g is the acceleration due to gravity

Mass of object it holds = 18.5kg

g = 9.81m/s^2

a = 7m/s^2

Because a is acceleration against gravity

Minimum force applied to lift the bag = (18.5 × (-7)) kgms^2

= -129.5N

Force of gravity, i.e its weight

= (18.5 × 9.81)N

= 181.48N

Net force acting on the bag from above =

(181.48 + (-129.5)) N

= 51.98N

Hence, An acceleration of 5.0 m/s2 hold is 51.98N

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