What is the primary visible color of an emission nebula?

Lines with irregular meter and length are called Free Verse.

Free Verse, a literary device in literature refers to the poetry which is free from defects of regular rhythm or meter and length. There is no rhythm of the words, and no rhyme scheme in such kind of literary pieces. These kind of poems simply do not follow the rules of poetry.

Final answer:

Dark matter is an unseen substance that makes up about 90% of the universe's mass, detectable through its gravitational effects on visible matter. It exists in a halo around galaxies and is essential for understanding the universe's composition and expansion fate.

Explanation:

The unseen matter that may constitute as much as 90% of the universe is known as dark matter. This dark matter is not directly observable because it does not emit or reflect any electromagnetic radiation. However, its existence is inferred from gravitational effects on visible matter, radiation, and the large-scale structure of the universe.

For example, galaxies contain far more mass than can be accounted for by the visible objects we can observe, and this extra mass is attributed to dark matter. The rapid rotation of stars on the outskirts of galaxies is one such gravitational effect indicating the presence of dark matter in a halo around the galaxies.

Discovering the true nature of dark matter is crucial as it may provide insights into particle physics and cosmology. There are theories that dark matter could be composed of neutrinos with a small mass or entirely new types of particles that have never been detected.

The understanding and evidence of dark matter continue to evolve, highlighting its importance in the universe's critical density and its possible role in the ultimate fate of the cosmic expansion.

Static frictional force matches the applied force up to its maximum, after which the books slide, switching to kinetic friction. Minimum static friction is zero and occurs with no applied force. When resting books are subjected to a force below the static threshold, static friction acts.

Frictional Forces and a Stack of Books

When you begin to pull on a force scale attached to a stack of books lying on a table, the size of the static frictional force initially increases to match the applied force, up to its maximum value. If the applied force exceeds this maximum static frictional force, the books will begin to slide across the table, transitioning to a state where kinetic friction is acting on them. The minimum size for the static frictional force is observed when there is no applied force, and in such cases, it is effectively zero. While the books are at rest and a force is exerted that is below the static friction threshold, the type of friction acting is still static friction.

Natural disasters

Answer:

to produce spark in engen

Explanation:

The main function of an ignition safety switch in an automobile is to prevent the engine from starting without the key being inserted into the ignition.

The main function of an ignition safety switch in an automobile is to prevent the engine from starting without the key being inserted into the ignition. It acts as a security measure to prevent unauthorized individuals from starting the vehicle. The switch is typically located close to the steering column and is connected to the ignition system.

When the key is inserted and turned in the ignition, it completes the circuit and allows electrical current to flow to the ignition system, which then starts the engine. If the ignition safety switch is not engaged or faulty, the circuit remains incomplete, and the engine will not start even if the key is turned.

Approximately 235 oscillations will have been completed when the amplitude of the oscillator decreases to 30% of its initial value.

To solve this problem, let's first understand the concept. The amplitude of an oscillator in simple harmonic motion decreases over time when air is admitted due to damping. We'll use the concept of exponential decay to model the decrease in amplitude.

The formula for exponential decay is:

[tex]\[ A(t) = A_0 \times e^{-\frac{t}{\tau}} \][/tex]

Where:

- A(t) is the amplitude at time t.

- [tex]\( A_0 \)[/tex] is the initial amplitude.

- [tex]\( \tau \)[/tex] is the time constant, which depends on the damping coefficient.

- e is the base of the natural logarithm.

Given that the amplitude decreases to 60% of its initial value in 50 seconds, we can use this information to find the time constant [tex]\( \tau \).[/tex]

[tex]\[ 0.6A_0 = A_0 \times e^{-\frac{50}{\tau}} \][/tex]

Solving for [tex]\( \tau \):[/tex]

[tex]\[ e^{-\frac{50}{\tau}} = 0.6 \][/tex]

[tex]\[ -\frac{50}{\tau} = \ln(0.6) \][/tex]

[tex]\[ \tau = -\frac{50}{\ln(0.6)} \][/tex]

Now, we can use the value of [tex]\( \tau \)[/tex] to find the time it takes for the amplitude to decrease to 30% of its initial value.

[tex]\[ 0.3A_0 = A_0 \times e^{-\frac{t}{\tau}} \][/tex]

Solving for t:

[tex]\[ e^{-\frac{t}{\tau}} = 0.3 \][/tex]

[tex]\[ -\frac{t}{\tau} = \ln(0.3) \][/tex]

[tex]\[ t = -\tau \times \ln(0.3) \][/tex]

Now, we need to find the number of oscillations completed during this time. We know that the frequency of oscillation is 2.0 Hz, which means the oscillator completes 2 oscillations every second.

Number of oscillations = frequency × time

Number of oscillations = 2.0 × t

Let's compute these values.

First, let's calculate the value of [tex]\( \tau \):[/tex]

[tex]\[ \tau = -\frac{50}{\ln(0.6)} \][/tex]

[tex]\[ \tau \approx -\frac{50}{-0.5108} \][/tex]

[tex]\[ \tau \approx 97.85 \, \text{s} \][/tex]

Now, let's find the time it takes for the amplitude to decrease to 30% of its initial value:

[tex]\[ t = -\tau \times \ln(0.3) \][/tex]

[tex]\[ t \approx -97.85 \times \ln(0.3) \][/tex]

[tex]\[ t \approx 97.85 \times 1.2039 \][/tex]

[tex]\[ t \approx 117.65 \, \text{s} \][/tex]

Now, let's find the number of oscillations completed during this time:

Number of oscillations [tex]= 2.0 \times t[/tex]

Number of oscillations [tex]\approx 2.0 \times 117.65[/tex]

Number of oscillations [tex]\approx 235.3[/tex]

Since the number of oscillations must be a whole number, we can assume it to be 235 oscillations.

Therefore, when the amplitude is 30% of its initial value, approximately 235 oscillations will have been completed.

An untethered astronaut can return to the shuttle by using conservation of momentum or a safety jetpack known as Simplified Aid for EVA Rescue (SAFER). The first method involves throwing an object in the opposite direction, and the other involves using SAFER to propel back.

If an astronaut finds themselves adrift in space without a tether, their best bet would be to try and use conservation of momentum to return to the shuttle. They can do this by throwing an object in the opposite direction they wish to travel -- such as a tool or even their own glove. This action would propel them back towards the shuttle due to Isaac Newton's Third Law of Motion: For every action, there is an equal and opposite reaction.

Additionally, astronauts carry a safety jetpack called a Simplified Aid for EVA Rescue (SAFER) during spacewalks. They could use this to propel themselves back towards the shuttle.

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Answer:

Wake

Explanation:

As a boat moves through a water body (sea, river or ocean), the propeller causes the water to be separated as the boat moves. This separated water forms a new pattern based on the disturbance conferred by the boat. The disturbed water forms a visible huge flow of water sideways and backwards (based on the speed, size and weight of the boat). This disturbed water is referred to as the wake of the boat.    

The weight of a 255-kg object on Jupiter is approximately 1421.6 pounds, after converting kilograms to pounds and adjusting for Jupiter's greater gravitational force.

To calculate the weight of a 255-kg object on Jupiter, we need to convert the mass in kilograms to pounds and then consider Jupiter's stronger gravitational pull. The weight calculation on Earth uses the conversion where 1 kg is equivalent to 2.205 pounds. However, since Jupiter's gravity is approximately 2.53 times that of Earth, we must multiply the Earth weight by this factor. Using the provided conversion factor, 255 kg on Earth is equivalent to 255 kg × 2.205 lb/kg which is approximately 561.975 lb. To find the weight on Jupiter, multiply this result by Jupiter's gravity factor: 561.975 lb × 2.53 = 1421.59725 lb. Considering significant figures based on the conversion factor of pounds and tenths place rounding, the weight would be reported as 1421.6 lb.

The people who see society as a collection of interconnected components that cooperate to create a stable social order are said to use a Functionalist Perspective. Hence, option D is correct.

Each component of society is interrelated and contributes to the stability and smooth operation of society as a whole, according to the functionalist perspective in sociology. For instance, the government pays for the education of the family's children, who then pay taxes that the state needs to function.

In other words, the family depends on the school to assist kids in getting decent careers as adults, so they can support and raise their own families.

If everything works out, society's constituent elements provide production, stability, and order. If things do not go as planned, the components of society must then adjust to reestablish a new order, stability, and productivity. 

Hence, the people who see society as a collection of interconnected components that cooperate to create a stable social order are said to use a Functionalist Perspective.

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Answer:

I think is 8.5" x 11"

Explanation:

Among the foods mentioned - ground beef, pork, vegetables, and chicken - chicken is the one that must be cooked to at least 165°F to safely consume and ensure all harmful bacteria have been killed.

Out of the foods listed - ground beef, pork, vegetables, and chicken - the one that must be cooked to at least 165°F (73.9°C) is chicken.

Poultry, including chicken, should be cooked to a minimum internal temperature of 165°F as recorded on a food thermometer, to kill off any harmful bacteria that may be present. The safe minimum cooking temperature for ground meat, such as ground beef and pork, is lower at 160°F. Vegetables can be eaten raw or cooked to any preferred temperature.

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The question pertains to the principle of continuity in fluid dynamics. When fluid flows from a wider to a narrower part of a pipe, its velocity increases to ensure that the mass flow rate remains constant. The velocity at the restriction can be found by plugging the appropriate area and velocity values from the wider part of the pipe into the continuity equation.

The subject in question relates to the physics principle of fluid dynamics. Specifically, we're discussing the continuity equation, which states that the mass flow rate must be constant throughout the pipe, irrespective of changes in the pipe's diameter. This is because the fluid is incompressible, meaning the same amount of fluid must flow past any point in the tube in a given time to ensure continuity of flow. Consequently, when the cross-sectional area of the pipe decreases, the velocity increases.

The formula that represents the continuity equation is A₁V₁= A₂V₂, where A represents the cross-sectional area of the pipe and V represents the velocity of the fluid. To find the velocity at the restriction (V₂), we must plug in the values for A₁, V₁, and A₂. Here, A₁ is the cross-sectional area of the larger part of the pipe, V₁ is the velocity in the larger pipe, and A₂ is the cross-sectional area of the restricted part.

To calculate A₁ and A₂, we use the formula for the area of a circle, which is A=πr². For A₁, r (radius) is half of the larger diameter, that is, 2 cm and for A₂, r is 1 cm (half of the restricted diameter). Substituting these values into the continuity equation will yield the desired velocity at the restriction (V₂).

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Final answer:

Compared to fresh water, a ship displaces less volume of salt water because salt water is denser, which means the ship will float higher in salt water.

Explanation:

When a ship floats in both fresh water and salt water, the volume of water displaced in the salt water is less compared to fresh water. This is because salt water is denser than fresh water. According to Archimedes' Principle, an object submerged in a fluid will displace a volume of fluid equal to its own weight. Since salt water is denser, a ship doesn't need to displace as much volume of water in saltwater to equal its weight and achieve buoyancy. This is the main reason why a ship will float higher in salt water than in fresh water.

Answer:

Explanation:

Noise which falls under human hearing range means from 20 Hz to 20,000 hz has sound at every frequency. The audible range from human is 20-20,000 hz so every noise within this range is audible to humans. Some animals such as whale, dolphin, bat communicate( to get their prey) beyond this range.

If 3.5 paper clips = 1.0 pencils and your paper is 1.5 pencils long, then your paper would be 5.25 paper clips long.

It is defined as the multiplication factor used for the design of an object with respect to some other object. the scale is generally used to design prototype designs of large objects. It is also used in interior design planning rooms.

It is multiplied by the design dimension to get the actual size of the object or product.

As given in the problem If 3.5 paper clips = 1.0 pencils and your paper is 1.5 pencils long, this means the scale factor of the pencil as a paper clip is 3.5

1 pencil = 3.5 paper clips

1.5 pencils = 1.5 × 3.5 paper clips

                 = 5.25 paper clips

Thus, If 3.5 paper clips = 1.0 pencils and your paper is 1.5 pencils long, then your paper would be 5.25 paper clips long.

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The lattice breaks apart and the ions flow freely. Gradpoint answer