escribe each of the three key processes that led the solar nebula to take the form of a spinning disk. what observational evidence supports this scenario?
Answers
The three key processes that led the solar nebula to take the form of a spinning disk are gravitational collapse, conservation of angular momentum, and disk accretion.
Observational evidence supporting this scenario includes the presence of protoplanetary disks around young stars, the alignment of planetary orbits in our solar system, and the flattened shape of planetary systems in other star systems.
The formation of a spinning disk in the solar nebula is attributed to three key processes. Firstly, gravitational collapse occurs as the nebula contracts under the influence of its own gravity, leading to a flattening of the material.
Secondly, the conservation of angular momentum causes the rotating nebula to spin faster as it contracts, resulting in the formation of a disk-like structure.
Finally, disk accretion takes place as solid particles within the disk collide and merge, gradually growing into planetesimals and protoplanets.
Observational evidence supporting this scenario includes the presence of protoplanetary disks observed around young stars, which exhibit a flattened shape and provide a reservoir of material for planet formation.
Additionally, the alignment of planetary orbits in our own solar system suggests a common origin from a spinning disk.
The flattened shape of planetary systems detected in other star systems through observations and imaging further supports the formation of spinning disks as a common phenomenon during planet formation.
These pieces of evidence contribute to our understanding of the processes that shaped the solar system and provide insights into the formation of planetary systems beyond our own.
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Related Questions
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A student pushes a 40 Kg cart with a force of 300 Newtons. What is its
acceleration?
Answers
Answer:
7.5 m/s2
Explanation:
F = ma
300 = 40 kg (a)
divide both sides by 40 to single out the variable a (acceleration)
300/40 = 7.5 m/s2
What quantities are related by Ohm's law? Check all that apply. voltage conductivity current resistance insulation
Answers
Answer: Current, resistance and voltage are the quantities which are related by Ohm's law.
Explanation:
A law which states that electric current is directly proportional to voltage and inversely proportional to resistance is called Ohm's law.
Mathematically, it is represented as follows.
\(I = \frac{V}{R}\)
where,
I = current
V = voltage
R = resistance
This means that the quantities related by Ohm's law include current, voltage and resistance.
Thus, we can conclude that current, resistance and voltage are the quantities which are related by Ohm's law.
Answer:
The answer is 1, 3, 5.
✓ voltageX conductivity✓ current✓ resistanceX insulationExplanation:
did it right
A worker places a large plastic waste container with a mass
of 84 kg on the ramp of a loading dock. The ramp makes an
angle of 22° with the horizontal. The worker turns to pick up
another container before pushing the first one up the ramp. If
the coefficient of static friction is 0.47, will the crate slide
down the ramp?
Answers
The crate will not slide down the ramp since the force of friction is greater than parallel force.
What is the frictional force on the container?The force of friction resisting the motion of the container is calculated by applying the following formula.
Ff = μmg cosθ
where;
θ is the angle of inclination of the inclineμ is the coefficient of frictionm is the massg is acceleration due to gravityFf = 0.47 x 84 kg x 9.8 m/s² x cos (22)
Ff = 358.7 N
The parallel force on the container is calculated as follows;
Fp = mg sinθ
Fp = 84 x 9.8 x sin (22)
Fp = 308.38 N
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Why is “soft” iron used for the core of an electromagnet?
It is difficult to magnetize.
It has no magnetic domains.
It is a permanent magnet.
It is easily magnetized.
Answers
Answer:
It is difficult to magnetize.
HELP PLEASE. WILL GIVE BRAINLIEST!!!
Carlos made a study chart about changes to the environment that are caused by humans.
X
-Results from introducing harmful substances into the environment
-Causes an increase in ultraviolet radiation that reaches Earth
Y
-Results from the rising human population
-Causes the disappearance of many species in a short amount of time
Which headings best complete the chart?
A-X: Ozone Layer Destruction
Y: Mass Extinction
B-X: Long-Term Changes
Y: Short-Term Changes
C-X: Short-Term Changes
Y: Long-Term Changes
D-X: Mass Extinction
Y: Ozone Layer Destruction
Answers
Answer:
its A
Explanation:
Just took the exam
Answer:
a
Explanation:
Why does the comet have tails
Answers
Answer:
Comets leave long beautiful tails when they come close to the sun. ... But when it approaches the sun, the heat evaporates the comet's gases, causing it to emit dust and microparticles (electrons and ions). These materials form a tail whose flow is affected by the sun's radiation pressure.
Explanation: I just searched it up on the internet lol.
Answer:
when it approaches the sun, the heat evaporates the comet's gases, causing it to emit dust and micro particles
Explanation:
:)
of the following, which color represents the lowest surface temperature for a star?
A. Red
B. Blue
C. White
D. Black
Answers
D. Black represents the lowest surface temperature for a star.
What is surface temperature?Surface temperature refers to the temperature of the surface of an object or a material. In astronomy, it usually refers to the temperature of the outer visible layer or "surface" of a star. This temperature can be estimated by measuring the radiation emitted by the star and analyzing its spectrum.
Here,
Black color refers to objects that absorb all colors and do not reflect any, indicating that they do not emit any significant radiation. Stars with low surface temperatures are not hot enough to emit visible light, so they appear black or invisible to the eye. However, they still emit some radiation, usually in the form of infrared light, which can be detected using specialized equipment.
Of the colors listed, red is actually the color associated with the lowest-temperature stars that are visible to the eye, while blue is associated with the hottest. However, stars with even lower surface temperatures will not emit visible light and would be invisible or appear black.
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Weight lifting has become very popular in the last few years. When lifting a
barbell, which grip will exert less force on the lifter's arms, one where the
hands are close together in the middle of the bar, or one where the hands
are close to the weights? Explain.
Answers
Gravity pulling below and your hand pulling up are the two external forces that are pulling on the barbell in a vertical direction.
What forces are acting when lifting weights?By exerting force that is produced by the person's muscles, the weights are raised. It is therefore a muscular force. exercise forms. The nature of weight training is typically isotonic. This indicates that a particular muscle is being utilized and contracting as a result of a weight, causing muscle contractions in that region of the body.
Kicking is a pushing force since it applies pressure to the body's center of mass, whereas lifting, opening, and picking are pulling actions. Frictional force is stronger when pushing than when pulling.
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when a star begins to run out of fuel, what two types of stars can it become
Answers
Answer:
A red giant or red super giant then a white dwarf
Explanation:
This also depends on what the star classification was to begin with.
a mass weighing 54 pounds stretches a spring 3.84 inches. determine the amplitude and period of motion if the mass is initially released from a point 8 inches above the equilibrium position with an upward velocity of 5 ft/s
Answers
The restoring force F of a spring is proportional to its displacement x from its equilibrium position. This law is called Hooke's law, and it can be written mathematically as follows:
F = − kx
where k is the spring constant
The period of motion can be determined by the following formula:
T=2π\(\sqrt{\frac{m}{k} }\)
where, m = the mask = spring constant
Let the amplitude of motion be A. The total energy of a mass attached to a spring is given by:
E=\(\frac{1}{2}\)k\(A^2\)
The maximum kinetic energy of the mass is given by
K = \(\frac{1}{2}\)m\(v^2\)
The maximum potential energy is given by
U = \(\frac{1}{2}\)k\((A + x_0)^2\)
where \(x_0\) is the displacement of the mass from the equilibrium position when it is released from a point 8 inches above the equilibrium position with an upward velocity of 5 ft/s. The maximum potential energy is equal to the maximum kinetic energy.
Equating the two, we have:
\(\frac{1}{2}\)m\(v^2\) = \(\frac{1}{2}\)k\((A + x_0)^2\) ⇒ A + \(x_0\) = \(\sqrt{\frac{mv^2}{k} }\)
Using this value of A + \(x_0\), we can determine the amplitude of motion as follows:
A = \(\sqrt{\frac{mv^2}{k} }\) − \(x_0\)
The mass in pounds can be converted to slugs as follows: \(m = \frac{54}{32.2} = 1.68\) slugs.
The displacement x of the spring from its equilibrium position can be determined as follows: \(x = \frac{3.84}{12} = 0.32\) ft.
The spring constant k can be determined using the formula:
\(k=\frac{k}{x}\)
where F is the force exerted on the spring when it is stretched by the mass.
The force F can be determined using the formula: F = m * g where g is the acceleration due to gravity.
Substituting the values, we get: F = 1.68 * 32.2 = 54.1 lbf
Substituting these values into the formula for k, we get \(k =\frac{54.1}{0.32} = 169.0\) lbf/ft.
The period of motion can be determined using the formula: T = 2π\(\sqrt{\frac{m}{k} }\).
Substituting the values, we get: T = 2π\(\sqrt \frac{1.68}{169.0}\) = 0.504 s.
Using the value of \(x_0\), we can determine the amplitude of motion as follows: A = \(\sqrt{\frac{mv^2}{k} }\) − \(x_0\).
Substituting the values, we get: A = \(\sqrt{ \frac{1.68*\frac{25}{9} }{169.0}} - 0.67A\)= 0.062 ft or 0.74 .
When a mass is hung on a spring, it extends from its original length to a new length. This change in length is known as the displacement. The point where the mass hangs without moving up or down is known as the equilibrium position. The restoring force, which is proportional to the displacement from the equilibrium position, acts on the mass when it is displaced from its equilibrium position. This law is known as Hooke's law. The constant of proportionality is known as the spring constant. The period of motion of the mass attached to the spring can be determined using the formula T = 2π\(\sqrt{\frac{m}{k} }\), where m is the mass and k is the spring constant. The amplitude of motion is the maximum displacement of the mass from its equilibrium position.
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is time a scaler or a vector? explain.
Answers
Answer:
scalar Besause it has magnitude but no direction
For the 14.317 g sample of sodium sulfate, how many molecules of sodium sulfate do you have?
Answers
The 14.317 g sample of sodium sulfate, you have approximately 6.058 × 10^22 molecules of sodium sulfate.
To find the number of molecules of sodium sulfate in a sample, you need to use Avogadro's number and the molar mass of sodium sulfate.
1. Calculate the number of moles of sodium sulfate in the sample by dividing the given mass (14.317 g) by the molar mass of sodium sulfate.
The molar mass of sodium sulfate is 142.04 g/mol.
Number of moles = mass / molar mass
= 14.317 g / 142.04 g/mol
= 0.1007 mol (rounded to four decimal places)
2. Use Avogadro's number,
which is 6.022 × 10^23 molecules/mol, to convert the number of moles of sodium sulfate to molecules.
Number of molecules = number of moles × Avogadro's number
= 0.1007 mol × 6.022 × 10^23 molecules/mol
≈ 6.058 × 10^22 molecules
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A boxer hits a punching bag and gives it a change in momentum of 12 kg•m/s
over 7.0 ms.
Answers
The magnitude of the net force on the punching bag is 1714N
What is momentum?momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle. See Newton's laws of motion.The change in momentum of an object is the product of mass and the change in velocityThe magnitude of the netforce can be calculated using 12kg/7.0msBut we can convert 7ms to "s" = 7× 10^-3sF= Force = 12/7×10^-3= 1714NHence, the magnitude of the net force on the punching bag is 1714NTo learn more about momentum refers to:
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The space shuttle travels at 15,000 m/s in order to enter
earth atmosphere it changes it's speed to 10,000 m/s over
100 seconds. What is the space shuttles acceleration?
Answers
Answer:
10,000 m/s per 100 seconds
Please help me! Today's Daily Question is:
What color is the sky when a volcano erupts?
I will give Brainliest to the correct answer, or whoever answers first. Have a great day or night.
Answers
Answer:
Red I'm pretty sure
Explanation:
Vocanic ash and sunsets. Volcanic eruptions can inject millions of tonnes of dust and gaseous sulfur dioxide into the stratosphere. ... The dust and aerosol produce vivid sunset and twilight effects like the intense yellow-red horizon and purple-pink glows of the photograph.
The sky is a Dark Black.
Explanation:
The smoke from the volcano fills the sky with black smoke
How do you calculate time interval?
Answers
Frequency is measured in hertz (Hz) (frequency = cycles/seconds). Simply divide 1 by the frequency that is equal to the time interval.
Time interval=1/ frequency
What is frequency?
The number of waves that travel through a spot in a particular period of time is defined as frequency. The wave's frequency is inversely proportional to its time period. As a result, the frequency may be defined as the number of times the motion occurs in one second. T represents the time period, whereas f represents the frequency. The relationship between T and f is denoted as Frequency, f=1/TUnit of the time period is second while the unit of frequency is Hertz.Learn more about frequency https://brainly.com/question/5102661
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A cup is sliding down an inclined surface that is not smooth. What is the correct free body diagram for the body?
Answers
Answer:
Let's see the forces in the cup:
The gravitational force will act in the plane parallel to the inclined surface.
Because the surface is not smooth, we will have a friction force, which direction is opposite to the velocity vector.
The component of the gravitational force perpendicular to the surface is canceled with the normal force, so we will not have that in our diagram.
The correct option is not shown, so i will draw a simple sketch so you can identify the correct option:
Where the direction of the velocity is shown so we can know the direction of the friction force,
And we assume that both forces are applied on the center of mass, this is an oversimplified case, but this is the approach we usually take in this type of problems.
Answer:
For me it was B. Fn is going to the NW. Ff is going NE. Fg is going straight down.
Explanation:
In a ______ solar system, the planets orbit around the sun.
A. Geocentric
B. Monolithic
C. Heliocentric
D. Pericentric
Answers
Have a good day!
what is the process of subduction
Answers
Answer:
Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones.
what is the longest wavelength of light that can cause photoelectron emission from a metal that has a work function of 2.20 ev
Answers
Longest wavelength of light for question above is approximately 564.9 nm.
Let's discuss it further below.
The longest wavelength of light that can cause photoelectron emission from a metal with a work function of 2.20 eV can be calculated using the equation:
E = hc/λ
where E is the energy in electron volts (eV), h is Planck's constant (4.135667696 × 10⁻¹⁵ eV·s), c is the speed of light (2.99792458 × 10⁸ m/s), and λ is the wavelength in meters.
First, we need to find the energy (E) corresponding to the work function, which is 2.20 eV.
Next, we'll rearrange the equation to solve for λ:
λ = hc/E
Now, plug in the values for h, c, and E:
λ = (4.135667696 × 10⁻¹⁵ eV·s × 2.99792458 × 10⁸ m/s) / 2.20 eV
λ ≈ 5.649 × 10⁻⁷ m
To convert this to nanometers, multiply by 10⁹:
λ ≈ 564.9 nm
Longest wavelength of light causing photoelectron emission from metal with a work function of 2.20 eV is approximately 564.9 nm.
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Which statement is true about Car A?
Car A has a velocity of 40 km/hr
west.
Car A has a velocity of 40 km/hr
east.
Car A has the same velocity Car E.
Car A has a velocity of 40 km/hr.
Answers
Answer:
Car A has a velocity of 40 km/hr west.
Explanation:
The velocity of an object is a vector quantity. It has both magnitudes as well as direction.
Arrows are used to show direction.
Car A is moving towards west. Car B is moving towards east-south direction. Car C is moving towards South direction. Car E is moving towards North direction.
So, the correct option is (a) i.e. Car A has a velocity of 40 km/hr west.
the base of a cumulus cloud marks the altitude at which rising air cools to the dew point.
Answers
The base of a cumulus cloud marks the altitude at which rising air cools to the dew point of temperature, leading to condensation and the formation of the cloud.
Cumulus clouds are formed as a result of warm air rising and encountering cooler air at higher altitudes, this process is known as convection. As the warm air rises, it expands and cools adiabatically, meaning that the temperature decreases due to the decrease in air pressure. The dew point is the temperature at which the air becomes saturated and can no longer hold all the water vapor present. When the rising air cools to the dew point, the water vapor starts to condense into tiny water droplets or ice crystals, forming a cloud. The altitude at which this condensation occurs and the cloud base is formed depends on the temperature and humidity profile of the atmosphere.
Typically this clouds have well-defined, sharp edges and a flat base, which is a result of the uniform dew point temperature at that altitude. The height of the cloud base can vary depending on the weather conditions and the location, but it is generally observed at around 1,000 to 3,000 meters above the ground. In summary, the base of a cumulus cloud represents the altitude where the rising air cools down to the dew point temperature, leading to condensation and the formation of the cloud, this process is influenced by atmospheric temperature and humidity profiles, as well as local weather conditions.
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In a solution, the solvent is...
Answers
Question 8
If a cheetah can run at a speed of 100 km/h for the initial 500 m of its chase, h
much time would it take to catch its prey that is at a distance of 100 m?
O 1.5 s
O 2.3s
O 3.6s
O 4.8s
Answers
Answer:
3.6 s
Explanation:
100 km/hr =27.77 m/s
100/27.77=3.6 sec
Gracie chases the Frisbee for a displacement of 4.35 m while traveling 6.35 m/s. For how much time was Gracie running?
Answers
Answer:
2.34
Explanation:
Answer:
2.34
Explanation:
Hope this helps! :D
express your answer in kilometers per hour to three significant figures.
Answers
Approx. 243 km/hr is the significant figure when 0.550 In/Ms is converted to Km/Hr.
What are significant figures?Significant figures are the meaningful digits in a number that express the precision of a measurement. They include all digits that are known with certainty, as well as the first digit that is uncertain. For example, in the number 0.0056, there are three significant figures: 5, 6, and the zero immediately to the left of the decimal point. Rules for determining the number of significant figures in a measurement include counting all non-zero digits, counting zeros that are between non-zero digits, and counting trailing zeros after the decimal point only if the number has a decimal point.
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If a moving ball is hit by another moving ball ,what effect of force can be observed in such a situation?
Could someone please help me..??
: ))
please give an explanation if possible..!
Answers
Answer:
A force acting on an object causes the object to change its shape or size
Explanation:
what is the area of a retangular plate whose sedes measine 27.3 cm by 17.5 cm?
Answers
Answer:
477.75cm^2
Explanation:
Area formula is L x W
27.3cm x 17.5cm = 477.75cm^2
Answer:
477.75
Explanation:
multiply one side by the other
Please answer all of these questions and you will get the brain list
Answers
Answer:
1=900j
2=140j
3=5m
Explanation:
1,
work=force×displacement
w=450×2
w=900j
2,
w=f×s
w=70×2
w=140j
3,
w=f×s
200=40×s
200/40=s
s=5m
Badminton is only an individual sport
True
False
(This is gym)
Answers
Answer:
false
Explanation:
Answer:
False
Explanation:
Badminton is only an individual sport
True
False
(This is gym)