The temperature of boiling liquid will be 78°C.
To find the correct answer, we need to know about the upper and lower fixed points of the thermometer.
How to find the temperature of boiling liquid?The lower fixed point is measured by the melting temperature of pure water.Given that, the fundamental interval is 25cm, which is the separation between the upper and lower fixed points.We have the equation for the temperature as,[tex]T=\frac{x-x_0}{x_{100}-x_0} *100[/tex]
where,
[tex]x=[/tex] length of liquid at T temperature = 19.5cm.
[tex]x_0=[/tex] length of liquid thread at ice point = 0°C
[tex]x_{100}=[/tex] length of liquid thread at steam point = 25 cm.
Substituting values, we get,[tex]T=\frac{19.5-0}{25-0}*100\\ T=0.78*100=78^0C[/tex]
Thus, we can conclude that, the temperature of boiling liquid will be 78°C.
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Consider states with angular momentum quantum number l = 2. in units of ħ, what is the value of l?
With angular momentum quantum number l = 2. in units of ħ, the value of l will be 2.4494 h.
What is the angular momentum quantum number?The total angular momentum quantum number in quantum mechanics parametrizes the total angular momentum of a particular particle by combining its orbital angular momentum and intrinsic angular momentum.
Given the angular momentum quantum number l = 2. in units of ħ. Therefore, the value of L can be written as,
L = √[l (l + 1)]
L = √[2 (2 + 1)]
L = √[2 (3)]
L = √6
L = 2.4494 h
Hence, With angular momentum quantum number l = 2. in units of ħ, the value of l will be 2.4494 h.
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A mass m is attached to an ideal massless spring with spring constant k. In experiment 1 the mass oscillates with amplitude a, and period t. A student grabs the mass and brings it to rest before starting experiment 2. In experiment 2, the mass is set to oscillate with a larger amplitude of 3a. What is the period of the oscillation in experiment 2?.
The experiment's time period is unaffected by the change in amplitude in either experiment.
What are the variables that affect time in SHM?The time frame is provided by:
[tex]$T=2 \pi \sqrt{\frac{m}{k}}$[/tex]
where,
T = Time period.
M = mass.
k = spring constant.
We can see from the formula above that the only factors affecting the time period in a Simple Harmonic Motion (SHM) are the object's mass and spring constant. Any changes in the object's mass or the spring constant will cause the time period to adapt.
Describe the Spring Constant.The attribute is known as a spring's "spring constant" describes the relationship between the force acting on a spring and the displacement it causes. In other terms, it describes the stiffness and size of a spring's range of motion.
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What counteracts the relaxation pressures and promotoes the steady lund pressure?
Breathing exercises , Self - hypnosis , Enough sleep and meditation practice can counteracts the relaxation pressures and promotes the steady blood pressure
Their are several techniques which counteracts the relaxation pressures and promotes the steady blood pressure , that are
1) Breathing exercises
For this , one can focus on taking slow, deep breaths which is also called diaphragmatic breathing
2) Self - hypnosis
In this , one can learn to produce the relaxation response when prompted by a phrase
3) Enough sleep and meditation practice
The less you sleep, the higher your blood pressure may go. People who sleep six hours or less may have steeper increases in blood pressure.
The relaxation response (from meditation) helps decrease metabolism, lowers blood pressure, and improves heart rate, breathing, and brain waves," Benson says. Tension and tightness seep from muscles as the body receives a quiet message to relax.
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Suppose you drop a feather and a hammer on the moon from the same height at the same time. what will happen?
The feather fell at the same rate as the hammer.
The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second. The Moon's surface gravity is weaker because it is far less massive than Earth. A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.
Gravity accelerates both objects at the same rate, but if no other force than gravitational force act on the object , and as we know that air resistance affect the rate of fall but at moon their is no air resistance. Hence their is no other force acting on the feather and hammer than the gravitation force of moon .
Because the Apollo crew were essentially in a vacuum, there was no air resistance, the feather fell at the same rate as the hammer. This is exactly what Galileo had concluded hundreds of years before: all objects released together fall at the same rate regardless of mass.
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How will sunlight most likely affect a black shirt on a hot summer day? the temperature of the shirt will depend on how much sunlight is diffracted around the shirt. the temperature of the shirt will not change because the sunlight is transmitted through the shirt to the body. the temperature of the shirt will decrease because most of the light is reflected off of the shirt. the temperature of the shirt will increase because all wavelengths of light are absorbed by the shirt.
The correct answer is option (C) the temperature of the shirt will increase because all wavelengths of light are absorbed by the shirt.
The relationship of heat and light
Heat is a measure of the movement of particles in the body, the more particles move, the warmer the body becomes. When the body absorbs light radiation, its particles vibrate in accordance with the electromagnetic radiation's wavelengths, which causes an increase in the temperature with the increase in particle movement. The more wavelengths of radiation absorbed by an object, produces more heat.Learn more about the Wavelength of light with the help of the given link:
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Importance of knowledge of gravitational acceleration of planets in space exploration and continuity of life
Gravity has an effect on the ease of landing on moons and planets. And on leaving! Actually Earth is about as heavy a planet as one could want. It takes a lot of fuel to leave Earth and a huge amount of energy to ship anything from Earth. Hence the attraction of using the moon or Mars as a base for exploration. But if you have to ship everything to the moon and then transship to other destinations it’s a losing proposition. The only thing that would make it work would be the ability to find lots of water and oxygen on the moon.
The weight of air in a column 1-m2 in cross section that extends from sea level to the top of the atmosphere is?
From sea level to the top of the atmosphere, a column of air with a 1-m2 cross section weighs 101,000 N.
To find the answer we have to know about the pressure.
What is Pressure?The pressure at a point on a surface is the thrust acting per unit area around that point.[tex]Pressure, P=\frac{Thrust}{Area}=\frac{F}{A}[/tex]
A particular mass of air is contained in a column that rises from the ocean to the top of the atmosphere. Then,[tex]P=P_a=1.013*10^5 pascal[/tex]
Pa is the atmospheric pressure at the sea level.
By combining both the equations, we get the weight of air,[tex]\frac{F}{A}=P_a[/tex]
[tex]F=W=P_a*A=1.013*10^5*1=101300N[/tex]
Thus, we can conclude that, the weight of air in a column 1-m2 in cross section that extends from sea level to the top of the atmosphere is 101300N.
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What forms of water will be present in a 1. 0 l flask at 303 k containing a visible amount of liquid water (the vapor pressure of water at 303 k is 31. 8 mmhg)?
Liquid and gas forms of water will be present in a 1. 0 l flask at 303 k containing a visible amount of liquid water(the vapour pressure of water at 303 k is 31. 8 mmHg).
Because the problem mentions that there is liquid water visible in the flask, liquid must be one of the correct options. Additionally, liquid water has a vapour pressure of 31.8 mmHg at the given temperature, meaning there will 31.8 mmHg of gaseous water present as well, so the correct answer is liquid and gas.
Vapour pressure or equilibrium vapour pressure is defined as the pressure exerted by a vapour in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. The equilibrium vapour pressure is an indication of a liquid's evaporation rate.
It relates to the tendency of particles to escape from the liquid (or a solid). A substance with a high vapour pressure at normal temperatures is often referred to as volatile. The pressure exhibited by vapour present above a liquid surface is known as vapour pressure.
As the temperature of a liquid increases, the kinetic energy of its molecules also increases. As the kinetic energy of the molecules increases, the number of molecules transitioning into a vapour also increases, thereby increasing the vapour pressure.
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As a 4-10 solar mass star leaves the main sequence on its way to becoming a red supergiant, its luminosity:____.
As a 4-10 solar mass star leaves the main sequence on its way to becoming a red supergiant, its luminosity: remains roughly constant.
A common unit of mass used in astronomy is the solar mass (M), which is around 2 1030 kg. It is frequently used to denote the masses of black holes, galaxies, stellar clusters, nebulae, and other objects. Its mass is comparable to that of the Sun.
A solar mass is the fundamental unit of mass used by astronomers. It makes more sense to talk about such cosmic objects in terms of solar masses rather than a much smaller measure, such as kilos, because the majority of things in space are enormous and heavy, such as stars, galaxies, and black holes.
When a moderately big star, ranging in size from 8 to 40 solar masses, runs out of hydrogen shells around the core heat up sufficiently to start fusion.n fuel, it evolves off the main sequence and switches to fusing helium in its core, resulting in the formation of a red supergiant. This causes the star's radius to increase, which lowers the star's temperature.
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The development and use of alternative energy source is very necessary in present day world. Explain this statement.
Answer:
In today's world pollution is very high so alternative energy such as solar energy help us to make pollution free world. So it is necessary to use alternative energy.
What charge appears on the plates of a 6. 0-μf capacitor when it is charged to 40 v?
Charge appeared on the plates of a 6.0 μf capacitor when it is charged to 40V is 240μC.
Capacitance of the capacitor is determined by the area of the plate of Capacitor and distance between the plates of capacitor.
Capacitor is dependent on the area of the plates, distance between the plates and medium present between the plates.
It is not dependent of the charge and voltage across the capacitor.
We know that Q = CV, where Q is the charge on capacitor, C is the Capacitance and V is the voltage applied across the capacitor.
Q = 6 × 10⁻⁶ × 40
Q = 240× 10⁻⁶ C
Q = 240 μC
Hence the charge on the plates of the capacitor is 240 μC.
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An ordinary car battery has a charge of 13 volts. When starting the car, the battery delivers about 600 amperes to the car motor. What is the resistance of this circuit?
A
46.15 ohms
B
0.02166 ohms
C
600 ohms
D
7800 ohms
Answer:B
0.02166 ohms
Explanation:
Answer:
Explanation:
Formula
Voltage (volts) = current (amps) * resistance (0hms). The terms in brackets are the units.
Givens
V = 13 volts
I = 600 amps
R = ? ohms
Solution
V = I * R
13 = 600 * R Divide both sides by 600
13/600 = 600R/600 Do the division
0.0216 ohms = R This is almost a dead short.
Answer
R = 0.0216
If the distance between two objects is 15.00 m and the distance is tripled, then what is the new distance?
Answer:
so the answer is 45
Explanation:
you 15x3=45
5x3=15
this is a another way to do it add 15+15+15=45
15+15=30
then you add 15
then you get 45
The electric field inside a metallic conductor that is in electrostatic equilibrium is?
The electric field inside a metallic conductor that is in electrostatic equilibrium is zero.
An electric field is a physical field that surrounds electrically charged particles and acts as an attractor or repellent to all other charged particles in the vicinity. It can also refer to a system of charged particles' physical field.
Since there are many electrons, there is also a strong force of repulsion between them. Therefore, the electrons travel to the conductor's surface to reduce the repulsion between them. Therefore, we can state that there is no net charge present inside the conductor.
So, The electric field inside a metallic conductor that is in electrostatic equilibrium is zero.
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After traveling for 6.0 seconds, a runner reaches a speed of 12 m/s after starting
from rest. What is the runner's acceleration?
A. 2 m/s²
OB. 72 m/s²
C..5 m/s²
D. 6 m/s²
Answer:
A
Explanation:
accel = Δv / Δ t = 12/6 = 2 m/s^2
A 795-loop square armature coil with a side of 10. 5 cm rotates at 70. 0 rev/s in a uniform magnetic field of strength 0. 45 t. what is the rms voltage output of the generator?
The rms voltage output of the generator is 1.94 × 10⁻ ⁵ V.
RMS is an acronym for root mean squared. An RMS value is more than just the "amount of AC power that causes the same heating impact as an analogous DC power" or something along those lines.
No. of loop = 795
Diameter of the coil = 10.5 cm
Radius of the coil = 5.25 cm
Magnetic Field, B = 0.45 T
Time, t = 70.0 rev/s
[tex]V_{rms} =\frac{NwAB}{\sqrt{2} }[/tex]
Where,
N = No. of loop
A = Area of the coil
B = Magnetic Field
[tex]V_{rms}[/tex] = Voltage rms
Area of the coil = πr²
= 86.57 cm²
w = 2π/t
=( 2 × 3.141)/70.0
= 0.089
[tex]V_{rms} =\frac{795*0.089*86.57* 0.45}{\sqrt{2} }\\\\V_{rms} =\frac{2756.36}{\sqrt{2} }\\\\\\V_{rms} =\frac{2756.36}{1.414 }\\\\V_{rms} = 1.94 * 10^-^5 V[/tex]
Therefore, the rms voltage output of the generator is 1.94 × 10⁻ ⁵ V.
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The index of refraction of the core of a typical fiber optic is ncore = 1. 46; the cladding has nclad = 1. 4. calculate the critical angles for the total internal reflection icrit and crit
critical angle = [tex]i_{cr}[/tex] = 73.7°
total internal reflection = [tex]\alpha[/tex]cr = 54.58°
Given:
refractive index of core, [tex]n_{core}[/tex] = 1.46
refractive index of clad, [tex]n_{clad}[/tex] = 1.4
The incidence angle that causes the refraction angle to be equal to that at that angle of incidence is known as the critical angle.
The incidence angle needs to be greater than the critical angle for Total Internal Reflection to happen.
Now, we know that the critical angle = θcr is given by:
sinθcr = [tex]\frac{n_{clad} }{n_{core} }[/tex]
θcr = [tex]sin^{-1}[/tex] ([tex]\frac{n_{clad} }{n_{core} }[/tex])
θcr = [tex]sin^{-1}[/tex] ([tex]\frac{1.4}{1.46}[/tex])
= [tex]sin^{-1}[/tex](0.96)
=73.7° = [tex]i_{cr}[/tex]
Now for [tex]\alpha[/tex]cr:
[tex]sini_{cr}[/tex]/[tex]sin\alpha _{cr}[/tex] = 1/[tex]n_{core}[/tex]
[tex]sin\alpha _{cr}[/tex] = sin(90° - 73.7°) × 1.46
[tex]sin\alpha _{cr}[/tex] = sin(16.3°) × 1.46
=-0.558 × 1.46
=-0.815
[tex]\alpha _{cr}[/tex] = [tex]sin^{-1}[/tex](0.815)
= 54.58°
What is total internal reflection?full refraction of a light ray from the surrounding surfaces back into a medium like glass or water. If the incidence angle exceeds a specific limitation angle known as the critical angle, the phenomenon will manifest.Why is total internal reflection termed that?Total internal reflection means that none of the light that might conceivably travel away from this surface is refracted and that all of it is reflected.
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A 0. 22 kg clay target is fired at an angle of 35° to the horizontal. it reaches a maximum height of 4. 6 m. what is its initial speed when it is launched?
A 0. 22 kg clay target is fired at an angle of 35° to the horizontal. It reaches a maximum height of 4. 6 m. Its initial speed when it is launched will be u = 16.66 m/s
Projectile motion is the motion of an object thrown (projected) into the air. After the initial force that launches the object, it only experiences the force of gravity. The object is called a projectile, and its path is called its trajectory.
The object's maximum height is the highest vertical position along its trajectory. The horizontal displacement of the projectile is called the range of the projectile. The range of the projectile depends on the object's initial velocity.
h (max) = [tex]u^{2}[/tex] [tex]sin^{2}[/tex](theta) / 2g
given
theta = 35°
Maximum height = 4. 6 m.
u = ?
4.6 = [tex]u^{2}[/tex] * [tex]sin^{2}[/tex](35) / 2* 9.8
u = 16.66 m/s
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PLEASE ANSWER THIS ASAP!!!
Oliver was listening to music streaming from a cell phone. The sound was clear with no interference until he entered a garage and went down to the 4th level for parking. Then, the music stopped playing entirely.
Is the music signal most likely an analog or digital signal, and how do you know?
(Choice A)
Analog because the music was always clear until it stopped playing.
(Choice B)
Digital because the music was always clear until it stopped playing.
(Choice C)
Analog because the signal reaches into the parking garage.
(Choice D)
Digital because the signal reaches into the parking garage.
Answer:
I guess B
Explanation:
Because it stop by it self so that is digital
Doug is doing work. without knowing exactly what he is doing, which can be said about the work he is doing?
Energy is transferred.
What is Work?Every time labour is performed, energy is transmitted, as shown by the definition of work in physics. Work is the result of the displacement's magnitude and the component of force acting in that direction.
What are 3 types of work done?
Positive Negative Zero work done.Work is the result of force and distance, or the force exerted over a specific distance. In other words, Work = Force x Distance.
Joules are used to measure work.
1. Positive Work: Positive work is when a force moves an object in that direction. The motion of a ball descending toward the earth while it is displaced in the direction of the force of gravity is an illustration of this type of labour.
2. Negative Work: The work is said to be negative if the force and the displacement are in the opposing directions. For instance, if a ball is thrown high, its displacement will also be upwards, while the force from the earth's gravity will be downward.
3. Zero Work: When the force and displacement directions are parallel to one another, there is no work done on the item by the force.
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Answer:Energy is transferred.
Explanation: Took the test and Passed
Due to its motion in the magnetic field of the bar magnet, the charge will experience a force in which direction?
Due to its motion in the magnetic field of the bar magnet, the charge will experience a force perpendicular to both the velocity of the charge and the magnetic field
Magnetic Field is the region around a magnetic material or a moving electric charge within which the force of magnetism acts. A pictorial representation of the magnetic field which describes how a magnetic force is distributed within and around a magnetic material.
If you point your pointer finger in the direction the positive charge is moving, and then your middle finger in the direction of the magnetic field, your thumb points in the direction of the magnetic force pushing on the moving charge is called right hand rule .
The magnitude of the force is proportional to q, v, B, and the sine of the angle between v and B.
Hence , the magnetic force on a free moving charge is perpendicular to both the velocity of the charge and the magnetic field with direction given by the right hand rule.
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If a total force exerted by water in a container with a bottom area of 3 square meters is 900 newtons, what's the water pressure at the bottom of the container?
_______________
S=3 m²
F=900 N
_______________
p - ?
_______________
p=F/S=900 N / 3 m² = 300 Pa
Light of a given wavelength is used to illuminate the surface of a metal, however, no photoelectrons are emitted. In order to cause electrons to be ejected from the surface of this metal you should?
In order to cause electrons to be ejected from the surface of this metal you should use light of a shorter wavelength.
The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons. The phenomenon is studied in condensed matter physics, and solid state and quantum chemistry to draw inferences about the properties of atoms, molecules and solids. The effect has found use in electronic devices specialized for light detection and precisely timed electron emission.
This process is also often referred to as photoemission. In terms of their behaviour and their properties, photoelectrons are no different from other electrons. The prefix, photo-, simply tells us that the electrons have been ejected from a metal surface by incident light.
The photons of a light beam have a characteristic energy, called photon energy, which is proportional to the frequency of the light. In the photoemission process, when an electron within some material absorbs the energy of a photon and acquires more energy than its binding energy, it is likely to be ejected. If the photon energy is too low, the electron is unable to escape the material. Since an increase in the intensity of low-frequency light will only increase the number of low-energy photons, this change in intensity will not create any single photon with enough energy to dislodge an electron. Moreover, the energy of the emitted electrons will not depend on the intensity of the incoming light of a given frequency, but only on the energy of the individual photons.
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what is the value of boltzmann constant and where is it used?
Answer:
the value of the boltzman constant 8.61 73303 into 10 ratio by - 5 EV upon knev
A 26 kg bin is stationary on the driveway. The coefficient of static friction is 0.25. You pull on the bin with a force of 52 N [E] and your friend pulls with a force of 110 N [W]. Will the bin move? Explain your reasoning.
The bin will not move because the frictional force is greater than the net force acting on the bin.
What is the net force acting on the bin?The net force acting on the bin is obtained by subtracting the force acting on the Easterly direction from that acting in the Westerly direction.
Net force = 110 N - 52 N
Net force = 58 N
The frictional force acting on the bin is determined as well using the given formula:
Frictional force = coefficient of static friction * normal reaction
Norma reaction = 26 * 9.81
Normal reaction = 255.06 N
coefficient of static friction = 0.25
Frictional force = 0.25 * 255.06
Frictional force = 63.8 N
Since the frictional force is greater than the net force acting on the bin, the bin will not move.
In conclusion, the frictional force is the force that opposes relative between two objects at their surface of contact.
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examples of different types of energy that are PE
[tex]\quad \quad\quad \huge \underline{\tt{ANSWER᭄}}[/tex]
[tex] \quad\quad\quad\quad[/tex]
[tex] \blue{ \star}[/tex]Magnetic Energy :
Compass Hard disk drives[tex] \blue{ \star}[/tex]Gravitational Energy :
Writing with pen on paperRipe fruit before it falls[tex] \blue{ \star}[/tex]Nuclear Energy :
ElectricityNuclear Weapons[tex] \blue{ \star}[/tex]Thermal energy :
Baking in an ovenA cup of hot chocolateAssuming the diode is ideal but with a forward voltage drop of. 65 volts, what is the voltage vr1, if v1=6v, and r1=921ω?
The ideal diode's current is 0.064 mA at a forward biased voltage drop of 65 V.
An ideal diode is a particular kind of electronic component that has two terminals, and only permits current to flow in one direction, with less zero resistance in one direction and infinite resistance in another.
The most often used type of diode is a semiconductor diode.
It is a crystalline semiconductor part with a PN junction that is connected to two electrical terminals.
We have provided values here.
[tex]V_{2}[/tex]=65 volts
[tex]v_{1} =6v[/tex]
[tex]r_{1} =921w[/tex]
[tex]I=V_{2 - V_{1} /I[/tex]= 65-6/921=0.064
The ideal diode's current is 0.064 mA at a forward biased voltage drop of 65 V.
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A car accelerates from west to east. In which direction is the force it applies on the road? What is the direction of the force applied by the road on the car?
Answer:
The car applies a force in the opposite direction it is moving to. That is; from east to west.
Explanation:
This obeys Newtons third law of motion.
The bronsted-lowry model focuses on the transfer of _______ in an acid-base reaction.
a) electrons h
b) oh- neutrons
c) orbitals
The Bronsted-Lowry model focuses on the transfer of H⁺ in an acid-base reaction.
What is the Bronsted-Lowry theory?According to the Bronsted-Lowry theory, often known as the proton theory of acids and bases, any substance that can transfer a proton to another substance is an acid, and the substance that accepts the proton is a base. Because it makes up the nucleus of a hydrogen atom, a proton is a nuclear particle with a unit positive electrical charge; it is denoted by the symbol H⁺.
The Bronsted-Lowry scheme states that an object can only act as an acid in the presence of a base and that an object can only act as a base in the presence of an acid. In addition, when a basic substance obtains a proton, it generates an acid known as the conjugate acid of a base, and when an acidic substance loses a proton, it forms a base known as the conjugate base of an acid.
I understand the question you are looking for is this:
The Bronsted-Lowry model focuses on the transfer of _______ in an acid-base reaction.
a. neutrons
b. OH-
c. H+
d. orbitals
e. electrons
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Considering how the predictions compare to the observations, what does this imply about the mass distributed in the galaxy?
Answer:
The observations show a higher velocity than is predicted, mainly in the galaxy's outer regions, indicating that there is more mass in the exterior areas than we can see.
The observations show higher velocities than is predicted, mostly in the outer regions of the galaxy, indicating that there is more mass in the outer regions than we can see.
GalaxyA galaxy is a collection of gravitationally bound stars, stellar remains, interstellar gas, dust, and dark matter. The name comes from the Greek word galaxias, which means "milky" in reference to the Milky Way galaxy, which houses the Solar System. Galaxies range in size from dwarfs, which have fewer than 100 million stars, to supergiants, which have 100 trillion stars around their galaxy's center of mass. Galaxies, on average, contain an estimated 100 million stars.
A galaxy can be classified as elliptical, spiral, or irregular based on how it appears to the human eye. Supermassive black holes are considered to be present in the centers of several. Sagittarius A*, the name given to the center black hole of the Milky Way, has a mass that is four million times that of the Sun.
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