Which list correctly names the three types of galaxies? binary, open, globular elliptical, open, binary irregular, spiral, elliptical open, irregular, spiral
Answers
The names the three types of galaxies are: spiral, elliptical, irregular.
What are galaxies?A galaxy is a vast collection of stars, solar systems, gas, and dust. Gravity holds a galaxy together. A supermassive black hole also resides in the center of our galaxy, the Milky Way.
You see other stars in the Milky Way as you look up at the stars in the night sky. If it's truly dark and you're distant from any cities or residences with lights, you can even make out the Milky Way's dusty bands tracing a path across the sky.
A few galaxies resemble our own in spiral shape. They have curved arms that give it a pinwheel-like appearance. Others have smooth surfaces and oval shapes. We refer to them as elliptical galaxies. There are galaxies that are neither spirals nor ovals, though. They resemble blobs and have irregular forms. Each of these galaxies emits light that we can see from its stars.
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Galaxies are classified based on their shape. The three types of galaxies are spiral, elliptical, and irregular galaxies.
What is a galaxy?Galaxies are the biggest group of stars and contain a few million stars to many billions of stars. It is also considered the vast cosmic island made up of stars, dust, and dark matter held together by gravity.
Every star in the night sky is the part of Milky Way galaxy and the solar system is present in this galaxy. The closest galaxy to the Milky Way is the Andromeda galaxy.
Galaxies are classified based on their shape and hence they are elliptical, spiral, and irregular galaxies. Spiral galaxies are galaxies that are spiral in shape and appear as a rotating disk of stars and dust. This galaxy contains lots of dust, gas, and young stars.
Elliptical galaxies are the galaxies that are elliptical in shape. The smallest elliptical galaxies are small as globular clusters and the large elliptical galaxies contain trillions of stars. This galaxy contains old stars and hence the galaxy is yellowish in colour.
The galaxies that have not come under the elliptical and spiral galaxies are called irregular galaxies. The spiral galaxies and elliptical galaxies get deformed by gravity and form irregular galaxies.
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Related Questions
a supersonic aircraft travels faster than the speed of sound. What might be the top speed of such an aircraft? 200 Kilometers per hour 500 Kilometers per hour O 1000 Kilometers per hour O 1500 Kilometers per hour
Answers
1500 kpm
the magnetic field of a wave propagating through a certain nonmagnetic material is given by _____
Answers
The magnetic field of a wave propagating through a certain nonmagnetic material can be described by the Maxwell's equations, which govern the behavior of electromagnetic waves.
In particular, the magnetic field is related to the electric field and the rate of change of the electric field by the equation known as Faraday's law. This law states that a changing magnetic field induces an electric field, and vice versa.
However, since the material in question is nonmagnetic, there are no free magnetic charges that can interact with the electromagnetic wave. Therefore, the magnetic field is solely due to the changing electric field, which in turn is caused by the oscillation of charged particles in the material. The exact form of the magnetic field depends on the geometry of the wave and the properties of the material, such as its permittivity and conductivity.
In summary, the magnetic field of a wave propagating through a nonmagnetic material is determined by Faraday's law and the interaction of the electric field with charged particles in the material.
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why is it important for a chemist to know the relative masses of atoms?
Answers
It is important for a chemist to know the relative masses of atoms because these masses are essential for various calculations in chemistry, such as determining the amount of substances involved in a reaction, calculating stoichiometry, and understanding the composition of compounds.
Stoichiometry: The relative masses of atoms are used to determine the stoichiometry of chemical reactions, which involves the quantitative relationship between reactants and products. By knowing the masses of atoms, chemists can calculate the ratios in which elements combine and the amounts of substances needed or produced in a reaction.
Molar Mass: The relative masses of atoms contribute to the calculation of molar masses. Molar mass is the mass of one mole of a substance and is used to convert between mass and moles in chemical equations, aiding in measurements and conversions in the laboratory.
Composition of Compounds: The relative masses of atoms are crucial in determining the empirical and molecular formulas of compounds. These formulas provide information about the types and ratios of atoms present in a substance, allowing chemists to identify and characterize compounds accurately.
Atomic Mass: The relative masses of atoms also play a significant role in determining the atomic mass of elements. The atomic mass, expressed in atomic mass units (amu), represents the average mass of all the isotopes of an element. This information is essential for identifying elements and understanding their properties.
Knowledge of the relative masses of atoms is fundamental for chemists as it enables them to perform calculations related to stoichiometry, molar mass, compound composition, and atomic mass. This understanding forms the basis for quantitative analysis, the determination of reaction yields, the synthesis of compounds, and various other aspects of chemical research and applications.
By utilizing the relative masses of atoms, chemists can make accurate predictions, analyze experimental results, and gain insights into the behavior of substances at the atomic and molecular levels.
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A charge of - 4.0 µC is located at the origin and a charge of - 5.0 µC is located along the y-axis at y = 2.0 m. At what point along the y-axis is the electric field zero?
Answers
I got y = 0.94427191 and y = -16.944272. Not sure if right tho.
I did \({k q_1 \over y^2} &= {k q_2 \over (2-y)^2}\), put the known in and solved it.
A student used a vernier calliper to measure the length of a pencil. He found that the main scale showed a reading of 8.3 and vernier scale coincides with 5th position to the main scale. What is the correct measurement of the length of the pencil?
Answers
The correct measurement of the length of the pencil is 8.35 units (8.3 units from the main scale + 0.05 units from the vernier scale).
To determine the correct measurement of the length of the pencil using the vernier caliper, we need to combine the reading from the main scale and the vernier scale. The main scale reading is 8.3 units. This indicates that the main scale measurement is 8.3 units long.The vernier scale coincides with the 5th position on the main scale. The vernier scale has divisions that are slightly smaller than the divisions on the main scale. Each division on the vernier scale is a fraction of the main scale division.
Since the vernier scale coincides with the 5th position on the main scale, we can determine the fractional part of the measurement using the vernier scale. In this case, the vernier scale division corresponds to the 0.1 unit.To determine the fraction, we count the number of divisions on the vernier scale that align with divisions on the main scale. In this case, the 5th position of the vernier scale aligns with a division on the main scale, indicating a fractional part of 0.01 units.
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.) Which of the following statements is true?
a) A scalar quantity can be added to a vector
b) It is possible for the magnitude of a vector to equal zero even though one of its components
is non-zero
c) Scalar quantities are path dependent, while vectors are not.
d) Scalar quantities and vector quantities can both be added algebraically
Answers
What questions do you still have about supermassive black holes after watching this Ted Talk? Do you feel that you have a deeper understanding of what they are and why they are important, like was asked of you in the third question? Explain and discuss.
Answers
After watching the Ted Talk, there were still a few questions that I had about supermassive black holes. Firstly, I wanted to know more about the event horizon and what it exactly entails. Although the speaker briefly touched upon this subject, I would have appreciated a more in-depth explanation. Additionally, I would have liked to know more about the role of supermassive black holes in the universe.
While the speaker did mention that these black holes are responsible for the creation of galaxies, I wanted to know more about how this process works and why it is so important.Despite these questions, I do feel that I have a deeper understanding of supermassive black holes and their importance.From the Ted Talk, I learned that supermassive black holes are some of the largest objects in the universe and are essential for the formation of galaxies. I also learned that these black holes are incredibly powerful and have the ability to affect the trajectory of stars and planets.Overall, I think that the Ted Talk did a great job of explaining supermassive black holes in a way that was easy to understand. While there were still a few questions that I had after watching the video, I feel that I now have a better grasp of what supermassive black holes are and why they are so important.For such more question on supermassive
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A 500 g block of metal absorbs 5016 J of heat when its temperature changes from 20.0°C to 30.0°C. Calculate the specific heat of the metal.
Answers
Explanation:
the answer is
s= 1.0032 J/ g .C
The specific heat of the metal is 1.0032 J/ g .C.
What is specific heat?The quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree.
The formula is Cv = Q / (ΔT ⨉ m) Here, Q = absorbed heat = 5016 JMass m = 500gΔT = t1 - t2 = 30 - 20 = 10°CPutting above values in the equation we get,
Cv = 5016/(500 x 10)
Cv = 5016/5000
Cv = 1.0032J/g .C
Thus , the specific heat of the metal is 1.0032 J/ g .C.
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Calculate frequency if wavelength is 35 m and wave speed is 546 m/s.
25.6 Hz
15.6 Hz
390 Hz
.06 Hz
Answers
A construction worker is carrying a load of 40 kg over his head and is walking at a constant velocity if he travels a distance of 50 meters how much work is being done
Answers
The \(1.9 * 10^4\) joules of work is being done by the construction worker. The correct answer is option D.
Work is defined as the transfer of energy that occurs when a force is applied over a distance in the direction of the force. If a force is applied but there is no movement in the direction of the force, no work is done. The formula for work is W = F × d × cos θ where W is work, F is force, d is distance, and θ is the angle between the force and the direction of motion. In this case, the construction worker is carrying a load of 40 kg over his head, which means that he is exerting a force equal to the weight of the load, which is \(40 kg * 9.8 m/s^2 = 392 N.\) Since he is walking at a constant velocity, the angle between the force and the direction of motion is 0, which means that cos θ = 1. Therefore, the work done by the worker is \(W = F * d = 392 N * 50 m = 1.9 * 10^4\) joules. Therefore, the correct answer is option D.In conclusion, the work being done by the construction worker carrying a load of 40 kg over his head while walking at a constant velocity over a distance of 50 m is \(1.9 * 10^4\) joules.For more questions on joules
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The correct question would be as
A construction worker is carrying a load of 40 kilograms over his head and is walking at a constant velocity. If he travels a distance of 50 meters, how much work is being done?
A. 0 joules
B. 2.0 × 102 joules
C. 2.0 × 103 joules
D. 1.9 × 104 joules ...?
can you please help me?
Answers
Answer:
Iron, You're Welcome :)
Answer:
iron
Explanation:
MODEL TEST PAPER-I ..
Class : VII
F.M.: 75
Subject: Science & Environment
P.M.: 30
Term: Final Examination
Time: 24 hrs
Candidates are required to give answer in their own words as far as
practicable.
Attempt all the questions.
Group- A (Physics)
a. What is a unit? Define SI system. What is the advantage of usin
SI system?
Answers
Here’s the answer buddy!
What is a unit?
A unit is an individual thing or person regarded as single and complete but which can also form an individual component of a larger or more complex whole.
Define SI system?
The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.
What is the advantage of using SI system?
The greatest advantage of SI is that it has only one unit for each quantity (type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize. For example, the one and only SI unit of length is the metre (m).
In the following chemical reaction, what product is represented by X?
2NaBr + BaCl2 → 2NaCl + X
A. 2BaBr
B. 2BaBr2
C. BaBr
D. BaBr2
Answers
Answer:
The answer is A
Explanation:
what is the magnitude of the force exerted by the biceps fbiceps ? what is the magnitude of the force exerted by the elbow felbow ? express your answers in newtons separated by a comma.
Answers
The force exerted by the biceps and the elbow is 239.9 N and 215.89 N respectively.
When we use only your forearms to lift an object, assume that your biceps are the main muscle that lifts your arm. Suppose the weight of the forearm he is 1.50 kg. If the biceps is attached to the forearm 2.50cm from the elbow, with the forearm parallel to the floor, flex the biceps to hold a 950g ball on the end of the elbow at a distance of 36.0cm from the elbow.
Against this background,
forearm mass = 1.50 kg
forearm length = 2.50 cm
The weight of the ball is 950 g.
36.0 cm ball spacing
Forearm strength needs to be calculated. Balance Elbow Using
Torque,
Fb x Db = Wf x Df/2 + Wball x Dball
Putting Value,
Fb x .025 = 1.5 x 9.8 x .36/2 + 0
95 x 9.8 x 0.36
Fb = 239.9 N
Now elbow force,
Fb = Fl + Wf + Wb
Fl = Fb - Wf - Wb
Putting value,
Fl = 239 .9 - (1.5 x 9.8 ) - (0.95×9.8)
Fl = 215.89 N.
Therefore the force on the elbow is 215.89 N.
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How do you determined the atomic mass and mass number of an atom?
Answers
Answer:
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
Explanation:
what is the primary component of venus' atmosphere?
Answers
The primary component of Venus' atmosphere is carbon dioxide (CO2).
Carbon dioxide constitutes the majority of the planet's atmosphere, accounting for approximately 96% of its composition.
The thick atmosphere of Venus creates a strong greenhouse effect, trapping heat and leading to extreme surface temperatures that can exceed 450 degrees Celsius (870 degrees Fahrenheit).
The high concentration of carbon dioxide contributes to the intense greenhouse effect on Venus, making it the hottest planet in our solar system despite being farther from the Sun than Mercury.
In addition to carbon dioxide, Venus' atmosphere contains trace amounts of other gases such as nitrogen, sulfur dioxide, and water vapor.
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Scenario: You place a cold metal sphere in a container of hot water.
(a) Type(s) of energy transfer:
(b) Where will each form of transfer occur?
(c) What will happen and why?
4. Scenario: You place a piece of hot rock into a metal container, and then remove all the
air from the container.
(a) Type(s) of energy transfer:
(b) Where will each form of transfer occur?
(c) What will happen and why?
Answers
In the first scenario, heat transfers from hot water to a cold metal sphere until they reach thermal equilibrium. In the second scenario, heat and radiation occur from a hot rock to a metal container with no air until they reach thermal equilibrium.
For the scenario where a cold metal sphere is placed in hot water:
(a) The type of energy transfer is heat transfer.
(b) The transfer will occur from the hot water to the cold metal sphere, resulting in a decrease in the temperature of the water and an increase in the temperature of the sphere.
(c) The heat energy from the water will flow to the sphere until the two objects reach a state of thermal equilibrium, meaning they are at the same temperature. This occurs because heat naturally flows from hotter objects to cooler ones.
For the scenario where a hot rock is placed in a metal container with all the air removed:
(a) The type of energy transfer is both heat transfer and radiation.
(b) Heat transfer will occur from the hot rock to the metal container, while radiation will occur from the rock to the surrounding environment.
(c) The hot rock will lose heat energy to the metal container until they reach thermal equilibrium. Additionally, as the rock cools, it will emit electromagnetic radiation in the form of infrared waves. Because there is no air in the container, convection, another form of heat transfer, cannot occur.
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The ratio between the force of friction and the normal force is called:
A.the drag
B.rolling friction
C.the coefficient of friction
D.the starting friction
Answers
Answer:
C.the coefficient of friction
Explanation:
Hope this helps. can i have brainliest thanks!
A boy is looking into a plane mirror .His nose is 30 cm in front of the mirror .How far is his nose from where its image appears to be ?
Answers
Answer:
60cm
Explanation:
30+30=60
What is the net force on a bathroom scale when a 110 pound person stands on it? How do you know?
Answers
the father sake to his daughter am happy with you change into reported speech
Answers
Answer:
I am happy with you the father said to his daughter
Determine the stopping location of the prize wheel. At this moment it is centered on the number 5. It is spinning with an energy of 6.19 J. It is slowing at a rate of 1.800 rad/s/s.
The disk is made from a wood with a density of 478.0 kg/m^3. The disk is 29.0 mm thick and has a radius of 33.0 cm.
Predict the angular displacement it will go through and predict the number on which the wheel will stop. To be safe, you will also get one number the right and to the left of the number you chose.
The wheel will spin clockwise. The wheel goes from 1 to 36.
Answers
Answer:
Thanks for the 50 points. Answer eill be always 29.0m
The insulating material placed between the conducting plates of a capacitor is a(n) ?
Answers
Answer:
the answer is dielectric
hope helps you
Explanation:
Answer:
dielectric
Explanation:
edge
A box has pushed across the floor for 5.2 M with a 48 N force how much work is done?
Answers
So force is 48 and displacement is 5.2 as given
Therefore 48 x 5.2
Which is 249.6
Approximately 250 J (joules)
A. What do you think is the importance of studying Anthropology in your life as a teenager? Cite five situations happenings in your life that proved its significance and give a one sentence explanation
Your Life Situation
Significance (One-Sentence Explanation)
B. Select only five among the eight areas of concern and give a phrase or a one-sentence statement on how Anthropology is significant/beneficial to the identified areas of concern.
Areas of Concern
How Anthropology Is Significant Beneficial to this Area (phrase/sentence)
Answers
The importance of a studying anthropology to teenagers is that help them to know their roles in the society as well as teach them acceptable social behaviour.
What is anthropology?Anthropology is the scientific study of human behaviour, culture and language, both in past and present human societies.
A study of anthropology helps to educate teenagers and help them see their roles in the society as well as them acceptable social behaviour.
Area of importance of anthropology include:
Socio-cultural anthropology - educates about societies and their culturePhysical anthropology - provides a biological knowledge of people in a societyArchaeological anthropology - tells us about societies in the pastLinguistic anthropology - educates about languages of societiesPsychological Anthropology educates individuals about the behavioural patterns of societies.Learn more about anthropology at: https://brainly.com/question/13728734
A constant volume gas thermometer is used to measure the normal temperature during an experiment.If the gas pressure at 270kelvin is 220mmHg and 270mmHg at 373kelvin.What is the room temperature if the gas thermometer records a pressure of 234mmHg
Answers
The room temperature if the gas thermometer records a pressure of 234mmHg is 248.84 K.
What will be the temperature at 234 mmHg?
The temperature of reading of the thermometer is calculated by applying interpolation method.
220 mmHg --------> 270 K
234 mmHg ----------> x
270 mmHg ------------ > 373 K
Now solve for x,
( 234 - 220 ) / ( 270 - 220 ) = ( x - 270 ) / ( 373 - 270 )
0.28 = ( x - 220 ) / 103
103 ( 0.28 ) = x - 220
x = 248.84 K
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a picture frame is hanging by two vertical strings the tensions in the strings are 5.7N ane 3.5N Find the weight of picture frame
Answers
The weight of picture frame that is hanging by two vertical strings the tensions in the strings are 5.7N and 3.5N is 9.2 N
Since the picture frame is hanging and not moving,
a = 0
The string apply a force upwards and weight is a force that acts downwards.
T1 = 5.7 N
T2 = 3.5 N
∑ Fy = m a
T1 + T2 - W = 0
5.7 + 3.5 - W = 0
W = 9.2 N
Therefore, the weight of picture frame is 9.2 N
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A ray of sunlight hits the mirror at an angle of theta subscript i space equals 37 to the power of owith the normal to the surface of the mirror. at what angle would the mirror reflect the sunlight?
Answers
The mirror would reflect the sunlight at an angle with the normal to the surface of the mirror. So, the correct option is (c).
When a rectilinear light beam contacts a surface, it is referred to as an incident ray at that location (surface). The angle of incidence is the angle formed by this beam and the normal or perpendicular to the surface. The incident beam was reflected. After striking the reflecting surface, the beam is said to have been "reflected" in the same medium.
From the laws of reflection, we know that
∠i=∠r
where i is the angle of incidence
r is the angle of reflection
Given,
∠i=37°
⇒∠r=∠i=37°
Therefore, mirror would reflect the sunlight at an angle with the normal to the surface of the mirror.
The complete question is : A ray of sunlight hits the mirror at an angle of 37 with the normal to the surface of the mirror. At what angle would the mirror reflect the sunlight?
A.Along the surface of the mirror.
B.Perpendicular to the mirror.
C.At an angle of with the normal to the surface of the mirror.
D.At an angle of with the surface of the mirror.
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A car can go from 0 m/s to 38 m/s in 4.5 seconds. If a net force of 6570 N acted on
the car, what is its mass
Answers
The Mass of the car = 782.1 Kg
What is the mass of the car?The mass of the car is calculated as follows:
Mass = Force/ accelerationThe force on the car = 6570 N
The acceleration of the car, a = 38 - 0/4.5
acceleration = 8.44 m/s²
Mass of the car = 6570/8.44
Mass of the car = 782.1 Kg
In conclusion, the mass of the car is obtained from the acceleration and force on the car.
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The angular velocity of a flywheel obeys the equa tion w(1) A Br2, where t is in seconds and A and B are con stants having numerical values 2.75 (for A) and 1.50 (for B). (a) What are the units of A and B if w, is in rad/s
Answers
Answer:
\(A \to rad/s\)
\(B \to rad/s^3\)
Explanation:
\(\omega_z(t)=A + Bt^2\)
Required
The units of A and B
From the question, we understand that:
\(\omega_z(t) \to rad/s\)
This implies that each of \(A\) and \(Bt^2\) will have the same unit as \(\omega_z(t)\)
So, we have:
\(A \to rad/s\)
\(Bt^2 \to rad/s\)
The unit of t is (s); So, the expression becomes
\(B * s^2 \to rad/s\)
Divide both sides by \(s^2\)
\(B \to \frac{rad/s}{s^2}\)
\(B \to rad/s^3\)