The work function of a specific metal is 2.91 eV Find the longest wavelength, in nanometers, photon that can eject an electron from potassium. Numeric A numeric value is expected and not an expression Aux
Answers
The longest wavelength photon that can eject an electron from potassium is 426 nm.
The work function of potassium is given as 2.91 eV. To find the longest wavelength photon that can eject an electron, we can use the equation:
E = h * c / λ
Where E is the energy in joules, h is the Planck's constant (6.626 x 10⁻³⁴ Js), c is the speed of light (3 x 10⁸ m/s), and λ is the wavelength in meters. First, we need to convert the energy from electron volts (eV) to joules (J):
1 eV = 1.602 x 10⁻¹⁹ J
E = 2.91 eV * (1.602 x 10⁻¹⁹ J/eV) = 4.66 x 10⁻¹⁹ J
Now, we can solve for the wavelength (λ):
λ = h * c / E
λ = (6.626 x 10⁻³⁴ Js) * (3 x 10⁸ m/s) / (4.66 x 10⁻¹⁹ J)
λ = 4.26 x 10⁻⁷ m
To convert this value to nanometers (nm), we simply multiply by 10⁹:
λ = 4.26 x 10⁻⁷ m * 10⁹ nm/m = 426 nm
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Related Questions
A car accelerates uniformly from rest and reaches a speed of 21.4 m/s in 5.1 s. The diameter of a tire is 38.2 cm. Find the number of revolutions the tire makes during this motion, assuming no slipping
Answers
To find the number of revolutions the tire makes during this motion, we need to calculate the distance traveled by the tire and divide it by the diameter of the tire.
First, we need to find the distance traveled. This can be calculated using the formula:
distance = (initial velocity + final velocity)/2 * time = (0 + 21.4 m/s)/2 * 5.1s = 110.7m
Next, we need to convert the diameter of the tire from cm to m.
diameter = 38.2 cm / 100 cm/m = 0.382 m
Now we can calculate the number of revolutions by dividing the distance traveled by the diameter of the tire:
revolutions = distance / diameter = 110.7m / 0.382 m = 290.64
Therefore, the tire makes 290.64 revolutions during this motion
Note that it is assuming that the tire is not slipping. When the tire is slipping, this result can be different.
a ball is thrown upward at a velocity of 19.6 m/s. how long time does it take to come back to its original height?
Answers
Time taken by the ball to reach its original height is 4 seconds.
How is time, height and gravity related in motion?The vertical motion is a motion that occurs when we toss an object completely up. Because the initial velocity or force is only applied in the vertical axis, this motion only moves vertically; if there is any horizontal movement, the air is to blame.Because a uniformly accelerated motion typically goes in the "x" axis, the vertical motion could be viewed as a version that moves in the "y" axis. The acceleration of the vertical motion will be equal to the gravity, therefore it can be thought of as a uniformly accelerated motion.
Given that gravity is an acceleration that points downward, it will always have a negative sign. One of the key prerequisites for vertical motion is that the object's initial velocity must be greater than zero; otherwise, the object will begin to rise and slow down until its initial velocity equals zero, at which point it will begin to fall and its velocity will steadily increase in the opposite direction until it collides with the ground.
The time take by the ball to reach back to its original height will be equal to twice of time taken to reach its maximum height.
According to the kinematic equations of motoion we know that
v = u + at
Here v = final velocity, u = initial velocity , a = acceleration, t = time taken to reach maximum height
We know that;
v = 0 m/s
u = 19.6 m/s
g = -9.8 m/s^2
Thus
t = v - u/a
= 0 - 19.6/ (-9.8)
= 2s
Thus time taken by the ball to reach its original height is 2 x t = 4s.
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a herd of deer would be]
Community
Ecosystem
Individual
Population
Answers
A herd of deer would be a population (in this case, the individual is the deer).
What is a population?A population is a group of individuals of the same species living in a particular geographic region.
Moreover, a community is a group of populations living together in a particular ecosystem.
In conclusion, a herd of deer would be a population (in this case, the individual is the deer).
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A rock climber is about to haul up 100 N (about 22.5 pounds)
A rock climber is about to haul up 100 N (about 22.5 pounds) of equipment that has been hanging beneath her on 40 meters of rope that weighs 0.8 newtons per meter. How much work will it take?
Answers
8000 Joules is the amount of work required to haul up the equipment.
Work to haul equipment?To calculate the work required to haul up the equipment, we need to consider two components: the work done against gravity and the work done against the weight of the rope.
Work against gravity:The force due to gravity is given by the weight of the equipment, which is 100 N. The distance over which the force is applied is the height the equipment is being hauled, which is 40 meters. The work done against gravity can be calculated using the formula:
Work = Force × Distance
Work against gravity = 100 N × 40 m = 4000 N·m or 4000 J (Joules)
Work against the weight of the rope:The weight of the rope can be calculated by multiplying the weight per meter (0.8 N/m) by the length of the rope (40 m):
Weight of the rope = 0.8 N/m × 40 m = 32 N
Since the rope is being hauled up, the work done against the weight of the rope is the same as the work done against gravity. Therefore, the work against the weight of the rope is also 4000 J.
The total work required to haul up the equipment is the sum of the work against gravity and the work against the weight of the rope:
Total work = Work against gravity + Work against rope weight
Total work = 4000 J + 4000 J
Total work = 8000 J
Therefore, it will take 8000 Joules of work to haul up the equipme
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one scientific theory is that at the time of the creation of the universe, that for every matter particle created, an equal amount of antimatter was created. t or f
Answers
The scientific theory which says that at the time of creation of universe an equal amount of matter and antimatter was created is still under research. So, it is not possible to say whether the statement is true or false.
In the early universe, there should have been equal amounts of matter and antimatter created by the Big Bang. In any case, today, all that we see from the tiniest life forms on Earth to the biggest heavenly bodies is made up of matter. So, when comparison is drawn there is not that amount of antimatter. The balance must have been shifted by some event. Finding out what happened to the antimatter or why there is an asymmetry between matter and antimatter is one of the most difficult problems in physics.
Despite having opposite properties like electric charge, antimatter particles have the same mass as their matter counterparts. The opposite of the negatively charged electron, for instance, is the positively charged positron. Particles of matter and antimatter are always made in pairs, and if they come in contact with each other, they explode, leaving behind only energy. Particle-antiparticle came into existence just a fraction of seconds after the big bang. It appears that the universe would only contain energy leftover from the creation and destruction of matter and antimatter together.
However, a very small amount of matter, about one particle per billion, was able to survive. Particle physics experiments have demonstrated over the past few decades that the natural laws do not apply equally to matter and antimatter. Physicists are interested in figuring out the reason. Before they decay, researchers have observed millions of spontaneous transformations between particles and their antiparticles.
By studying the subtle differences in the behavior of matter and antimatter particles produced by high-energy proton collisions at the Large Hadron Collider, physicists may be able to determine the nature of this process. Scientists may gain a better understanding of the reasons for the abundance of matter in our universe by studying this imbalance.
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a step-down transformer is used for recharging the batteries of portable devices such as tape players. the turns ratio inside the transformer is 13:1 and is used with 120-v (rms) household service. if a particular tape player draws 0.35 a from the house outlet, what are (a) the voltage and (b) the current supplied from the transformer? (c) how much power is delivered?
Answers
We can use the transformer equation to solve this problem. The transformer equation states that the ratio of voltages is equal to the inverse of the turns ratio:
Vp / Vs = Ns / Np
where Vp is the primary voltage, Vs is the secondary voltage, Np is the number of turns in the primary coil, and Ns is the number of turns in the secondary coil.
(a) To find the voltage supplied from the transformer, we can use the transformer equation and solve for Vs:
Vs = Vp (Ns / Np)
The turns ratio is given as 13:1, which means that Ns / Np = 1 / 13. Therefore,
Vs = (120 V) (1 / 13)
Vs = 9.23 V
The voltage supplied from the transformer is 9.23 V (rms).
(b) To find the current supplied from the transformer, we can use the fact that power is conserved in a transformer. That is, the power delivered to the primary coil is equal to the power delivered to the secondary coil. Therefore,
Ip Vp = Is Vs
where Ip is the primary current, Is is the secondary current, and we have assumed ideal conditions with no losses. Rearranging this equation to solve for Is, we get:
Is = Ip (Vp / Vs)
The primary voltage is 120 V (rms). To find the primary current, we can use the fact that power is equal to voltage times current, or P = VI. The tape player draws 0.35 A from the house outlet, which means the power delivered to the primary coil is:
P = VI = (120 V) (0.35 A) = 42 W
Since the transformer is ideal and there are no losses, the power delivered to the secondary coil is also 42 W. Therefore, the current supplied from the transformer is:
Is = Ip (Vp / Vs) = (42 W) / (9.23 V)
Is = 4.55 A (rms)
The current supplied from the transformer is 4.55 A (rms).
(c) The power delivered to the tape player is equal to the power delivered to the secondary coil of the transformer, which is 42 W. Therefore, the power delivered to the tape player is 42 W.
Mr. Seifert needs to push a cardboard box down the hallway for Ms. Wang. The box has a mass of 40 kg and he is pushing it with an acceleration of 2 m/s/s. Because the cardboard does not slide easily, there is a friction force of 25 Newtons acting on the box to the LEFT. How much force is Mr. Seifert applying to the box to move it forward to the RIGHT?
Answers
Answer:
105N
Explanation:
force = mass x acceleration
force without the 25N = 40 x 2
= 80N
On top of this, he has to counteract the 25N so the actual force is 80N + 25N which is 105N
which of the following statements must be true of an extended body that is experiencing a net force of zero? question 2 options: no point on the extended body can be accelerating. all points on the extended body are accelerating. the center of mass of the extended body is not accelerating. the center of mass of the extended body is accelerating.
Answers
The statement that must be true of an extended body experiencing a net force of zero is that the center of mass of the extended body is not accelerating.
When an extended body experiences a net force of zero, it means that the vector sum of all the forces acting on the body is zero. According to Newton's second law of motion, F = ma, where F is the net force, m is the mass, and a is the acceleration. Since the net force is zero, the acceleration of the body is also zero. In an extended body, different parts of the body may experience different forces, causing them to accelerate or decelerate. However, the center of mass of the body represents the point where the body's total mass is concentrated. If the net force is zero, the center of mass remains at rest or moves with a constant velocity, indicating that it is not accelerating.
Therefore, the correct statement is that the center of mass of the extended body is not accelerating.
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Suppose you graphS i n open parentheses theta subscript 1 close parenthesesVs.S i n open parentheses theta subscript 2 close parenthesesand get a slope m = 0.413. If the second material is air (n2 = 1.0003), use equation 2 in the manual to calculate n1.
n1 = 1
n1 = 2.42
n1 = 1.46
n1 = 1.47
n1 = 1.49
n1 = 0.413
Answers
The equation mentioned in the manual is:
m = (n2/n1) * (cos(theta1)/cos(theta2))
n1 = 2.42
What is the value of n1 if the slope obtained from the graph of sin(theta1) vs. sin(theta2) for two materials (one of which is air with n2 = 1.0003) is m = 0.413, according to equation 2 in the manual?The equation mentioned in the manual is:
m = (n2/n1) * (cos(theta1)/cos(theta2))
where m is the slope obtained from the graph of sin(theta1) vs. sin(theta2), n1 and n2 are the refractive indices of the two materials, and theta1 and theta2 are the angles of incidence and refraction, respectively.
In this problem, we have n2 = 1.0003 (since the second material is air). We also know that sin(theta1) = sin(theta2), since the graph is of sin(theta1) vs. sin(theta2). Therefore, cos(theta1) = sqrt(1-sin^2(theta1)) = sqrt(1-sin^2(theta2)) = cos(theta2).
Substituting these values into the equation above, we get:
0.413 = (1.0003/n1) * 1
Simplifying this expression, we get:
n1 = 1.0003/0.413 = 2.42
Therefore, the correct answer is n1 = 2.42.
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studocu do you observe a pattern? can you predict the decay time for the next nucleus? watch what happens in the bottom-half of the display.
Answers
Any online is a platform that allows students to access lecture notes, textbook solutions, and other study materials uploaded by other students. It does not have anything to do with predicting the decay time for a nucleus or observing patterns in nuclear decay.
However, in terms of nuclear decay, there are some patterns that can be observed. For example, the half-life of a radioactive substance is constant, regardless of the amount of material present. This means that the amount of material that remains after one half-life is always half of the original amount.
Watching what happens in the bottom-half of the display can provide information about the decay of a nucleus. The bottom-half of a decay curve represents the amount of material remaining over time. As time passes, the amount of material decreases exponentially. The half-life can be calculated from the decay curve by finding the time at which half of the material has decayed.
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What angle is necessary to keep a 10 kg box motionless if the coefficient of static friction between the box and the ramp is 0.55?
a.33.4°
b.28.8°
c.56.6°
d.45.0°
Answers
The angle necessary to keep a 10 kg box motionless, given a coefficient of static friction of 0.55 between the box and the ramp, is 33.4°, which corresponds to Option A.
To determine the angle, we can use the relationship between the coefficient of static friction, the angle of the incline, and the gravitational force acting on the box. The maximum static friction force can be calculated using the formula:
Friction force = coefficient of static friction * Normal force
The Normal force can be found by decomposing the gravitational force acting on the box into components parallel and perpendicular to the incline. The perpendicular component (Normal force) is equal to the weight of the box (mass * gravitational acceleration).
Since the box is motionless, the friction force must be equal to the component of the gravitational force acting parallel to the incline:
Friction force = Component of weight parallel to incline
By substituting the given values and solving for the angle, we find:
coefficient of static friction = tan(angle)
angle = arctan(coefficient of static friction)
angle = arctan(0.55) ≈ 33.4°
Therefore, the correct answer is Option A, 33.4°.
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wich is a better deal, 5 tickets for $12.50 or 8 tickets for $20.16
Answers
5 tickets for $ 12.50
Explanation
to figure out this we need to find the unit rate
so
Step 1
the rate is given by:
\(\text{rate}=\frac{Numbe\text{r of tickets}}{\cos t\text{ of those tickets}}\)then
a) for 5 tickets and $12.50
replace and calculate
\(\begin{gathered} \text{rate}=\frac{Numbe\text{r of tickets}}{\cos t\text{ of those tickets}} \\ \text{rate}=\frac{5\text{ tickets}}{12.5\text{ \$}}=0.4\text{ tickets per dollar} \end{gathered}\)b) for 8 tickets and $20.16
replace and calculate
\(\begin{gathered} \text{rate}=\frac{Numbe\text{r of tickets}}{\cos t\text{ of those tickets}} \\ \text{rate}=\frac{8\text{ tickets}}{20.16\text{ \$}}=0.396\text{ tickets per dollar} \end{gathered}\)therefore, the better deal is 5 tickets for $ 12.50, you will get more tickets per dollar
I hope this helps you
Compare your everyday experiences to the simulation. Design a few tests like rolling things off a table or tossing some things into a basket or bowl to determine how well the simulation represents projectile motion. Some good objects are tightly rolled socks or paper crumpled into a ball. Write about your experiments and compare them to the simulation
Answers
If we throw a socks in to the bowl then it is going with a few unfold situation by means of the projectile and follows the trajectory. Crumpled paper use for the projectile additionally works gud for the simulation.
Crumpled paper has irregular form and mild in weight and it is able to divert in a way by air force or by means of any other motive mild weight. hence simulation and projectile interest are interlinked to every different.
Projectile motion is used in many real-life applications such as designing rockets, ballistic missiles, and artillery, as well as in sports such as baseball, golf, and archery. The concept of projectiles is also relevant in fields such as engineering, military science, and sports. For example, the design of a projectile such as a bullet or missile can affect its accuracy and effectiveness, while knowledge of projectile motion can aid in the design of sports equipment such as golf clubs or javelins.
When a projectile is launched, it follows a curved path known as a trajectory, which is determined by the initial velocity, angle of launch, and the gravitational and atmospheric forces acting on it. The motion of projectiles is studied in physics, where concepts such as projectile motion, trajectory, range, and maximum height are analyzed.
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The table shows the diameters of paper circles used to represent the planets.
What is the scale used in the table?
A.1 km = 10,000 cm
B.1 cm = 10,000 km,
C.1 km = 1,000 cm
D.1 cm = 1,000 km
Answers
Answer:
Option B
Explanation:
since,
4800km=0.48cm
Therefore,
1cm=4800/0.48
1cm=10,000km
the electrical operating conditions are typically measured with a(n):
Answers
The electrical operating conditions are typically measured with Multimeter, Oscilloscope, and Clamp Meter. Thus, option D is the accurate answer.
A multimeter is the most common and versatile instrument which is used to measure the voltage, resistance, and current passing through the conductors. IT can able to provide continuous frequency. An Oscilloscope is also a device used to measure electrical waveforms
A clamp Meter is a small handheld device that can able to measure both AC and DC currents in the circuit in digital format. It uses a small induction coil to measure the amount of current passing through the conductor.
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The complete question is:
the electrical operating conditions are typically measured with a(n):
a. Multimeter
b. Oscilloscope
c. Clamp Meter
d. All the above
PLEASE HELP WILL GIVE BRANLIEST, EXTRA POINTS!
Jailah needs a replacement for lithium for a science experiment. She tries silicon, but it does not work. Using what you know about patterns in the periodic table, which advice would you give Jailah?
A. Try a lanthanide series element.
B. Try a non-metal from the halogen group.
C. Try an element in the same group as lithium.
D. Try an element in the same period as lithium.
Answers
Answer:
C. Try an element in the same group as lithium.
Explanation:
Answer:
The answer is C.
Explanation:
I'm took the test on it
Intelligence test. If you get it right ,you are a critical thinker. You were in the garden,there are 34 people in the yard. You killed 30. How many people are in the garden.
Answers
The riddle is solved by knowing that there is only one person left in the garden and that is you.
How many people are in the garden?We are told that there were a total of 34 people in the yard. We do not know if these people are in the garden or somewhere around the yard. The next information we have is that a total of 30 persons were killed.
Since you killed them in the garden, the others may still be lurking somewhere in the yard thus there is only one person left in the garden and that is you.
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how many of the following statements are correct regarding the buckling of slender members? (i) buckling occurs in axially loaded members in tension; (ii) buckling is caused by the lateral deflection of the members; (iii) buckling is an instability phenomenon. 2 1 3 0
Answers
Based on the provided statements about buckling of slender members, the correct statements are Buckling is caused by the lateral deflection of the members and Buckling is an instability phenomenon. Statements (ii) and (iii)
Let's evaluate each statement's correctness:
(i) Buckling occurs in axially loaded members in tension: This statement is incorrect. Buckling occurs in axially loaded members under compression, not tension.
(ii) Buckling is caused by the lateral deflection of the members: This statement is correct. Lateral deflection causes the slender member to buckle under compressive loads.
(iii) Buckling is an instability phenomenon: This statement is correct. Buckling is a structural instability that occurs when a member's load-carrying capacity is exceeded, causing it to collapse or lose stability.
Based on the evaluation, 2 out of the 3 statements are correct (statements (ii) and (iii)).
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Match the definition with the appropriate word.
temperature
part of internal energy that can be
transferred
heat
measure of the average kinetic energy of a
substance
thermal energy
total potential and kinetic energies of the
particles in a substance
internal energy
thermal energy that flows from one
substance to another
Answers
Answer:
Temperature: measure of the average kinetic energy of a substance
Internal energy: total potential and kinetic energies of the particles in a substance
Heat: thermal energy that flows from one substance to another
Thermal energy: part of internal energy that can be transferred
Explanation:
Proof for correct answers on edge :)
comparing the speed of sound in liquids gases and solids
Answers
The speed of sound follows the order: solids > liquids > gases due to differences in particle arrangement and density within each medium.
Depending on the medium it passes through, sound travels at varying speeds. In general, sound travels more quickly through solids, next through liquids, and last through gases. This is because solids' tightly packed particles make it possible for sound waves to efficiently pass through the material's thick structure. As a result of the less tightly packed particles in liquids compared to solids, sound waves move through them more slowly. In comparison to both solids and liquids, gases have the least dense arrangement of particles, which causes their sound speed to be slower. The density and elasticity of the medium, among other things, affect the particular speed of sound in each material.
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The question is -
What is the order of the speed of sound in liquids, gases, and solids from highest to lowest?
The speed of sound is fastest in solids, followed by liquids, and then gases.
The speed of sound refers to how quickly sound waves travel through a medium. It varies depending on the state of matter of the medium. In general, sound travels fastest through solids, followed by liquids, and then gases.
When sound waves pass through a solid, such as a metal rod, the particles in the solid are closely packed together. This allows the sound waves to propagate more efficiently, resulting in a higher speed of sound. For example, in steel, the speed of sound is approximately 5,960 meters per second.
In liquids, the particles are still relatively close together, but not as tightly packed as in solids. This leads to a slower speed of sound compared to solids. For instance, in water, the speed of sound is about 1,482 meters per second.
Gases have particles that are much more spread out, resulting in a slower speed of sound. The speed of sound in gases is influenced by factors such as temperature and composition. For example, at room temperature, the speed of sound in air is approximately 343 meters per second.
It is important to note that the speed of sound can vary within each state of matter depending on factors like temperature and density. However, the general trend is that sound travels fastest through solids, followed by liquids, and then gases.
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A patient’s heart pumps 5.00 L of blood per minute into the aorta, which has a diameter of 1.80 cm. The average force exerted by the heart on the blood is 16.5 N. What is the average mechanical power output of the heart?
Answers
Pressure (P) = F/A
diameter = d = 1.80 cm = 0.018 m
F = force = 16.5 N
Volume pump = 5 L = 5000 cm^3 = 0.005 m^3
Area = pi* r^2 = pi* (0.018/2)^2 = 2.54 x10^-4 m^2
P = 16.5 / 2.54 x10^-4 = 64,840.9 N/m^2
Power = w *d / time = 64,840.9 N/m^2 * 0.005 m^3 / 60 s = 5.4 Watt
what was kobes passion for sports
Answers
How does asexual reproduction provide an advantage to the organisms that live on a rotting log?
Answers
Answer:
Only one parent is needed, and it is faster than sexual reproduction.
Explanation:
Sorry I'm not the best at explaining it but that's the answer.
asexual reproduction provides an advantage to the organisms that live on a rotting log by generating huge number of creatures in a very short amount of time
What is asexual reproduction ?Asexual reproduction refers to a type of reproduction where a child is born to a single parent. The newly created people are clones of their parents since they have the same genetic makeup and physical characteristics.
Both multicellular and unicellular species can reproduce asexually. There will be no gamete fusion involved in this procedure, and the number of chromosomes will remain the same. With the exception of specific situations where there is a possibility that a rare mutation will occur, it will inherit the same genes as the parent.
The benefits of asexual reproduction are as follows:
There is no need for mates.Rapid reproduction is the norm.In a very short amount of time, a huge number of creatures can be created.Adaptive genetic factors are passed down across generations.It happens in a variety of environments.Learn more about reproduction, refer the link:
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2 p
A neutral sodium atom has 11 protons, and a mass number of 23, how
many electrons does it have? *
11
12
23
34
Answers
Answer:
It has 11 electrons 23_11=11
A cable car is being pulled up a mountain at 7.5 meters per second. Usually, the car takes 120 seconds to move all the way up the mountain. If its velocity stays constant, how much time will it take the cable car to move 39 meters?
Answers
Answer:
5.2 s
Explanation:
From the question given above, the following data were obtained:
Velocity = 7.5 m/s
Displacement = 39 m up
Time =?
The time taken for the cable cab to get to 39 m can be obtained as follow:
Velocity = Displacement / Time
7.5 = 39 / time
Cross multiply
7.5 × time = 39
Divide both side by 7.5
Time = 39 / 7.5
Time = 5.2 s
Thus, the time taken for the cable cab to get to 39 m up is 5.2 s
WILL MARK BRAINLIEST PLEASE HELP AND SHOW ALL WORK
Consider the system shown in FIGURE 9-35. Assume that after the string breaks the ball falls through the liquid with constant speed. If the mass of the bucket and the liquid is 1.20 kg, and the mass of the ball is 0.150 kg, what is the reading on the scale (a) Before (b) After the string breaks?
Answers
Answer:
Same reading.
Explanation:
Assume that after the string breaks the ball falls through the liquid with constant speed. If the mass of the bucket and the liquid is 1.20 kg, and the mass of the ball is 0.150 kg,
A.) Before the string break, the total weight = weight of the can + weight of the water.
According to Archimedes' Principle which state that: “A body immersed in a liquid loses weight by an amount equal to the weight of the liquid displaced.” Archimedes principle also states that: “When a body is immersed in a liquid, an upward thrust, equal to the weight of the liquid displaced, acts on it
B.) After the string break.
The scale will have the same reading as before the string break.
How much friction acts on the bookcase when it is at rest on a horizontal surface without being pushed
Answers
Answer:
Friction force= 120 N
Explanation:
100 POINTS! Arches, Quintuplet, and GC are examples of names that astronomers have given to:
A: extinct asteroids.
B: galactic dust balls.
C. Supermassive black holes.
D: live massive star clusters
Answers
Arches, Quintuplet, and GC are not names given to extinct asteroids, galactic dust balls, or supermassive black holes. Instead, they are examples of names given to live massive star clusters. The correct option is D
Astronomers have identified these star clusters in various regions of our galaxy. The Arches cluster is located near the center of the Milky Way, while the Quintuplet cluster is found in the same vicinity.
These clusters are comprised of young, massive stars that emit intense radiation and are surrounded by dense clouds of gas and dust.
GC stands for "globular cluster," and it refers to a densely packed spherical collection of stars found in the galactic halo.
These star clusters are fascinating subjects of study for astronomers, as they provide insights into the formation and evolution of stars in our galaxy.
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Ma of a machine is always less than Vr
Answers
Answer:
MA of a machine is always less than VR.
Explanation:
It is because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant.
still don’t know what to do with this stuff
Answers
Answer:
what?
Explanation: