Two starts are visible from Earth ,Star A “appears” brighter than shad B , but their luminosity ( absolute magnitude ) is the same .
Why does star A appear brighter than B ?

Answers

Answer 1
This could be because star A is closer to Earth than star B is, making it appear brighter.

Related Questions

In humans, if a non-disjunction event led to an individual with a genotype of xxy, they would.

Answers

In humans, if a non-disjunction event led to an individual with a genotype of XXY, they would be male because they have a Y chromosome.

What are X and Y chromosomes?

The X chromosome and Y chromosome are homo-logous chromosomes that determine the se_x in mammals.

The presence of the Y chromosome is indicative of the males, whereas two X chromosomes are females in normal conditions.

Non-disjuntion refers to the faulty separation of homo-logous chromosomes during meiosis.

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A global mind-set is an increasingly valued _________ trait.

Answers

Answer:

task-oriented

Explanation:

A global mind-set is an increasingly valued task-oriented trait.

Answer:

A global mindset is an increasingly valued task-oriented trait.

Explanation:

A global mentality is a task-oriented attribute that is becoming more appreciated. All characteristics are either positive or bad, and excellent leaders should have only positive characteristics. The implications of leadership traits cannot be ignored.

help me with this science question

Answers

Answer:

The second and third options are erosion

Explanation:

A dust storm passing through the area isn't really relevant, limestone dissolving in the acid rain is chemical weathering, and a rock cracking as it expands is mechanical weathering in response to thermal stress.

Definition of pandemic ​

Answers

A definition of a pandemic is a wide spread of illnesses or disease that affects the entire population

Technological devices are designed to convert one form of energy into another form of energy to complete a certain task. The converted energy not used to complete the intended task is called
A. excess energy
B.useful energy
C.waste energy
D. input energy

Answers

Answer:

D

Explanation:

I'm sure this is the correct amswer

The converted energy not used to complete the intended task is renowned as input energy. The correct option is D.

What is input energy?

The amount of energy that is generally put into a device is referred to as input energy.

In technological device, input energy is the one that is not used to complete the tasks is referred to as input energy.

Thus, the correct option is D.

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Which of the following is least involved in the mechanical breakdown of food, digestion, or absorption?.

Answers

Answer:

Esophagus

Explanation:

In the digestion and absorption of food, the esophagus is the least involved.

It is a part of the digestive system, but all it does is simply pass the food down to the stomach.

The one that is least involved in the mechanical breakdown of food, digestion, or absorption is esophagus. The correct option is d.

Even though it is a vital component of the digestive system, the esophagus plays a much smaller role in the mechanical digestion of food than the other alternatives.

A muscular tube called the esophagus moves food from the mouth to the stomach by a process known as peristalsis, which calls for repetitive muscle contractions.

Its main job is to push food down the digestive tract so that it can travel more easily. Food is mostly mechanically broken down in the mouth while being chewed by the teeth and in the stomach while being churned by muscles.

The majority of digestion and nutrient absorption occurs in the small intestine.

Thus, the correct option is d.

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Your question seems incomplete, the probable complete question is:

Which of the following is least involved in the mechanical breakdown of food, digestion, or absorption?.

a) Stomach

b) Teeth

c) Small intestine

d) Esophagus

What is mechanical digestion? Describe the first stage of mechanical digestion.

Answers

Mechanical digestion means breaking down food mechanically. By chewing and tearing with teeth, food breaks down into smaller parts and no enzymes are used.

What is the first step in mechanical digestion?

The complex pieces of food that are eaten have to be split into simpler particles that can be acted upon by different enzymes.

This is mechanical digestion, which starts in the mouth with chewing or mastication and continues with churning and combining actions in the stomach.

Thus, this could be the answer.

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Non-flowering plants are known as seedless plants​

Answers

Answer:

i would say True Beauce there put in the same category

(Non-flowering and seedless plants are known as cryptogams)

Which animals are cold-blooded, breathe with lungs, most lay eggs, although in some the eggs hatch inside the female, and have scales or plates? question 17 options: fish reptiles mammals amphibians

Answers

Answer:

Fish is the answer

Explanation:

Tell me if I’m wrong or right, it just makes the most sense.

Also this is my first brainless answer!

According to the given information, the animals belong to reptiles.

What are the characteristics of reptiles?The class reptiles are cold-blooded animals which means that the temperature of their body changes according to the surrounding temperature.They mostly lay eggs and in some cases, the eggs are hatched by the females inside the water.Their body has scales or plates to protect themselves from predators. They live on land and in water for some time and respire using their lungs.

Thus,  the animals belong to reptiles.

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Which repair process in e. Coli uses visible light to repair thymine dimers?.

Answers

Answer:

photoreactivation repair

Explanation:

Photoreactivation utilizes the enzyme photolyase to break the bonds formed during pyrimidine dimerization. A thymine dimer produced by UV irradiation is bound by photolyase. Visible light energy is absorbed by photolyase and is redirected to break the bonds forming the dimer.

In addition to bacteria, this DNA repair mechanism is also found in single-celled eukaryotes, plants, and some animals such as Drosophila.

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?.

Answers

Answer:

The correct answer is a synergist.

Explanation:

The muscles that provide movement in the musculoskeletal system act in groups or pairs, such as the hamstrings and quadriceps, or the biceps and triceps. An agonist, often known as a primary mover, is a muscle that works.

Synergists are muscles that assist the prime mover by moving in the same direction and at the same time. Synergists provide a motion similar to that of the prime mover while also stabilizing the joints that hold the agonist in place for smooth movement.

As a result, the correct response is synergist.

Which of these describes a pathogen that infects a human
by injecting its DNA into a body cell?
A bacterium that creates a toxin that destroys the
cell, keeping the cell from working in a normal
manner

A parasite that robs the ćell of nutrients, interfering
with organ functions

O A fungus that eats keratin found in skin cells,
causing inflammation and interfering with the skin
tissues' ability to protect

A virus that changes the way a cell works, causing
the cell to make more viruses instead of performing
its intended function

Answers

Answer:

the ans is

A virus that changes the way a cell works,causing the cell to make more viruses instead of performing its intended function.

What process creates the carbohydrates in this ecosystem?

Answers

Answer:

Photosynthesis creates the carbohydrates in the ecosystem.

Explanation:

Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants.

is it 0.05, 0.04, 0.15 and 0.80

Answers

Answer:

No

Explanation:

I have 0.04 cents, you have 0.05, Mom has 0.15, and dad has 0.80

How many atoms are in the unit cell of a body-centered tetragonal space lattice?

Answers

Answer:

2 atoms

Explanation:

BCT stands for body-centered tetragonal space lattice. It is a crystal structure of 8 atoms forming tetragon corners with one central atom. BCT has 2 atoms per unit cell.

What is body-centered tetragonal space lattice?

BCT is an 8 atom crystal structure which forms tetragon corners and one atom in center. It has 2 atoms in a unit cell.

It is related to material science, physics and crystallography.

It is actually a distortion of the bcc lattice, It is the monatomic analog of the L10 structure.

Thus, body-centered tetragonal space lattice has 2 atoms in the unit cell.

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The first of these to occur when a new volcanic island rises out to the sea is

topsoil is formed.
lichens grow.
mosses grow.
rock cools and cracks.

Answers

Answer:

D

Explanation:

Rock cools and cracks because the topsoil can't be formed until the rocks crack, and if the topsoil isn't formed then nor lichens nor mosses can grow.

Major areas of science include
physical science
basics science
life science
ethical science
social science​

Answers

Answer:

physical earth and life science

Explanation:

Answer:

physical earth and life science

Explanation:

A tall pea plant (Tt) is crossbred with a short pea plant (tt). The following Punnett square shows the separated alleles for two pea plants.

Punnett square showing female parent across the top with a phenotype of tall and a genotype of Tt and a male parent across the side with a phenotype of short and a genotype of tt. Inside the top left box 1 is written, inside the top right box 2 is written, inside the bottom left box 3 is written, inside the bottom right box 4 is written.

Which of the following shows the correct match of the box numbers and the genotype of the offspring?

1 = Tt; 2 = tt; 3 = Tt; 4 = tt
1 = Tt; 2 = Tt; 3 = Tt; 4 = Tt
1 = Tt; 2 = Tt; 3 = tt; 4 = tt
1 = Tt; 2 = tt; 3 = tt; 4 = tt

Answers

Answer:

the first option is correct

1 = Tt; 2 = tt; 3 = Tt; 4 = tt

True or false. A trna with an anticodon complementary to the stop codon catalyzes the reaction by which translation is terminated.

Answers

Answer:

It is false not true that is the answer

Use the drop-down menus to indicate where each exocrine system structure is located. the liver and pancreas are located in the . the goblet cells are located in the . the oil and sweat glands are located in the . the salivary and lacrimal glands are located in the .

Answers

The liver and pancreas are placed withinside the abdomen.The goblet cells are placed withinside the top layers of organs.The oil and sweat glands are placed in the skin.

What is the exocrine system?

The salivary and lacrimal glands are placed withinside the face land that makes materials along with sweat, tears, saliva, milk, and digestive juices, and release them thru a duct or beginning to a frame surface.

Thus it is well explained.

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Answer:

The liver and pancreas are located in the  abdomen.

The goblet cells are located in the top layers of organs.

The oil and sweat glands are located in the skin.

The salivary and lacrimal glands are located in the face.

Explanation: Correct

Dendrites within interneurons have multiple synapses due to ______

Answers

Answer:

Dendritic tree with many synapses. It is shown that dendrites have extensive connections with the axons in the form of axodendritic synapses, which form an important mode of communication between neurons (see Synapse below and Ch. 6, p. 110).

Explanation:

hope it helps..✌️✌️

50 points and I will mark you a brainlest!

How does adding carbon dioxide to the ocean
affect its pH?

Provide an explanation for the results (or what should have happened) using SCIENTIFIC REASONING

Answers

Explanation:

Because of human-driven increased levels of carbon dioxide in the atmosphere, there is more CO2 dissolving into the ocean. The ocean's average pH is now around 8.1 , which is basic (or alkaline), but as the ocean continues to absorb more CO2, the pH decreases and the ocean becomes more acidic.

Which principle of heat exchange is the most important explanation for why birds look larger in colder weather because they fluff their feathers?.

Answers

Fluffing creates a pocket of air near the bird that acts as insulation.

Which of the following does water pollution affect: surface water, ground Water, or ocean water? A)Pollution affects surface water and ground water only.
B)Pollution affects surface water, ground water, and ocean water.
C)Pollution affects surface water and ocean water only.
D)Pollution affects groundwater and ocean water only.

Answers

Water pollution includes any kind of water masses or currents. Option B is correct. Pollution affects surface water, ground water, and ocean water.

What is water pollution?

Water pollution can be defined as the abnormal accumulation of strange elements in the water with harmful consequences to natural ecosystems.

Water pollution involves all the possible ways in which any water body can be contaminated with harmful elements.

The most damaging source of water pollution is human activities, producing the biggest damage to natural ecosystems.

Contaminating elements might be either gasses, solid material, or liquid material. Chemical elements, microbiota, heavy metals, and sediments affect all forms of life.

As said before, several sources can contaminate water masses, and they do it directly and indirectly.

Directly pollution occurs when a strange element is thrown directly into the water. They can be thrown directly into a river, a lake, the sea, or the ocean.

Indirect pollution occurs when pollutants travel from other places and contaminate other masses of water. For instance, a polluted river contaminates the lake where it ends. The lake pollutes the river that begins in the lake. This last river ends in the sea and takes all pollutants to the sea.

We can affirm then that water pollution affect surface water, ground water, or ocean water. Option B is correct. Pollution affects surface water, ground water, and ocean water.

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Answer: pollution affects surface water, groundwater and ocean water

Explanation: I did the test and this is an easier answer then reading through the whole other one

The section of dna being used to make the strand of mrna is known as a.

Answers

The section of DNA being used to make the strand of mRNA is known as the transcription unit.

What are transcription units?

Transcription units are base sequences of DNA that make up a single mRNA molecule during the process of transcription.

During gene expression, genes are first transcribed to genetic codes in mRNA molecules before being translated to their respective proteins.

Each unit of transcription represents a gene along with non-coding base sequences in DNAs, otherwise known as introns.

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3. use the simulation to observe the first-generation offspring from the cross between flowers c and a. what is the most likely genotype of flower c? use a punnett square to justify your explanation.

Answers

To observe the first generation offspring of the cross between the flowers c and a. the most likely genotype of flower c is its color.

What is genetic probability?

Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck. It can be defined by the following formula: Where P is the probability that an event will occur, A is the number of desired events, and S is the total number of possible events.

With this information, we can observe the first generation offspring of the cross between the flowers c and a. the most likely genotype of flower c is its color.

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Answer: The most likely genotype is color.

Explanation:

What adaptation has the stigma developed that helps with fertilization?

Answers

An adaptation in the stigma that helps with fertilization is the ability of pollen grains to germinate on this structure. It allows plants to reproduce.

What is an adaptation?

An adaptation can be defined as a type of trait that allows organisms to survive and reproduce in particular conditions.

Adaptation favors the process of natural selection, which involves differential survival and reproduction.

Moreover, stigma is a plant structure that receives pollen grains (male gametes) during fertilization.

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What 3 things increase CO2 in the atmosphere?
I need the answers asap
Please

Answers

Answer:

Deforestation

Burning of fossil fuels

for energy and transportation

Answer:

Volcanic Eruptions, burning fossil fuels, deforestation, fluorinated gases

Explanation:

Natural:

Volcanic Eruptions

Human:

Deforestation, Burning of fossil fuels, use of fluorinated gases

Your parents have had a leaky pipe underground in your

backyard for years. You have two trees in the backyard. One is located closer to the leaky pipe while the other tree is farther away. What will be the response of the tree that is further away?

Stimulus:

Tropism:

Response:

Answers

Hydrotropism is the root motion toward the water source. In the example, Stimulus: Water. Tropism: Hydrotropism. Response: Roots growth toward the water leak.

What is Tropism?

In botanic tropism refers to the biological response of the plant during its development to an external stimulus. These responses are usually noticed as plant motion, forward to or away from the stimulus source.

Stimuli can be good or bad for the plant, and depending on this, the plant will try to get closer or farther. According to this, Tropism can be either positive or negative.

Positive tropism ⇒ the plant moves forward to the stimuli sourceNegative tropism ⇒ The plant moves away from the stimuli source

According to the stimuli, there are different kinds of tropism,

                                                                       

         Tropism                           Stimuli          

Phototropism                  LightGeotropism                     GravityHydrotropism                  WaterTigmotropism                  Solid objectChemotropism                 Chemical Airtropism                         Air                  

In the exposed example,

Stimulus   ⇒  Water from the leaky pipe

Tropism   ⇒   Hydrotropism    

Response  ⇒ The tree roots grow forward to the leak looking for  

                               water source

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PLEASE HELP ME ITS AN EMRGENCY!!!!!!

Answers

I believe the population of animals with the greatest change are the deers.

deer population in total by 21%racoon population remained the samemice population decreased by 12%opossum population decreased by 3%alligators population decreased by 6%

Hope that helps!

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