What is the flaw with using apparent brightness rather than absolute brightness to determine the brightness of a star?
Apparent brightness does not use the star's color or temperature.
Apparent brightness does not take into account the distance of the star from Earth
Apparent brightness is only theoretical, its value cannot be directly measured with equipment
Apparent brightness is only on a comparative scale that determines how bright a star looks from a theoretical distance of 10 parsecs
from Earth.
Don’t answer if you’re just going to put a link or file.
Help if you know and are sure
Answers
Answer:
Apparent brightness is only on a comparative scale that determines how bright a star looks from a theoretical distance of 10 parsecs
from Earth.
Related Questions
How do factors such as ocean currents, water temperature, and weather affect you in your daily life?
Answers
Answer:One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm.
Explanation:The majority of radiation from the Sun is absorbed by the ocean, particularly in tropical waters around the equator, where the ocean acts like a massive, heat-retaining solar panel. Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.
72 pts!!! Indicate on the wave graph the location of the following:
Answers
Answer:
A: crest
C: trough
B: wavelength
please give brainlist if it helps!!
Answer:
A: Wavelength
B: Trough
Crest
Explanation:
Do nutrients cause seagrass to grow more in this area? If so, are both nitrogen and phosphorus equally important? Explain your answer.
Answers
Seagrasses are a vital part of the marine ecosystem..
Seagrasses are submerged flowering plants found in shallow marine waters, such as bays and lagoons and along the continental shelf in the Gulf of Mexico. A vital part of the marine ecosystem due to their productivity level, seagrasses provide food, habitat, and nursery areas for numerous vertebrate and invertebrate species. The vast biodiversity and sensitivity to changes in water quality inherent in seagrass communities makes seagrasses an important species to help determine the overall health of coastal ecosystems. Seagrasses perform numerous functions:
Stabilizing the sea bottom
Providing food and habitat for other marine organisms
Maintaining water quality
Supporting local economies
Explain what happens as the heart grows bigger.
Answers
Initially, the heart may grow bigger as a compensatory mechanism to try to keep up with increased demands for blood and oxygen. For example, if a person engages in regular exercise, their heart may enlarge to accommodate the increased demand for blood and oxygen to the muscles.
However, if the heart continues to grow over time, it can become less efficient at pumping blood and may develop structural abnormalities that increase the risk of heart failure, arrhythmias, and other complications.
In some cases, cardiac hypertrophy may be reversible if the underlying cause is treated, such as by managing high blood pressure or heart disease. However, if left untreated, hypertrophy can lead to irreversible damage to the heart muscle and may require more aggressive interventions, such as medication, surgery, or other medical procedures to manage the condition.
PLS help me with this its due soon!!
Devon ran a race on a flat track. He did not keep a constant speed during the race. The diagram below shows how fast he was running at different points on the track.
At which point on the track did Devon have the most energy of motion?
Answers
Answer: he ran with the most energy from the first to the second point…(2.1 m/s - 4.5 m/s)
Explanation:
Find in your house (or among your friends) either a pair of glasses or a magnifying glass. Examine it closely.
a. What kind of lens is it?
b. Draw a sketch of it and name the type of lens.
2. You will need a magnifying glass and a small piece of scrap paper for this demonstration.
a. Go outside on a sunny day and put the piece of paper on a patch of asphalt, concrete, or a large flat rock. Make sure there is no other combustible material or debris in the vicinity.
b. Hold the magnifying glass so it is close to the paper, with rays of sunlight shining through it. Move the magnifying glass side to side and close or away from the paper until the most concentrated ray of light is shining on the paper. This is the focal point for that magnifying glass.
c. Measure the distance between the focal point and magnifying glass. This is the focal length for that magnifying glass. (Be careful; if you hold the magnifying glass in that place for long enough, the paper will catch fire. Do not ever do this on your skin or clothing, as it can cause serious burns.)
d. Now take the magnifying glass inside and use it to look at the words in a book. What is the focal length now?
Answers
Hope this helps
Answer:
yes
Explanation:
its an experiment just do it
When sound waves cause the eardrum to vibrate, these vibrations are immediately passed on to the _______________.
outer ear and ear canal
tiny hairs
three small bones in the middle ear
inner ear
Answers
Answer: three small bones in the middle ear
Explanation: Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.
When sound waves cause the eardrum to vibrate, these vibrations are immediately passed on to the three small bones in the middle ear. So, the correct option is C.
What are Sound waves?A sound wave is defined as a pattern of disturbance that is caused by the movement of energy that travels through a medium such as air, water or any other liquid or solid substance as it propagates away from the source of the sound which is the object made by vibration and pressure generate waves, for example, a ringing cellphone.
These waves enter the outer ear and pass through a narrow passage called the ear canal leading to the eardrum which vibrates with the incoming sound waves and sends these vibrations to three small bones in the middle ear where these bones are called malleus, incus. and steppes.
Thus, the correct option is C.
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help me i suck at physics ;-;
A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount
of force acted on the ball?
Answers
force= mass x acceleration= 0.2 x 20= 4 N
(N stands for newton btw)
A woman is walking at 4 m/s. She is accelerating at a rate of 1 m/s2. To find out what her velocity is after 3 seconds, what else do you need to know?
Answers
Answer: Displacement
do footballers get paid even though they do not win a match?
Answers
Answer:
However, in general, football players are paid whether they are paid or not. However, it is clear that if they are not on the field, they will not get a win, a goal or more.
Answer:
no
Explanation:
they shouldn't get paid unless they win
if a marble took 1.63 seconds to go the first 50cm's, and 1.89 seconds to go the second 50cm's, and then 2.69 seconds to go the whole 100cm's, what was the average velocity and acceleration for the marble?
Extra info: The table was tilted 20 degrees upwards
Please answer an real answer and not a bunch of random words or letters, or I will report you. Thank you! <3
Answers
Answer:
Students measure the distance a marble rolls and the time it takes to roll. They then calculate the speed using the equation: Speed = Distance / Time.Jan 16, 2017
Explanation:
Jaipal measures a circuit at 1.2 A and 24 . Using Ohm’s law, what can he calculate for the circuit? current (C) current (I) voltage (V) voltage (A)
Answers
Answer: voltage (V)
Explanation:
Hi, in the answer the letter A (1.2 A) stands for Ampere, and the symbol next to the number 24 must be Ω 8 (Ohms)
So, applying Ohm's law:
Voltage (V) =current (I) x resistance (R)
V = I x R
Replacing with the values given;
V = 1.2 A x 24Ω
In conclusion, we can calculate the value of Voltage for the circuit.
Feel free to ask for more if needed or if you did not understand something.
Answer:
voltage
(V)
Explanation:
two element in the same group
Answers
Answer: Li , Na
Lithium Sodium
URGENT!!
What occurs when the trough of one light wave meets the crest of another lightwave?
destructive interference
constructive interference
wave building
wave destruction
Answers
Answer: destructive interference
Explanation:
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
Using a periodic table, the symbol Ag stands for: A. Silver B. Cesium C. Potassium D.Gold RIGHT ANSWER GETS BRAINLIES
Answers
A. Silver is the answer
Have an awesome day
God bless!
Compare the periodic table of energy levels to the Lewis dot diagrams. Look at the dots around each symbol and the energy levels in your chart. What relationship do you notice between the dots in these two charts?
Answers
Answer:
hi what doing
Explanation:
PLEASE HELP ASAP
How are force and velocity related? Give evidence to support your answer.
Answers
Which of the following statements regarding electric insulators is correct?
Electric insulators are good heat conductors.
Electric insulators have high tensile strength.
Electric charges move freely in electric insulators.
Charges within electric insulators do not readily move.
Answers
Answer:
d because they are poor electricity and heat conductors
Please help!!!!!!!! 25 points
Answers
Answer:
B: beaks, finches.
Explanation:
Beaks, finches. This is because he noticed that fruit-eating finches had beaks similar to parrots, while finches that ate insects had narrow beaks. The difference in their beaks is due to adapting to different environments which causes them to evolve into different species of finches.
Dhhdbdndn
All the organelles in a cell work together to help the cell and the whole organism function. Some diseases are caused by the failure of one type of organelle. Read the description below of an example of this type of disease.
Lauren has cystic fibrosis. Her body is unable to control the flow of salt into and out of her cells. Lauren’s symptoms include coughing and wheezing when she tries to exercise. She receives breathing treatments that let her swim, dance, and sing. Which organelle is affected by Lauren's disease?
A. endoplasmic reticulum
B. cell membrane
C. cytoplasm
D. cell wall
Answers
Discuss one component of your school's recycling system that could be automated and predict the economic impact.
Answers
One component of my school's recycling system that could be automated is the sorting of recyclables. Currently, the school relies on students and staff to sort recyclables into the appropriate bins, which can be time-consuming and may result in contamination if materials are not sorted properly.
Automating the sorting process with a machine or conveyor belt system could improve the efficiency and accuracy of the recycling system. It could also potentially reduce labor costs associated with manual sorting.
The economic impact of automating the sorting process would depend on the initial cost of the equipment and any associated installation or maintenance costs. However, over time, the improved efficiency and accuracy of the system could result in cost savings for the school. Additionally, the increased efficiency of the system could potentially lead to increased recycling rates, which could result in cost savings for waste disposal and potentially generate revenue through the sale of recycled materials.
Answer:
Our school has color coded virtual trash cans. For example, a trash can for only paper will only accept paper items, if the item put inside is not paper, it will litter it out and all students have cleaning duties throughout the week so even if you or someone litters you’ll probably have to clean it up at some point anyways. I honestly think it’s very cool. (i wish this was true smh).
Use the data in the table to explain how you could determine the volume of the block.
Answers
To find the volume of the block, subtract the initial water volume from the final water volume, convert the change in water volume to cubic centimeters, and consider it as the volume of the block.
To find the volume of the block using the measurements provided.
1. Calculate the change in water volume:
The initial water volume is given as 62.3 mL, and the final water volume is given as 89.5 mL. To determine the change in water volume, we subtract the initial volume from the final volume: 89.5 mL - 62.3 mL = 27.2 mL. This value represents the increase in water volume caused by placing the block in the graduated cylinder.
2. Convert the change in water volume to cubic centimeters:
Since 1 mL is equivalent to 1 cubic centimeter (cc), we can directly convert the change in water volume from milliliters to cubic centimeters. In this case, the change in water volume is 27.2 mL, which is also equal to 27.2 cc.
3. Determine the volume of the block:
When the block is placed in the graduated cylinder, it displaces some amount of water, resulting in an increase in water volume. By measuring this increase in volume, we can determine the volume of the block itself. In this case, the change in water volume of 27.2 cc represents the volume of the block.
By following these steps, we can find the volume of the block based on the provided measurements.
Therefore, By deducting the initial water volume from the final water volume and converting the difference in water volume to cubic centimeters, the block's volume can be calculated. the volume of the block is 27.2 cc.
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•Then I should :calculate the time of the block to fall
Which is not true about the pH scale?
The pH scale measures acids and
bases from 1 to 14 on a scale.
The pH scale focuses on the
concentrations of H+ and OH jons
In a solution.
The pH scale was invented by
Svante Arrhenius.
A very strong acid would have a
pH reading close to 1.
Answers
Answer:
The pH scale was invented by Svante Arrhenius is false.
Explanation :
because the pH scale was invented by Soren Sorensen
which types of EM radiation from the sun are most likely to reach Earth's surface, waves with short wavelengths or those with long wavelengths? Explain.
Answers
Which types of EM waves can reach Earth's surface?
Most electromagnetic radiation from space is unable to reach the surface of the Earth. Radio frequencies, visible light and some ultraviolet light makes it to sea level. Astronomers can observe some infrared wavelengths by putting telescopes on mountain tops.
Electromagnetic radiation with wavelengths between 0.01 nanometer and 20 nanometers is referred to as X-rays. Being more energetic than visible light, X-rays are able to penetrate soft tissues but not bones, and so allow us to make images of the shadows of the bones inside us. While X-rays can penetrate a short length of human flesh, they are stopped by the large numbers of atoms in Earth’s atmosphere with which they interact. Thus, X-ray astronomy (like gamma-ray astronomy) could not develop until we invented ways of sending instruments above our atmosphere (Figure 2).
True or False? If the ball hits any line when it is NOT on the serve, it is in bounds. Pickle Ball for PE
Answers
Answer:
Well according to volleyball rules, if the ball hits the out of bounce line, its considered in.
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
plz hurry How fast can work be done by a 7 horsepower engine?
Answers
Answer:
It will go about 45-50 mph.
Explanation:
Depending on what you are hauling.
Which direction will a magnet point, if it is suspended in space by an astronaut? Please explain...