Reliability is another name for the precision of the measurement, and it means how well the value is repeated; this is, how close the different measurements are to each other. If the measurements are close one to each other, then the instrument is precise or reliable (high reliability).
Validity is another name for the accuracy of the measurement; this is, how close the measurement is to the true or accepted value.
With that, we can compare the reliability (precision) and validity (accuracy) of the four different thermometers.
Repeat the table:
Temperatures in °C:
Thermometer Reading 1 Reading 2 Reading 3
W 100.1 99.9 96.9
X 100.4 102.3 101.4
Y 90.0 95.2 98.6
Z 90.8 90.6 90.7
Reliability:
To analyze reliability (precision) we must compare the measures of every thermometer among them. A good approximation can be made calculating the range, i.e. the difference between the largest and the smallest readings:
For W: largest reading - smallest reading = 100.1°C - 96.9°C = 3.2°CFor X: largest reading - smallest reading = 102.3°C - 100.4°C = 1.9°CFor Y: largest reading - smallest reading = 98.6°C - 90.0°C = 8.6°CFor Z: largest reading - smallest reading = 90.8°C - 90.6°C = 0.2°CNow, you conclude that the most reliable is thermometer Z and the least reliable is thermometer Y. The complete ranking, from most reliable to least reliable is:
Z > X > W > Y
Validity:
To determine validity you must compare the mean of the three measures for each thermometer with the accepted value for the boiling point of pure water (100.0°C).
The mean is the sum of the three readings divided by 3.
The absolute error is calculated with the formula:
absolute error = | accepted value - calculated value |.
The calculated value is the mean.
For W: mean = (100.1 + 99.9 + 96.9)°C / 3 = 99.0°C
absolute error = 100.0°C - 99.0°C = 1.0°C
For X: mean = (100.4 + 102.3 + 101.4)°C / 3 = 101.4 °C
absolute error = 101.4°C - 100.0°C = 1.4° For Y: mean = (90.0 + 95.2 + 98.6)°C / 3 = 94.6°C
absolute error = 100.0°C - 94.6°C = 5.4°C
For Z: mean = (90.8 + 90.6 + 90.7)°C / 3 = 90.7°C
absolute error = 100.0°C - 90.7°C = 9.3°C
Now you can rank the thermometers as per their validity (accuracy):
1.0°C < 1.4°C < 5.4°C < 9.3°C
Thus, W is the most accurate, X is the second most accurate, Y is the third, and Z is the least accurate.
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If a wire carrying an electric current is placed in a magnetic field, a force is produced. What name is given to this effect?
Answer:
The Motor Effect
Explanation:
:)
Answer:
The Motor Effect
in addition to glucose and chloride, which electrolyte is a component of peritoneal dialysate fluid?
In addition to glucose and chloride, other electrolytes that are components of peritoneal dialysate fluid are magnesium, sodium, and calcium.
What are electrolytes?Electrolytes are solutions or molten substances which conduct electricity as a result of ions present in the them.
The ions present in body fluids such as blood and interstitial fluid are known as electrolytes.
The peritoneal diasylate fluid contains several electrolytes such as chloride, sodium, calcium and Magnesium.
Therefore, electrolytes are present in body fluids.
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When you are exposed to bright light, cells in the retina detect the stimulus and send it to the brain for processing. The brain commands the iris to constrict and decrease pupil size. Which structure serves as a receptor in this system
When you are exposed to bright light, cells in the retina detect the stimulus and send it to the brain for processing. The brain commands the iris to constrict and decrease pupil size.
The structure that serves as a receptor in this system is Retina
How can we see the object?Organisms adapted and evolved the eyes to see the surrounding environment. This ability to see begins when the visible wavelength of light enters the eye through a transparent covering called Cornea. The light enters the cornea and enters the inner of the eye through a round hole known as the pupil.
The light rays then enter the convex-shaped lens in the eye which focuses the beam of light on the back of the eye in the region of the tissue called the retina. The retina contains the photoreceptor cells-rods and cones in which the cone cells have the ability to detect three wavelengths of light especially blue, green and red which help us see various versions of the colour.
These cells convert light energy to chemical energy in the form of the action potential which gets transmitted to the part of the brain associated with the vision. This completes the pathway of the vision.
Thus, Retina is the answer.
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Select the correct answer from each drop-down menu. cholera is a bacterial infection of the small intestine. vaccination provides protection against cholera. the cholera vaccine is made up of a weakened form of the bacteria that causes cholera. the vaccine will stimulate production and elicit an immune response. if the infection occurs again, the body will produce an even greater attack on the bacteria because of .
The correct option are as follows:
cholera is a bacterial infection of the small intestine.
vaccination provides protection against cholera.
the cholera vaccine is made up of a weakened form of the bacteria that causes cholera.
the vaccine will stimulate production and elicit an immune response.
If the infection occurs again, the body will produce an even greater attack on the bacteria because of acquired immunity.By injecting a heat-killed, weakened organism or its component (antigen) into the body, vaccination aids in the development of immunity. Memory cells and antibodies are produced as a result.Memory cells aid in the development of immunological memory, which helps the immune system to respond to microorganisms that the body has previously encountered with greater strength and efficiency during a secondary immune response.Memory B cells and memory T cells aid in the development of immunological memory.learn more about cholera here: https://brainly.com/question/11346645
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What do you think the climate is like where this palm tree grows?
Awnser: Tropical zones
Explanation:Unsurprisingly, the researchers found that most types of palms are clustered in tropical zones. Most palms flourish in areas with mean annual temperatures between 64 and 82 degrees Fahrenheit, but a few hardy varieties don't mind damp, cold feet
If a human has an X and a Y chromosome pair, they are Otrue-breeding O female Ohybrid O male
Answer:
They are a male.
Explanation:
Determine whether the statement is true or false, and why. “If a theory becomes supported by evidence, it can become a law.” A. False, it should read, “A theory and a hypothesis are already equally supported by evidence, but they have different functions.” B. False, it should read, “If a theory becomes supported by evidence, it can become a hypothesis.” C. False, it should read, “A theory and a law are already both supported by evidence and are equal, but they have different functions.” D. True
The statement "If a theory becomes supported by evidence, it can become a law" is false because it should read, “A theory and a law are already both supported by evidence and are equal, but they have different functions.” Thus, the correct option is C.
What is Evidence?Evidence may be defined as the general body of attributes or information suggesting whether speculation or recommendation is authentic or valid.
In scientific methods, both theory and law are supported by evidence but they have different functions.
The function of theory illustrates an explanation of the statements and discoveries accumulated during the process.
While the function of law illustrates an experimental circumstance in nature that is genuine whenever it is positioned to experiment.
Therefore, it is well described above.
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When your body goes into fight-or-flight mode, what happens to the oxygen that is in your brain?.
Answer:
Fight or flight
The amygdala activates this fight-or-flight response without any initiative from you. When that part of your brain senses danger, it signals your brain to pump stress hormones, preparing your body to either fight for survival or to flee to safety.
What organisms comprise the invertebrate chordates?
The invertebrate chordates include Tunicates and lancelets.
What are invertebrate chordates?They are a group of chordates that possess notochords somewhere in their life span but end up not possessing the vertebral column. They possess all the characteristics of chordates.
Invertebrate chordates include the Urochordata which are the Tunicates and the Cephalochordata which are the lancelets.
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Regulating hormones from the hypothalamus ________
Regulating hormones from the hypothalamus first enter into the hypophyseal portal system.
Are hormones regulated by the hypothalamus?The hormones produced by the hypothalamus and secreted by the neurohypophysis are antidiuretic hormone and oxytocin. Antidiuretic hormone promotes an increase in urine concentration, as it ensures greater reabsorption of water by the kidneys.
It is the hypothalamus that produces the antidiuretic hormone and oxytocin, which will be secreted by the neurohypophysis.
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The __________cranial fossa ranges from the posterior edge of the lesser wings of the sphenoid bone (anteriorly) to the anterior region of the petrous part of the temporal bone (posteriorly). It houses the temporal lobes of the brain and the pituitary gland.
The middle cranial fossa ranges from the posterior edge of the lesser wings of the sphenoid bone (anteriorly) to the anterior region of the petrous part of the temporal bone (posteriorly). It houses the temporal lobes of the brain and the pituitary gland.
Where is the Pituitary gland located?Pituitary gland is located within the Mid-brain. It is an endocrine gland, about the size of a pea, that sits in a small, bony cavity at the base of the brain whose secretions control the other endocrine glands and influence growth, metabolism, and maturation.
It lies in the Sella turcica of the sphenoid bone (A compound bone at the base of the skull behind the eyes)
Thus, the middle is the answer.
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Increasing substrate concentration restores enzyme activity that has been blocked by:.
Answer:
a conpatitive inhibitor only
Which type of scientific statement is defined as "a possible explanation or answer to a scientific question that is based on
prior knowledge or research and is testable"?
hypothesis
O theory
O law
O probability
Which characteristic is used to measure the amount of light radiated by a star?
size
color
luminosity
temperature
Using the ultrasonication and agitation method of liposome preparation, what concentration of lipid is necessary to prepare liposomes with a diameter of 250 nm?.
The concentration of lipids necessary to prepare liposomes with a diameter of 250 nm is 0.30 mM.
What are liposomes?Liposomes are vesicles which are made up of a lipid bilayer membrane.
Liposomes are important as delivery vehicles for substances such as drugs.
Ultrasonication is a method of liposomes preparation.
Solution of liposomes is dependent on the size.
The larger the diameter, the smaller the l elution volume. Also, increasing lipid concentration will decreases elution volume.
Therefore, the concentration of lipids necessary to prepare liposomes with a diameter of 250 nm is 0.30 mM.
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What conclusion about the bacteria domain could be made from the phylogenetic tree below?
Plants and animals evolved from the Bacteria domain.
Bacteria and Eukarya are more similar than Archaea and Eukarya.
Bacteria and Archaea have similar evolutionary traits.
Eukarya and Bacteria developed on the same evolutionary line.
The correct answer is Eukarya has similar evolutionary traits to Archaea.
Thus, option "D" is correct.
What is the six kingdom classification by Carl Woese?The six kingdom classification by Carl Woese divided the organisms into three domains which are Bacteria, Archaea, and Eukarya. the archaea and Eubacteria are micro-organisms while plants, animals, and microorganisms such as fungi and protists under Eukarya.
The Eukaryotes are more closely related to the Archaea than bacteria as:
1. Transcription - they both use same TATA-binding proteins-TFIIB and elongation factors.
2. Translation- First amino acid during protein synthesis is the same in both the organisms which is methionine.
3. Histones - same histones are involved in the packaging of DNA.
4. Sensitivity to antibiotics- both are insensitive to antibiotics.
Thus, Eukarya has similar evolutionary traits to Archaea is the correct answer, option "D" is correct.
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Transcribe the following DNA sequence into its corresponding base pair strand: 5'-ATGGCCGGTTATTAAGCA-3'?
Answer:
3' -TACCGGCCAATAATTCGT- 5'
Explanation:
A with T, G with C
Which of the following is considered the process of budding?
A. Propagating the desired variety of shrubs or trees.
B. Growing of embryo from the egg cell without fertilization.
C. A fragment of the organism separated from the body, develops into an entire organism.
D. Pinches off the parent and grows into an individual.
Answer:
C. A fragment of the organism separated from the body, develops into an entire organism.
budding is when an organism exists [well it's born from asexual [meaning non-sexual reproduction] reproduction] by separating off from a parent organism
hope this helps!! :)
Susan makes a claim that humans do not evolve because we adapt to situations by changing our technology, not ourselves. which piece of evidence contradicts this idea? humans have been using tools for a long time. other primates also use tools. the size of our brains has increased since humans started using tools. our technology is always increasing.
The correct answer is option C.
The size of our brains has increased since we became tools users.
Researchers have proved that using modern technology gadgets not only modifies our brain functioning, but also stimulates our brain to make it more active.
Humans do not evolve because we adapt to situations by changing our technology, not ourselves.
Beneficial micro-organisms that are responsible for breaking down organic matter are called?.
why does ventricular tachycardia cause syncope
Tachycardias, or extremely rapid heartbeats, can cause syncope. Examples include supraventricular tachycardia (SVT) and ventricular tachycardia.
Tachycardia and how it causes syncope
The lower chambers (ventricles) are where ventricular tachycardia starts and it is extremely rapid. Ventricular tachycardia may not be problematic if it lasts only a few seconds. However, persistent ventricular tachycardia might drop blood pressure, which can cause syncope (fainting) or dizziness.To learn more about tachycardia and syncope, refer to-
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. What characteristics of this Royal Pedigree fit with the expectations for an X-linked, recessive disorder?
X-linked recessive disorders are typically common in males than in females as seen in the Royal pedigree.
What are X-linked recessive disorders?X-linked recessive disorders are disorders which occur as a result of a mutation in the X chromosome.
X-linked recessive disorders are typically common in males than in females.
Females can be carriers but males are always affected when the mutation is present.
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Match the following terms and definitions.
"inner skin"; layer of cells that develop on the inside of the
embryo
process in early embryonic development that forms layers of
cells
1.
2.
"middle skin"; layer of cells that develops between the
3. ectoderm and endoderm; turns into organs, muscle, and
circulatory vessels
organisms that form by spiral cleavage and develop a mouth
4. from the first indentation of the gastrula stage of embryonic
development; includes most invertebrates
5.
an animal with a false body cavity separating the mesoderm
and endoderm
6.
a characteristic of animals that have subdivisions of repeated
body parts
gastrulation
protostomes
endoderm
mesoderm
pseudocoelomate
segmentation
The answer is as follow:
Inner skin"; layer of cells that develop on the inside of theembryo process in early embryonic development that forms layers of cells is gastrulation"Middle skin"; layer of cells that develops between the endoderm Ectoderm and endoderm; turns into organs, muscle, and circulatory vessels organisms that form by spiral cleavage and develop a mouth mesoderm From the first indentation of the gastrula stage of embryonic development; includes most invertebrates protostomesAn animal with a false body cavity separating the mesoderm and endoderm pseudocoelomateA characteristic of animals that have subdivisions of repeated body parts segmentationWhat is Gastrulation?This process of embryonic tissue development is called Gastrulation. This is a phase during the embryonic development of most animals during which the single-layered blastula is reorganized into a trilaminar which is a three layered structure called the gastrula.
The layers are namely; the ectoderm, mesoderm, and endoderm. Endoderm the most internal layer forms the lining of the gut and other internal organs.
Thus, this could be the answer.
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1. Gastrulation
2. Endoderm
3. Mesoderm
4. Protosomes
5. pseudocoelomate
6. Segmentation
what type of competition is evident amongst the squirrels
Answer:
hello como esta quiero hablar con tigo
. A topographic map has a fractional scale of 1:80 000. The units are in centimeters. If two cities are 3 km apart, how far apart would they be on the map?
3km to cm = 300000 cm
300000/ 80000 = 3.75 cm
they will be 3.75 cm far on the map
1 km represents 4 cm, so 3 km will be equal to 4 × 3 = 12 cm. So, they will be 12 cm apart.
What is a topographic map?Topographic maps are precise, in-depth depictions of terrain characteristics found on the surface of the Earth.
These qualities consist of: Roads, buildings, urban development, railroads, airports, place names, geographical characteristics, administrative borders, state, and international borders, and reserves are examples of cultural items lake, river, stream, marsh, and coastal flat hydrography
Relief features include mountains, valleys, cliffs, and depressions.
vegetation: vineyards, orchards, and cleared and forested landscapes.
A map's legend (or key) provides a list of the features depicted on the map together with the accompanying symbols.
A global graticule and a coordinates grid are often displayed on topographic maps so you can identify the relative and absolute locations of depicted features.
A map is only a two- or three-dimensional depiction of the actual world at a specific time, it is vital to remember this. A map will therefore never be completely accurate.
Maps often become out of date as a consequence of changes to the environment and cultural characteristics (such as roads, plants, and buildings), albeit the pace of expiration varies depending on the region.
Therefore, they will be 12 cm apart.
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Which of the
following does NOT
protect vital organs?
Week
A. ribs
B. femur
C. skull
Answer:
femur I am pretty sure. The skull sheilds your brain, your ribs for your heart and lungs. backbone spine
Explanation:
Which of the following is the definition for speciation?
an inherited or learned trait that increases an organism's chance of survival in its environment
O the evolutionary process through which new species emerge
O a process by which organisms well suited to their environment tend to pass their traits onto offspring
O a process by which one of the extreme variations of a trait is favored
ANSWER:
I think it is the first one
Explanation:
Speciation is the process in which new species are created through evolution. I might be wrong though.
the evolutionary process through which new species emerge
Describe the structure of amino acids, and explain how their sequence in proteins affects the proteins' shapes. What are the essential amino acids (definition and a list)
Answer:
the sequence of anemia of a protein determine eyes protein shape since the chemical properties of each animal acids are force that give rise to enter mosquicular interactions to begin to create a can be success and be stands
Explanation:
your body need 20 different kinds of animal assist to fun to formation correctly this 20 enemy as his combined in different ways to make protisanum your body your body makes hundreds of anemies but it can make 9 of animal assess you need these are called entitional and acid
Binary fission occurs when ____________ growth conditions are present.
Binary fission occurs when favourable growth conditions are present.
Binary fission can is an asexual type of reproduction that involves division of the cell into two identical cells. This type of asexual reproduction occurs in bacteria.
The favourable condition that are needed for binary fission include; water, temperature.
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How would the building of underwater cities contribute to the fastest growing environmental science fields
Underwater those scientists could go out into the water and possibly find a plant that could grow superfast because of some cells it has. Well those scientists could extract those cells from that plant and put the cells in another plant. So then that plant grows Superfast.
What are the four components of environmental science?Environmental science is an interdisciplinary academic field that assimilates physical, biological and information sciences(like biology, physics, chemistry, ecology, zoology, oceanology, mineralogy, limnology, soil science, geology, atmospheric science, and geodesy). In other words, it is an objective, unbiased pursuit of knowledge about the workings of the environment and our interactions with it.
The four main components of the environment include
Lithosphere, Hydrosphere, Atmosphere and Biosphere,resembling to rocks, water, air and life respectively.
Thus, this could be the answer.
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