The egg example that Czerski uses to explain the law of conservation of angular momentum is that according to the principle of conservation of angular momentum, anything that is spinning will keep spinning until it is stopped.
Similarly, in the example of an egg given by Czerski If you spin a raw egg and then try to stop it by placing your finger on the shell, the egg will continue to spin since the uncooked portion of it is still in motion.
The law of conservation of angular momentum states that an object's angular momentum won't change in the absence of any external tension.
Its angular momentum is conserved as long as there is no net external torque acting on the system.
In forensic science, reconstruction of crime scenes is a crucial application of physics because instances involving accidents, body falls from heights, weapon projectile motion, bullet or tool case analysis, glass penetration of quick stone.
And law of conservation of angular momentum plays a great role in the reconstruction of those crime scenes and also in the firearm identification.
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Does the overall shape of lucy’s pelvis resemble the human pelvis or the chimpanzee pelvis more? do not think of the size, but compare the outlines of each bone
In human pelvis the wings of the ilium extended from either side of the pelvis , in chimpanzee pelvis the wings are extend from the back because chimpanzee is tall.
Lucy and other species could walk well because their hip and knee joints were similar to humans." like human's,like chimp's".Her small skull with long arms and conical rib cage are like an ape's but she has a more human for example- spine, pelvis and knee due to walking upright.
According to Johnson - Lucy was either a small member of genus homo or small Australopithecus. When comparing Lucy , its shows an intermediate curvature between those of modern human and chimpanzees.
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Which subatomic particles are most important in the transfer of energy in living organisms?
Question:
Which subatomic particles are most important in the transfer of energy in living organisms?
Answer:
Electrons.
Extra Information:
An electron is an elementary particle having a charge of -1. It orbits the nucleus of atoms in shells (I.e., the K, L, M, N, O, P, etc.)
Study the effect of fertilizer on tomato plants containing same amount of soils. different watering solutions. varying amounts of fertilizer. what is dependent variable
The growth of the tomato plant is a dependent variable.
What is a dependent variable?A dependent variable is a variable whose value depends on other parameters and which is experimentally tested.
In this case, the effect of fertilizer on the growth of the tomato plant is tested. The plants are grown under the same amount of soil, but they have different watering solutions and different amounts of varying fertilizers. This will ultimately affect the growth of the tomato plant. Plants with a good watering system and good fertilizers will grow better as compared to those who will not get a good watering system and fertilizers.
Hence, the growth of the tomato plant is dependent on all other variables.
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What is the relationship (embryological, functional) between your lungs and the "gas bladder" of a perch?
"Gas bladders" and lungs are similar organs, although they serve different functions.
Both of them develop from a location in the upper throat i.e. the pharynx and are used to manipulate gases. They both contain a good blood supply.
However, the lung is used for breathing and is often found in land vertebrates, while on the other hand, the gas or swim bladder is used in the regulation of buoyancy and the latter is found in all other bony fishes e.g. perch.
Perch use the swim bladder to control their buoyancy by filling it with oxygen from their gills using a gland, which is known as a gas gland. This expands the bladder, thereby pushing the fish toward the surface of the water.
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Plasma contains more sodium than chloride. How can this be if individual ions of sodium and chloride exactly balance each other out, and plasma is electrically neutral?.
In addition to chloride, there are other negatively charged molecules in plasma. The extra sodium restores the balance of the overall negative charges.
What is plasma?It is an aqueous solution that is thick in consistency, straw-colored, and somewhat alkaline. Fifty five percent of the blood is formed by it.
It is made up of a variety of organic and inorganic components, including 90–92% water and 6–8% solutes.
It includes fibrinogen, globulins, albumins, a trace quantity of sodium, calcium, magnesium, chloride, bicarbonate, glucose, amino acids, lipids, and other coagulation-related substances.
Plasma's primary function is to transport proteins, hormones, and nutrients to the body's many organs. Additionally, plasma is where cells dump their waste. The plasma then aids in the body's elimination of this waste. All components of the blood are also transported through your circulatory system by blood plasma.
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What change would increase the rate of oxygen diffusing from lung alveoli into the blood?
An increase in the hemoglobin concentration of the red blood cells would increase the rate of oxygen diffusing from lung alveoli into the blood.
The capillaries (small blood vessels) lining the alveolar walls allow oxygen to diffuse from the alveoli to the blood throughout this process.
Hemoglobin in red blood cells absorbs oxygen as it enters the bloodstream.
Then, as the blood returns to the heart, the heart sends the oxygen-rich blood through the arteries to the body's tissues.
The alveoli are where blood is infused with oxygen (air sacs).
Small blood arteries called capillaries are located quite close to the alveoli.
Oxygen and carbon dioxide travel along the concentration gradient due to the alveolar and capillary walls' extreme thinness.
This motion is referred to as diffusion and an increase in the hemoglobin concentration of the red blood cells would increase the rate of oxygen diffusing from lung alveoli into the blood.
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How are the line spectra of the different elements related to the observed color with the unaided eye?
Line spectra of different elements vary due to difference in wavelengths of emitted light.
To the unaided eye, the various wavelengths denoting colors of light given by an element are combined together, and appear as a single color that is a combination of the constituent colors.
Electrons in atoms usually occupy the lowest energy states possible (ground state). However, electrons can be excited to high energy states when they absorb excess energy.
When they return to the ground state, they release this excess energy in the form of light. Each atom or molecule releases a single photon of light for each electron energy transition it makes.
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The interior of a neuron is more negative than the outside due to the presence in the interior of?
The interior of the neuron is negative than the outside due to the presence of protein and chloride ions.
In contrast to the positive charge in an extracellular matrix, neurons actually have a strong negative charge inside them. This is due to the abundant accumulation of anions (negatively charged ions).
These anions are large molecules which cannot leave through any channel. So, they simply stay put and give the cell a negative charge inside.
The commonly present anion is chloride ion which keeps the neuron resting membrane potential in -70mV. If the neuron needs to conduct electrical impulse, neuron will then reach +40mV action potential by opening many cation channels (for example, Na/k channel).
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The interior of the neuron is negative than the outside due to the presence of protein and chloride ions.
Why is a neuron charged even at resting state?At rest, a neuron is negatively charged. A typical neuron has -70 mV charge on it, i.e., it is 70 mV more negative on inside than outside.In a resting neuron, there is more K+ on the inside the cell than outside and more Na+ on the outside than inside.For each potassium ion present, there is an organic anion to balance it.Therefore organic anions like those of amino acids and proteins are in higher concentrations on the inside of cell than outside.Also the membranes are leaky for K+ as it can pass with the help of K+ channels causing positive charge to move outside the cell. However, the organic anions cannot move out resulting in more negative charge inside the cell.Learn more about neurons here:
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Which gland in the endocrine system primarily controls the body's response to a stressful situation? pituitary adrenal thyroid pineal
Answer: There are 2 correct answers for this question: adrenal and pituitary. However, I believe the answer you're looking for is the adrenal gland since it is more directly involved in the production of epinephrine.
Answer:
adrenal
explanation: got it right on edge
Which lung volumes can be added together to calculate the functional residual capacity?.
The Functional Residual Capacity comprises of Expiratory Reserve Volume plus Residual volume.
What are lung volumes and capacities?Depending on what they do, various animals have varying lung capacities. For instance, cheetahs have substantially larger lungs than humans do. This is due to the fact that their muscles, which enable them to run quickly, need a lot of oxygen. Due to their huge bodies, elephants have bigger lung capacities.
A human lung has a six-liter capacity maximum. A spirometer can be used to measure the amount of air that is used during respiration. It is a piece of equipment used to measure the total amount of air that the lungs inhale and exhale. Additionally, it is utilized to evaluate pulmonary function.
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Q.) Write a scientific article to describe the effects of gadgets on human eyes
Answer:
yes gadgets effects on humans eye because the radiation come from gadgets like mobile , computer, etc negatively effect our eyesight because of the radiation so we should not sit more and more time Infront of the gadgets like mobile, computer, television,etc. To prevent our eyesight or eye from radiation.
Which data would not affect maximum likelihood estimates of phylogenies when comparing different tree hypotheses?.
The set of species derived from one common ancestor.
To build phylogenetic trees, a variety of data can be employed, including genetic information, mitochondrial DNA sequences, ribosomal RNA genes, and any relevant genes, as well as morphological information such as structural characteristics, organ kinds, and specific skeletal arrangements
What is a Phylogenetic tree ?A phylogenetic tree, also called a phylogeny, is a diagram that shows the evolutionary branches from which various species, creatures, or genes have descended from one another.
A phylogenetic tree can be used to track a species' evolutionary history back via the tree's branches and find their common ancestors along the way. A lineage may preserve some of its ancestors' characteristics over time, but it will also change over time to accommodate the environment.Learn more about Phylogenetic tree here:
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Hich chromosome demonstrates a partial or full gene loci deletion in various forms of beta thalassemia?
Beta thalassemia is caused by point mutations and sometimes deletions in the beta-globin gene of the 11th chromosome.
What is Beta thalassemia?This is a type of blood disorder which is inherited from the parents resulting in reduced synthesis of haemoglobin in the body reducing the oxygen-carrying capacity of the blood.
Beta thalassemia is of two types. First is Beta thalassemia major; it is a severe form of this disorder and people suffering from this condition require blood transfusions very frequently. The second is Beta thalassemia minor which has only a few or no symptoms.
Beta thalassemia cannot be treated by iron supplements as lack of iron is not the cause of this disorder. It is a genetic disorder which is managed by folic acid supplements and regular blood transfusions.
Therefore, chromosome 11 demonstrates a partial or full gene loci deletion in various forms of Beta-thalassemia.
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The half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only % of the carbon-14 expected in living matter, when did the tree die?.
The tree will die after 3480 years
Given: half-life of carbon-14 = 5600 years
percentage of carbon = 65%
To Find: when did the tree die
Solution:
T = half-life = 5600 years
I suppose you want the age of the charcoal in years.If 65% of the carbon 14 remains, then the amount left is 0.65 times the initial amount A0.
0.65A0 = A0(1/2)^t/T
0.65 = (0.5)^t/5600
ln(0.65) = (t/5600) ln(0.5)
t = 5600 ln(0.65) / ln(0.5) ≅ 3480 years
So, the tree will die after 3480 years
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Which proteins can activate free nerve endings, such as itch receptors and nociceptors?
Kinins, antigens, histamines, potassium ions, prostaglandins can activate free nerve endings. Thus, option A, B, C, D, E are correct.
What is nociceptors ?
A specialized receptor in some first order neurons activated through various noxious stimuli known as nociceptors.
These receptors are unencapsulated cutaneous receptors as It is located at the free nerve endings of the primary afferent neuron.
It can be seen in the skin, muscle, joints, bone, and some brain parts.
There are different types of nociceptors such as mechanical, Chemical, Thermal, mechano-thermal nociceptors and Polymodal nociceptors.
Hence, option A,B,C,D and E are correct.
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Your question was incomplete. The probable question was
Which proteins can activate free nerve endings, such as itch receptors and nociceptors? Select all that apply.
Select one or more:
acetylcholine
histamines
prostaglandins
kinins
glucose
potassium ions
antigens
When iron-deficiency anemia is present, aerobic capacity declines and subsequently increases with iron supplementation.
a. true
b. false
What process creates daughter cells with a mixture of paternal and maternal chromosomes?
which of the following statements about cpr is not true
A.immediate compression only cpr
Prior to darwin, ideas about how organisms came into being were mostly based on ________.
Prior to Darwin, ideas about how organisms came into being were mostly based on Religious beliefs.
Before Darwin, people used to strongly believe that the Bible clearly explained about the origin of all living forms. They were very much convinced by the idea that there was a natural order to things made by God.
However, later when fossils were thoroughly studied around Darwin's time, he used the fossil records to substantiate his theory of evolution. Moreover, Geology also became more predominant as a Science during the same time which influenced Darwin's thoughts about the Earth's surface and how it could change over a period of time.
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Need help asap. Picture below to see what I need help with
When a BB male and a Bb female are crossed, 50% BB and 50% Bb genotypes are produced and a 100% black phenotype.
The entire number of genes that an organism receives from its parents makes up its genotype. Alleles, which are pairs of these genes, are found. One gene is dominant and one gene is recessive in each allele.
The dominant gene is always expressed in a cross if it is present. Only when a pair of alleles is made up of two recessive genes does the recessive gene express itself. In this instance, the white fur is subordinate to the black fur. White fur is represented as b, while black fur is represented as B.
We can see that when we cross the BB male and Bb female, we will get a genotype that is 50% BB and 50% Bb, as well as a phenotype that is 100% black fur.
Parents: BB x Bb
Gametes: B, B, and B, b
Offspring: BB, BB, Bb, Bb
The genotypic ratio = 1:1
The phenotypic ratio = 1:0
Genotype probabilities:
P(BB) = 2/4 = 0.5 or 50%
P(Bb) = 2/4 = 0.5 or 50%
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Which of the following is a NATURAL
(NOT human-made)
greenhouse gases?
source of
A. burning fossil fuels in power plants
B. human agricultural practices
C. volcanic eruptions
D. anthropogenic (human-caused) deforestation
Answer:
Burning fossil fuels in power plants
Explanation:
Hope it helps
pls mark brainliest answer
Answer:
c
Explanation:
because volcanoes happen naturally humans and they release greenhouse gases in the atmosphere such as carbon dioxide and nitrogen :)
hope this helped !
When 15n-labeled aspartate is fed to animals, the 15n-label rapidly appears in many amino acids. What reactions are occurring to allow this to happen?
Aspartate + a- keto acid >> Oxaloacetate + a amino acid
This reaction is occur because the a- keto acid in the equation can come from any amino acid, the 15 N from aspartate is rapidly transferred to other amino acids.
15N is symbol use as the isotope of nitrogen with mass number 15. comprises of 0.4 % of stable nitrogen found, so the relative abundance of each in amino acid is simply a reflection of how much is found in nature in general.
This isotopes is enrichment of the labelled amino acids was determined following a previously developed procedure comprising by determination of the spectral purity of the selected natural abundance amino acids.
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In a hardy-weinberg population, 16% of individuals display the homozygous recessive phenotype. What proportion of the population will be heterozygous carriers of the recessive allele?.
The proportion of the population will be heterozygous carriers of the recessive allele is 0.48.
What is Hardy-Weinberg principle?
Hardy-Weinberg principle says that the allele frequencies in a population are stable and is constant from generation to generation. The gene pool (total genes and their alleles in a population) remains a constant. This is called genetic equilibrium. Sum total of all the allelic frequencies is 1.Individual frequencies, for example, can be named p, q, etc. In a diploid, p and q represent the frequency of allele A and allele a.The frequency of AA individuals in a population is simply p². This is simply stated in other ways, i.e., the probability that an allele A with a frequency of p appear on both the chromosomes of a diploid individual is simply the product of the probabilities, i.e., p².Similarly. that of aa is q² and of Aa 2pq.Hence, p²+2pq+q²=1, is a binomial expansion of (p+q)².By given data;
[tex]q2=16[/tex]
[tex]q2=\frac{16}{100}=0.16[/tex]
[tex]q=0.4[/tex]
[tex]p=1-0.4=0.6[/tex]
[tex]2pq=2(0.6)(0.4)=0.48\\[/tex]
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When a urine sample reaches the laboratory, what is the first technique used to determine if a urinary tract infection exists?
When a urine sample reaches the laboratory, the first technique which is used to determine if a urinary tract infection exists is "Sample is observed microscopically".
What is urinary tract infection?An infection in your kidneys, ureters, bladder, or urethra is known as urinary tract infection (UTI). Most infections affect the bladder and urethra, which are parts of the lower urinary system.
Although signs and symptoms of urinary tract infections are not always present, when they are, they may include:
an intense, constant urge to urinatean uncomfortable burning when urinatingurinating frequently and in tiny amountscloudy-looking urineA indication of the presence of blood is crimson, bright pink, or coke-colored pee.urine that smells stronglyWomen who experience pelvic pain typically experience it in the centre of a pelvis and near the pubic bone.When germs enter in urinary tract through urethra and start to grow in the bladder, urinary tract infections commonly result. Even though the urine system is built to keep off such tiny invaders, these safeguards can go wrong.
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When an enzyme's activity is inactivated by heat or a change in pH, the enzyme is said to be When an enzyme's activity is inactivated by heat or a change in pH, the enzyme is said to be
Answer:
denatured
Explanation:
I hope this help
If a radioactive isotope undergoes beta decay, the daughter isotope that is produced has an atomic number that:_____.
If a radioactive isotope undergoes beta decay, the daughter isotope that is produced has an atomic number that is increased by one.
Beta decay is the radioactive disintegration results in a change of one positive charge without any change in the mass number of the atomic nuclei.
An unstable nucleus produces an energetic electron and an antineutrino during electron emission, which is also known as negative beta decay, and a neutron inside the nucleus changes into a proton inside the product nucleus. As a result, negative beta decay produces a daughter nucleus whose mass number is the same but whose atomic number is one higher than that of its parent.
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The prostate, seminal glands, and bulbo-urethral glands produce __________, the liquid medium in which sperm leaves the body.
When an individual is promised a positive outcome for submission to sexual advances, or threatened with a negative outcome for failure to submit to sexual activities, this is referred to as:__________
When an individual is promised a positive outcome for submission to sexual advances, or threatened with a negative outcome for failure to submit to sexual activities, this is referred to as: "Quid Pro Quo harassment."
What is Quid Pro Quo harassment?Quid pro quo is considered a kind of sexual harassment per Title IX for sex discrimination purposes. Quid pro quo harassment occurs when a subordinate experiences a real negative consequence for refusing to comply with a superior's sexual requests.
If an employee desires to hold the employer liable for workplace quid pro quo sexual misconduct, they must be able to demonstrate certain requirements. And although each case is unique, the following factors are typically necessary to establish quid pro quo harassment:
Employees must demonstrate that they belong to a protected class, which in this context means simply that federal law, namely Title VII, protects them and other employees against workplace discrimination as a result of sex.Unwanted sexual advances were made against the employee by another worker, usually a supervisor or corporate officer.The harasser's motivation for the harassment was sexual.Aspects of the employee's career, such as pay or a promotion or demotion, were negatively impacted as a result of their response to the sexual advances.To know more about example of quid pro quo sexual harassment, here
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The primary oocytes in primordial follicles remain arrested in ______ until after puberty.
The primary oocytes in primordial follicles remain arrested in prophase I of first meiosis in ovary until after puberty. Thus, option D is correct.
What do you mean by oocyte ?Oocytes are the first developing egg cells produced by ancestral oogonia cells of ovary during fetal development.
Oogonia undergo mitosis and produce diploid chromosome containing daughter cells and these oogonia become oocytes.
Oocytes remain dormant until puberty, as it is arrested at early stage of first meiosis as a primary oocyte or primordial follicle.
The average time duration of the conversion of the primordial follicle containing an oocyte to a preovulatory follicle is about 120 days.
Hence option D is correct.
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Your question was incorrect. So the probable question was
The primary oocyte in primordial follicles remain arrested in _____ until after puberty.
A. anaphase I
B. anaphase II
C. prophae II
D. prophase I
If a member of your family suddenly develops chronic hoarseness and seems to have difficulty swallowing along with recurring stomach aches, this could be an issue with which cranial nerve?
