Since 3% of the original radioactive carbon-14 is still radioactive, the carbon-14 radioisotope has undergone five half-lives.
What is Half-Life?Half-life of a substance is the time it takes for half the original amount of the substance to decay.
Radioactive elements decay spontaneously according to their half-lives.
Since 3% of the original radioactive carbon-14 is still radioactive, the number of half-lives undergone is determined as follows:
After one Half-Life, 50% remains
After two half-lives, 25% remains
After three half-lives, 12.5% remains
After four half-lives, 6. 25% remains
After five half-lives, 3.125 % remains.
Therefore, the carbon-14 radioisotope has undergone five half-lives.
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Answer: 5 Half Life Cycles
Explanation: edg 2023
1. A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg. After collision, the two sticked and moved together with the same speed. Solve for the final speed of the combined object after collision and identify their direction.
Given,
A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg.
What is momentum?Momentum is a product of the mass of a particle and its velocity. Momentum is a vector quantity which means it has both magnitude and direction. Its formula = mass × velocity.
Solve for momentum:
M= (42,000kg)(40,000kg) / (10m/s)
M = 42,000 kilograms - 40,000 kilograms
M = 2,000kg
M = 2,000 kg ÷ 10m/s
= 200m/s
-Thus they collison at the same speed of 200m/s.
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Why is there a conflict between oil palm farming and orangutans?
Answer:
The Oil can be unsustainable to animals
Explanation:
Basically, it affects the orangutans because where that oil grows is where they live and they are currently facing extinction.
How were scientists able to identify what gene was mutated when they studied families in Finland?
The scientists employed the use of X-exome sequencing to identify rare gene mutations in the families.
What is X-exome sequencing?This involves the process of genes on chromosome X being identified through positional cloning and used ib various studies.
This was used to identify rare gene mutations in the families in Finland thereby making it the most appropriate choice.
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A scientist on a field trip in the amazon basin is observing an animal swinging from branch to branch high up in the forest canopy. she believes it belongs to the family of primates. what characteristics would she most likely expect the animal to have that would help it to survive in its environment? select three correct answers. a. the animal has a long snout to better smell its prey and webbed hands and feet for swimming. b. the animal's eyes face forward with overlapping fields of view, providing a three-dimensional view and accurate judging of distance. c. the animal has long flexible arms and a prehensile tail that help it swing from branch to branch. d. the animal has five flexible fingers and toes, and an opposable thumb and big toe, all used for grasping tree branches and food items, such as fruits, leaves, and seeds.
The primate family characterizes by having long arms they use to move, an improved visual system, 5 fingers, and prehensile capability. Options B, C and D.
What are the primates' morphological characteristics?
Primates characterize as having an elongated head that culminates in the snout.
They are pentadactyl, meaning that they have five fingers in their hands and feet. Their thumbs are opposable, providing the animal the prehensile capacity.
Their visual system tends to face both eyes to the front and see in colors, characteristics that improve their sight, as primates rely little on their smell sense and much on their sight.
They are quadrupeds with a svelte body and soft hair. Their tail is long. They move from tree to tree by making use of their extremities. They have a dental comb to clean themselves and others.
They are herbivorous frugivorous.
The three correct answers are,
b. the animal's eyes face forward with overlapping fields of view, providing a three-dimensional view and accurate judging of distance.
c. the animal has long flexible arms and a prehensile tail that help it swing from branch to branch.
d. the animal has five flexible fingers and toes, and an opposable thumb and big toe, all used for grasping tree branches and food items, such as fruits, leaves, and seeds.
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If the mass of an object increases, what also increases
Answer:
The force does too
Explanation:
From the universal law of gravitation, F ∝ m1m. Since force is directly proportional to mass, if the mass of either of the object increases, the force also increases.
does anybody here know how to edit two pictures into one?
Answer:
possibly depending on what you want
Explanation:
What are the similarities between dna and rna molecules? (4 points)
a double stranded helix, a phosphate group, and a hexose sugar
a nitrogenous base, a phosphate group, and a pentose sugar
a nitrogenous base, an amino acid, and a pentose sugar
a single stranded helix, a phosphate group, and a pentose sugar
Answer:
a nitrogenous base, an amino acid, and a pentose sugar
DNA and RNA molecules share several similarities in their structures. Both consist of a nitrogenous base, a phosphate group, and a pentose sugar. However, they differ in their helical structure, with DNA typically being double-stranded and RNA single-stranded. Thus, correct option is (B).
Ribonucleic acid and deoxyribonucleic acid are two chemicals that are crucial for genetics and other biological processes. Both of them contain pentose sugars, phosphate groups, and nitrogenous bases. Adenine (A), cytosine (C), and guanine (G) are the nitrogenous bases in both DNA and RNA; thymine (T) and uracil (U) are also present in both.
Although they both include a phosphate group and a pentose sugar (deoxyribose in DNA and ribose in RNA), the structural configurations of DNA and RNA are different. The two strands of DNA are typically kept together by base pairing to create a double helix. The majority of RNA, on the other hand, is single-stranded. Their functions and cellular processes are different as a result of this structural heterogeneity.
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Which of the following best describes an example of a community experiencing secondary succession? View Available Hint(s)for Part A This community is located within the rubble recently left by a retreating glacier. This community is on an exposed rock and consists of lichens and mosses that are the primary photosynthesizers in this system. This community consists of pioneer plant species that are altering soil properties. This community of grasses began growing after a fire killed the trees and shrubs previously at this site.
The option that best describes a community experiencing secondary succession is : ( D )This community of grasses began growing after a fire killed the trees and shrubs previously at this site
What is secondary succession ?Secondary succession is the recolonization of a habitat by living organisms such as plants and animals after the habitat had experienced a major disaster such as flood or massive fire. Because The pioneer plants and animals might have been displaced or destroyed during the major disaster.
Hence we can conclude that The option that best describes a community experiencing secondary succession is This community of grasses began growing after a fire killed the trees and shrubs previously at this site.
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Environments include both _____ and _____ things.
Question 1 options:
resources; factors
air; water
living; nonliving
buildings; animals
A trait has two alleles represented by p and q. If p=0.22 what is q
Answer:
0.78
Explanation:
By using the Hardy-Weinberg equation.
Which choice best describes how DNA fingerprinting has improved the identification of organisms?
A.Scientists can identify which genes are connected to specific adaptations.
B.DNA sequences are unique for each species and can be directly compared.
C. Most organisms share the vast majority of their DNA.
D.An organism's DNA is constantly changing.
.
What is biological evolution?
A change in the properties of groups of organisims over many generations.
Answer:
Biological evolution is the change in inherited traits over successive generations in populations of organisms
Which are characteristics of bryophytes? (Select all that apply.)
□ Most of them grow tall.
□ Most of them are vascular plants.
□ Most of them live in shady, moist, or humid areas.
□ Most of them need water to help reproduce.
Answer:
Explanation:
there u go
What causes the day/night cycle of Earth?
Earth's spinning in space
The sun's rotation around Earth
The moon's rotation around Earth
Earth's orbit around the sun
Earth's orbit around the sun
Explanation:
The definition of an orbit is a circular shape, the rotation of one full circle or a range of experience. The 365 days it takes the earth to get around the sun is an example of the time it takes for a complete orbit or full circle around.
Which process created the gases of earth’s first atmosphere?
volcanic activity
photosynthesis
weathering
photolysis
What happens to the shape of a wave when on a string when you increase the frequency
Answer:The wavelength decreases
Explanation:
because im a god
Please help.
There is a species of frog on an island that puzzles scientists. The proportion of frogs with no stripes is greater than the proportion of frogs with stripes. This is puzzling because the unstriped trait is recessive (s), and the striped patterns are due to dominant alleles (S). Also, natural selection seems to support the striped trait.
How do genetic factors most likely account for the proportion of traits in the frog population?
A. Most of the striped frogs and unstriped frogs have the genotype ss.
B. Most of the striped frogs have the genotype SS and the unstriped frogs have the genotype ss.
C. Most of the striped frogs have the genotype SS and the unstriped frogs have the genotype Ss.
D. Most of the striped frogs have the genotype Ss and the unstriped frogs have the genotype ss.
Average soil contains about what
percentage of mineral deposits?
A. 5%
B. 45%
C. 90%
Answer: It would be B. 45%
difference between accomodation and pupil reflex?
Answer:
The pupillary light reflex compensates for changes in illumination level, whereas the accommodation responses compensate for changes in eye-to-object-viewed distance.
Explanation:
Hope this helped!
In the human life cycle
What's the rest of the question so I can answer it
Explanation:
hurry and type the rest out pls
What do our body get from processing and digesting food?
Answer:
Proteins, fats, carbohydrates, vitamins link, minerals link, and water
Explanation:
They are nutrients in which everyone needs, your digestive system breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair.
Answer:
Explanation:
nuitrent and fat
a group of dead organism gets covered by mud. over long periods, they become fossil fuels. which statement correctly describes how carbon moves in this scenario?
carbon moves from the atmosphere to the geosphere.
carbon moves from the atmosphere to the hydrosphere.
carbon moves from the biosphere to the geosphere.
carbon moves from the biosphere to the hydrosphere.
Carbon moves from the biosphere to the geosphere is the correct statement.
How carbon moves in this scenario?
Carbon moves from the biosphere to the geosphere because the dead organism has carbon in its body and when it is decomposed the carbon goes into the soil.
So we can conclude that carbon moves from the biosphere to the geosphere is the correct statement.
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why do veins have large lumens
state five qualities of good draught animals. State four precautions to be observed when using draught animals
Answer:
1. Conformation
Conformation refers to the form or shape of an animal. An animal with good conformation has a shape which shows the normal characteristics of its species and breed.
An animal used for draft must have a build well suited for pulling. It should be low to the ground, have powerful shoulders and legs, and have a broad frontal dimension that will accommodate the placement of a harness. It must be big enough to deliver, alone or in a pair, the power needed to pull equipment for an extended period of time. It must also be able to exert the concentrated or "instantaneous" effort needed to overcome temporary increases in the draft requirement caused by roots, rocks, hard soil, or inclines.
While some animals are bred to produce good draft abilities, within any breed individual animals vary greatly in these qualities, and care must be taken to choose those with the most potential. A thin but well-balanced animal can be strengthened with a good diet, health care, and work. However, an animal with a swayback, bad legs or impaired vision will be a constant source of trouble.
Selection is a process of matching ideal qualities against those seen or latent in a given animal. Good draft animals, regardless of species or breed, will have the following qualities:
• head well proportioned; squarish, sculptured look
• balanced vision and hearing; head carriage high and straight
• normal mouth; good teeth and jaw structure
• body should have depth and width; short, full neck, full shoulders, broad chest, and straight, broad beck
• wide, thick hindquarters, lowset and evenly-fleshed
• short legs, straight and square to the body; ample bone
• clean, well-developed joints; no swelling or unusual boniness; no turning in or out of knees or hoofs; free movement of limbs
• feet straight, hard; normal angulation of hoof.
Temperament
Temperament refers to the nature or disposition of an animal. Part of its temperament is determined genetically, both by breed and parentage; some of it is learned-a response to the treatment it receives from other animals or the people who raise and handle it.
Temperament is reflected in an animal's behavior, the way it moves and acts, and the way it reacts to the things around it. It is difficult to know much about temperament from the quick evaluation that usually precedes the purchase of a draft animal. The buyer must guess, from what is observable, whether or not an animal will accept new routines or maintenance and training, behave well in a pair, and prove to be a spirited yet steady-paced and manageable worker. Sometimes, what is observable is not typical of the animal's behavior. A basically lethargic bull, for example, may become very alert or nervous at the approach of a stranger, exhibiting a fierceness that could be misinterpreted as a strong yet controllable spirit. A donkey that is mishandled and mismanaged might kick or butt at its owner, or at any adult, but be led away quite easily by a child. The buyer must be aware of such possibilities and at the same time drew some basic conclusions about the animal's temperament.
The following are signs of good temperament:
• Good overall conformation and health. The animal has no physical handicaps that require it to compensate with aggressive or stubborn behavior. An animal with bad vision or hearing, an unsound leg or joint, or with a chronic respiratory or muscular weakness, protects itself by balking, spooking, shying, refusing to be harnessed or lying down during work. Its temperament is affected or shaped by its physical condition.
• The animal accepts the handling of the owner. The owner can pick up the animal's foot, open its mouth, lead it with a rope without having to use force or harsh measures.
• It does not shy or kick at other animals. The buyer should try to be present when it is being turned out with a herd or put into a corral with other animals. If an animal is unusually aggressive or cowardly, it may not work well in a pair. Aggressive animals force their work-mates to shy or lean out of the yoke or harness, while cowardly animals may refuse to step evenly with their mates, lagging behind.
When an animal is taken from its herd or original owner and staked out or corralled in a new place, it may experience shock. The animal may show signs of aggression, withdrawal, stubbornness, fear, or general anxiety. None of these reactions is unnatural during the adjustment period, and should not be taken as a sign of an unsuitable disposition. An animal's character becomes clear later, during training and preseason work. At that time the farmer can judge the ability of the animal to work as part of a pair or team. Buying an animal early in the offseason allows the owner time to seek a replacement should a problem arise.
what is it light and how does it travel?
Answer:
Light is both waves and particles, which are described as packets of energy called photons. These waves, or photons, travel in narrow beams called rays. Only when light rays move from one medium to another, such as from air to water, their linear paths altered.
Explanation:
Hope this helps:) Goodluck!
Answer:
is a transactional reflection from a shiny object that travels through carbon monoxide
Can someone help me fill in this chart please?
Monomer
-Carbs : monosaccharide
-Lipids: glycerol & fatty acids
-Protiens: amino acids
-Nucleic Acid: nucleotide
Polymer
-Carbs: polysaccharide
-Lipids: same as monomer
-Proteins: protein/polypeptide chain
-Nucleic Acid: nucleic acid (DNA)
CHONP
-Carbs: CHO
-Lipids: CHO
-Protiens: CHON
-Nucleic Acid: CHONP
Function/Purpose
- Carbs: body's primary source of energy
-Lipids: energy source (long term), cell membranes, hormones
-Protiens: needed for growth and restoration
-Nucleic Acid: Genetic information storage and protein synthesis
Examples
- Carbs: starches, cellulose
- Lipids: oil, wax, fat
- Protein: muscle, hair, nails, enzymes
- Nucleic Acids: DNA, RNA
during the day what do plants prouduce
Answer:
Oxygen is the CORRECT ANSWER
Explanation:
They produce oxygen by photosynthesis they take in carbon dioxide and make oxygen.
compare light and electron microscope
See the attached file!!!!
What is the connection between genetics and natural selection?.
An enzyme controlled reaction was carries out at 36°C. After 3 minutes, 240 cm' of product had been
produced. Calculate the rate of reaction is cm/s