Without more specific information, it's impossible to determine the skateboarder's speed at point B. However, in an ideal physics situation with no external forces (like air resistance), the skateboarder's speed would remain constant at 1.8 m/s.
Explanation:The problem doesn't provide enough specific information needed to definitively determine the skateboarder's speed at point B. From the given information, we know that the speed of the skateboarder at point A is 1.8 m/s and friction is negligible. But without additional information such as whether the points A and B are at different heights (which would involve potential and kinetic energy changes), or whether some external force acts on the skateboarder between these points, it's impossible to determine the speed at point B.
However, in ideal physics situation where friction, air resistance and other forces are negligible, we can say that, the speed of the skateboarder at point B would remain constant i.e., 1.8 m/s - because in an ideal physics world, without any external forces, an object in motion stays in motion at the same speed and in a straight line.
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Which three statements about dialysis are true?
A-It’s a time-consuming procedure.
B-It requires the patient to be on antirejection medication.
C-It uses a machine to purify blood.
D-It’s a temporary remedy for renal failure.
E-It requires matching the patient’s blood with that of the donor.
Dialysis can be defined as the treatment to maintain the chemical levels in the body salt. Dialysis removes the extra water, salt and waste from the bodies of the patients whose kidneys are unable to perform their function properly. The dialysis is a temporary solution for the renal failure before a transplantation is done. The process of dialysis is time-consuming as it takes several hours to completely purify the blood.
Hence, the correct statements about dialysis are 'A, C, D'.
Which equation represents "Eight less than five times a number equals twenty-two"? A) 5x - 8 = 22 B) 5x + 8 = 22 C) 8 - 5x = 22 D) 8 + 5x = 22
Answer: Its A
Explanation:
I don't know why but i had the assessment and guessed and it was right
When caring for an individual with anorexia nervosa, the most important nursing intervention is to:?
The nurse should give proper nutrition to the patient. She should provide intervention. Normalizing the eating and exercise habits.
What is anorexia nervosa?Anorexia is an eating disorder in which you feel compelled to maintain a low weight.
Anorexia causes you to believe you're obese when you're actually healthy or underweight, as well as eating very little or missing meals.
Talking therapies, like as cognitive behavioral therapy, are commonly used to treat anorexia (CBT).
Thus, The nurse should ensure that the patient is properly nourished. She should step in and help. Creating a routine for eating and exercising.
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Which statement is NOT true? A) Chicken pox is a lytic virus when it is causing sores. B) Chicken pox is a lysogenic virus when it is hiding in the person's DNA. C) Antibiotics could cure chicken pox sooner than 7 days, since it is a virus. D) The immune system of a person gets chicken pox under control in about 7
Answer:
C) Antibiotics could cure chicken pox sooner than 7 days, since it is a virus.
Explanation:
Antibiotics can only be used to treat bacterial diseases.
Chicken pox is one of the most common childhood diseases. Caused by a virus (which explains why it cannot be treated with antibiotics), it can be highly contagious for those who have never had it before or those who have not received the vaccine. However, once exposed to the disease, the person is immune for the rest of his life.
Chicken pox is mainly characterized by the appearance of red blisters on the skin, scattered throughout the body, which cause itching and other symptoms.
For daily water consumption, many experts recommend drinking ____________ of your body weight in ounces.
Plant cells have two energy-related organelles. ________________ harness light energy to create sugars and ________________ break down these sugars to create atp.
According to friedrich, when food and fluid intake is poor, starvation occurs before dehydration
The statement of Liz Friedrich is verified by evidence from research of a physiologic adaptation, during the vanishing development, the famine that averts any uneasiness as a outcome of the absence of food. Dehydration may result to hemoconcentration and hyperosmolality, with consequent azotemia, hypernatremia, and hypercalcemia. These metabolic fluctuations may create a soothing effect on the brain before passing away.
When compared to generation x, members of generation y are most likely to influence?
What are the two recognized means of preventing injury during electrical equipment operation?
List the major subdivisions for each of the four types of carbon or organic compounds within living organisms.
A box of books has lessequalmore inertia than a box of cotton balls.
Answer:
True.
Explanation:
For Newton, the Law of Inertia establishes the acceleration resistance offered by matter. Being inertia the property that a body has to remain at rest or in uniform rectilinear motion (MRU). This law also says that the greater the mass of matter, the greater its tendency to inertia. That is, the heavier the more likely it is to remain motionless or in the same motion.
Since a book box is heavier than a cotton box, we can say that a book box has more inertia than a box of cotton balls.
blank occurs when external vibration match an objects natural frequency.
Jessica is extremely thin but complains she is fat, so she exercises obsessively to avoid weight gain. jessica may be suffering from
Jessica may be suffering from anorexia nervosa. This is a type of eating disorder in which the person or individual who has this disorder likely wants to lose weight because of his or her outlook of being fat—she or he would do whatever it takes to lose weight even if the person starves.
Answer:
anorexia
Explanation:
You place a drop of a solution on red litmus paper. No color change occurs. What do you conclude?
The strategy for bioremediation of large sites contaminated by inorganic pollutants like toxic metals and radionuclides is usually to __________.
The answer in the space provided is contains the pollutants in a process of having to convert it with less mobile form as this is the strategy used that is helpful for bioremediation in terms of large sites in which is contaminated with the inorganic pollutants.
Areas of land covered with water for at least part of the year are called
Why must the astrolabe be lined up with north?
to measure altitude
to measure azimuth
to locate Polaris
to level the instrument
The process that removes metabolic waste products from an organism is known as
The process that removes metabolic waste from an organism is called excretion. In humans, the kidneys play a crucial role in this process while other organisms have their unique systems like vacuoles, flame cells, and Malpighian tubules. These systems essentially maintain a balanced internal environment by expelling metabolic waste, such as ammonia, urea and uric acid.
Explanation:The process that removes metabolic waste products from an organism is known as excretion. The human body has a complex system, which primarily involves the kidneys, to filter waste from the bloodstream and excrete it in the form of urine. On the other hand, succinct organisms and invertebrates utilize more simplistic systems, such as vacuoles, flame cells, and Malpighian tubules.
Microorganisms use contractile vacuoles, while flame cells and nephridia are used by worms for waste excretion and osmotic balance. Insects have evolved Malpighian tubules for the same purpose. These systems remove metabolic wastes and other substances from the body, maintaining a balanced internal environment.
The waste product of the metabolism of nitrogen-containing compounds, such as proteins and nucleic acids, is ammonia. Aquatic animals easily excrete ammonia into their surroundings, but terrestrial animals have evolved special mechanisms for removing this toxin. For vertebrate animals, urea is the primary byproduct of ammonia metabolism, while birds, terrestrial arthropods, and reptiles primarily produce uric acid.
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While performing photosynthesis during the day, the chloroplasts of a green leaf produce:?
What is the main component of the thin filaments in muscle fibers and is responsible for muscle contraction?
Answer:
Actin Protein
Explanation:
Protein named “Actin” is the main component of thin filament in muscles. There are some other proteins such as troponin and tropomyosin that forms the thin filament. However, actin plays an important role in the contraction of muscles as each actin molecule consists of single myosin binding site. All actin molecules join together to form a chain twisted into helix configuration which is very essential for the contraction mechanism in muscles.
egg laying land animals have evolved to produce eggs with tough shells to ensure that
Answer:
To ensure that no drying of the embryo occurred.
Explanation:
Because of the inhospitable environment, eggs from terrestrial animals that had a thinner shell were very susceptible to desiccation of the embryo. This made it difficult for the species to continue because it caused the embryo to die and did not allow a new being to be generated.
Over time, as a way of overcoming this disadvantage, some of the land animals had evolved to make thick-shelled eggs. The egg of these animals has a thick shell that prevented the drying of the embryo. However, the shell was porous, allowing gas exchange between the embryo and the external environment, thus ensuring the survival of the species.
Destruction of which pancreatic cells would cause hyperglycemia? alpha cells beta cells delta cells none of the choices are correct.
The wong choices can be defined as follows:
They also secrete glucagon, which releases glucose from its liver and fatty acids from its adipose tissue from the alpha cells.Somatostatin was produced by the delta cells and is an inhibitor of several bodily functions includes hormone release.Therefore the "Beta cells" is the correct choice.
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Explain why atmospheric concentrations of carbon dioxide are expected to increase in the future.
The atmospheric concentrations of carbon dioxide are expected to increase in the future because of increasing numbers of vehicles as well as industrial area.
How automobiles and industries affect the atmospheric concentrations of carbon dioxide ?All the industries, automobiles and other sources of carbon , releases large amount of carbon dioxide which further accumulate to increases the concentration of CO2 in the atmosphere.
Enhanced carbon concentration in the atmosphere restricts the escape of heat from the earth (Green house effect) thereby increasing the temperature of earth. Thus, first the carbon dioxides is released, then its concentration increases and lastly the global temperature rises.
Thus, increasing numbers of vehicles as well as of industrial area is the main concern.
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________ is the five-carbon sugar found in DNA.
Answer:
Deoxyribose is the five -carbon sugar found in DNA.
Explanation:
The molecule of DNA is composed of nucleotides. The nucleotides are units composed by a phosphate group, a nitrogenous base and a molecule of the carbohydrate deoxyribose.
The deoxyribose is a pentose sugar. Four carbon atoms and a single atom of oxygen form a five membered ring. The other carbon atom is outside the ring and forms a part of a CH2 group.
It contains a five carbon carbohydrate ring bound to the phosphate group, on its other side, the deoxyribose is bonded to a nitrogenous based: Adenine, Thymine, Cytosine or Guanine.
Relative to semantic encoding, organizational encoding shows more activation of the upper left _____ lobe.
The upper left prefrontal lobe shows more activation in organizational encoding compared to semantic encoding.
Explanation:The upper left prefrontal lobe shows more activation in organizational encoding compared to semantic encoding. The prefrontal lobe, specifically the left inferior prefrontal cortex, is responsible for executive functions and higher cognitive processes, such as working memory and attention. It plays a crucial role in organizing and representing information that is not in the immediate environment.
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What is the water cycle and how does the Conservation of Matter apply to the water cycle?
The water cycle is the continuous movement and recycling of water through different states and locations on Earth, without any loss or gain of water molecules, in accordance with the law of conservation of matter. The law states that matter cannot be created or destroyed, which is essential in chemistry and is exemplified by the constancy of matter within the water cycle.
What is the Water Cycle?
The water cycle, also known as the hydrologic cycle, is the continuous movement of water on, above, and below the surface of the Earth. Water molecules travel through different states: gas (water vapor), liquid (water), and solid (ice). The main processes in the water cycle include evaporation, transpiration (from plants), condensation (forming clouds), precipitation (rain or snow), infiltration, and runoff.
Law of Conservation of Matter
The law of conservation of matter states that matter is not created or destroyed in a chemical reaction. This universal law also applies to the water cycle. As water transforms through various states and moves throughout the ecosystem, the amount of matter (water molecules) remains constant. This demonstrates that the water you drink has been a part of the Earth's water cycle for potentially millions of years, undiminished in quantity.
How Conservation of Matter Applies to Chemistry and the Water Cycle?
In chemistry, the law of conservation of matter is fundamental, indicating that the total number of atoms, and thus the mass of all reactants, is equal to that of the products in a chemical reaction. Relating to the water cycle, this law ensures that water molecules, despite changing states or location, are neither lost nor gained overall during the process. All matter, or water in this context, is perpetually recycled within the Earth's system.
A method of genetic fingerprinting that relies on the location of small subunit rrna genes on dna fragments is called
Why do you think that the catalase protein has persisted over time in so many organisms?
Final answer:
Catalase has persisted over time in many organisms because it enables them to detoxify hydrogen peroxide, protecting cells from oxidative damage. This enzyme's widespread presence across species emphasizes its critical role in cellular defense and metabolism, underlining the evolutionary advantage it provides in managing reactive oxygen species.
Explanation:
The catalase protein has persisted over time in many organisms due to its essential role in protecting cells from the harmful effects of hydrogen peroxide, a byproduct of various metabolic processes. Catalase converts hydrogen peroxide into water and oxygen, thereby preventing potential damage to cells. This enzyme is not only involved in detoxifying hydrogen peroxide but also has the capability to oxidize a wide range of organic compounds, albeit at a much lower efficiency. The persistence of catalase can be attributed to its evolutionary advantage, allowing organisms to thrive in oxygen-rich environments. Furthermore, the enzyme's presence across numerous organisms highlights its fundamental role in cellular protection and metabolism. Despite the varying levels of catalase in different species, its existence is a testament to the evolutionary pressures favoring organisms capable of managing reactive oxygen species effectively.
It's also interesting to note that organisms have developed additional mechanisms, such as peroxiredoxins, to cope with lower levels of catalase, indicating a complex interplay of evolutionary adaptations aimed at ensuring survival in reactive oxygen species-rich environments. The persistence and evolution of catalase across diverse species underscore its critical role in cellular defense against oxidative damage.
"_____ is an unpleasant side effect that alcohol withdrawal creates for an alcoholic."
How is the production of mercury from burning coal an environmental hazard?
Answer:its b
Explanation: