HELPPPP 25 POINTSS
use an example to explain the doppler effect
Answer:
The apparent change in the frequency of sound due to the relative motion between the source and the observer is called the Doppler effect.
E.g: The apparent frequency of the whistle of a train increases as it. approaches an observer on the platform and decreases when the train passes the observer.Read more on Sarthaks.com what-is-the-doppler-effect-give-an-example
Description
Definition: Doppler Effect refers to the change in wave frequency during the relative motion between a wave source and its observer. It was discovered by Christian Johann Doppler who described it as the process of increase or decrease of starlight that depends on the relative movement of the star.
Description: Doppler Effect works on both light and sound objects. For instance, when a sound object moves towards you, the frequency of the sound waves increases, leading to a higher pitch. Conversely, if it moves away from you, the frequency of the sound waves decreases and the pitch comes down. The drop in pitch of ambulance sirens as they pass by and the shift in red light are common examples of the Doppler Effect.
Edwin Hubble made the discovery that the universe expands as a consequence of the Doppler Effect. It has important applications in the fields of astronomy and space technology.
Predict what changes might occur if DNA is altered in a particular organism.
Answer:
Explanation:
If the DNA codons are altered in an organism, the genetic code will be inaccurate. This will result in genetic mutations and disorders, depending on how drastic the change was. The two types of mutations are point mutations, that just replace one nucleotide. There's also frame shift mutations, where the amount of codons are incorrect.
The plasma membrane A. controls movement of substances in and out of the cytosol B. has both lipid and protein molecules C. is impermeable D. A and B are correct answers E. all of the above are correct answers
Answer:
I believe it is E. All of the above
Explanation:
Based on the population pyramid, which has the highest cohort (group) of people?
O 14-19
O 50-54
O 70-74
O 40-44
Which plant can survive in dry environments
Answer:
Many plants like Cactus
Cellular respiration is the process that allows living organisms to extract energy from nutrients. What is the main difference between aerobic and anaerobic respiration?.
Answer:
Cellular respiration that proceeds in the absence of oxygen is anaerobic respiration. Cellular respiration that proceeds in the presence of oxygen is aerobic respiration.
The ______ is a series of flattened sacs that sorts and packages materials into vesicles to be sent to the cell membrane. Multiple choice question.
Answer: Golgi body/Golgi Apparatus
Explanation: Golgi body is responsible for packaging and shipping fats and proteins for export around the cell, or outside of the cell.
ii) Name one other thing that weight that affects how much energy you need each day.
Hydrophilic molecules are able to cross the membrane through phospholipids. integral carbohydrates. peripheral proteins. extracellular glycoproteins. transmembrane proteins.
Answer: Most likely transmembrane proteins
Explanation: Facilitate access in and out of cell
How many copies of dna are required to see bands on the electrophoresis gel.
Describe how plants determine the name of a biome.
Answer:
Biomes are described by their vegetation because plants that grow in an area determine the other organisms that can live there. Plants in a particular biome have characteristics, specialized structures, or adaptations that allow the plants to survive in that biome. These adaptations include size, shape, and color.
please help!! thank you
Answer:
B
Explanation:
B is the only answer that can be proven from the data in the chart, the rest are speculation and not scientific answers.
Proteins are polymers formed of structural units called.
What is a sugar that cannot be extracted from plants.
Answer:
LactoseExplanation:
Lactose is the only sugar that cannot be extracted from plants. It can only be found in milk, including human breast milk, and in some dairy products.
Why would a website for a for-profit organization most likely be an unreliable source for healthcare product information?
Answer:
The website, which is for-profit, is most likely trying to sell something or earn money from advertising a product. So if the product they were trying to sell was a healthcare product, they would try to make it sound like it is the best thing you may ever purchase. The website may earn money off of the purchase.
Nutrient cycles can all be classified as
A. Abiotic Factors
B. Biotic Factors
C. Unnatural
D. Causal Factors
Suppose you have had kidney stones, and you want to see the outside of a kidney stone, in three dimensions, to see why it causes so much pain leaving the body. What microscope would be best suited to this purpose
A scanning electron microscope (SEM) would be the best option for viewing a kidney stone's exterior in three dimensions.
Thus, SEMs use a focussed electron beam to scan the specimen in order to provide finely detailed three-dimensional images of the specimen's surface.
This enables high-resolution imaging of the kidney stone's exterior features, revealing details on its composition, structure, and surface characteristics.
For examining the microstructure of materials and biological samples, SEMs are extensively employed in a wide range of scientific and medical applications.
Thus, A scanning electron microscope (SEM) would be the best option for viewing a kidney stone's exterior in three dimensions.
Learn more about Microscope, refer to the link:
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Look at the model above and give reasoning to explain how and why the presence of landforms (like the mountain shown) affects atmospheric flow and climate of the area. (You can type your answer below or submit a voice recording.)
PLEASE ANSWER FAST WORTH 60 POINTS MY HOMEWORK IS DUE IN 15 MINTUTES
Answer:
I am sorry if I'm wrong but the higher the altitude the higher the temp so and the mountain could become erosion by the wind
Why was water used to dilute the substances instead of another chemical?
Which location is most likely to be a source
of fossils?
A Exposed mountaintop
B Desert
C Sedimentary rock layers
D Volcanic lava
C. Sedimentary rock layers
Explanation:
This is because they are already in locations where sediment is likely to bury them and shelter them from scavengers and decay.
List FOUR factors that could affect the nutritional needs of a teenager
Answer:
Age, physical activity, gender, and body weight
Explanation:
In Mendel's cross for stem height, what contrasting traits did the pea plants in the P generation exhibit?
Answer:
tall and dwarf pea plants
What type of neurons are found in the postcentral gyrus?.
(i know this was like a week ago but.....)
Tertiary neurons have cell bodies in the thalamus and project to the postcentral gyrus of the parietal lobe, forming a sensory homunculus in the case of touch. Regarding posture, the tertiary neuron is located in the cerebellum.
Numbness in the limbs, visual disturbances, muscle weakness, and urinary problems can all be symptoms of ____
Answer:
Aside from numbness, weakness, restless leg syndrome and fatigue there are numerous symptoms associated with multiple sclerosis – some more common than others. Common symptoms of MS Walking difficulties – weakness, spasticity, loss of balance, sensory deficits and fatigue can all be contributing factors
Explanation:
where dose the extra electron in a negatively charged atom come from? pls help
Answer:
A negatively charged atom is called an anion. This just means it has gained electrons (negative charges) and the atom has become negative instead of neutral since number of protons = number of electrons. Now it has 1 or more extra electrons, it is more negative than positive or neutral.
How are environment and development related to each other? Explain.
Answer:
Population, environment, and development are interrelated to each other. Environment affects the life of living organisms and socio-economic development process. Development simply means progress or positive change.Explanation:
please mark me brrenlist ✨ ✨ ✨ ✨ ⭐Environment and development are related to each other because environmental factors influence the process of differentiation during growth.
How does the environment influence development?The environment influences development by altering a biological process known as cellular differentiation.
Differentiation is a process by which cells divide to develop specific cell types, which depends on differential gene expression patterns influenced by environmental conditions.During growth, environmental factors and genetic factors work together to shape developmental programs in an organism.
In conclusion, environment and development are related to each other because environmental factors influence the process of differentiation during development.
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A man presents to an ER with a large laceration sustained at a construction site 3 days before. The area around the laceration is erythematous, painful, and swollen. The erythema and swelling can be explained at a cellular level by all the following EXCEPTGroup of answer choicesmast cell degranulation and release of histamine.pro-inflammatory prostaglandins released.increased vasomotor tone (vasoconstriction) of the capillaries in the area.local reaction to acute phase reactants.
The erythema and swelling can be explained at a cellular level by all except increased vasomotor tone (vasoconstriction) of the capillaries in the area. Erythema causes skin redness.
What is erythema?Erythema refers to skin redness due to injury and/or inflammation in a given region of the body.
Erythema may be due to different factors (e.g., environment, virus infection, sunburn, etc).
Conversely, vasoconstriction refers to constriction of the blood vessels, which is caused by their cells walls.
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Compared to unicellular algae, seaweeds _____.
Answer:
Compared to unicellular algae, seaweeds are eukaryotic
Explanation:
What happens when a plant is losing too much water through transpiration? Question 12 options: Stomata open Stomata close Guard cells swell Respiration increases.
Answer:
Stomata close
Explanation:
The enzymes of the electron transport chain use the energy released during the transfer of electrons to:
Answer:
When the pair of electrons are transfered from the cytochrome b c 1 complex to cytochrome c , the energy released is used to pump another pair of hydrogen ions into the intermembrane space through the cytochrome b c 1 complex.
Explanation: