PLEASE HELP! VERY DESPERATE TO FINISH THE COURSE IN A WEEK! I HAD FAMILY ISSUES THAT HELD ME UP FROM SCHOOL WORK FOR ALMOST 2 WEEKS! I NEED SOMEONES HELP PLEASE AND THANK YOU!
This Is the first time that I've ever asked a question on here or asked for help. I apologize if it is not organized enough I tried to do my best with how it is worded on my worksheet. I truly do appreciate anybody's input thank you.
designing a device to protect an egg on impact student guide
materials
four sheets of eight and a half by 11 inch paper
1 m of masking tape
One receivable plastic bag size for an egg
1 m of string
three straws
white school glue
for this assignment your teacher will give you an egg and some building materials. You will use these materials to build a device that will keep an egg from cracking when it is dropped from a certain height. Then you will test the device determine how well it worked and make recommendations to improve its design. You will present your final design and logic that supports it in a lab report. Your lab report must include the title and initial design, observations from your experimental tests and recommendations for a final design based on force and momentum concept. as well as observations from the test conducted. To help you write your lab report there is a student worksheet on the last few pages of this document.
egg drop student worksheet
use this worksheet to design your device and record your data. You can use this form to help you write your lab report.
height of egg drop
ideas for prototype
design preliminary sketches (attach separate paper if needed)
option A
advantages and disadvantages
option b
advantages and disadvantages
option c
advantages and disadvantages
which of these three designs will move forward with? explain your reasoning for selecting this design.
building the prototype
what modifications, if any, did you make to the design during the construction process?
predictions
Will your device cushion the egg?
how are your device do this?
will your device increase the time it takes for the egg to impact the ground? how your device do this?
observations
record your observations in the results of the experimental test of your device below.
evaluating your prototype
what worked well?
which features can be improved upon?
suggestions
how could the design of this device be improved?
why would this change be an improvement?
What force and momentum principle in this movement is based on?
Sketch a final design
draw a well labeled sketch of the final design.
Answers
In order to reduce the reactionary force due to the momentum of the egg, the device should be built with soft materials to be effective.
What is force and momentum?A force is an agent which acts to distort the shape or change the motion of a moving object or the state of rest of a stationary object.
Momentum is the product of the mass of the a body and it's velocity.
Based in Newtons law of motion, a cushioning device for an egg can be construct such that the momentum of the egg is spread out over the surface of the cushioning material.
Therefore, the device should be built with soft materials to be effective.
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Related Questions
Explain how brassinosteroids are synthesised, perceived and promote plant growth and development. Please give named examples and critical analysis to support your answer
Answers
Answer:
Brassinosteroids are synthesized from phytosterols and they promote plant growth and development by modulating cellular processes (e.g, cell division, elongation, photomorphogenesis, responses to environmental stimuli, etc).
Explanation:
Brassinosteroids are phytohormones similar to steroid hormones. Phytosterols include sitosterol, campesterol, and stigmasterol, i.e., lipid (cholesterol) molecules that form the cell membranes. These polyhydroxylated steroidal phytohormones play a wide range of cellular roles during plant growth, development and immunity. Examples of brassinosteroid functions include plant development, xylem differentiation, responses to biotic/abiotic stresses, reproduction, etc. For example, campesterol, which is a precursor of brassinosteroid hormones, is an integral membrane component that functions during plant embryogenesis by regulating the permeability of cell membranes and by altering membrane-associated proteins, as well as signal transduction pathways.
1. How is a food chain different from a food pyramid?
Answers
Answer:
What are some differences between a food chain, web, or energy pyramid? Food chains show a limited feeding relationship between only a few organisms. Energy pyramid is the visual representation of the amount of energy, population, or biomass at each trophic level.
Answer:
A food chain represents the linear relationship between organisms for food. On the other hand, a food pyramid represents the optimal number of servings to be eaten each day from each of the basic food groups
Explanation:
please somebody help will mark
Answers
Which shows the best connection between the digestive and excretory system
Answers
Answer: The digestive system rids the body of the cells' waste and the excretory system fuels the cells. The digestive system does physical digestion while the excretory system carries out chemical digestion.
Explanation:
Answer:
The digestive system rids the body of the cells' waste and the excretory system fuels the cells.
Explanation:
edge
Which of the following events is an important part of the engineering design process?
A.
testing and evaluating models
B.
evaluating design constraints
C.
designing and building models
D.
all of these
PLS QUICKLY ANSWER
Answers
D. all of these are important parts of the engineering design process. Testing and evaluating models, evaluating design constraints, and designing and building models are all key steps in the iterative process of engineering design.
What is an engineering?
Engineering is a field of study and practice that involves the application of scientific and mathematical principles to design, develop, build, and maintain structures, machines, systems, processes, and materials that solve practical problems and improve our lives. Engineers use creativity, critical thinking, and technical knowledge to address challenges related to a wide range of industries.
What is desigh constraints?
Design constraints are the limitations, requirements, or conditions that must be taken into account when creating a design solution. They may be imposed by various factors, such as the project's scope, budget, timeline, regulatory requirements, safety standards, environmental concerns, user needs, or technological limitations.
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Describe the ecosystem that you live in. What other living creatures do you share it with? 5-8 sentences.
Answers
Answer:
i live in Terrestrial ecosystems ( land-based) &, i shared it with frogs,fishes,birds,snakes,insects,turtles....
Explanation:
PLEASE ANSWER!...........................
Answers
6. Hemophilia is a sex-linked trait that is carried on the X chromosome. Why
is there a higher probability that males will exhibit the characteristics of
hemophilia than females?
Answers
Because males carrie those kind of kind of things through the bodies parts women dont have the same parts men do, so its different from the female from the Male. because they have different body parts
Where is cholesterol found in the plasma membrane?
Answers
Answer:
Cholesterol is situated in the cell membrane in between the phospholipids.
why do animals respond faster than plants?
Answers
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Why do animals respond faster than plants?
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When compared plants and animals, the animals responds to the stimuli more faster as compared to the plants due to the presence of nerve cells. ... Whereas when talk about plants there are no nerve cells in the plant body so they cannot respond to the outer stimuli so quickly.#CarryOnLearning
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→ X x K i m 0 2 x XOlder rock layers contain fossils of many kinds of organisms that are not in younger rock layers. What most likely happened to the kinds of organisms that became fossilized? A. They evolved into new organisms that could not become fossilized. OB. They stopped becoming fossilized because their environment changed. OC. They formed fossils in the younger rock layers, but those rock layers broke down. D. They became extinct, so they did not exist when the younger rock layers formed.
Answers
They became extinct, so they did not exist when the younger rock layers formed. Option D.
The most likely scenario based on the information provided is that the organisms that became fossilized in older rock layers became extinct, and therefore, they did not exist when the younger rock layers formed.
Fossils are the preserved remains or traces of organisms from the past, and they provide valuable insights into the history of life on Earth. The distribution of fossils in rock layers follows the principle of superposition, which states that younger rock layers are deposited on top of older ones.
This implies that the fossils found in older rock layers represent organisms that lived in the past and were preserved through the fossilization process.
If the older rock layers contain fossils of many kinds of organisms that are not found in younger rock layers, it suggests that those organisms no longer existed by the time the younger rock layers formed. The absence of their fossils in younger layers indicates that either the organisms became extinct or their populations shifted to different habitats or regions where their remains were not preserved as fossils.
This phenomenon aligns with the concept of extinction, which is the complete disappearance of a species or a group of organisms. Extinction can occur due to various factors such as environmental changes, competition, predation, or other selective pressures.
Organisms that became extinct would not be present in subsequent rock layers because they were no longer alive or did not have a viable population to leave behind fossil remains.
Therefore, the most reasonable explanation is that the organisms that became fossilized in older rock layers became extinct, and this is why they are not found in younger rock layers. SO Option D is correct.
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Tại sao nói tế bào là đơn vị chức năng của sự sống
Answers
Answer:
tế bào là đơn vị chức năng của sự sống Vì tế bào là đơn vị cấu tạo cũng là đơn vị chức năng của cơ thể:
-cơ thể chúng ta được cấu tạo từ các tế bào.
-tế bào thực hiện các hoạt động sống như: trao đổi chất ; sinh trưởng và phát triển ; sinh sản và cảm ứng.
- và khi các tế bào phân chia -> cơ thể lớn lên và sinh sản.
Explanation:
10. The formation of product in a reaction is based on
Answers
5. Mariah wants to know which laundry detergent works the best. She has 5 squares of the same fabric; and they are all the same size. She puts identical dirt stains on each of them. She washes one of them with no detergent at all, and then washes each of the others in 4 different detergents. She uses the same amount of detergent, and she makes sure that the water is the same detergent. After they are washed, she checks to see how much of the stain remains on each square of fabric. Identify each of the following:
Independent variable:
Dependent variable:
Answers
The independent variable is the type of detergent while the dependent variable is the number of stains that remain on each square of fabric.
What is the independent variable in an experimental process?The independent variable in an experimental process can be defined as the condition that does not change along the procedure, while the dependent variable suffers a change in regard to the values of the independent variables.
In consequence, the dependent and independent variables can be considered as the cause and effect in an experimental procedure that are mutually related to observing a given outcome in such an experimental procedure.
Therefore, with this data, we can see that the independent variable in an experimental process is one variable that generates the change in the dependent variable and this association may be related to a cause and effect relationship to produce a given outcome.
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Equilibrium occurs when supply and demand coordinate to
Oset excess demand.
Oset prices and production.
O maintain excess supply.
Oraise prices and production.
Answers
Equilibrium occurs when supply and demand coordinate to balance each other out and set excess demand. This means that the quantity of goods or services supplied is equal to the quantity demanded in a given market, and there is no excess demand or excess supply. Hence option A is correct.
In order to achieve equilibrium, prices and production levels may need to be adjusted. If there is excess demand, meaning that the quantity demanded is greater than the quantity supplied, prices may need to be raised and production may need to be increased to meet the demand. On the other hand, if there is excess supply, meaning that the quantity supplied is greater than the quantity demanded, prices may need to be lowered and production may need to be decreased in order to reduce the supply.
Overall, equilibrium occurs when supply and demand are in balance, and prices and production levels are adjusted to maintain this balance.
Hence option A is correct.
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HELP!!!!!!!!! Will give brainliest!!!!!!
Answers
The constituent that should be avoid by the vegan is gelatin (option C).
What is a vegan?Vegan is related to a person who is committed to avoiding any product or practice that inherently involves animal use.
Gelatin is a protein derived through partial hydrolysis of the collagen extracted from animal skin, bones, cartilage, ligaments, etc.
Pectin is a polysaccharide extracted from the cell walls of plants, especially of fruits.
Carrageenan is a food additive made from a purified extract of red seaweed, commonly used as a thickening agent.
Based on the above, gelatin is from an animal source, hence, should be avoided.
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1. Imagine that the class had 25% of students with free earlobes and 75% with attached earlobes. What would this suggest about the frequency of the dominant (F) and recessive (f) alleles for these traits in the class population? Explain your reasoning.
Answers
Answer:
People with free earlobes carry one or two dominant alleles which means that the free earlobe is a dominant trait over attached earlobes that carries two recessive alleles. The recessive allele is represented by f and the dominant allele is represented by F.
It is given that in a class 25% of students in the class had free earlobes which means either 25% of total alleles are FF or Ff and the rest 75% have ff. It suggests that recessive alleles have more frequency than dominant alleles.
Select the photosynthetic molecule that gives halobacteria its unique color.
a.) Caratenoids
b.)Thylakoids
c.)Bacteriochlorophylls
d.)Bacteriorhodopsin
Answers
Answer:
Bacteriorhodopsin
Explanation:
Purple Halobacterium species owe their color to bacteriorhodopsin, a light-sensitive protein.
Question 2 of 10
How did oxygen first enter Earth's atmosphere?
Answers
Answer: It wouild be biological proceses
what muscles of the brachium extend the forearm at the elbow?
Answers
Answer:
the triceps brachii and anconeus
A red flower and a white flower can be expressed on a plant, depending on genetics. Which outcome would indicate codominance as the inheritance pattern for flower color in this species?
A All offspring of a red X white cross would be pink.
B All offspring of a red X white cross would be spotted with red and white both being expressed.
C All offspring are white.
D All offspring are red.
Answers
A cross between a red and a white animal would result in all of its offspring having both red and white spots.
Codominant inheritance occurs whenever a heterozygote produces both copies of a gene pair. Thus, the phenotype of the offspring combines this same phenotypes of the its parents.
The characteristic is therefore neither recessive nor dominant. Those with type AB blood serve as an example of the codominance of people. A individual who inherits both IA and IB will have form AB blood because they are codominant and would be expressed together as a result.
The crimson flower to white spots on it and the creatures with black and white jackets are two much farther examples of codominance.
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Which of the following junctions binds a cell to another cell and is linked to keratin intermediate filaments?
a. desmosome
b. tight junction
c. adherens junction
d. hemidesmosome
Answers
Which of the following claims is supported by the data observed in the graph?
I. Meat production is more efficient than agricultural crops per square meter.
II. More protein is produced per square meter by lamb and mutton than pig and poultry.
III. Agricultural crops are more efficient than meat production per square meter.
A) I only
B) II only
C) I and III only
D) II and III only
Answers
The claim that is supported by the data observed in the graph is Agricultural crops are more efficient than meat production per square meter.
Why are agricultural crops more efficient than meat production per square meter?Agricultural crops are generally more efficient than meat production per square meter for several reasons.
These reasons include:
Energy efficiency: Crops require less energy to produce compared to meat. This is because growing crops requires less energy input, such as feed, water, and other resources, compared to raising animals for meat production.Land use efficiency: Growing crops is more land-efficient than raising animals for meat. Crops can be grown more densely and can yield more food per unit of land than livestock can. This is because animals require more space to move around, graze, and obtain their food.Water use efficiency: Crops require less water to produce than meat. Water is required for both crops and livestock, but it takes significantly more water to produce a unit of meat than a unit of crops. This is because animals require water for their own needs as well as to produce the feed that they eat.Environmental impact: Meat production has a higher environmental impact compared to crop production. Livestock produce methane, a potent greenhouse gas, as well as other pollutants. Raising animals also requires more land, water, and other resources, which can lead to deforestation, water depletion, and other environmental issues.Overall, agricultural crops are more efficient than meat production per square meter due to lower energy input, higher land use efficiency, lower water use, and a lower environmental impact.
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2 Itching and other skin problems are signs that a cat or dog may have fl eas. Fleas are parasites known for their biting and blood-sucking abilities. When they bite, fl ea saliva enters the pet’s circulatory system, sometimes causing an allergic response commonly seen as a “hot spot” on the pet’s neck or the base of its tail
Answers
Itching and other skin problems are signs that a cat or dog may have flea. Fleas are parasites known for their biting and blood-sucking abilities. When they bite, flea saliva enters the pet’s circulatory system, sometimes causing an allergic response commonly seen as a “hot spot” on the pet’s neck or the base of its tail.
Fleas are tiny parasitic insects that infest the fur of dogs and cats. They feed on blood and cause skin irritation that results in itching. If the problem is severe, it can lead to more significant health issues. Pet owners should watch for signs of fleas and treat their pets promptly to avoid complications. Fleas lay eggs on the skin of dogs and cats, which hatch and develop into larvae.
The larvae feed on the skin, shedding as they mature. Adult fleas emerge from the larvae, biting the host to feed on blood. The process repeats itself, with adult fleas continuing to lay eggs on the skin of the pet.The most common sign of fleas in dogs and cats is itching. Pets will often scratch themselves, bite their skin, or lick excessively to relieve the irritation.
Other signs of fleas include red or inflamed skin, hair loss, and the appearance of small, raised bumps on the skin. These bumps are often referred to as "flea dirt" and are the waste products of the fleas. In severe cases, anemia, an allergic reaction, or the transmission of other parasites or diseases can occur.
Flea infestations can be treated with a variety of products, including topical treatments, shampoos, and collars. It is essential to follow the instructions on the product label and treat the pet and the surrounding environment to eliminate the fleas. Prevention is key to avoiding flea infestations, so pet owners should maintain a regular grooming and flea prevention schedule.
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Cars A, B, and C are traveling counterclockwise at the same constant speed around the track shown below. Interpret the diagram and answer the question below. What
car will change velocity first?
A. A
B. B
C. C
D. There would be change in velocity is the speed is constant
Answers
Answer:
Its B
Explanation:
because the car would have to SLOW down and change velocity while it turns
Answer:
B
Explanation:
Car B will have to slow down when turning the corner.
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Which statement indicates the function of natural killer cells within the immune system?
Attack nonselectively on nonself cells, especially mutated and malignant cells
Answers
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Explanation:
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The statement "Attack nonselectively on nonself cells, especially mutated and malignant cells" accurately indicates the function of natural killer (NK) cells within the immune system.
What are Natural killer cells?
Natural killer cells or NK cells are a type of lymphocyte that plays a critical role in the innate immune response.
One of their primary functions is to recognize and eliminate cells that are infected with viruses or have undergone malignant transformations, such as cancer cells.
Unlike other immune cells that require prior exposure or recognition of specific antigens, NK cells can attack a broad range of nonself cells without the need for prior sensitization.
They are particularly effective in targeting and destroying cells that display abnormal or altered surface markers, making them an essential part of the body's defense against viral infections and cancer.
Thus, the statement is correct.
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role of all four types of lipids: fats, phospholipids, waxes, and steroids.
Answers
The four types of lipids, namely fats, phospholipids, waxes, and steroids, play distinct roles in various biological processes. Fats are primarily involved in energy storage, while phospholipids form the structural basis of cell membranes. Waxes provide protection and waterproofing for plants and animals, and steroids serve as signaling molecules and are involved in various physiological functions.
1. Fats: Fats, also known as triglycerides, are a type of lipid that play a crucial role in energy storage. They are composed of glycerol and three fatty acid chains. Fats are stored in adipose tissue and serve as a long-term energy reserve. During times of energy deficiency, fats are broken down through a process called lipolysis to release energy.
2. Phospholipids: Phospholipids are a major component of cell membranes. They consist of a glycerol molecule, two fatty acid chains, and a phosphate group. The unique structure of phospholipids allows them to form a lipid bilayer in cell membranes, with the hydrophobic fatty acid tails facing inward and the hydrophilic phosphate heads facing outward. This arrangement creates a selectively permeable barrier that controls the movement of substances in and out of the cell.
3. Waxes: Waxes are a type of lipid that serve protective functions in both plants and animals. They are composed of long-chain fatty acids and a long-chain alcohol. In plants, waxes form a waterproof coating on the outer surfaces of leaves, stems, and fruits, preventing excessive water loss and providing protection against pathogens. In animals, waxes are found in structures such as the ear canal, providing lubrication and protection against foreign particles.
4. Steroids: Steroids are a class of lipids characterized by a four-ring structure. They have diverse roles in the body, including serving as signaling molecules and regulating various physiological processes. For example, cholesterol, a type of steroid, is a precursor for the synthesis of steroid hormones such as estrogen, testosterone, and cortisol. These hormones play essential roles in reproduction, development, and metabolism.
Overall, the four types of lipids - fats, phospholipids, waxes, and steroids - each have distinct functions and contribute to various biological processes in organisms.
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Which scenario describes a relationship of parasitism? A. Oxpecker birds eat parasitic ticks off the backs of zebras B. A polar bear catches a seal for dinner C. Birds feed off the insects that are stirred up from the grasses as cattle move through D. Birds feed off the insects that are stirred up from the grasses as cattle move through
Answers
A moray eel eats a fish swimming by.
i took the k-12 test
The scenario which describes a relationship of parasitism is a tick feeds on the blood of a dog. Therefore, the correct option is D.
What is parasitism?In parasitism, one organism (the parasite) benefits at the expense of another organism (the host). In this scenario, the tick benefits by feeding on the dog's blood, while the dog is harmed by the loss of blood and potential transmission of diseases by the tick.
Option A describes a mutualistic relationship, where the ox pecker birds benefit by feeding on the ticks, and the zebras benefit from having the ticks removed.
Option B describes a predator-prey relationship, where the polar bear benefits by catching and eating the seal, while the seal is harmed by being eaten. Option C and D describe commensalism. They both are same. Therefore, the correct option is D.
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The question is incorrect, but most probably the correct question is,
Which scenario describes a relationship of parasitism?
A. Ox pecker birds eat parasitic ticks off the backs of zebras
B. A polar bear catches a seal for dinner
C. Birds feed off the insects that are stirred up from the grasses as cattle move through
D. A tick feeds on the blood of a dog.
50 POINTS!!! PLEASE HELP MEH
What united the cultures of North Africa and Southwest Asia?
Question 2 options:
A. democracy and capitalism
B. British and Spanish colonial rule
C. hieroglyphics and pharaoh worship
D. Arabic language and Islamic learning
Answers
Answer:
D. Arabic language and Islamic learning
Explanation:
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Wood is a substance that burns in the presence of oxygen. Which best describes this property of wood?
O reactive
O combustible
metallic
O sour