Selective permeability means that only certain sizes of objects can get through. Sieve or colander allows the passage of objects that are smaller than the mesh, while it selects against larger objects. The selective permeability of a membrane is like to some membranes which only allow glucose to pass through while sucrose which is larger is prohibited.
A sieve or colander demonstrates the property of selective permeability by allowing smaller particles to pass through its pores while retaining larger particles.
Selective permeability is a characteristic of certain membranes and materials that allows some substances to pass through while blocking others. This property is based on the size and sometimes the chemical nature of the particles relative to the size and chemical composition of the pores in the membrane or material.
In the case of a sieve or colander, the device is typically used in cooking to separate solid food particles from liquids or to rinse foods like fruits and vegetables. The sieve or colander has holes or pores of a specific size. These pores are large enough to let water and small food particles pass through but small enough to retain larger food particles. For example, when washing rice, the water and smaller impurities can flow through the sieve, while the rice grains, being larger, are trapped on top.
This selective permeability is not based on the chemical nature of the substances (as it would be in a biological membrane) but rather on the physical size of the particles. The sieve or colander allows for the separation of mixtures based on particle size, which is a practical application of the concept of selective permeability in everyday kitchen use.
Sally can clean the house in 6 hours, her father can clean the house in 4 hours, and her younger brother, dennis, can completely mess up the house in 10 hours. if sally and her father clean and dennis plays, how long will it take to clean the house?
The correct answer is [tex]\(\frac{24}{5}\)[/tex] hours or 4.8 hours. When Sally and her father clean the house together without Dennis messing it up, they can clean the house in [tex]\(\frac{24}{5}\)[/tex] hours or 4.8 hours.
First, let's find the cleaning rates for Sally and her father. Sally can clean the house in 6 hours, which means her rate of cleaning is [tex]\(\frac{1}{6}\)[/tex] of the house per hour. Similarly, her father can clean the house in 4 hours, so his rate of cleaning is [tex]\(\frac{1}{4}\)[/tex] of the house per hour.
When Sally and her father work together, their combined rate of cleaning is the sum of their individual rates:
[tex]\[ \text{Combined rate} = \text{Sally's rate} + \text{Father's rate} = \frac{1}{6} + \frac{1}{4} \][/tex]
To add these fractions, we need a common denominator, which is 12 in this case:
[tex]\[ \text{Combined rate} = \frac{2}{12} + \frac{3}{12} = \frac{5}{12} \][/tex]
This means that together, Sally and her father can clean [tex]\(\frac{5}{12}\)[/tex] of the house per hour.
Now, let's consider Dennis's rate of messing up the house. Dennis can mess up the house in 10 hours, so his rate is [tex]\(\frac{1}{10}\)[/tex] of the house per hour. However, since Dennis is playing and not messing up the house, we do not subtract his rate from the combined cleaning rate.
To find out how long it will take Sally and her father to clean the house together, we divide the total work (1 house) by their combined rate:
[tex]\[ \text{Time to clean together} = \frac{\text{Total work}}{\text{Combined rate}} = \frac{1}{\frac{5}{12}} = \frac{12}{5} \][/tex]
Therefore, it will take Sally and her father [tex]\(\frac{12}{5}\)[/tex] hours, or 2.4 hours, to clean the house together.
When producers (say, of roads) are not able to make all consumers pay for enjoying their product (i.e., the roads), they tend to see a?
When a service organization provides services that affect the initiation, execution, processing, or reporting of a user company's transactions, those services are:?
what is a keyword outline
Lynn files a suit against karl. karl denies lynn's charges and sets forth his own claim that lynn breached their contract and owes karl money for the breach. this is
Final answer:
Karl's action is known as a counterclaim, where he not only defends against Lynn's suit but also asserts that Lynn breached their contract and owes him money.
Explanation:
When Lynn files a suit against Karl and Karl denies Lynn's charges but also sets forth his own claim that Lynn breached their contract and owes him money for the breach, what Karl is presenting is known as a counterclaim. A counterclaim is a claim made by a defendant in a civil lawsuit against the plaintiff. Essentially, in the legal process, the defendant is not only defending themselves against the initial allegations but is also turning around and asserting their own claim against the plaintiff. This is a common legal strategy where both parties believe the other has infringed on their legal rights or failed to fulfill a legal obligation, such as a breach of contract. By filing a counterclaim, Karl is taking the offensive in the legal battle, essentially becoming a plaintiff in relation to his own allegations.
If jakob, who runs a sports jersey assembly factory, knows the marginal cost of the first sports jersey is $21, the marginal cost of the second sports jersey is $40, and the marginal cost of the third jersey is $17, what is the total variable cost of producing three jerseys?
The total variable cost of producing three sports jerseys is $78, calculated by summing the marginal costs of each jersey: $21 for the first, $40 for the second, and $17 for the third.
If Jakob, who runs a sports jersey assembly factory, knows the marginal cost of the first sports jersey is $21, the marginal cost of the second sports jersey is $40, and the marginal cost of the third jersey is $17, the total variable cost of producing three jerseys is the sum of these marginal costs. Therefore, the total variable cost can be calculated as:
Cost of first jersey = $21Cost of second jersey = $40Cost of third jersey = $17The total variable cost for three jerseys is $21 + $40 + $17, which equals $78.
Ann is a self-employed restaurant critic who does her work exclusively from a home office. ann's income is $25,000 before the home office deduction this year. her office takes up 200 square feet of her 1,000-square-foot apartment. the total expenses for her apartment are $6,000 for rent, $1,000 for utilities, $200 for renter's insurance, and $800 for pest control and other maintenance.
To calculate the home office deduction, multiply Ann's income by the percentage of her apartment used as a home office and subtract that amount from her total expenses.
Explanation:To calculate the home office deduction for Ann's self-employed restaurant critic work, we first need to determine the percentage of her apartment used for the home office. In this case, the office takes up 200 square feet out of the total 1,000 square feet. So, the percentage is 200/1000 = 0.2 or 20%. Next, we calculate the total expenses related to the apartment and multiply them by the percentage used for the home office:
Rental expense: $6,000
Utilities expense: $1,000
Renter's insurance: $200
Pest control and maintenance: $800
Total expenses: $6,000 + $1,000 + $200 + $800 = $8,000
Now, we can calculate the home office deduction by multiplying Ann's income by the percentage of the apartment used for the home office:
Home office deduction = Income x Percentage of apartment used for home office
Home office deduction = $25,000 x 20% = $5,000
Therefore, Ann can deduct $5,000 as a home office expense.
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Current labor market trends include _____. an increase in demand for low-skilled american labor an increase in workers staying in the same job for many years an increase in the number of people not counted in employment statistics an increase in service jobs accompanied by a decrease in manufacturing jobs
Answer:
an increase in service jobs accompanied by a decrease in manufacturing jobs
Explanation:
Currently service jobs account for more than 70% of total employment, but it wasn't always like that. In 1990, there were manufacturing jobs than service in America, and the percentage of manufacturing jobs was even larger before.
The two main reasons why manufacturing jobs have decreased are automation (robots performing manufacturing tasks) and an increase in the imports from China and other countries.
Another important trend is that manufacturing jobs used to be the highest paid (in average) per hour, but since 2014 service jobs are paid more.
This trend is going to continue, there will be more high paying service jobs in the future and less low paying manufacturing jobs.
In making decisions for commercial janitorial & maintenance services, inc., isaiah uses a cost-benefit analysis. this analysis is part of
The legal proceeding or legal action brought by either the buyer or the seller under a purchase contract to enforce the terms of the contract is known as
A company has total assets of $1,000, current liabilities of $130, and total liabilities of $350. if debt is the only long-term liability, what is the long-term debt ratio?
explain the role played by the chemical lysophosphatidylcholine in the removal of dying cells
Some people feel that the expense of pollution-controlling devices could lead to business failures and job losses; other people disagree. which is an argument made by those in favor of pollution-controlling devices
Answer: Jobs created by pollution-control will offset those that may be lost.
Explanation: gradpoint correct!
Explain the difference between nominal and real gdp use a simplified numerical example with two differnt years to show your understanding
Measures of the total worth of goods and services generated in a nation in a given year include nominal GDP and real GDP. Their approaches to accounting for inflation, however, vary.
Using the prices that were in effect in a particular year, nominal GDP calculates the value of the products and services produced. Because prices are growing, the nominal GDP might rise even if the economy is not creating additional products and services.
For instance, even if the economy is producing the same number of loaves of bread, the nominal GDP will rise by 50% if the price of a loaf of bread rises from $2 to $3.
When calculating real GDP, prices from a base year are used to determine the value of the products and services produced in the current year. As long as the economy continues generating the same amount of goods and services, this means that real GDP remains unchanged even while prices are growing.
For instance, real GDP won't change if the price of a loaf of bread rises from $2 to $3 but the amount produced stays the same.
Here is a condensed numerical illustration:
In year 1, the economy generates 100 commodities and services at a cost of $10 each. The nominal GDP for year one is therefore 100 * $10, or $1000.The economy continues to generate 100 products and services in year 2, but each one now costs $15. Therefore, the nominal GDP for year two is 100 * $15, or $1500.However, since it is computed using the prices that were in effect in year 1, real GDP in year 2 is still $1,000.Even though the economy did not generate any extra products and services in this case, the nominal GDP rose by 50% from year one to year two. This is due to a 50% rise in price. Real GDP, on the other hand, remained unchanged since inflation has no impact on it.
Hence, nominal GDP is a valuable indicator of an economy's size, it can be deceptive if it isn't adjusted for inflation. Real GDP is a more precise indicator of a nation's economic production and is frequently used to chart economic development through time.
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The key difference between nominal GDP and real GDP is whether inflation is accounted for. Nominal GDP uses current prices, while real GDP uses constant prices.
Nominal GDP measures the value of all goods and services produced within an economy in current prices, without adjusting for inflation. In contrast, real GDP adjusts for inflation, reflecting the true value of goods and services in constant prices.
Example of Nominal and Real GDP
Consider a simplified economy that only produces apples.
Year 1: 100 apples produced, price per apple is $1. Nominal GDP = 100 apples * $1 = $100.Year 2: 100 apples produced, price per apple rises to $2 due to inflation. Nominal GDP = 100 apples * $2 = $200.In this example, even though the quantity of apples produced remains the same, the nominal GDP has increased due to inflation. To find the real GDP for Year 2 (using Year 1 as the base year), we use the original price: Real GDP = 100 apples * $1 = $100.
In business markets with inelastic demand ________.
a. the total demand for products is not much affected by short-term price changes
b. derived demand is absent
c. buyers are highly sensitive to price changes
d. a business purchase usually does not involve a professional purchasing effort
e. a business purchase usually involves less decision participants
The inelastic demand in the business market will likely result in letter a, because the total demand of the products in the business market will not be likely affected if there is a price changes that will only occur in a short time because it is in inelastic demand.
In business markets with inelastic demand, the total demand for products is not significantly impacted by short-term price changes due to low price sensitivity of consumers.
Explanation:In business markets with inelastic demand, the total demand for products is not much affected by short-term price changes. This is because inelastic demand indicates that a 1 percent increase in price leads to less than a 1 percent change in quantity purchased. This demonstrates a low responsiveness by consumers to price changes. The concept of inelastic demand pertains to the broader topic of elasticity and pricing, which plays a significant role in determining tax incidence and how a market reacts to changes in pricing.
What kinds of liabilities are sole proprietors subject to?
The management with realtec international are interested in implementing a functional structure. to do so they should establish
The only cause of the great depression was the stock market crash.
a. True
b. False
Answer:
false
Explanation:
because other things also happened during the poor time period they went through.
Moderate consumption of red wine has been associated with decreased risk for
In the game show jeopardy!, contestants are tested on general information. the type of memory used to answer these kinds of questions is ________.
For management, the major downside of telecommuting is ________.
Approximately ________ percent of americans lack high-speed internet access in their homes.
True or false? when the economy is doing well, a significant share of unemployment is frictional.
The author writes that whoever develops a plan to make children useful should "have his statue set up for a preserver of the nation." this means that the person who solves this problem deserves __________.
As societies become larger humans devised new cultural systems to ____
Which of the following is not a cognate pizza hamburguesa sandwich perrito caliente
Long-term customers are usually more valuable assets than new ones because ________________.
Runner's warehouse purchased digital watches for $92.99. its markup rate is 25% based on the selling price. what is the selling price
Final answer:
To calculate the selling price with a 25% markup based on the selling price, divide the cost price by 0.75, resulting in a selling price of $74.39 for the digital watches.
Explanation:
The subject of this question is mathematics, specifically dealing with the concept of markup in a business context. To find the selling price of the digital watches when Runner's Warehouse adds a 25% markup based on the selling price, we use the following formula where S represents the selling price:
Markup = S - Cost Price
Selling Price = Cost Price + Markup
0.25S = S - $92.99
To solve for S, the selling price, we manipulate the equation:
1.25S = $92.99
S = $92.99 / 1.25
S = $74.392
Rounded to the nearest cent, the selling price of the watches is therefore $74.39.
Which step of the dmaic methodology are specific goals set for company achievement?
The lowest tier of the federal court system is the: