Answer:
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth. Carbon is the main component of biological compounds as well as a major component of many minerals such as limestone. Along with the nitrogen cycle and the water cycle, the carbon cycle comprises a sequence of events that are key to make Earth capable of sustaining life. It describes the movement of carbon as it is recycled and reused throughout the biosphere, as well as long-term processes of carbon sequestration to and release from carbon sinks. Carbon sinks in the land and the ocean each currently take up about one-quarter of anthropogenic carbon emissions each year.
Explanation:
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Which of the following equation has x = 6 as the solution?.
How is a phylogenetic tree similar to a dichotomous key.
A phylogenetic tree represents the history of lineages of organisms, a dichotomous key is a tool to discover which group an organism belongs to, using taxonomic keys, both structures were founded by Carl Linneaus.
What is a phylogenetic tree?It is a schematic diagram used to illustrate or represent hypotheses about the evolutionary relationships between a group of organisms.
What is a dichotomous key?It consists of a model or scheme that allows the determination of different species.
Therefore, we can conclude that a phylogenetic tree is a structure used to represent ancestor-descendant relationships, a dichotomous key identifies the species to which an organism belongs, both structures were founded by Carl Linneaus.
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Answer:
Both focus on illustrating taxonomic relationships between organisms.
When is it okay to touch the inside of a computer that is turned on?.
Arrange the jumbled sentences to form an organized paragraph.
Answer:
what sentences??
Explanation:
To find the number of molecules in the given sample of her compound, which of these values must also be used in her calculation?.
The value which must be used to find the number of molecules in the given sample of her compound is; Avogadro's number.
Avogadro's number and the Number moleculesThe Avogadro's constant, otherwise known as the Avogadro's number is the proportionality constant that relates the number of constituent particles in a sample with the amount of substance in the sample in discuss.
Its SI unit is the reciprocal of mole, and it is estimated exactly as Na = 6.02214076×10²³ mol⁻¹.
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The school store has 1500 pencils in stock and sells an average of 20 pencils per day. The manager reorders when the number of pencils in stock is 460.
The number of days it will take the manager to reorder pencils is 52 days
How many days will it take to reorder the pencilsGiven:
Total pencils in stock = 1500Average pencils sold per day = 20Number of pencils remaining before reorder = 460Number of pencils sold before reorder = 1500 - 460
= 1,040 pencils
Number of days used to sell the pencils = Number of pencils sold before reorder ÷ Average pencils sold per day
= 1,040 ÷ 20
= 52 days
The complete question:
in how many days will the manager have to reorder
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On a particular day, caroline decided to run two laps of a park of which each lap is 1. 2kms. She takes 12 minutes to run her first lap, and she runs her second lap at an average speed of 7 km/h. Determine her average speed over the two laps.
Answer:
6.46 km/h
Explanation:
Total distance d = 2 * 1.2 = 2.4 km
Total time t = 12 min + t' where t' is the time taken for second lap.
t' = 1.2 km/(7 km/h) = 1.2/7 hours
so t = 12/60 hours + 1.2/7 hours = 0.3714 hours
The average speed = d/t - 2.4/0.3714 = 6.46 km/h
A cart is pulled a distance d on a horizontal surface while it is acted on by five forces, as shown in the diagram. Normal forces of magnitudes n1 and n2 are directed upwards at the rear and front wheels, respectively. Rolling frictional forces of magnitudes f1 and f2 are opposite in direction to the displacement and act on the rear and front wheels, respectively. The weight of the cart, with magnitude w, is directed downward. Finally, a pulling force of magnitude p makes and angle of φ with horizontal. The direction of the displacement is to the right in the diagram.
The work done by the pulling force is [tex]P\cdot d \cdot \cos \theta[/tex].
The work done by rear wheels normal force is 0.
The work done by front wheels normal force is 0.
The work done by rear wheels friction force is [tex]-f_{1}\cdot d[/tex].
The work done by front wheels friction force is [tex]-f_{2}\cdot d[/tex].
The work done by weight is 0.
How to determine the work done by a force
In this question, we see a system with six uniform and stable forces. The equation of work done by a uniform and stable force is:
[tex]W = F\cdot s\cdot \cos \theta[/tex] (1)
Where:
[tex]F[/tex] - Force, in newtons. [tex]s[/tex] - Traveled distance, in meters.[tex]\theta[/tex] - Angle of force respect to displacement direction, in degrees.Now we proceed to calculate the work done by each force:
Pulling force ([tex]P[/tex])[tex]W_{P} = P\cdot d\cdot \cos \theta[/tex] (2)
The work done by the pulling force is [tex]P\cdot d \cdot \cos \theta[/tex]. [tex]\blacksquare[/tex]
Rear wheels normal force ([tex]N_{1}[/tex])
[tex]W_{N_{1}} = N_{1}\cdot d\cdot \cos 90^{\circ}[/tex]
[tex]W_{N_{1}} = 0[/tex] (3)
The work done by rear wheels normal force is 0. [tex]\blacksquare[/tex]
Front wheels normal force ([tex]N_{2}[/tex])
[tex]W_{N_{2}} = N_{2}\cdot d\cdot \cos 90^{\circ}[/tex]
[tex]W_{N_{2}} = 0[/tex] (4)
The work done by front wheels normal force is 0. [tex]\blacksquare[/tex]
Rear wheels friction force ([tex]f_{1}[/tex])
[tex]W_{f_{1}} = f_{1}\cdot d\cdot \cos 180^{\circ}[/tex]
[tex]W_{f_{1}} = - f_{1}\cdot d[/tex] (5)
The work done by rear wheels friction force is [tex]-f_{1}\cdot d[/tex]. [tex]\blacksquare[/tex]
Front wheels friction force ([tex]f_{2}[/tex])
[tex]W_{f_{2}} = f_{2}\cdot d\cdot \cos 180^{\circ}[/tex]
[tex]W_{f_{2}} = -f_{2}\cdot d[/tex] (6)
The work done by front wheels friction force is [tex]-f_{2}\cdot d[/tex]. [tex]\blacksquare[/tex]
Weight ([tex]W[/tex])
[tex]W_{W} = W\cdot d\cdot \cos 270^{\circ}[/tex]
[tex]W_{W} = 0[/tex] (7)
The work done by weight is 0. [tex]\blacksquare[/tex]
Remark
The question is poorly formatted and a figure is missing. Correct form is shown below:
A cart is pulled a distance [tex]d[/tex] on a horizontal surface while it is acted on by forces, as shown in the diagram. What is the work done by each force?
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In a multiple choice exam, there are 5 questions and 4 choices for each question (a, b, c, d). Nancy has not studied for the exam at all and decides to randomly guess the answers. What is the probability that:.
Using the binomial distribution, it is found that there is a 0.6836 = 68.36% probability that she guesses at least one right.
For each question, there are only two possible outcomes, either she gets it right or she does not get it right. The probability of getting a question right is independent of any other question, hence the binomial distribution is used to solve this question.
What is the binomial distribution formula?The formula is:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
The parameters are:
x is the number of successes.n is the number of trials.p is the probability of a success on a single trial.In this problem:
There are 5 questions, hence n = 5.For each question, she guesses one out of 4 options, hence p = 1/4 = 0.25.The probability that she guesses at least one right is:
[tex]P(X \geq 1) = 1 - P(X = 0)[/tex]
In which:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{4,0}.(0.25)^{0}.(0.75)^{4} = 0.3164[/tex]
Hence:
[tex]P(X \geq 1) = 1 - P(X = 0) = 1 - 0.3164 = 0.6836[/tex]
0.6836 = 68.36% probability that she guesses at least one right.
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Which style did the artist use to decorate this horse bit from luristan?.
Answer:
The artist used Animal Style
Explanation:
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Which of the following are coefficients you could use in a balanced equation? (select all that apply).
The complete question has options given are; 1, 9, 1/2, .5, 2, 3/4 and 6.
The coefficients which could be used in a balanced equation are; 1, 9, 2, and 6.
Coefficients in balanced equationsThe coefficients which can be used in balanced equations are whole numbers.
Although, other type of numbers such as fractions and decimals can be used, they may need to be simplified into whole number forms by multiplying the whole equation by a required factor for ease of computation
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Eighty percent of a roof, or 2800 square feet of the roof, has been re-shingled. What is the total area of the roof?.
Answer:
The total area of the roof is 3500 ft^2
Explanation:
2800ft^2 = 80% of roof
Divide by 0.8 to solve for the total area.
2800 / 0.8 = 3500 ft^2
The local driver’s license center processes applications for driver’s license renewals through the following three steps. First, the customer registers with the receptionist, who updates the customer’s information in the database. This first step takes 3 minutes per customer. Then, the customer visits one of two cashiers to pay the associated fees for the license renewal. This takes 7 minutes per customer because several forms must be printed from the computer and signed by the customer. Finally, the customer visits one of three license processing stations where the customer’s picture is taken, and the license is printed. This final step takes 12 minutes per customer.
The license station has the lowest with 12 customers per hour assuming an unlimited demand.
Given the following data:
First step = 3 minutes per customer. Second step = 7 minutes per customer. Final step = 12 minutes per customer.To determine the flow rate of the process in customers per hour assuming unlimited demand:
What is a flow rate?A flow rate is an average rate and it can be defined as the number of flow units that goes through a business process per unit time such as served customers per hour.
Some examples of flow units in a business firm include:
MoneyGoodsServicesCustomersGenerally, the flow rate of a business process is highly dependent on the capacity of the bottleneck and the license station has the lowest with 12 customers per hour assuming an unlimited demand.
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How does the poem fit the structural definition of a lyric poem brainly.
Poem fit the structural definition of a lyric poem when it short and emotional.
What is a Poem?poem are writing that are rhythmic, the writings or words are selected based on the sound it's produced and beauty and they are arranged in short line form.
A lyric poem is usually full of emotions and song like. The poem is narrated or read in first person and short.
Therefore, for poem to fit the structural definition of a lyric poem it must be short and emotional.
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A company sells kites. It sells basic kites and designer kite's. 2 basic kites and 2 designer kites have a total weight of 400 g. 4 basic kites and 1 designer kite have a total weight of 440 g. Work out the weight of a basic kite and the weight of a designer kite.
Answer:
basic = 80g
designer = 120g
Explanation:
simultaneous equations:
2B + 2D = 400g
4B + D = 440g -> D = 440 - 4B
to work out B:
2B + 2(440 - 4B) = 440
2B + 880 - 8B = 440 # divide whole thing by 2 to make it simpler
B + 440 - 4B = 220
-3B = -240 # divide both sides by -1
3B = 240
B = 80
to work out D: (substitute B)
4(80) + D = 440g
320 + D = 440g
D = 120
As per the given data, a basic kite weighs 80 g and a designer kite weighs 120 g.
What is marketing?Marketing is the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging value-added offerings for customers, clients, partners, and society as a whole.
Let's denote the weight of a basic kite as w_b and the weight of a designer kite as w_d.
We can set up a system of equations based on the given information:
2w_b + 2w_d = 400 (equation 1)
4w_b + 1w_d = 440 (equation 2)
We can then solve for w_b and w_d using elimination or substitution.
Using elimination:
Multiply equation 1 by 2: 4w_b + 4w_d = 800Subtract equation 2 from the above: (4w_b + 4w_d) - (4w_b + 1w_d) = 800 - 440Simplify: 3w_d = 360Solve for w_d: w_d = 120Substitute w_d into equation 1 and solve for w_b: w_b = 80Therefore, a basic kite weighs 80 g and a designer kite weighs 120 g.
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Which of the following ions would have a tetrahedral shape.
A stunt person jumps from the roof of a tall building, but no injury occurs because the person lands on a large, air-filled bag. Which one of the following best describes why no injury occurs?.
What is the molar mass of diazepam (valium ® ) if 0. 05570 mol has a mass of 15. 86 g ?.
Answer:
What is the molar mass of diazepam (valium) if 0.05570 mol has a mass of 15.86 g?
A:
= 15.86 g
They are extremely tall. Son los más altos. Son altísimos.
Answer:
Son altisimos is the best translation.
Explanation:
Altering the three-dimensional structure of an enzyme is referred to as.
Altering or changing the three-dimensional (3D) structure of an enzyme is referred to as: denaturation.
What is an enzyme?An enzyme can be defined as a biological catalyst that typically speeds up (increases) the rate of a chemical reaction, by lowering (decreasing) the activation energy of its constituent chemical elements (reactants).
What is denaturation?In Science, denaturation can be defined as a biological process that involves altering or changing the three-dimensional (3D) structure of an enzyme. Also, it prevents the substrate in a chemical reaction from binding the enzyme's active site.
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Consider the situation in which the health inspector finds the sample mean of the 4 pools to be outside the safe ph levels. As a result, the inspector declares that the population mean is not 7. 5. However, if the population mean really is 7. 5, the inspector will have made an error. Such an error is called a type i error. Find the probability that the inspector will make a type i error with the sample of 4 pools. Show your work.
The probability of Type I error is the likelihood of finding a mean outside
the safe zone for the 4 pools.
The probability that the inspector will make a Type I error is 0.0026What is a Type I error and what is the probability that it will occur?In hypothesis testing, a Type I error is the error of rejecting a true null
hypothesis.
From a similar question, the possible parameters are;
The safe pH levels for swimming pools is between 7.2 and 7.8
The standard deviation is 0.2
The probability that the pH is within the safe zone is found as follows;
[tex]The \ z-score, \ Z = \mathbf{\dfrac{\overline x - \mu}{\dfrac{\sigma}{n} }}[/tex]
Which gives;
[tex]\mathbf{P \left(\dfrac{7.2 - 7.5}{\dfrac{0.2}{\sqrt{4} } } < \dfrac{\overline x - \mu}{\sigma} < \dfrac{7.8 - 7.5}{\dfrac{0.2}{\sqrt{4} }} \right)} = P(-3 < Z < 3)[/tex]
P(-3 < Z < 3) = P(Z < 3) - P(Z > -3) = P(Z < 3) - (1 - P(Z < 3))
P(Z < 3) - (1 - P(Z < 3) = 2·P(Z < 3) - 1
2·P(Z < 3) - 1 = 2 × 0.9987 - 1 = 0.9974
The probability that the swimming pool is not safe = 1 - (2·P(Z < 3) - 1)
1 - (2·P(Z < 3) - 1) = 1 - 0.9974 = 0.0026
Which gives;
The probability that the mean will be seen as not in the safe zone and therefore not 7.5 is 0.0026 and the probability that the inspector will make a Type I error is 0.0026Learn more about hypothesis testing here:
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You leave on a 546-mi trip in order to attend a meeting that will start 10. 8 h after you begin your trip. Along the way you plan to stop for dinner. If the fastest you can safely drive is 65 mi/h, what is the longest time you can spend over dinner and still arrive just in time for the meeting?.
Answer:
Explanation:
To find the time the driver can stop for, we must calculate the time it takes him to complete the trip without any stops:
Time without stops = [tex]\frac{546 miles}{65miles/hour} = 8.32 hours[/tex] (approximated)
Since the driver has 10.8 hours to complete the journey, thus the driver can stop for 10.8hrs - 8.32hrs = 2.48hrs
Answer:
2,48 hours
100% correct...........
Gustav was out for his daily walk when he was approached by a thief who demanded his wallet. He immediately felt an increase in his breathing and heart rate. Which of the following accurately describes gustav’s physiological response?.
The term that accurate describes Gustav's physiological response is: alarm reaction.
What is the Alarm Reaction Stage?The alarm reaction stage is characterized by what we can call the "fight-or-flight" response. This occurs when the body receives signal of danger or stress, and thereby puts the body on high alert.
When this occurs, the body initiates psychological response such as increased breathing and heart rate, which prepares the body to either protect or flee from the perceived danger.
Therefore, the term that accurate describes Gustav's physiological response is: alarm reaction.
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A number decreased by 12 is equal to 9 what is the number.
Answer:
21 is the correct answer
Explanation:
9+12=21
21-12=9
A positively-charged piece of plastic is placed next to an electrically neutral piece of paper. What is the force between them?.
The force between a positively charged plastic and a neutral paper is :
Attractive because the plastic polarizes the paper Force of attractionThe force of attraction between a positively charged material and a neutral material becomes stronger as the positively charged material polarizes the neutral material which enables it to exert an attractive force on the neutral material. while
The electrical force of attraction between charged materials reduces with the increase in distance between them.
Hence we can conclude that the force between a positively charged plastic and a neutral paper is attractive because the plastic polarizes the paper.
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When we react a weak base with a strong acid, the component of the base that contributes to the ph of the solution is the:.
The component of the base that contributes to the pH of the solution when a weak base reacts with a strong acid is referred to as the: conjugate base.
What is a Conjugate Base?A conjugate base can b described as the base which differ from an acid based on the presence or absence of proton.
For example, the conjugate base of [tex]NH_{4+}[/tex] is [tex]NH_{3}[/tex].
Therefore, the component of the base that contributes to the pH of the solution when a weak base reacts with a strong acid is referred to as the: conjugate base.
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Answer:
conjugate acid
Explanation:
It is the conjugate acid of the weak base that generates hydronium and therefore contributes to the pH.
Immediately after digestion in the small intestine, most dietary fats are absorbed into the.
Immediately after digestion in the small intestine most dietary fats are absorbed into the bile.
What is the bile?This is the part that is secreted by the liver that is able to perform these functions
Carrying wasteBreaking down of fats during digestion.The bile is where the emulsification of the fats happen after they have been absorbed.
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Which statement best explains what would happen if a reactant were added to a system in equilibrium?.
The statement that best explains what would happen if a reactant was added to a system in equilibrium is: The system would shift toward the products to oppose the change.
What is a System in Equilibrium?When a system that is in equilibrium, it means that the rates of the forward and reverse reactions are equal to each other.
If additional reactant is added to the system in equilibrium, the rate of forward reaction increases as the equilibrium shifts to the right towards the side of the products.
Therefore, the statement that best explains what would happen if a reactant was added to a system in equilibrium is: The system would shift toward the products to oppose the change.
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John is out sick today. Can you take on some of his work? below are his activities that we need to complete today.
The information presented is very effective for John's friend to complete the tasks.
This information is effective, as it allows John's friend to identify activities that should be carried out first, as they are priorities and should receive greater focus and dedication.
What are private activities?Most important activities.Activities that require more dedication.Activities that must be done first.Therefore, as John's friend knows what the priority activity is, he can organize himself better, dedicating more time to activities that require it.
The question you asked is incomplete, but you can find the full version in the attached photo.
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John is out sick today. Below are his activities that we need to complete today.
An activity is a purposeful pursuit or engagement with a specific objective in mind. What kind of activities you engage in will significantly determine how well you achieve your goal. A typical academic endeavour aims for academic learning and high scores.
Teaching strategies include using curriculum activities to make lessons engaging, simple to understand, and successful. It lists the objectives, learning experiences, teaching materials, assessments, and goals of a particular educational programme.
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Canis familiaris (dogs) and canis lupus (wolves) are a different brainly.
Canis familiaris (dogs) and canis lupus (wolves) are a different taxonomic subcategory.
What is a subspecies?A subspecies is a taxonomic subcategory that refers to each of the groups in which a species is found.
Characteristics of a subspeciesThese groups, in addition to having the characteristics of the species in which they are found, have special morphological characters that make them different from each other.Dogs and wolves belong to the same zoological species that is the Canis lupus species.This classification into subspecies is mainly due to the domestication process that gave rise to dogs, in addition to important physiological and anatomical differences.Therefore, we can conclude that dogs are a subspecies, called Canis lupus familiaris, Canis lupus is the species, in which both dogs and wolves are included, being the "familiaris" what refers to the domestic dog.
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Answer:
Species
Explanation: