Answer:
3 ft 10 in
Explanation:
11 ft 6 in = 138 inches
138 / 3 = 46
46 inches = 3 ft 10 in
Visible light travels at a speed 3. 0 × 108 of m/s. If red light has a wavelength of 6. 5 × 10–7 m, what the frequency of this light?.
Answer:
4.6 x 10^14 hz
Explanation:
frequency = speed / wavelength
speed : 3.0 x 10^8
wavelength : 6.5 x 10^-7
frequency = 3.0 x 10^8 / 6.5 x 10^-7 = 4.6 x 10^14
The following forces are applied to a box. What is the net force acting on the box?.
We have that force forces on a plane we Resolve to the x plane and the y plane then we derive the corresponding result using the equation
[tex]R=\sqrt{(\sum fx)^2+(\sum fy)^2}[/tex]
From the question we are told
The following forces are applied to a box.
What is the net force acting on the box?.
ForceNet force is seen as the Difference between the force coming to and out of a body
Generally the equation for the Net Force is mathematically given as
[tex]R=\sqrt{(\sum fx)^2+(\sum fy)^2}[/tex]
Therefore
For two forces
We Resolve to the x plane and the y plane then we derive the corresponding result using the equationFor more information on Force visit
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An online news source reports that the proportion of smartphone owners who use a certain operating system is 0. 216. Two simulations will be conducted to create a sampling distribution of the sample proportion from a population with proportion 0. 216. Simulation a will consist of 1,000 trials with a sample size of 50. Simulation b will consist of 500 trials with a sample size of 100. Which of the following describes the centers and variabilities that should be apparent in the distributions generated by simulation a and simulation b?.
It should be noted that the centers and variabilities that should be apparent in the distributions is that as the sample size increases, the variability of each sampling distribution decreases.
What is a sample size?It should be noted that a sample size simply means the number if subjects that are talked into consideration from the entire population.
In this case, the centers and variabilities that should be apparent in the distributions is that as the sample size increases, the variability of each sampling distribution decreases. This was generated from the simulations.
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Which of these best represents the official recommendation of the sibley commission in 1960?.
The statement that represent the official recommendation of Sibley commission was that School districts should individually determine whether to desegregate.
What is the purpose of Sibley Commission?The committee was formed to find out public sentiment regarding the school desegregation.
In the investigation, the Sibley Commission realized that like two-third of Georgians would rather see schools closed than integrated.
In conclusion, the statement that represent the official recommendation of Sibley commission was that School districts should individually determine whether to desegregate.
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Answer:
it is strange none of the usa test prep answers were actually accurate.
Explanation: but it was b
The alpine house, incorporated, is a large retailer of snow skis. The company assembled the information shown below for the quarter ended march 31:.
From the income statement, it can be deduced that the net profit of Alpine house will be $8000.
How to calculate new profitFrom the complete information, the net profit will be calculated thus:
Total sales revenue = $150000
Less: Cost of sales = $90000
Gross profit = $60000
Less: Variable selling expense = $10000
Less: Variable administrative expenses = $2000
Less: Total fixed selling expense = $20000
Less: Total fixed adminstrative expense = $20000
Net profit = $8000
In conclusion, the net profit is $8000.
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Which factor most directly affects the flow of ocean currents?.
Answer:
The factor that most affects the flow of ocean currents is B. differences in temperature
The difference of the two solutions of x^2-17x+c=0 is 1.
Answer:
c=17×-2
Explanation:
c+12
x= ------------------
17
Which of the following is true about asteroids?
A. Asteroids vary greatly in size and are mostly made up of stone, iron and nickel.
B. Asteroids are all very large and are mostly made up of stone, iron and nickel.
C. Asteroids are all very large and are mostly made up of frozen water and gas.
D. Asteroids vary greatly in size and are mostly made up of frozen water and gas.
Answer:
A
Explanation:
Which of the following is an example of corporate responsibility research?.
Which of the following most directly explains the importance of improved agricultural productivity to the industrialization of economic production in western europe in the period 1750–1900 ?.
The importance of improving agricultural productivity for the industrialization of economic production in Europe in the period from 1750 to 1900 is that as less labor was needed on farms, more people moved to urban areas to work in factories.
First Industrial RevolutionIt began in England in 1760, a period in which the transition from the feudal to the capitalist system took place. This transition occurred due to the technological development in Europe, which generated several economic and social transformations in the world.
Therefore, the impacts of the Industrial Revolution are related to the productive processes, which ceased to be artisanal to be developed in factories with the use of machines, thus emerging new working relationships.
The correct answer is:
Because less labor was needed on farms, more people moved to urban areas to work in factories.Find out more information about Industrial Revolution here:
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One of the benefits inherent in describing the life cycle of a family is the fact that most depictions of the life cycle of a family are stage theories and are linear in nature.
it should be noted that one of the benefits inherent in describing the life cycle of a family is the fact that most depictions of the life cycle of a family are stage theories and are linear in nature.
What is family life cycle?The family life cycle can be regarded as series of stages which a family could pass through over time.
These may includes effects of marriage as well as divorce and births and death.
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Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at − 14. 5 ∘c ? the freezing point for pure water is 0. 0 ∘c and kf is equal to 1. 86 ∘c kg mol−1.
The mass of KNO₃ that is required to be added to 275 ml of water is; 108.3 g
Dissolution of a SoluteWe are given;
K f = 1.86 °C.kg/m
Mass of solution = 275 g = 0.275 Kg
Freezing point of solution = −14.5 °C
Freezing point of pure water = 0.0 °C
We know that;
Δ T = Freezing point of solve nt - Freezing point of solut ion
Thus;
Δ T = 0°C - ( -14.5 °C)
Δ T = 14.5 °C
Also;
Δ T = K f * m * i
where;
K f is free zing con stant
m is m o l a l i t y
i is V a n t H o f f factor
Since KNO₃ produces two particles then; i = 2
Making the m the subject of the formula gives;
m = ΔT /(K × i)
m = 14.5 °C/(1.86 °C . kg/m o l × 2)
m = 3.898 m
Now;
M o l a l i t y = number of mo les/mass of solution in kilograms
Thus;
number of mo les of solute = m o l a l i t y × mass of solution in kilograms
number of mo les of solute= 3.898 m × 0.275 Kg
number of mo les of solute= 1.072 moles
Thus;
Number of mo les = mass/mo lar mass
M o lar mass of KNO₃ = 101 g/mol
Mass = Number of mo les × 101 g/mol
Mass = 1.072 moles × 101 g/mol
Mass of KNO₃ = 108.3 g
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Which of the following most directly explains the importance of improved agricultural productivity.
Answer:
Hope this helps :)
Explanation:
Which of the following most directly explains the importance of improved agricultural productivity to the industrialization of economic production in western Europe in the period 1750-1900 ? Because less labor was needed on farms, more people moved to urban areas to work in factories.
Which of the following most likely explains why the scroll was copied for a new audience in the 1350s?.
Answer:
because they see good things
The scroll serves as new audience in 1350s because Mongols adopted and spread technological innovations from regions within their empire.
What is a scroll?scroll serves as a displayed text or graphic that is used in different parts of a thing on the computer screen.
Therefore, Mongols adopted and spread technological innovations with the use of the scroll.
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#SPJ2
What is the mass in grams of 1. 50 moles of sodium chloride.
Answer:
you have two answers here, and they are 87.7 or 87.66. either should work.
A student added a sample of nh4no3(s) to water and measured the temperature over time. The data are shown in the graph above.
The values that the student should use to calculate the difference in temperature of the solution are; the final and initial temperature of the solution
Final and Initial Temperature of a SolutionFrom the attached image, to get the change in temperature that will be used to calculate the amount of heat given off or absorbed which we represent by q, we just read the initial and final temperature of the solution from the graph to get;
Initial Temperature of the solution; T_i = 24.8 °C
Final Temperature of the solution; T_f = 22.2 °C
Thus;
Change in temperature is calculated as;
ΔT = T_f - T_i
ΔT = 22.2 - 24.8 = -2.6°C
Thus, the values the student should use to get the difference in temperature are the final and initial temperatures
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Which of the following series arranges alkanes into increasing boiling point?.
Answer: arrange a number of given straight-chain alkanes in order of increasing or decreasing boiling point or melting point.
arrange a series of isomeric alkanes in order of increasing or decreasing boiling point.
explain the difference in boiling points between a given number of alkanes.
Explanation:Table 3.5.1 describes some of the properties of some straight-chain alkanes.
There is not a significant electronegativity difference between carbon and hydrogen, thus, there is not any significant bond polarity. The molecules themselves also have very little polarity. A totally symmetrical molecule like methane is completely non-polar, meaning that the only attractions between one molecule and its neighbors will be Van der Waals dispersion forces. These forces will be very small for a molecule like methane but will increase as the molecules get bigger. Therefore, the boiling points of the alkanes increase with molecular size.
For isomers, the more branched the chain, the lower the boiling point tends to be. Van der Waals dispersion forces are smaller for shorter molecules and only operate over very short distances between one molecule and its neighbors. It is more difficult for short, fat molecules (with lots of branching) to lie as close together as long, thin molecules.
The boiling points shown are for the "straight chain" isomers of which there is more than one. The first four alkanes are gases at room temperature, and solids do not begin to appear until about C17H36 , but this is imprecise because different isomers typically have different melting and boiling points.
Logan and berkeley have a thriving dog grooming business which operates 5 hours a day for 4 days a week. They currently have one dog groomer and are considering hiring a second groomer. They believe that after a 12 week period, the second groomer should be able to groom 3 dogs per hour, but only groom 1 dog per hour in the first 12 weeks while they learn the ropes. By adding a second groomer, logan and berkeley would need to install an additional sink, costing $20,000, and also incur an additional $27 per hour in labour costs. Apart from labour, their current costs are $15 per dog groom (covering items such as dog shampoo) and $30,000 in fixed costs per year (eg. Rent). They currently charge $50 per dog groom. How many weeks would it take for the second groomer to pay off and make a profit?.
The number of weeks is going to take the new employee to start making a profit is 33 weeks.
Calculate the total costs:Costs related to hiring a new employee include
$20,000 (new sink) + $27 per hour + $15 per dog groom.Now, let's calculate the total costs per week
First 12 weeks
$20,000 (new sink) + $540 per week + $300 (grom 20 dogs) =$20,840
After 12 weeks
$20,000 (new sink) + $540 per week + $900 (grom 60 dogs) = $21,440
Calculate the total profit:
$35 per dogFirst 12 weeks: $700After 12 weeks: $2100Finally, calculate how much it will take this new employee to start getting a profit:
Profit during the first 12 weeks: $8,400Costs during the first 12 weeks: $20,840 + 10,080Total balance: $21,920 - $8,400 = $13,520Profit after the first twelve weeks
Profits per week: $2100Costs: $13,520 + $1,440 per weekAfter 20 weeks
Profits per week: $42,000Costs: $13,520 + $28,800 = $42,320Total balance: $42,320 - $42,000 = $300This means that by the end of week 32 the employee has almost paid all the money and it is expected by week 33 he can start to make a profit.
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What are the measures of the angles in triangle abc? m∠a ≈ 46. 2°, m∠b ≈ 43. 8°, m∠c ≈ 90° m∠a ≈ 73. 0°, m∠b ≈ 17. 0°, m∠c ≈ 90° m∠a ≈ 73. 7°, m∠b ≈ 16. 3°, m∠c ≈ 90° m∠a ≈ 74. 4°, m∠b ≈ 15. 6°, m∠c ≈ 90°.
The respective measure of the missing angles for each scenario of triangle abc are;
1) m∠c = 90°
2) m∠b = 17°
3) m∠a = 73°
4) m∠c = 90°
5) m∠b = 15.6°
6) m∠a = 74.4°
Angles in a TriangleWe know that sum of the angles in a triangle is 180°.
Thus in a triangle ABC;
∠a + ∠b + ∠c = 180°
1) m∠a ≈ 46. 2°, m∠b ≈ 43. 8°
Thus;
m∠c = 180 - (46.2 + 43.8)
m∠c = 90°
2) m∠c ≈ 90° m∠a ≈ 73.0°
Thus;
m∠b = 180 - (90 + 73)
m∠b = 17°
3) m∠b ≈ 17° m∠c ≈ 90°
Thus;
m∠a = 180 - (90 + 17)
m∠a = 73°
4) m∠a ≈ 73. 7°, m∠b ≈ 16. 3°
Thus;
m∠c = 180 - (16.3 + 73.7)
m∠c = 90°
5) m∠c ≈ 90° m∠a ≈ 74. 4°
Thus;
m∠b = 180 - (90 + 74.4)
m∠b = 15.6°
6) m∠b ≈ 15. 6°, m∠c ≈ 90°.
Thus;
m∠a = 180 - (90 + 15.6)
m∠a = 74.4°
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A glass of water left in the sun becomes warm. Marcus adds ice to the water to make it cool. What energy change occurs when ice is added to the warm drink?.
When ice is added to the water, there will be an energy flux from the water to the ice.
How does heat flux work?
When we have a system with two objects of different temperatures, to reach equilibrium, a flux of energy (heat flux) will go from the hotter object to the cooler one.
When we add ice to the warm water, the hotter object is the water and the cold one is the ice.
Then, energy flows from the water to the ice, in this way the temperature of the ice increases while the temperature of the water decreases.
Finally, both ice and water will have the same temperature (actually, probably the ice will melt into water).
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If you’re at the grocery store, how is checking out with one of these mobile payment methods different than paying with a traditional credit card?.
The difference between paying with mobile payment methods and paying with traditional credit card are:
A mobile phone with an internet connection is needed while paying with a mobile payment method.
Making payment with mobile payment method is faster than using a credit card.
What is a credit card?
A credit card is a card issued by a bank that allows the holder to access money from the bank's line of credit.
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What is the area of this polygon? enter your answer in the box. Units² 5-sided polygon on a coordinate plane with vertices f, n, s, c, w. Point f is at (negative 4, negative 2), point n is at (2, 4), point s is at (5, negative 2), point c is at (5, negative 4), and point w is at (negative 4, negative 4).
258
Explanation:
I took the test on K12 and it was right. Hope this helps!! :DD
Answer:
45
Explanation:
I just took the test. It's not 258.
Evaluate how passive/introvert deals with interpersonal conflict.
Answer:
Most introverts have a hidden strength of being great listeners. This skill can be an immense asset when it comes to resolving conflict where one should allow the other person to talk with minimal interference and rephrasing of what they have said to show understanding while expressing empathy for their feelings.
Last week, citizens' greener evanston sent a formal letter to the city requesting that it measure its carbon footprint and publicly disclose the amount of fertilizer and other carbon-emitting substances it is using on its public parkways and community parks. Citizens' greener evanston is an example of.
The citizens' greener evanston is an example of watchdog group.
What is a watchdog group?A watchdog group means a non-governmental groups whose main goals includes monitoring the state/federal level of governments and private organizations for fraud, waste, abuse, corruption, mismanagement etc
These watchdog group also informs the public when they detect actions that go against the public interest.
In conclusion, the citizens' greener evanston in this context is an example of watchdog group.
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Two weeks …………………. Not enough time to finish this work.
Two weeks is not enough time to finish this work.
What is a collective noun?A collective noun can be defined as a type of noun that is typically used as the name of a collection of things or group of people.
The examples of collective noun.Some examples of collective noun include the following:
JuryMoneyOrchestraFamilyTimeIn English literature, a collective noun generally take singular verb forms. Therefore, the most appropriate word to fill in the gap (blank) is a singular verb "is" rather than "are."
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The equation of line lm is 5x − y = −4. What is the equation of a line perpendicular to line lm in slope-intercept form that contains point (−3, 2)?.
Answer:
5y=-x+7
Explanation:
answer attached
hope this helps!
Select from the drop-down menu to correctly complete the sentence with parallel structure. Mary shelley was the author of frankenstein, the daughter of mary wollstonecraft,.
Answer:
and the wife of percy b shelley
Explanation:
just did the quiz
Answer: and the wife of percy bysshe shelley .
Explanation: i took the test !
The lowest frequency in the audible range is 20 hz.
The lowest frequency in the audible range is 20 hz is true.
West indian manatees are large aquatic mammals that live in rivers and near shore estuaries, especially in florida. They have two flexible front flippers with three or four toenails, similar to elephant toenails. Though they lack hind limbs, manatees have vestigial pelvic bones, as shown in the diagram. Manatee and elephant skeletons are shown side-by-side. The manatee, an aquatic animal, has a skeleton that has two large front limbs and two very tiny hind limb bones that do not form actual limbs. The elephant has four large limbs. Which of the following answer choices best describes how evidence of the manatee toenails and pelvic bones supports the scientific theory of evolution of these animals? the fact that manatees and elephants have toenails and pelvic bones suggests that their limbs evolved for similar use in similar environments. The fact that manatees lack hind legs, unlike elephants, suggests that manatees and elephants evolved toenails in parallel without any common ancestry. The existence of pelvic bones and toenails in manatees and elephants suggests that manatees and elephants evolved from the same land animal. The existence of pelvic bones and toenails in manatees and elephants suggests that these animals are evolving into similar animals.
Answer:
The existence of pelvic bones and toenails in manatees and elephants suggests that manatees and elephants evolved from the same land animal.
Explanation:
This is the correct answer on the test. Comment if it isn't so I can fix it. Good Luck!!!!
The presence of the pelvic bones and the toenails in the manatees and elephants suggests that they both evolved from the same land animal.
What is a manatee?Manatees are large fully aquatic and mostly herbivorous marine mammals. They are thus called sea cows. There are three types of living species that measure 4.0 meters.
They have padle-like flippers. As they are herbivorous they are inclosed connected to land mammals like the elephants.
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A 50. 0 kg child is riding in a 120. 0 kg bumper car at an amusement park. The child drives the bumper car at 4. 5 m/s head-on into the wall of the ride and rebounds at the speed. What is the magnitude of the change in momentum of the child and the bumper car?.
