The spring undergoes a change in potential energy of
1/2 k (2.9 m)² - 1/2 k (1.4 m)² = 87 J
Solve for k :
k ((2.9 m)² - (1.4 m)²) = 174 J
k = (174 J) / ((2.9 m)² - (1.4 m)²)
k ≈ 27 N/m
You have been injured in the laboratory (cut, burned, etc.). First you should
Answer: tell a teacher or go to school nurse or call a parent.
Explanation:
Promotion of learning and respect for teachers are among the traditional values of the vietnamese.
The Vietnamese believe that One of the traditional values of the Vietnamese people is the promotion of learning and the respect for teachers.
As Vietnam’s educational culture was sparked by Chinese influence, the roots of education come from the country’s belief in Confucianism.
The Vietnamese believe that One of the traditional values of the Vietnamese people is the promotion of learning and the respect for teachers. In the Feudal and Colonial periods, teacher’s were seen to have more importance than parents; their position was “only lower than the king”.
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Which process is involved in growing crops? irrigation transportation recreation condensation.
Answer: irrigation
Explanation:
just took test on edg
Irrigation process is involved in growing crops It helps to grow agricultural crops, maintenance of landscape, re-vegetation of disturbed and dry soil and during low rainfall.
What is irrigation?Irrigation is the agricultural process of applying controlled amounts of water to land to assist in the production of crops. There are various types of irrigation- sprinkler irrigation, surface irrigation, drip irrigation, and manual irrigation.
It helps in nutritious growth of plants. The process by which water is brought to an area for use in growing crops is called irrigation. Irrigation is the process of artificial application of the desired amounts of water to the growing crops at required intervals. It helps to grow agricultural crops, maintenance of landscape, re-vegetation of disturbed and dry soil and during low rainfall.
Therefore,Irrigation process is involved in growing crops It helps to grow agricultural crops, maintenance of landscape, re-vegetation of disturbed and dry soil and during low rainfall.
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You wish to earn a return of 13% on each of two stocks, x and y. Stock x is expected to pay a dividend of $3 in the upcoming year while stock y is expected to pay a dividend of $4 in the upcoming year. The expected growth rate of dividends for both stocks is 7%. The intrinsic value of stock x.
Based on the information given, the intrinsic value of stock x will be less than the intrinsic value of stock Y.
Based on the information given above, the intrinsic value of Stock X will be calculated thus:
D1 = Dividend in next year = $3
g = growth rate = 7%
r = = 13%
Therefore, intrinsic value of Stock X will be:
= D1 / (r-g)
= 3 / (13% - 7%)
= 3/6%
= 3 / 0.06
= $50
Therefore, the intrinsic value of stock X is $50.
Intrinsic value of Stock Y will be calculated thus:
D1 = $4
g = 7%
r = 13%
Intrinsic value of Stock Y will be:
= D1 / (r-g)
= 4 / (13% - 7%)
= 4/6%
= 4 / 0.06
= 66.67
Intrinsic value of Stock Y is $66.67
Therefore, the intrinsic value of Stock X will be less than the intrinsic value of Stock Y.
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Which of the following lists includes only organisms composed of cells?.
Answer:
last one
Explanation:
protists, bacteria, plants
A piece of equipment costs $30,000, and is expected to generate $8,500 of annual cash revenues and $1,500 of annual cash expenses. The disposal value at the end of the estimated 10-year life is $3,000. Ignoring income taxes, the payback period is:.
Answer:
C. 4.29 years
Explanation:
The computation of the payback period is shown below:
Payback period = Initial investment of the equipment ÷ Cash flows
where,
Initial investment = $30,000
And, the cash flows is
= $8,500 - $1,500
= $7,000
So the payback period is
= $30,000 ÷ $7,000
= 4.29 years
By dividing the initial investment by the cash flows we can get the payback period and the same is applied above.
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A student wants to prove that the base angles of an isosceles triangle are congruent.
There are different kinds of triangles. The options that could be used as part of the proof that B = C are;
≅ because of the Symmetric Property≅ because of the definition of a midpoint
≅ because of the definition of an isosceles triangle
∠ ≅ ∠ because corresponding parts of congruent triangles are congruent.
Isosceles triangles is known to have at least two congruent sides and also at least two congruent angles.
The congruent sides is referred to as legs that create the vertex angle. The other two congruent angles are known to be the base angles.
See full question below (using the image attached)
A student wants to prove that the base angles of an isosceles triangle are congruent. The student draws isosceles triangle ABC with base angles B and C.
Point M is drawn as the midpoint of BC.
Which of the following could be used as part of the proof that B = C? Select all that apply
Which best describes the relationship between respiratory and circulatory system.
Answer:
The respiratory system transports oxygen to cells, while the circulatory system provides oxygen for cells.
Which of these best describes the point of washington in this excerpt.
Answer:
awnser choice B
Explanation:
B
Which of the following best characterizes the french revolution brainly.
Answer:
Violent
Explanation:
best characterized the French Revolution
What type of matter and energy make up the geosphere?.
Answer:
rocks and minerals make up geosphere
Explanation:
Answer:
rocks and minerals
Explanation:
geo means earth ..earths geosphere is a portion of earth that includes rocks and minerals.it starts at the ground and extends all the way diwn to earth's core
What is silhak? a. The most sacred of all korean instruments b. A truly korean style that emphasizes the study of things korean c. A traditional korean male hat d. The korean word for picnic.
Answer: B
Explanation:
please correct me if I am wrong
Answer:
The answer is B
Explanation:
I got it right on my test have a lovely day!
What is the frequency of a sound source that produces the same wavelength in 20∘c air?.
Based on the standard formula and data in the question, the frequency of a sound source that produces the same wavelength in 20∘c air is "115.87Hz."
What is the frequency of a sound source?The frequency of a sound source is the quantity of waves that move through a point per unit of time.
Typically, a sound wave arises from a source vibrating at a frequency f, propagates at v, and has a wavelength λ.
Therefore, in this case, we have
Velocity (v) of sound in air = 343 m/s
Wavelength (λ) = 2.96 m
Frequency (f) =?
f = v ÷ λ
f = 3.43m/s ÷ 2.96m
=> 115.87Hz
Hence, in this case, it is concluded that the correct answer is 115.87Hz.
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According to the big bang theory, what happens if you reverse the galaxy motion and go back in time?.
The reverse of the Big Bang Theory simply means the scenario where the expansion of the universe reverses. Known as well as the "Big Crunch". This event supposedly would lead to the collapse of the universe.
When it falls under this, the cosmic scale then reaches 0. Subsequently, everything would become condensed into a very dense point.
If you suspect information has been improperly or unnecessarily classified what should you do first.
If you suspect that an information has been improperly or unnecessarily classified, the first action you should take is to: Discuss your concerns with your security manager or supervisor.
An information can be defined as a data or group of data that has been processed and it is available for beneficial use by an end user.
Generally, there are two (2) main categories of information and these include:
Classified information: it contains sensitive information and as such, it is restricted to authorized users only.Unclassified information: it can be accessed and used by everyone (general public).For security purposes, if you suspect that an information has been improperly or unnecessarily classified, the first action you should take is to immediately discuss your concerns with your security manager or supervisor.
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In order to form methane, one carbon atom shares electrons with four hydrogen atoms. Which of these best describes why methane would form in nature?.
Select the correct answer from each drop-down menu. Scientists that reducing the consumption of substances that emit harmful gases would reduce pollution. Jonathan was irritated by the noise made by the loud musical procession on the street. The poor farmer was in for a pleasant surprise when he stumbled upon a pot of gold buried in his yard.
1. Scientists conjectured that reducing the consumption of substances that emit harmful gases would reduce pollution.
2. Jonathan was irritated by the incessant noise made by the loud musical procession on the street.
3. The poor farmer was in for a pleasant surprise when he fortuitously stumbled upon a pot of gold buried in his yard.
In this exercise, you're required to fill in the gap (blank) in the given sentences with the most appropriate word as follows:
1. Scientists conjectured that reducing the consumption of substances that emit harmful gases would reduce pollution.
A conjecture is a noun and it can be defined as an opinion or conclusion that is formed without sufficient evidence, fact or proof. Thus, a conjecture is formed on on the basis of an inconclusive or incomplete information.2. Jonathan was irritated by the incessant noise made by the loud musical procession on the street.
Incessant is an adjective and it can be defined as an unpleasant thing that happens continuously without interruption. Thus, it is a word that is used to describe something that is ceaseless, unending or happens without stopping.3. The poor farmer was in for a pleasant surprise when he fortuitously stumbled upon a pot of gold buried in his yard.
Fortuitously is an adverb and it is used it describe a situation or an event that happened by chance or accidentally rather than happening intentionally.Read more on fortuitously here: https://brainly.com/question/2601859
Answer:
1. Scientists conjectured that reducing the consumption of substances that emit harmful gases would reduce pollution.
2. Jonathan was irritated by the incessant noise made by the loud musical procession on the street.
3. The poor farmer was in for a pleasant surprise when he fortuitously stumbled upon a pot of gold buried in his yard.
Explanation:
Raymond bought a car for $40, 000. He took a $20,000 loan from a bank at an interest rate of 15% per year for a 3-year period. What is the total amount (interest and loan) that he would have to pay the bank at the end of 3 years?.
Answer:
20000*(1+15%)³=30417.5
Explanation:
The number $40000 is irrelevant. Don't be disturbed!
This is a typical compound interest question. Use the compound interest formula: S=p(1+i)ⁿ
S for sum, p for principal balance, i for interest rate, n for the number of years or times
According to the collision theory, what are two of the conditions that are needed for a reaction to occur?.
Answer:
molecules must collide with sufficient energy know as activation energy so that the chemical bonds would break
If a fish possesses the ability to produce copious amounts of urine and the ability to move ions via active transport across the gills, what would be the expected habitat of the fish?.
Answer:
Their StrengthExplanation:
Where's the choices my answer is their Strength I thinkThe nitrogen atoms in a molecule of n2 share a total of.
Answer: 6!!!
Explanation:
Which characteristics belong to all members of the domain eukarya.
Answer:
Characteristics that belong to all members of the domain Eukarya are:
a cell membranenucleus or nucleimembrane-bound organellesExplanation:
Eukaryota consists of organisms that have a true nucleus and structures called organelles that are surrounded with by membranes.
The presence of nucleus which contains genetic material and is enclosed by a membrane sets them apart from prokaryotic cells.
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Answer:a cell membrane
nucleus or nuclei
membrane-bound organelles
Explanation: i looked at it
The graph of y=f(x) is shown above. Which of the following could be the graph of y=f′′(x)?.
The true statement about the graph of f(x) is [tex]f(x) = \frac 35x + 3[/tex]
The graph of f(x) is a straight line that passes through the points (-5,0) and (0,3).
Start by calculating the slope (m)
[tex]m = \frac{y_2 - y_1}{x_2 -x_1}[/tex]
So, we have:
[tex]m = \frac{3-0}{0--5}[/tex]
Simplify
[tex]m = \frac{3}{5}[/tex]
The equation of the line is then calculated as:
[tex]y = m(x -x_1) + y_1[/tex]
This gives
[tex]y = \frac 35(x -0) + 3[/tex]
Open bracket
[tex]y = \frac 35x + 3[/tex]
Express y as a function of x
[tex]f(x) = \frac 35x + 3[/tex]
Hence, the true statement about the graph of f(x) is [tex]f(x) = \frac 35x + 3[/tex]
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Unknown element x has four energy levels, five valence electrons, and is a metalloid. What is element x?.
Answer:
I think the answer is Silicon.
Explanation:
Hope this helps.
You have a worksheet in excel that will print as 10 pages.
Considering the situation described above, to ensure that the header row is printed at the top of each page, the user should start by "going to Page Layout tab."
The other steps to ensure that the header row is printed at the top of all the 10 pages include the following steps:
Click page set up under page set up a group.Go to print titles.Click Rows to repeat at top.Select the cell that contains the text you want to repeat.Click OK.Hence, in this case, it is concluded that to print the header row is to click on the "Page Layout Tab."
The full question is:
You have a worksheet in excel that will print as 10 pages. how can you ensure that the header row is printed at the top of each page?
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In order to clear out room for new merchandise, james decided to mark down some of the items for sale in his electronics store. He marked down dvd players by 36%, and he marked down stereo tuners by 22%. If dvd players cost $41. 60 after the markdown and stereo tuners cost $69. 42 after the markdown, which item’s price was reduced by more, and by how many dollars more was it reduced? round all dollar values to the nearest cent. A. The dvd player’s price was reduced by $3. 82 more than the stereo tuner’s price. B. The dvd player’s price was reduced by $27. 82 more than the stereo tuner’s price. C. The stereo tuner’s price was reduced by $0. 29 more than the dvd player’s price. D. The stereo tuner’s price was reduced by $27. 53 more than the dvd player’s price.
The dvd player’s price was reduced by $3. 82 more than the stereo tuner’s price.
Let the cost price of dvd players be D.Let the cost price of stereo tuners be S.Given the following data:
Markdown for dvd player = 36%Markdown for stereo tuner = 22%Markdown cost for dvd player = $41.60Markdown cost for stereo tuner = $69.42To determine which item’s price was reduced by more, and by how many dollars:
First of all, we would calculate the cost price of each item.
For dvd players:
Note: You'll pay 64% since it was markdown by 36%.
[tex]\frac{64}{100} \times D = 41.60\\\\64D=41.60 \times 100\\\\64D=4160\\\\D=\frac{4160}{64}[/tex]
D = $65
Reduction: Dvd player = [tex]65-41. 60=[/tex] $23.40
For stereo tuners:
Note: You'll pay 78% since it was markdown by 22%.
[tex]\frac{78}{100} \times S = 69.42\\\\78S=69.42 \times 100\\\\78S=6942\\\\S=\frac{6942}{78}[/tex]
D = $89
Reduction: Stereo tuner = [tex]89-69. 42=[/tex] $19.58
Now, we can calculate the difference in reduction of the cost price of both items:
[tex]Difference = 23.4 -19.58[/tex]
Difference = $3.82
Therefore, the price of the dvd players was reduced by $3. 82 more than the price of the stereo tuners.
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Which of the following about a contour line is false?.
The statement from the given options that is false about contour lines is;
Option B; Contour lines can cross.
The missing options are;
A. Contour lines form a "V" that points upstream.
B. Contour lines can cross.
C. Contour lines connect points of equal elevation.
D. Concentric contour lines may indicate a hill.
To answer the question, we need to first understand what contour lines are.
Contour lines are lines that are used on topographic maps to show elevations, landform shapes, and slope stiffness. It can also be used to show population density and average income.
An example of a contour lines are Isotherms which means lines of equal temperature.
Now, contour lines do not cross each other but instead will form a v-shape.
Looking at the options, the only one that doesn't apply to contour lines is Option B
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In the chairman's white paper, "mission command" (2012), "_____ equips decision-makers at all levels with the insight and foresight to make effective decisions, to manage associated risks, and to consider second and subsequent order effects. ".
In the chairman's white paper, "mission command" (2012), it is required understanding equips decision-makers at all levels. It involves making effective decisions and managing associated risks.
M.E. Dempsey, who is Chairman of the Joint Chiefs of Staff, published the Mission Command White Paper in 2012.
This publication indicates that mission command represents the main method by which joint forces should exercise command and control.
In this paper, Dempsey states that mission command can be considered as a constant effort to understand and then direct effectively the achievements of intent.
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Why does nasa publish a different star finder every month?.
Answer:
We see different views of the Universe from where we live as Earth makes its yearly trip around the solar system. That is why we have a different Star Finder for each month, as different constellations come into view.
When you add hot water to cold water the cold water warms up because of
Okay this is like Science or Chemistery, probably Sience
Answer:
So say you have some cold water running, if you turn on the hot water than the hot water will start coming too. The energy of the hot water will start warming up the cold water.
Explanation:
I don't really know, just tossing reasonable stuff out here.
