The angle measured in degrees at which the 2nd-order bright fringe located is located is; 58.78°
What is the angle of the diffraction grating?Formula for diffraction grating is; dsinθ = mλ
where;
d = grating spacing = 1/(3000 lines per cm) = 1/3 × 10⁻⁵ m
m = order of fringe
λ = wavelength of light = 550 nm = 550 × 10⁻⁹ m.
Now, tanθ = x/D
where;
x = distance of nth order fringe from central maximum.
D = distance of screen from grating = 115 cm = 1.15 m
Now sinθ = d/mλ
θ is small and so we can approximate as sinθ ≅ tanθ
Thus;
d/mλ = x/D
for a second order bright fringe, m = 2.
d/2λ = x/D
x = dD/2λ
For a dark fringe, we have
d/(m + 1/2)λ = x'/D
where;
x' is the distance of the fringe from the central maximum.
For a second-order dark fringe, m = 2. Thus;
d/(2 + 1/2)λ = x'/D
d/(5/2)λ = x'/D
2d/5λ = x'/D
x' = 2dD/5λ
So, the distance between the 2nd order bright fringe and the 2nd dark fringe is; x" = dD/2λ - 2dD/5λ
x" = dD/10λ
Plugging in the values of the variables, we have;
x" = 1/3 × 10⁻⁵ m × 1.15 m/(10 × 550 × 10⁻⁹ m)
x" = 1.15/165 × 10² m
x" = 0.697 m
x'' = 69.7 cm
Thus;
tan θ = x/D = 115/69.7
θ = tan⁻¹(115/69.7)
θ = 58.78°
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When working to persuade an audience it is important to _____________. a. ask for limited amounts of change b. never ask for change c. ask for large changes immediately d. hint at desired changes
Answer:
it is important to d. hint at desire changes :)
Explanation:
There are 28 seats in the front row of a theater each successive row contains two more seats than th
Answer:
74
Explanation:
28+2*(24-1)= 74
Given:- There are 28 seats in the front row of theater
Number of rows=24
To find:- The number of seats in the last row.
Use the formula to find the 24th term of this sequence.
Also each successive row has two more seats. This difference is same for the whole theater.
So, this forms an arithmetic sequence.
a1=21
D=2
We need to find number of seats in 24th row; which is given by a24
We use the formula for it
The average height of sunflowers in a field is 64 in
This is from https://www.jiskha.com/questions/1578462/a-the-average-height-of-sunflowers-in-a-field-is-64-inches-with-a-standard-deviation-of
Answer:
a) The graph of a normal curve with a mean of 64" and a standard deviation of 3.5" is a bell-shaped curve with its
maximum value at x = 64.
Important points:
mean - 3 deviations: 64 - 3(3.5) = 64 - 10.5 = 53.5
mean - 2 deviations: 64 - 2(3.5) = 64 - 7 = 57
mean - 1 deviation: 64 - 3.5 = 60.5
mean: = 64
mean + 1 deviation: 64 + 3.5 = 67.5
mean + 2 deviations: 64 + 2(3.5) = 64 + 7 = 71
mean + 3 deviations: 64 + 3(3.5) = 64 + 10.5 = 74.5
b) If there are 3000 plants, approximately how many will be taller than 71"?
71" is 2 standard deviations above the mean. The region between two standard deviations below the mean and two standard deviations holds approximately 95% of the plants.
Therefore there will be approximately 5% of the plants divided equally between being taller than two standard
deviations above the mean and being shorter than two standard deviations below the mean. Thus, there will be
approximately 2.5% of the plants taller than 71": 0.025 x 3000 = 75 plants.
An angle that measures from the horizontal upward to an object is called the angle of
Answer:
here's your answer - the angle of elevation
Based on pythagorean identities, which equation is true?
Answer:
sin2 θ + cos2 θ = 1. This equation is called a Pythagorean Identity. It is true for all values of θ in the unit circle. Using this first Pythagorean Identity, we can find two additional Pythagorean Identities. This is the second Pythagorean Identity. This is the third Pythagorean Identity.
Explanation:
Answer:
sin2 θ + cos2 θ = 1.
Explanation:
Scientists observe several strata that are tilted at an angle. what most likely caused the tilting?
The cause of the tilting is a result of moving the strata after they are being deposited.
What are strata?Strata can be described as several layers of sediments, sand, and other materials that have been accumulated on the earth's surface, resulting in the development of sedimentary rocks. Strata have distinguishing characteristics that distinguish them from similar strata in the rock.
Strata in rocks can form and develop vertically or horizontally. Suppose the strata or layers of rocks appear tilted, this is due to the fact that the strata were moved after they were placed or deposited.
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Determine whether the points lie on a straight line.
Answer:
the points lie on a straight line thats true and valied
Which word from this excerpt could be used to argue that the narrator is unreliable? ""shaking"" suggests the narrator’s nervousness. ""struggle"" suggests the narrator’s weakness. ""indefinite"" suggests the narrator’s lack of knowledge. ""overpowered"" suggests the narrator’s lack of control.
Answer:
indefinite
Explanation:
ecause it unreliable
In a certain board game, a 12-sided number cube showing numbers 1–12 is rolled. if 4 such number cubes are rolled, what is the probability that at least 1 number cube will show a number 8 or larger? 0.0301 0.1158 0.8025 0.8842
Answer:
D. 0.8842
Explanation:
Bravo company will be departing on 1 september for exercise peace keeper. the exercise will be a joint effort with the army and the marine corps. both forces will meet in qatar to complete the exercise.
It will classified as "S", thus, the Secret concept will be used to determine the derivative classification of the new document.
What is the Security Classification Guide?The Security Classification Guide refers to the collection of comprehensive guidance about a specific program, system, operation or weapon system elements of information to be classified.
Here, the guide states the "mission personnel location, mission and location will be departing on one September for exercise peacekeeper".
Therefore, the stated word will be classified as "S", thus, the Secret concept will be used to determine the derivative classification of the new document.
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Which part of the triangular trade system represents
started in Great Britain
British traded goods for slaves from West Africa
then Caribbean to leave the slaves and pick up
tradeable goods to send back to Great Britain
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Read the mice scenario in order to answer the following question. write a valid hypothesis for this experiment.
The experimental scenario is not found here, but a valid hypothesis is based on testable and falsifiable assumptions.
What is a hypothesis?A hypothesis is a given explanation to understand some question that emerges by observing the real world.
A hypothesis must be verifiable, it means that we can confirm or reject the hypothesis by experimental and/or observation procedures.
A hypothesis must also be falsifiable, which means that it is possible to observe a negative result from the experimental procedure.
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Answer:The experimental scenario is not found here, but a valid hypothesis is based on testable and falsifiable assumptions.
Explanation:
What is the purpose of the turbines in coal-fired power plants brainly
Answer:
The role of steam turbines in a coal-fired power plant is to convert the energy from the hot steam generated by the boiler into rotation energy over several stages.
Read the passage. then describe what effect it has on the plot of the story.
If a cashier rings up 15 customers per hour how many customers can he ring up in eight hours
If a cashier rings up 15 customers per hour , then he would ring up 120 customers in eight hours
Given the above information,
We know that:
15 customers = 1per hour how
X = 8 hours
Then
= 15 x 8 hours
= 120 customers
Hence, If a cashier rings up 15 customers per hour , then he would ring up 120 customers in eight hours.
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Is this statement true or false? bob woodward and carl bernstein did not get the support of their newspaper, the washington post, and were fired for their investigative reporting. true false
Answer:
False
Explanation:
Answer:
false
Explanation:
i took the test
An organic disorder whose symptoms tend to develop gradually and worsen over time is __________.
Answer:
It should be cancer.
Explanation:
Caner typically has four stages, in which the symptoms become worse and worse as a person progresses through each stage. This is also an organic disorder/disease that most times leads to death.
Feel free to correct me, I hope this helped! :)
What are the central ideas about the conspirators in this speech by brutus? check all that apply. they are sad about their bloody deed. they are joyful about their bloody deed. they threaten to harm antony. they had to kill caesar to save rome. antony does not understand the reasons for the assassination.
Answer:
1, 4, 5
Explanation:
They are sad about their bloody deed.
x
x
They had to kill Caesar to save Rome.
Antony does not understand the reasons for the assassination.
What is meant by the term amiable, as it is used in the sentence? a) friendly b) lukewarm c) rude d) surly
Given the term "amiable" as it is used in the sentence, it meant "to be friendly"
The definition of each wordAmiable: This means to be Friendly, kind, sweet and gracious.Friendly: To be henerally warm, approachable and easy to relate with in character.Lukewarm: Between warm and cool. Not enthusiastic personRude: A person who is bad mannered.Surly: A Lordly, arrogant, Irritated, bad-tempered, unfriendly person.Therefore, what is meant by the term amiable, as it is used in the sentence is "friendly".
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What force does the absolute pressure of sea water at a depth of 9400 m exert on the outside of a circular submarine window of radius 44.0 cm? the density of sea water is 1025 kg/m^3. report your answer in newtons.
Answer:
(dagua de mar=1030 kg/m3; g = 9.8 m/s2)
Explanation:
espero te ayude
A short, witty statement that typically offers a surprising or satirical perspective on a topic is called a(n) epigram. paradox. understatement. pun.
Answer:
epigram
Explanation:
A short, witty statement that typically offers a surprising or satirical perspective on a topic is called an epigram. Thus, option A is correct.
What is an epigram?An epigram refers is a brief, interesting, memorable, and sometimes surprising or satirical statement. An epigram is a pithy saying or remark expressing an idea in a clever and amusing way.
An epigram is a succinct, engaging, memorable, and occasionally shocking or sarcastic statement. A clever and humorous way to express a thought is through a pithy saying or remark known as an epigram. This short clever sentence is called an epigram.
This is frequently seen in poetry but is also utilized in speeches, multimedia, and regular discussions. The statement typically contradicts itself or is paradoxical.
Therefore, Epigrams are typically shorter than other literary styles, which makes them easier for readers to remember.
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Sammy is classifying quadrilateral efgh. How can she use coordinate geometry to determine whether efgh is a parallelogram? e(0, 4), f(0, 7), g(1, 5), h(1, 2) sammy can use the distance formula to show that the opposite sides have equal slopes. Sammy can use the distance formula to show that all sides are equal. Sammy can use the slope formula to show that the opposite sides have equal slopes. Sammy can use the slope formula to show that all sides are equal
Answer: Sammy can use the slope formula to show that the opposite sides have equal slopes
Explanation: bc
Sammy can use coordinate geometry to determine whether efgh is a parallelogram by: C. using the slope formula to show that the opposite sides have equal slopes.
What is a parallelogram?A parallelogram refers to a type of quadrilateral and two-dimensional geometrical shape with two (2) equal and parallel opposite sides.
Based on the single opposite side pair theorem, the opposite sides of a parallelogram efgh are always equal and as such we have:
eh = fgef = hgIn conclusion, Sammy can use coordinate geometry to determine whether efgh is a parallelogram by using the slope formula to show that the opposite sides have equal slopes.
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How many and what type of solutions does the equation have? 5y2=18y−4
What is the value of x? 4 units 5 units 8 units 10 units
Answer:
The radius of sphere = 5 units
Explanation:
Answer:
5
Explanation:
trust
If christopher is on a 30-day billing cycle, what will his new beginning balance be after december? a. $509.91 b. $349.61 c. $353.44 d. $513.74
$513.74 will be the new beginning balance after December which is denoted as option D.
What is Balance?This is defined as the difference between the sum of the debit and credit entries in a financial period.
Balance on the card = Opening balance + Purchases - Payments
= 424.86 + 78.10 + 27.97 + 8.16 + 46.07 - 55.25 - 20
= $509.91
Opening balance in a 30-day billing cycle becomes:
= 509.91 x (1 + 13.13%/365 days x 30 days)
= $513.74
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Orange blue violet yellow and green wavelengths are absorbed
In the united states the official poverty rate is the percentage of residents who brainly
Poverty rate is the percentage of residents who earn a household income that is less than the threshold set by the government.
What is Poverty rate?This is defined as the ratio of people whose income fall below the poverty line in a country.
It csn also be referred to as the percentage of residents who earn a household income that is less than the threshold set by the government.
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What have you realized about yourself after drawing the kite brainly
The drawing of the kite with the strength helps to analyze the strength of the individual with the source that helps them to achieve the goal as the wind.
What is kite?A kite is a framework of the wood and paper with other materials such as cloth that has the ability to fly with the flow of the wind.
The analogy given with the kite has been the representation of the strength of the individuals at the diamonds of the kite. This helps in the analysis of the force that helps to drive one towards their goals.
The wind has been the force that acts as the addition to the strength to ease the journey to goal.
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Why does the time for 20 complete oscillations need to be taken
The short answer is to reduce the uncertainty in your measurement of the period. ... If you are using a stopwatch and manual timing- then your uncertainty in timing an interval is likeley to be about say 0.2 s . If the period of the pendulum is about 1 second then 0.2 s uncertainty corresponds to about 20% .
Explanation:
# Brainliest Bunch
A person learned spanish successfully. what is the probability that he was taught by method a?