A highway reconstruction project is being undertaken to reduce crash rates. the reconstruction project involves a major realignment of the highway such that a 60mi/h design speed is attained. at one point on the highway, a 720 ft equal-tangent crest vertical curve exists. measurements show that at 3+40 stations from the PVC, the vertical curve offset is 3.5 ft. assess the adequacy of this existing curve in light of the reconstruction design speed of 60 mi/h and if the existing curve is inadequate,compute a satisfactory curve length.
Answers
The length of the vertical curve in the adequacy of the given design for the speed of 60 mi/h is adequate.
The highway reconstruction project has:
Design speed attained (v) = 60 mi/hEqual tangent crest vertical curve exists at a point (L) = 720 ft.The stations from the PVC shown = 3+40x = 340
The vertical curve offset (Y) = 3.5 ft.The satisfactory curve length for the existing curve is computed by determining the absolute difference in the grade (A).
The absolute value of the difference in grade (A) can be calculated as:
\(A=\dfrac{200\;\times\;L\;\times\;Y}{x ^ 2}\\\\A = \dfrac{200 \times 720 \times 3.5}{340 ^ 2}\\A= 4.36\)
Based on the stopping sight distance (SSD), the minimum length of the vertical curve (\(L_{m}\)) can be calculated as:
\(L_{m} = KA\)
The value of K based on the American Association of State Highway for 60 mi/h is 150.6.
Computing the values in the formula of \(L_m\)
\(L_{m} = 151 \times 4.36 \\L_m=658.36 \;\rm ft\)
From the calculation, the minimum length of the vertical curve required to reduce crashes is 658.36ft.
Comparing the values of \(L_{m}\) and L of the existing curve:
\(L > L_m\)
In order to provide sufficient SSD, the required length of curve is 658.36 ft, while the available length is 720 ft that is larger than minimum.
Therefore, the provided length of the vertical curve is satisfactory for the reconstruction design speed of 60mi/h.
Learn more about satisfactory curve length on:
https://brainly.com/question/30574678
#SPJ4
Related Questions
Technician A says that charging system testing requires that the battery be at least 75% charged. Technician B says that a digital multimeter can not be used to test charging system voltage. Who is right
Answers
A digital multimeter can not be used to test charging system voltage,So Technician A and Technician B is not correct.
Neither technician is entirely correct.
Technician A is partially correct in that it is generally recommended to have a battery that is at least 75% charged before testing the charging system. However, this is not an absolute requirement, and some testing can still be performed with a battery that has a lower charge.
Technician B is incorrect in stating that a digital multimeter cannot be used to test charging system voltage. In fact, a digital multimeter is one of the most commonly used tools for this purpose, and it can provide accurate readings of the voltage output from the alternator.
Therefore, the correct answer is neither A nor B.
For such more questions on digital multimeter
https://brainly.com/question/29512413
#SPJ11
A loss in value caused by an undesirable or hazardous influence offsite is which type of depreciation?
Answers
External depreciation may be defined as a loss in value caused by an undesirable or hazardous influence offsite.
What is depreciation?Depreciation may be defined as a situation when the financial value of an acquisition declines over time due to exploitation, fray, and incision, or obsolescence.
External depreciation may also be referred to as "economic obsolescence". It causes a negative influence on the financial value gradually.
Therefore, it is well described above.
To learn more about Depreciation, refer to the link:
https://brainly.com/question/1203926
#SPJ1
Are you?
Yes
No
omg secret message
Answers
Answer:
are you wht
didn't understand the question
Answer:
Yes/No
Explanation:
NANI?!
Can be used to eliminate rubbing friction of wheel touching frame. 1.Traction 2.Thrust washer
Answers
Answer:
thrust washer
can be used to eliminate rubbing friction of wheel touching frame
Efficiency is illustrated by
Answers
Answer:
PPF
Explanation:
Production Possibilities Frontier
Answer:
The study of economics does not presume to tell a society what choice it should make along its production possibilities frontier. In a market-oriented economy with a democratic government, the choice will involve a mixture of decisions by individuals, firms, and government. However, economics can point out that some choices are unambiguously better than others. This observation is based on the idea of efficiency. In everyday parlance, efficiency refers to lack of waste. An inefficient washing machine operates at high cost, while an efficient washing machine operates at lower cost, because it’s not wasting water or energy. An inefficient organization operates with long delays and high costs, while an efficient organization is focused, meets deadlines, and performs within budget.
The production possibilities frontier can illustrate two kinds of efficiency: productive efficiency and allocative efficiency. Figure 1, below, illustrates these ideas using a production possibilities frontier between health care and education.
Explanation:
which of the following elements does not affect the strength and usefulness of concrete
Answers
The second phase of the writing process is when you draft your message. Choose the appropriate step in the drafting phase to complete the sentence. As you review your draft you find you need more information in a key area. This action should have been done in the ______ phase of the writing process. Revising is the third stage of the writing process. Identify the step in the revision process that corresponds with the following description. You read through your message and decide whether it achieves your purpose. o Proofreading o Evaluating o Editing Spending the appropriate amount of time on the writing process is important. Choose the correct answer to complete the following sentence about the writing process. Experts suggest that _________ of your time should be spent on the revising phase.
Answers
. This procedure need to have been followed throughout the writing step. According to experts, you should devote 50% of your work to the revision stage. Proofreading involves reading through your message to determine whether it accomplishes your objectives.
A crucial step in the publication process is proofreading. In this carefully, all of the text's contents are carefully read, and mistakes such formatting difficulties, spelling and grammatical errors, inconsistencies, punctuation errors, and other flaws are checked. No writing should ever be published without being proofread. Proofreading is a step in the writing revision process, depending on the circumstances. When the writing portion is complete, the content is transmitted for electronic printing, but not before a careful revision of the content is necessary for electronic printing. Proofreading entails carefully analysing your writing to identify and fix grammatical, spelling, and stylistic flaws as well as typographical faults.
Learn more about Proofreading from
brainly.com/question/20565625
#SPJ4
Engineer drawing:
How can i draw this? Any simple way?
Answers
1. It's very kind _______ you to help us. Thanks a lot. A. for B. to C. with D. of
Answers
Hope this helps☺️
What are two ways you can see that there is a smaller load going to the base of the transistor?
Answers
Answer:
Transistor switches can be used to switch a low voltage DC device (e.g. LED’s) ON or OFF by using a transistor in its saturated or cut-off state. Cut-off RegionHere the operating conditions of the transistor are zero input base current ( IB ), zero output collector current ( IC ) and maximum collector voltage ( VCE ) which results in a large depletion layer and no current flowing through the device. Therefore the transistor is switched “Fully-OFF”.
2.Saturation Region
Here the transistor will be biased so that the maximum amount of base current is applied, resulting in maximum collector current resulting in the minimum collector emitter voltage drop which results in the depletion layer being as small as possible and maximum current flowing through the transistor. Therefore the transistor is switched “Fully-ON”.
Explanation:
hope it helps
Which of the following devices is a simple machine?
A.
an engine
B.
a pulley
C.
a motor
D.
a bicycle
E.
a crane
Answers
Answer:
A PULLY
Explanation:
HAD THIS ONE THAT IS THE CORRECT ANWSER
Answer:
The answer is B. a pulley
Explanation:
I hope I answered your question:)
Describe the extent of their own responsibility. When to act on their own innitiative to find , clarify and evaluate information , and to whom they should report if they have problems they cannot resolve in the work place
Answers
Answer:
whatsthe question choices
There are 22 people in the classroom 12 are we
toals 5 are doing book work 4 are playing on their phones. 1 is sleeping. How
many people have to wear safety glasses?
A1
89
C 12
D 22
Answers
In which type of operations does lean production work best? check all that apply.
Answers
Lean production works best with standardized and repeatable processes. Lean production is a manufacturing technique that frequently aims to cut down on wait times for both suppliers' and customers' .
Lean manufacturing seeks to improve processes so that they use less energy, time, and resources overall. For some businesses than others, lean tools may be a better fit. But among the most helpful lean tools are Kaizen, 5S, Kanban, Value Stream Mapping, and Focus PDCA. Value, the value stream, flow, pull, and perfection are the five cornerstones of lean manufacturing, respectively. These are now the cornerstones on which lean is implemented. 1. Value: Value is established from the viewpoint of the customer and relates to the price point at which they are willing to purchase goods or services. Lean production is a manufacturing strategy that frequently aims to cut down on wait times for both suppliers' and customers' responses as well as those inside the manufacturing machine.
Learn more about manufacturing here:
https://brainly.com/question/13740503
#SPJ4
Suppose we are given three boxes, Box A contains 20 light bulbs, of which 10 are defective, Box B contains 15 light bulbs, of which 7 are defective and Box C contains 10 light bulbs, of which 5 are defective. We select a box at random and then draw a light bulb from that box at random. (a) What is the probability that the bulb is defective? (b) What is the probability that the bulb is good?
Answers
Answer:
0.49
0.51
Explanation:
Probability that bulb is defective :
Let :
b1 = box 1 ; b2 = box 2 ; b3 = box 3
d = defective
P(defective bulb) = (p(b1) * (d|b1)) + (p(b2) * p(d|b2)) + (p(b3) * p(d|b3))
P(defective bulb) = (1/3 * 10/20) + (1/3 * 7/15) + (1/3 * 5/10))
P(defective bulb) = 10/60 + 7/45 + 5/30
P(defective bulb) = 1/6 + 7/45 + 1/6 = 0.4888
= 0.49
P(bulb is good) = 1 - P(defective bulb) = 1 - 0.49 = 0.51
A civil engineer tested two different types (A and B) of a special reinforced concrete beam. He made nine test beams (five A 's and 4 B's) and measured the strength of each. From the following strength data (in coded units) he wants to decide whether there is any real difference between the two types.
Type A 67 80 106 83 89
Type B 45 71 87 53
Use Wilcoxon-Mann-Whitney test to answer this question.
Use unpaired t-test, assuming equal variances between groups, to answer this question.
Use unpaired t-test, assuming unequal variances between two groups, to answer this question.
Answers
The Wilcoxon-Mann-Whitney test is a non-parametric statistical test used to test the null hypothesis that two independent groups come from the same distribution. To carry out this test, we need to take the following steps:First, we rank the observations from lowest to highest.
We combine the ranks and then calculate the sum of the ranks for each group. We will then use these sums to calculate the test statistic (W). The sum of the ranks for group A is:67, 80, 106, 83, 89 = 5 + 6 + 9 + 7 + 8 = 35The sum of the ranks for group B is:45, 71, 87, 53 = 1 + 4 + 8 + 2 = 15The test statistic (W) is given by the equation:W = n1n2 + n1(n1 + 1)/2 - R1where n1 and n2 are the sample sizes of the two groups, R1 is the sum of the ranks for group A, and N is the total number of observations.
W = (5)(4) + (5)(6)/2 - 35 = 5The critical value for W is 1 at the 5% level of significance. Since W = 5, we can reject the null hypothesis that the two groups come from the same distribution.In order to use the t-test to compare the mean strengths of the two groups, we need to first check the normality assumption and equal variances. The normality assumption can be checked using a normal probability plot or a histogram.
The equal variance assumption can be checked using a boxplot or Levene's test.Assuming equal variances between groups, the null hypothesis is that the mean strengths of the two groups are equal.
The alternative hypothesis is that the mean strengths are different.Using the t-test, we obtain the following results:t = (mean A - mean B) / (s / sqrt(n))where s is the pooled standard deviation given by:s = sqrt(((n1 - 1)s1^2 + (n2 - 1)s2^2) / (n1 + n2 - 2))t = (mean A - mean B) / (s / sqrt(n)) = (85 - 64) / (14.11 / sqrt(9)) = 3.58The degrees of freedom for the t-test is given by df = n1 + n2 - 2 = 9 - 2 = 7The critical value for a two-tailed test with df = 7 at the 5% level of significance is 2.365. Since t = 3.58 > 2.365, we can reject the null hypothesis that the mean strengths of the two groups are equal.Therefore, we conclude that there is a real difference between the two types of special reinforced concrete beams.
Learn more about null hypothesis here,
https://brainly.com/question/30821298
#SPJ11
2. Because she has a Victim mindset and having low grade in her Math class, Julianna believes
O a. her low grades are the fault of her unfair teacher.
O b. she needs to take an easier class.
O c. that working with a tutor is the only way for her to pass the class.
O d. she can improve her grades if she studies more.
Answers
Because she has a Victim mindset and having low grade in her Math class, Julianna believes: A. her low grades are the fault of her unfair teacher.
What is a Victim mindset?A Victim mindset is also referred to as victim mentality and it can be defined as an acquired personality trait in which an individual tends to recognize and believe that the negative and unfair actions of others towards him or her, is responsible for the bad and unpleasant things that happens.
This ultimately implies that, an individual with a Victim mindset is prejudiced and strongly believes that every other person is against him or her, and as such these people are responsible for their failures.
Read more on Victim mindset here: https://brainly.com/question/17116209
#SPJ1
Which of the following is not a source of income?
Answers
Answer:
the answer is the "income tax"
Answer:
The correct answer would be:Income tax.
Explanation:
Hoped I helped!! :)
Is a dry park check a good way to check ball joints and control arm bushings for looseness? Yes or No?
Answers
Answer:yes
Explanation:
Because the
how does the function of a generator relate to the function of a motor
Answers
The function of a generator and the function of a motor are closely related as they both involve the conversion of energy.
A generator is a device that converts mechanical energy into electrical energy. It operates by utilizing the principle of electromagnetic induction. When a generator is driven by a mechanical power source, such as an engine or turbine, it spins a rotor within a magnetic field. This rotation induces an electromotive force (EMF) in the conductors of the rotor, generating electrical energy. In other words, a generator converts mechanical energy into electrical energy.
On the other hand, a motor performs the opposite function. It converts electrical energy into mechanical energy. Motors use the phenomenon of electromagnetic induction as well, but in reverse. When a current is applied to the conductors of a motor's rotor within a magnetic field, it experiences a force that causes the rotor to rotate. This rotational motion is then used to drive the mechanical load connected to the motor. In summary, a motor converts electrical energy into mechanical energy.
In essence, generators and motors are complementary devices that operate using similar principles of electromagnetic induction. While generators produce electrical energy from mechanical energy, motors utilize electrical energy to generate mechanical motion. The ability to convert energy between electrical and mechanical forms is crucial in various applications, ranging from power generation to industrial machinery and transportation systems.
To learn more about induction Click Here: brainly.com/question/32376115
#SPJ11
Consider the 90Sr source and its decay chain from problem #6. You want to build a shield for this source and know that it and its daughter produce some high energy beta particles and moderate energy gamma rays. a. Use the NIST Estar database to find the CSDA range [in cm) and radiation yield for the primary beta particles in this problem assuming a copper and a lead shield. b. Based on your results in part a, explain which material is better for shielding these beta particles.
Answers
a. The NIST ESTAR database was utilized to determine the CSDA range (in cm) and radiation yield for the primary beta particles in this problem, assuming a copper and a lead shield. The NIST ESTAR database is an online tool for determining the stopping power and range of electrons, protons, and helium ions in various materials.
For copper, the CSDA range is 0.60 cm, and the radiation yield is 0.59. For lead, the CSDA range is 1.39 cm, and the radiation yield is 0.29.
b. Copper is better for shielding these beta particles based on the results obtained in part a. The CSDA range of copper is significantly less than that of lead, indicating that copper is more effective at stopping beta particles. Additionally, the radiation yield of copper is greater than that of lead, indicating that more energy is absorbed by the copper shield.
To know more about radiation visit:
https://brainly.com/question/31106159
#SPJ11
How would I get this python code to run correctly? it's not working.
Answers
Answer:
See Explanation
Explanation:
This question requires more information because you didn't state what the program is expected to do.
Reading through the program, I can assume that you want to first print all movie titles then prompt the user for a number and then print the move title in that location.
So, the correction is as follows:
Rewrite the first line of the program i.e. movie_titles = ["The grinch......."]
for each_movie_titles in movie_titles:
print(each_movie_titles)
usernum = int(input("Number between 0 and 9 [inclusive]: "))
if usernum<10 and usernum>=0:
print(movie_titles[usernum])
Line by line explanation
This iterates through the movie_titles list
for each_movie_titles in movie_titles:
This prints each movie title
print(each_movie_titles)
This prompts the user for a number between 0 and 9
usernum = int(input("Number between 0 and 9 [inclusive]: "))
This checks for valid range
if usernum<10 and usernum>=0:
If number is valid, this prints the movie title in that location
print(movie_titles[usernum])
If an individual is caught smoking in high school, what aspect of life would the differential association theorist be interested in order to understand how that person started smoking?
Answers
The aspect of life that would the differential association theorist be interested in order to understand how that person started smoking is option a: smoking habits of peers, family, and friends.
Is smoking a habit or a lifestyle?The act of Smoking is known to be a hard habit that is said to be difficult to break for a lot of reasons.
Note that it is one where a person is said to be only nicotine addictive, but smokers are said to be the smoke multiple times a day.
Therefore, The aspect of life that would the differential association theorist be interested in order to understand how that person started smoking is option a: smoking habits of peers, family, and friends
Learn more about smoking habits from
https://brainly.com/question/15967133
#SPJ1
See full question below
If an individual is caught smoking in high school, what direction would a differential association theorist go in examining how that person started smoking?
smoking habits of peers, friends, and family
strain caused by society's structure that leads to smoking
the student's self-control
how this student was identified when everyone is equally susceptible
2 points) what is the eeg frequency in each section? trace 1 sectionsfrequency (hz)trace 2 sectionsfrequency (hz) left, 0-1sleft, 0-1s left, 1-2sleft, 1-2s left, 2-3sleft, 2-3s right, 0-1sright, 0-1s right, 1-2sright, 1-2s right, 2-3sright, 2-3s
Answers
The waveforms delta (0.5 to 4Hz), theta (4 to 7Hz), alpha (8 to 12Hz), sigma (12 to 16Hz), and beta are among the most frequently researched waveforms (13 to 30Hz).
What are the EEG's frequency ranges?EEG frequency patterns can be divided into four categories: beta (14–30 Hz), alpha (8–13 Hz), theta (4–7 Hz), and delta (1-3 Hz). In general, when the frequency drops, the EEG's amplitude rises. Each of the four EEG frequencies corresponds to a distinct degree of cerebral cortex arousal.
How can you determine an EEG's frequency?The frequency is then calculated by taking I and dividing it by the duration, which in this case results in a 5Hz wave. the amount of analogue millimetres in a second.
To know more about waveforms visit:-
https://brainly.com/question/30054547
#SPJ1
in the context of a 1-bit full adder with a, b and cin inputs, the logic expression for 'kill' signal is given as:
Answers
A full adder is used to perform arithmetic operations on two binary numbers. It consists of three inputs, namely a, b, and c, which represent the two binary numbers and the carry from the previous bit, respectively.
The output of the full adder is the sum of the two binary numbers represented by a and b, and a carry bit that is propagated to the next bit position. A 1-bit full adder is an adder that operates on two 1-bit binary numbers and generates a sum and a carry. The logic expression for the kill signal in the context of a 1-bit full adder with a, b, and cin inputs is given as:Kill = (a and b and cin)The kill signal is used to disable the output of the full adder when it is not needed. When the kill signal is high, the full adder does not generate a sum or a carry.
This reduces the power consumption of the circuit by preventing unnecessary switching of the output signals. The kill signal is generated by ANDing the a, b, and cin inputs together. If all three inputs are high, the kill signal is high, and the output of the full adder is disabled. Otherwise, the kill signal is low, and the full adder operates normally.
Learn more about full adder: https://brainly.com/question/29821668
#SPJ11
Problem 2. 2 .The particle P moves along the curved slot, a portion of which is shown. Its distance in meters measured along the slot is given by s = t^2/ where t is in seconds. The particle is at A when t = 2.00s and at B when t = 2.20s. Determine the magnitude a_avg of the average acceleration of P between A and B. Also express the acceleration as a vector a_avg using unit vectors i and j.
Answers
Magnitude of average acceleration \(a_{avg}\)=2.75 units
Average acceleration \(a_{avg}=\) \(2.265 i- 1.58j\)
We're given that \(s=\frac{t^2}{4}\)
And partice is at A at t=2 s and at B at t= 2.2s
Instantaneous velocity \(\frac{ds}{dt} =\frac{t}{2}\)
Velocity at A (\(V_{a}\)) at 2s = \(\frac{t}{2}\) or \(\frac{t}{2}Cos \frac{\pi}{3} i+ \frac{t}{2}Sin \frac{\pi}{3}j=\frac{i+\sqrt{3} j}{2}\)
Velocity at B (\(V_{b}\)) at 2.2s =\(\frac{t}{2}\) or \(\frac{t}{2}Cos \frac{\pi}{6} i+ \frac{t}{2}Sin \frac{\pi}{6}j=\frac{\sqrt{3}i+j }{2}\)
Average acceleration = \(\frac{V_{b}-V{a}}{t}\) =\(2.265 i- 1.58j\)
magnitude = \(\sqrt{(2.265)^2- (1.58)^2}\) = \(2.75\)
Learn more about Acceleration here:
https://brainly.com/question/460763
#SPJ10
What is the correct order of steps in the scientific method
Answers
Answer:
1) Make a hypothesis, about what u think will happen if you do something
2) conduct the experiment
3) analyze and see what happens
4) do it several more times and compare ur answers
5) make a conclusion from ur answers
6) celebrate bc u done
what is a lintel? question 7 options: upright beam beam used to span an opening a form of volcanic stone a type of marble
Answers
Answer: A lintel is a type of beam that spans openings such as portals, doors, windows and fireplaces. It can be a decorative architectural element, or a combined ornamented structural item
The ___ outlines the problem in clear terms.
Answers
Answer: Problem Statement
Explanation:
When going about designing a new product or an improvement to an existing product, it is important to state the problem in a clear and concise way so that the designers know precisely what they are working towards.
This is where a Problem statement comes in. It states the problem in a concise manner and juxtaposes the current shortcomings of the current system against what the system should ideally be in such a way that even though the solution is clear, it is not so precise that it makes the designers narrow-minded.
I need a word problem for y=2x
Answers
The word problem for y = 2x is as follows.
"If y is the number of cakes produced by using 2 amounts of backing ingredients (x), find the number of cakes produced if x is 25."
What is a word problem?A word problem is a mathematical exercise in scientific education in which substantial background information about the subject is conveyed in regular English rather than mathematical notation.
A word problem in mathematics is a math question expressed as one or more sentences that demand students to apply their arithmetic skills to a real-life setting.
This implies that in order to understand the word problem, students must be conversant with the terminology linked with the mathematical symbols to which they are used.
Learn more about word problems:
https://brainly.com/question/2610134
#SPJ1