I need a description of a train station. Urgent. Thanks a lot
Answer:
The entire place was dark and cold as the train whooshed by. This place was nothing like Platform 9 and 3/4. The rain was loud on the roof of the station, but you could still hear the faint noises of a violin. "20 pence for requests" read a sign from a man who's just trying to get by.
Explanation:
hope this helps:)
a 230v shunt motor delivers 30hp at the shaft at 1120rpm. if the motor has an efficiency of 87% at this load, determine: the total input power the line current
Shunt motors are direct current motors that have parallel windings with identical voltage. The total input power of the shunt motor is 25.724 kW and the line current will be 111.843 A.
What are input power and line current?Total input power is the ratio of the output power and the efficiency, while the line current is the proportion of input power to an input voltage.
The total input power (total IP) is calculated as:
Given,
Output power (OP) = 30 hp
Efficiency = 0.87
Substituting values:
[tex]\begin{aligned}\text{Total IP} &= \rm \dfrac {OP}{efficiency}\\\\&= \dfrac {30 \times 746 \rm \;watts}{0.87}\\\\&= 25.724 \;\rm kW \end {aligned}[/tex]
Line current is calculated as:
Given,
Input power (IP) = 25.724 kW
Input voltage (IV) = 230 Volt
Solving for line current:
[tex]\begin{aligned} \text{Line current} &= \rm \dfrac{IP}{IV}\\\\&= \dfrac{25.724 \times 10^{3}}{230}\\\\&= 111.843 \;\rm A \end{aligned}[/tex]
Therefore, the total input power of the shunt is 25.724 kW, and the line current is 111.843 A.
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Engine measurement is being discussed. technician a says the bore is the distance the piston moves within the cylinder. technician b says the stroke is the diameter of the cylinder. who is correct?
Answer:
Bore is the diameter of the cylinder.
Explanation:
Stroke is the distance the piston moves up and down in the cylinder.
i wouldn't listen to technician A anymore.
A shaft encoder is mounted on a 50 mm radius tracking wheel to monitor linear displacement. If the encoder produces 400 pulses per revolution. What is the linear displacement in mm per pulse?
The linear displacement in mm per pulse is gotten as; 254.64 mm per pulse
How to Calculate Linear Displacement?Circumference of a circle is;
C = 2πr
We have;
Radius; r = 50 mm = 0.05 m
Thus;
C = 2π * 0.05
C = 0.3142 m
Angular displacement = 0.2/0.3412
Angular displacement = 0.6366
Formula for linear displacement is;
Linear Displacement = angular displacement * number of pulses per revolution
Linear Displacement = 0.6366 × 400
Linear displacement = 254.64 mm per pulse
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Consider the function f(n) = n
2 + 1000n, and do the following:
a) Prove that f(n) = O(n
3
) by finding a c0 and n0 such that f(n) ≤ c0 · n
3
for n > n0.
b) Prove that f(n) = O(n
2
) by finding a c1 and n1 such that f(n) ≤ c1 · n
2
for n > n1.
c) Prove that f(n) = Ω(n
2
) by finding a c2 and n2 such that f(n) ≥ c2 · n
2
for n > n2.
d) Prove that f(n) = Θ(n
2
) by finding a c3, c
′
3
, and n3 such that c3 · n
2 ≤ f(n) ≤ c
′
3
· n
2
for n > n3
get off this
Explanation:
An 8cm water jet with a velocity of 25m/s impinges on a single vane in same direction at a velocity of 20m/s. If β2 = 160o and friction losses over the vane are such that v2 = 0.8v1, calculate the force exerted by water on the vane, and its direction.
a. An 8cm water jet with a velocity of 25m/s impinges on a single vane in same direction at a velocity of 20m/s. If B2 = 1600 and friction losses over the vane are such that v2 = 0.8v1, calculate the force exerted by water on the vane, and its direction. (14 Marks) b. A closed vertical cylinder 400mm in diameter and 500mm high is filled with oil of relative density 0.9 to a depth of 340 mm, the remaining volume containing air at atmospheric pressure. The cylinder is rotated around its vertical axis at such a speed that oil just begins to uncover the base. Calculate the speed of rotation for this condition. (8 Marks) c. A point A on the free surface of a free vortex is at radius 250 mm and height 180mm above datum. If a free surface at a distance from the axis of the vortex, which is sufficient for its effects to be negligible, is 220mm above datum, calculate the height above datum of a point B on the free surface
Discuss the microstrucral transformation of eutectic reaction, hypo-eutecticand hyper eutectic. Including temperature, reactions and microstrucral development/phases(draw diagrams)
Answer:
where do i draw
Explanation:
Write a Person class with a constructor that accepts the following details:
1. First name
2. Middle name
3. Last name
4. Date of birth (entered in this pattern 22-02-2000)
5. Gender (male, female)
6. Identity number (private attribute)
7. Mobile number (if any)
Provide a method getAge that calculates the persons' age from his date of birth.
If the user provided his mobile number you have to check if it is a valid number with the pattern 999-
999-9999 if not, show him an error message and do not save the number Provide a method getAge that calculates the persons' age from his date of birth.
If the user provided his mobile number you have to check if it is a valid number with the pattern 999-
999-9999 if not, show him an error message and do not save the numberWrite two classes called Student and College that represents a student and a college in a university. College class: - The constructor of the College class should accept the name of the college and the capacity, and you have to generate a shortcut of the name by taking the first character of each word in the name (e.g., Information Technology becomes IT). - Provide a method called updateTotalStudents that increments the total number of students at this college. You have to check if the total number is in the range of the capacity, if not you have to present a suitable message for the student and let him/her choose another college. You can set the capacity as 3 students for testing purposes. - Provide a method called getInfo that prints the information about specific college in a wellorganized appearance.
The person class is an illustration of constructors;
In computer programs, constructors are automatically called when the object of a class is created
The program in C++The class and the constructor program written in C++ programming language is as follows:
int main(){
string fname, lname,dob,idno,mobileno;
cin>>lname; cin>>fname; cin>>dob; cin>>idno; cin>>mobileno;
Person c(fname,lname,dob,idno,mobileno);
if(mobileno.length() == 12){
if(mobileno[3] == '-' && mobileno[7] == '-'){
cout << "Name: " << c.getfname() << " " << c.getlname() << endl
<< "Date of birth: " << c.getdob() << endl
<< "ID number: " << c.getid() << endl
<< "Mobile: " << c.getmobile() << endl
<< "Age: "<< getAge(dob)<<endl;
;
}
}
The complete program is added as an attachment
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A binomial probability experiment is conducted with the given parameters. n=12, p=0.45, x<4 compute the probability of x success in the n independent trials of the experiment
a binomial probability experiment is conducted with the given parameters compute the probability of X successes in the n independent trials with experiment
Answer:0.1088 or 10.88%
Step-by-step
q = 1 - 0.35 = 0.65
P(X=2) = 12C2 × (0.35)² × (0.65)¹⁰
= 0.1088
Explanation:
Nisha has been a journalist all her life, mostly covering space missions and news, but has recently had twins and is looking for a career change. For this season of life, she’s more interested in working with other people’s writings and getting them in front of readers. Which career path might be a good fit for Nisha right now?
data science
space law
software engineering
space publishing
The __________ is normally inspected when high-side pressures are too high and the system is not cooling well.
The condenser is normally inspected when the high-side pressures are too high in a refrigerator etc.
What is a Condenser?This is defined as a device which reduces a gas or vapour to a liquid and is normally inspected when the high-side pressures are too high.
When this occurs , it therefore means the system is not cooling well which could damage other parts.
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The average repair cost of a microwave oven is 55$, with a standard deviation of 8$. the costs are normally distributed. If 12 ovens are repaired, find the probability that the mean of the repair bills will be greater than 60$.
The probability that the mean of the repair bills for 12 microwave ovens will be greater than $60 is 0.015 or about 1.5%.
What is Probability?The distribution of the sample means for repair costs of 12 microwave ovens can be approximated to a normal distribution, with a mean of the population repair cost, μ = $55 and a standard deviation of the sample mean, σ/√n = $8/√12 ≈ $2.31.
We need to find the probability that the sample mean is greater than $60. Using the formula for z-score:
z = (x - μ) / (σ / √n)
= (60 - 55) / (2.31)
≈ 2.16
We can look up the area under the standard normal distribution curve for z-score 2.16 in a z-table or calculate it using software. The probability is approximately 0.015.
Therefore, the probability that the mean of the repair bills for 12 microwave ovens will be greater than $60 is 0.015 or about 1.5%.
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which kind of the crystal structure has the feweest slip direction and therefore the metals with this structures are the generally more difficult to deform at room temperature ?
Answer:
HCP
Extra -> BCC the most, FCC between
Explanation:
In addition to science courses like physics and chemistry, what other types of courses are becoming increasingly relevant to space science careers?
history
computer science
religious studies
civil engineering
Computer science and Civil engineering
What is Space science?
Space science is the study of the area beyond the earth’s atmosphere. Computer science cuts across most disciplines as computers is useful almost all areas. Civil engineering is a broad engineering discipline studying necessities of continuous human existence. The study is not directly involved to space science but gives fundamental knowledge that will be useful to space scientists The knowledge of civil engineering will help in determining the possibility of human survival in space
contrast moral and immoral creativity and innovation
Moral creativity and innovation are based on original discoveries, whereas immoral innovation is based on unscrupulous actions.
What is innovation?Innovation refers to the practices aimed at developing new products and services for the well-being of society.
Moral innovation is an expression generally used to describe technological advancements based on intellectual property rights.
In conclusion, moral creativity and innovation are based on original discoveries, whereas immoral innovation is based on unscrupulous actions.
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Drawdown at a 0. 20-m diameter well, which has been pumping at a rate of 1,000 m3/day for a long enough time that steady-state conditions have been reached, is determined to be 0. 70 m. The aquifer is 10. 0 m thick. An observation well located 10 m away has been drawn down by 0. 20 m. Determine the hydraulic conductivity of the aquifer
Answer:the aquifer’s hydraulic conductivity is K = 10.039 m/day
transmissivity T = 331.287 m/day
the drawdown 100 m away from the well is s = 1.452 m
Explanation:Given that :
The constant pumps rate Q = 2000 m³/day
R₁ =160 m → H₁ = 249 m
R₂ = 453 m → H₂ = 250 m
The confined aquifer B is 33 m thick
The hydraulic conductivity K =
K =
K =
K = 10.039 m/day
Transmissivity T = K × B
T = 10.039×33
T = 331.287 m/day
TO find the drawdown 100 m away from the well; we have:
K =
H₃ = 248.548 m
Drawdown (s) = H₂ - H₃
s = (250 - 248.548)m
s = 1.452 m
A cat is fed a diet designed for dogs. Which amino acid is most likely to be deficient in this cat's diet?
Answer:
Your cat may also be a risk of a taurine deficiency if he or she enjoys sampling your dog's food. Dog food doesn't contain taurine, as dogs can create their own supply of the amino acid. Although your cat may like the taste, a steady diet of dog food is a bad idea
hope this helps
An overload is the same as a short or ground fault
If you are exposed to potentially infectious material via a sharps injury, what should you do immediately?
select the best option.
get the blood tested before washing it away.
report the injury.
wash the area with soap and water.
blot the area with a dry tissue.
Answer:
Soap and water
Explanation:
then report the injury....
The figure shows the region of integration for the integral.
Rewrite this integral as an equivalent iterated integral in the five other orders. Assume y(x) = 5 − x and z(x) = 25 − x2.
Answer:
first one is (a) next one is (b)
Explanation:
How do you calculate the integral vector field F(x,y) = (-2y-4πy²sin(πx) + (4xsen(πy)) I+ (-2x+8ycos(πx) +2πx²cos (πy)) j along the parameterized c curve r(t) = ((t-1) ^10, sin(π/t) with 1
Answer:
first one is (a) next one is (b)
Explanation:
Is reinforcement needed in a retaining wall
Write a code about Sum of Natural Numbers using loop in c++
Answer:
Sum of Natural Numbers using loop #include <iostream> using namespace std; int main() { int n, sum = 0; cout << "Enter a positive integer: "; cin >> n; for (int i = 1; i <= n; ++i) { sum += i; } cout << "Sum = " << sum; return 0; } Output. Enter a positive integer: 50 Sum = 1275
Explanation:
How long do graduate degrees typically take (per degree)?
1-2 years
3-6 years
5-7 years
7-10 years
The time taken typically for completing gradate degree is 3-6 years.
What is a graduate degree?
The graduate degree is the advanced level of academics after 12th standard. It depots advanced academic degree that is beneficial for students to brush-up their learnings of under graduation.
The time taken may vary degree to degree but it limits from 3 years until 6 years.
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4 Select the correct answer. A brand selling home appliances conducts a customer survey. The following table indicates the results of the survey. What percent of people are satisfied with the company and are likely to be loyal to the brand? OA 9% B. 12% О с. 14% OD. 45% О Е. 60%
elements of parallel computing
[tex]\huge{\orange}\fcolorbox{purple}{cyan}{\bf{\underline{\green{\color{pink}Answer}}}} [/tex]
Elements of parallel computing:Computer systems organization. Computing methodologies. General and reference. Networks. Software and its engineering.Theory of computation.What is the minimum level of isolation required on T2 such that T2 never sees a value of zero in its output
Answer:
The speed is minimum at t = 4 seconds.
The position function of a particle is given by
The velocity is given as,
Speed is computed as,
Differentiate above expression and equate to zero.
Thus, speed is minimum at t = 4 seconds.
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Explanation:
Discuss the microstrucral transformation of eutectic reaction, hypo-eutecticand hyper eutectic. Including temperature, reactions and microstrucral development/phases(draw diagrams)
Answer:
how will i draw diagram
Explanation:
Answer:
At eutectic there are 3phases present.
Explanation:
As you push a toggle bolt into a wall, the
toggle collapses through the wall then does
which of the following?
Safety nets must absorb the force of a 400 this is referred to as.
