Answer:
12.56
Step-by-step explanation:
143.45+22.55=157.00
157×.08= 12.56
1. In a radical engine the moving parts have a total moment of inertia of 1 kg m 2
, and this is concentrated in the plane of the single crankpin. The engine is directly connected to an air-screw of moment of inertia 18 kg m 2
, by a hollow shaft having outer and inner diameters of 80 mm, and 35 mm, and a single effective length of 0.30 m. The stiffness of the crank-throw alone is 2.5×10 4
Nm/rad. Estimate the natural frequency of torsional vibration of the custen What percentage is involved if the air-screw mass is assumed to be infinite. G=83000 N/mm 2
HINT The stiffness of the crank-throw may be reduced to an equivalent length of shaft at the same diameter as the engine using q
1
= q 1
1
+ q 2
1
The percentage change in frequency is 0%.Hence, the natural frequency of torsional vibration of the custen is given by f = 25.7 / L₀^(1/2) and the percentage change in frequency is 0%.
We are given that:
Total moment of inertia of moving parts = I = 1 kgm²
Moment of inertia of air-screw = I = 18 kgm²
Outer diameter of hollow shaft = D₀ = 80 mm
Inner diameter of hollow shaft = Dᵢ = 35 mm
Length of hollow shaft = L = 0.30 m
Stiffness of the crank-throw = K = 2.5 × 10⁴ Nm/rad
Shear modulus of elasticity = G = 83000 N/mm²
We need to calculate the natural frequency of torsional vibration of the custen.
The formula for natural frequency of torsional vibration is: f = (1/2π) [(K/L) (J/GD)]^(1/2)
Where, J = Polar moment of inertia
J = (π/32) (D₀⁴ - Dᵢ⁴)
The formula for equivalent length of hollow shaft is given by:
q₁ = q₁₁ + q₁₂
Where, q₁₁ = (π/32) (D₀⁴ - Dᵢ⁴) / L₁q₁₂ = (π/64) (D₀⁴ - Dᵢ⁴) / L₂
L₁ = length of outer diameter
L₂ = length of inner diameter
For the given shaft, L₁ + L₂ = L
Let L₁ = L₀D₀ = D = 80 mm
Dᵢ = d = 35 mm
So, L₂ = L - L₁= 0.3 - L₀...(1)
For the given crank-throw, q₁ = (π/32) (D⁴ - d⁴) / L, where D = 80 mm and d = 80 mm
Hence, q₁ = (π/32) (80⁴ - 35⁴) / L
Therefore, q₁ = (π/32) (80⁴ - 35⁴) / L₀...(2)
From the formula for natural frequency of torsional vibration, f = (1/2π) [(K/L) (J/GD)]^(1/2)
Substituting the values of K, J, G, D and L from above, f = (1/2π) [(2.5 × 10⁴ Nm/rad) / (L₀) ((π/32) (80⁴ - 35⁴) / (83000 N/mm² (80 mm)³))]^(1/2)f = (1/2π) [(2.5 × 10⁴ Nm/rad) / (L₀) (18.12)]^(1/2)f = 25.7 / L₀^(1/2)...(3)
Now, if we assume that the air-screw mass is infinite, then the moment of inertia of the air-screw is infinite.
Therefore, the formula for natural frequency of torsional vibration in this case is:
f = (1/2π) [(K/L) (J/GD)]^(1/2)Substituting I = ∞ in the above formula, we get:
f = (1/2π) [(K/L) (J/GD + J/∞)]^(1/2)f = (1/2π) [(K/L) (J/GD)]^(1/2)f = 25.7 / L₀^(1/2)
So, in this case also the frequency is the same.
Therefore, the percentage change in frequency is 0%.Hence, the natural frequency of torsional vibration of the custen is given by f = 25.7 / L₀^(1/2) and the percentage change in frequency is 0%.
Learn more about elasticity
brainly.com/question/30999432
#SPJ11
ind the inverse Laplace transform of the following function: 8 /s² (s+2)
The Steady-state gain can be found using the formula Kp = lim s->0 G(s).
A. (a) The inverse Laplace transform of the function 8 /s² (s+2) is given by f(t) = 8(t - e^(-2t)).
B. (a) To find the inverse Laplace transform of 8 /s² (s+2), we can use partial fraction decomposition and inverse Laplace transform tables.
First, we express the function in partial fraction form as follows: 8 /s² (s+2) = A/s + B/s² + C/(s+2).
To find the values of A, B, and C, we can equate the coefficients of corresponding powers of s in the numerator and denominator. This leads to the equations A + 2B + 2C = 0, A = 8, and B = -8.
Substituting the values of A and B into the equation A + 2B + 2C = 0, we find C = 4.
Now, we have the partial fraction decomposition as: 8 /s² (s+2) = 8/s - 8/s² + 4/(s+2).
Using inverse Laplace transform tables, we find the inverse Laplace transforms of each term: L⁻¹{8/s} = 8, L⁻¹{8/s²} = 8t, and L⁻¹{4/(s+2)} = 4e^(-2t).
Finally, we combine the inverse Laplace transforms of each term to obtain the inverse Laplace transform of the original function: f(t) = 8(t - e^(-2t)).
Learning more about symmetric
brainly.com/question/31184447
#SPJ11
11 Finding a difference quotient for a linear or quadratic function V Find the difference quotient f(x)=-3x²-2x+5 Simplify your answer as much as possible. f(x +h)-f(x) h f(x+h)-f(x) h = ( where h#0,
The difference quotient for the given function is 9 -2/h.
The difference quotient for the given function can be calculated as:
[f(x+h) - f(x)]/h
= [(3(x+h)² - 2(x+h) + 5) - (3x² - 2x + 5)]/h
= (3x² + 6xh + 3h² - 2x - 2h + 5 - 3x² + 2x - 5)/h
= (6xh + 3h² - 2h)/h
= (6x + 3h -2)/h
Simplifying the expression further, we get:
(6x + 3h -2)/h = 6 + 3h/h -2/h
= 6 + 3 -2/h
= 9-2/h
Therefore, the difference quotient for the given function is 9 -2/h.
Learn more about the quadratic function here:
https://brainly.com/question/29775037.
#SPJ4
"Your question is incomplete, probably the complete question/missing part is:"
Find the difference quotient [f(x+h)-f(x)]/h, where h≠0, for the function below.
f(x)=3x² -2x+5. Simplify your answer as much as possible.
I don’t know how to complete this problem. Can anyone help out? Please and thank you :)
What is the slope of a line that is parallel
and perpendicular to each line?
Answer:
m1.m2 = -1
Step-by-step explanation:
In the case of the parallel line, the slope of the two lines is parallel to each other.
Solve the inequality. Graph the solution -3s<11s+1
\(-3s\textless11s+1\\\\\\\\-3s-11s < 1\\\\\\-14s < 1\\\\\\-s < \frac{1}{14} \\\\s > -\frac{1}{14}\)
===========================
\(\textcopyright ELIZA\)
what value of z is needed to construct a 90% confidence interval on the population proportion? round your answer to two decimal places.
Therefore, the value of z needed to construct a 90% confidence interval on the population proportion is approximately 1.645 (rounded to two decimal places).
To construct a 90% confidence interval on the population proportion, we need to determine the corresponding z-value for a 90% confidence level.
For a 90% confidence level, we want to find the z-value that leaves 5% in each tail of the standard normal distribution. Since the distribution is symmetric, we need to find the z-value that corresponds to the upper 5% tail.
Looking up the z-value in a standard normal distribution table or using a statistical software, the z-value that corresponds to a 5% upper tail probability is approximately 1.645.
To know more about confidence interval,
https://brainly.com/question/16393479
#SPJ11
Nimer was driving to a hotel. He looked at his Sat Nav at 13:30 and saw the following, Distance to destination = 65 miles Nimer arrived at the hotel at 14:48 Work out the average speed of the car in mph, from 13:30 to 14:48
Answer: 50 miles per hour
Step-by-step explanation:
The average speed of the car will be gotten by using the formula:
= Distance/Time
where,
Distance = 65 miles
Time = 14:48 - 13:30 = 1:18 hours = 1 hour 18 minutes = 1 18/60 = 1.3 hours
Speed = Distance / Time
= 65 miles / 1.3 hours
= 50 miles per hour
For each sequence, determine whether it appears to be arithmetic, If it does, find the common difference. Arithmetic Commons difference: d = -4, -40, -400, -4000, ... Not arithmetic Arithmetic Common difference: d= -11, -8, -5, -2, ... d Not arithmetic Arithmetic 23, 17, 11, 5, ... Common difference: d=Not arithmetic
An arithmetic sequence is a list of numbers with a definite pattern.
If we take any number and subtract the previous number, the result is the same constant.(common difference)
-4, -40, -400, -4000,
-40-(4)= -40+4 = -36
-400-(-40)= -400+40 = -360
Not arithmetic
-11,-8,-5,-2
-8-(-11) = -8+11 = 3
-5-(-8)= -5+8 = 3
-2-(-5)=-2+5 = 3
Arithmetic
Common difference: d= 3
23, 17, 11, 5,
17-23 = -6
11-17= -6
5-11 = -6
Arithmetic
Common difference: d =-6
Given that A, O & B lie on a straight line
segment, evaluate obtuse ZAOC.
C
A
(3x +94)
0
→ ZAOC =
(x +30)
(2x-4)
The diagram is not drawn to scale.
0°
D
B
The evaluation of obtuse angle ∠AOC is 124°.
What does "obtuse angle" mean?Any angle more than 90 degrees is deemed obtuse: A straight angle is one with a 180° measurement: A zero angle is one with a measurement of 0°: Angles with measures that add up to 90 degrees are said to be complementary angles: Angles with measures that add up to 180° are referred to as supplementary angles.
3x + 94 + x + 30 + 2x - 4 = 180
Sum of angle in a triangle
6x + 120° = 180°
6x = 180° - 120°
6x = 60°
x = 10°
Now, ∠AOC = 3x + 94
3 × 10 + 94
30 + 94
124°
To know more about obtuse angle visit:-
https://brainly.com/question/29077542
#SPJ1
The length of fencing arond a square garden 24 m what is the length of one of the garden
The length of one side of the garden is 6 meters is the length of fencing around a square garden is 24 m.
A square has four sides of equal length, so to find the length of one side of the garden, we can divide the total length of the fencing by 4.
Given that the length of fencing around the square garden is 24 m, we have:
Length of one side = Total length of fencing / Number of sides
Length of one side = 24 m / 4
Length of one side = 6 m
Therefore, the length of one side of the garden is 6 meters.
The complete question is:-
The length of fencing around a square garden is 24 m . what is the length of one side of the garden?
To learn more about the square garden, refer:-
https://brainly.com/question/28777911
#SPJ4
what is the equation of the line parallel to y= -2 that goes through the point (0,5)
The required equation of the line parallel to y = -2 that goes through the point (0,5) is y = 5.
How to find the equation of line?The given line is y = -2, which is a horizontal line passing through y = -2. Any line parallel to this line will also be horizontal and have the same y-coordinate at any point.
Since the line we're looking for passes through the point (0,5), its equation must be of the form y = c, where c is the y-coordinate of the point. Therefore, the equation of the line parallel to y = -2 that goes through the point (0,5) is:
y = 5
Alternatively, we can also see that since the line we're looking for is parallel to y = -2, it will have the same slope as this line, which is 0. Therefore, we can use the point-slope form of the equation of a line:
y - y1 = m(x - x1)
where m is the slope and (x1, y1) is a point on the line. Substituting m = 0, x1 = 0, and y1 = 5, we get:
y - 5 = 0(x - 0)
Simplifying, we get:
y = 5
So the equation of the line parallel to y = -2 that goes through the point (0,5) is y = 5.
To know more about Equation visit:
brainly.com/question/649785
#SPJ1
Complete the statement.
In any given circle, the measure of a(n) is one-half the measure of the .
Diane bought 3 CDs that were each the same price. Including sales tax, she paid a total of $32.10. Of that total, $1.80 was tax. What was the price of each CD before tax?
All you have to do is take $32.10 and then subtract 1.80. So it should look like 32.10 - $1.80. The answer should be 30.30
In a race, karen rode her bike for 1 hours
and then swam for 45 minutes. how long
did karen spend riding her bike and
swimming in the race? (1 hour - 60 minutes)
Karan swam and biked for a total of 1 hour and 45 minutes.
let's say 60=100 for a total of 100 equaling 1 hour.
Therefore, 100+45= 145
Using the slope formula, find the slope of the line through the given points two points below:
(10, -19) and (-2, -19)
Pleas please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!!!
Answer:
10/9
Step-by-step explanation:
average rate of change in 0≤x≤9
=(3-(-7))/(9-0)=10/9
Answer:
The solution is 10/9
Step-by-step explanation:
Step 1: identify the right approach:
Given a function g(x) over a period of time, to find the average rate of change of g(x) over this period of time, we divide the change in g(x) by the change in x.
Step 2: Perform the calculation:
As shown in picture,
x = 0 => g(x) = -7
x = 9 => g(x) = 3
=> The change of x over interval [0, 9] is:
x_change = 9 - 0 = 9
=> The change of g(x) over interval [0, 9] is:
g(x)_change = 3 - (-7) = 10
=> The average rate (r) of change of g(x) over interval [0, 9] is:
r = g(x)_change/x_change = 10/9
Hop this helps!
:)
a manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 411.0 gram setting. it is believed that the machine is underfilling the bags. a 35 bag sample had a mean of 406.0 grams. a level of significance of 0.05 will be used. state the hypotheses. assume the standard deviation is known to be 25.0.
Using a 35-bag sample with a mean of 406.0 grams, a known standard deviation of 25.0 grams, and a level of significance of 0.05, you can perform a one-tailed Z-test to determine whether to reject or fail to reject the null hypothesis.
To test if the potato chip manufacturer's bag filling machine is working correctly at the 411.0-gram setting, we will state the hypotheses using the given terms.
Null Hypothesis (H0): The machine fills bags correctly, with a mean weight of 411.0 grams (µ = 411.0 grams)
Alternative Hypothesis (H1): The machine is underfilling bags, with a mean weight less than 411.0 grams (µ < 411.0 grams)
To learn more about standard deviation, refer here:
https://brainly.com/question/23907081#
#SPJ11
To calculate the average of 56,78,90,32,45
Answer:
60.2 is the average
Step-by-step explanation:
add all numbers together to get: 301
divide 301 by 5 because there are 5 numbers total to get: 60.2
if alicia had been able to achieve the same percentage of visitors for the entire week as she does on monday, how many additional people would then visit cool beans?
Alicia want that 50 % of all people who visited one of the three coffee shops should visit her every week.
Total visitors to the other two coffee shops during one week = 840+1,220 i.e. 2,060
Total visits to Cool Beans should be 50 % of total visits i.e. equal to visits of the other two cafes combined
Visits to Cool Beans should be 2,060
Current Visits =548
Additional visits =2,060-548 i.e. 1,512 visits
Note for better understanding:
same or the demand of coffee will remain same, then the Additional people will be calculated as:
Total number of visits = 584+840+1,220 i.e. 2,608
Target number of visits =50 % of total visits i.e. 1,304 visit
Additional visits = 1,304-548 = 756 visits
To know more about percentage
https://brainly.com/question/16797504
#SPJ4
Danielle wants to paint her daughters room pink. She has two different plans: Plan A: Use 5 parts white and 2 parts red. Plan B: Use four parts white and 1 part red.
If "Danielle" needs a total of 3 gallons of paint, how much will need to be red and how much will need to be white to make the least red mix? Use the mix that you selected from part A. (DOK 3)
Answer:
If we are assuming that plan A produces a whole gallon then you would need 15 parts white and 6 parts red
Step-by-step explanation:
What is algebra? Why is it so crucial for mathematics?
Answer:
Algebra is the part of mathematics in which letters and other general symbols represent numbers and quantities in formulae and equations. A system of algebra is based on given axioms.
Step-by-step explanation:
For example α+α+α=3α but α×α×α=α³
or
t=2+1α
when α= 1,2,3
1st term= 3
2nd term=4
3rd term=5
Q. What would be the value of the 5th term?
A. 4th term =6
so 5th term = 7
I hope this is useful and that you give brainliest to me pls
your friend says that there are 36 feet in 12 yards is your friend correct? explain your reasoning.
PLEASE HURRY!!
Answer:
Yes
Step-by-step explanation:
1 yard is 3 feet. so 12 yards is 36 by 12*3
Consider the equation x 5 − 2 = 11. Each of these values might be the solution to this equation. Verify the correct solution by substituting each value into the equation. Which is the correct solution?
Answer:
x = 65
Step-by-step explanation:
Complete question is:
Which is the correct solution?
x = 1.8
x = 2.6
x = 45
x = 65
SOLUTION:
The given equation is : \(\frac{x}{5}-2=11\)
Substituting all the values of 'x' one by one
-> For x = 1.8 : \(\frac{1.8}{5}-2=11\)
-1.64≠11
-> For x = 2.6 : \(\frac{2.6}{5}-2=11\)
-1.48≠11
-> For x = 45 : \(\frac{45}{5}-2=11\)
7≠11
-> For x = 65 : \(\frac{65}{5}-2=11\)
11=11
Therefore, by substituting x in every equation, x = 65
Answer:
Substitute 7 for a.
Simplify the equation after substituting the value for a.
Verify that a = 7 is correct when the result is a true statement.
Step-by-step explanation:
Here, the given equation is,,
And, after solving it the result is,
a = 7
We can check whether a result is the solution of an equation by substituting the result in the given equation.
If we get a true statement, then the result is the solution of the equation.
Thus, for verifying the solution, steps are as follow,
Step 1 : Substitute 7 ,
-9(7-5) = -18
Step 2 : Simplify the equation after substituting the value of a
-9(2) = -18
Step 3 : Verify that a = 7 is correct when the result is a true statement.
-18 = -18
Y=-3^x what is the answer
Answer:
y = 0
Step-by-step explanation:
Study the following program:
x = 1 while True: if x % 5 = = 0: break print(x) x + = 1 What will be the output of this code?
The output of the following code snippet will be 1, 2, 3, and 4.
The reason is that the while loop runs infinitely until the break statement is executed. The break statement terminates the loop if the value of x is divisible by 5. However, the value of x is incremented at each iteration of the loop before checking the condition. Here is the step-by-step explanation of how this code works:
Step 1: Assign 1 to x.x = 1
Step 2: Start an infinite loop using the while True statement.
Step 3: Check if the value of x is divisible by 5 using the if x % 5 == 0 statement.
Step 4: If the value of x is divisible by 5, terminate the loop using the break statement.
Step 5: Print the value of x to the console using the print(x) statement.
Step 6: Increment the value of x by 1 using the x += 1 statement.
Step 7: Repeat steps 3-6 until the break statement is executed.
Therefore, the output of the code will be: 1 2 3 4.
Learn more about while loop visit:
brainly.com/question/30883208
#SPJ11
Peyton needs to order some new supplies for the restaurant where she works. The restaurant needs at least 732 forks. There are currently 287 forks. If each sentence on sale contains 10 forks right and solve an inequality which can be used to determine X, The number of sets of forks Peyton could buy for the restaurant to have enough forks
Peyton needs to buy at least 45 sets for the restaurant to have enough forks.
Let the number of sets of forks be represented by 'x'. according to the question there are 10 forks in each set.
Since there are currently 287 forks available in the restaurant, and the restaurant needs at least 732 forks.
The inequality used to represent the given scenario is given by:
10x + 287 ≥ 732
10x ≥ 445
x ≥ 44.5
As Peyton cannot buy 44.5 sets of forks so we round it off to 45.
Therefore, he requires 45 sets in total.
Learn more about the question at:
brainly.com/question/24900162
#SPJ1
Versant Corporation executed a 1-for-10 reverse split on August 22. At the time, the corporation had 35,608,800 shares outstanding, and the pre-split price per share was $0.41.
a. How many shares were outstanding after the split?
b. What was the post-price per share after the split?
c. Show that this split was a monetary non-event for the corporation.
a. After the 1-for-10 reverse split, the number of outstanding shares would be 3,560,880. This is because the reverse split reduces the number of outstanding shares by a factor of 10.
b. To determine the post-split price per share, we first need to calculate the total market capitalization of the corporation after the split. The total market capitalization is the product of the number of outstanding shares and the price per share.
Before the split, the market capitalization was:
35,608,800 shares * $0.41 per share = $14,597,008
After the split, the market capitalization is:
3,560,880 shares * x per share, where x is the post-split price per share.
Since this is a monetary non-event (as shown in part c below), the market capitalization after the split should be the same as the market capitalization before the split:
$14,597,008 = 3,560,880 shares * x per share
Solving for x, we get:
x = $4.10 per share
Therefore, the post-split price per share is $4.10.
c. This split was a monetary non-event for the corporation because it did not change the total market capitalization of the corporation. The market capitalization before the split was $14,597,008, and after the split, the market capitalization was still $14,597,008. This means that the split did not change the value of the corporation. Instead, it simply consolidated the number of outstanding shares and increased the price per share by a factor of 10. The overall value of the company remained the same.
To know more about corporation:
https://brainly.com/question/31313496
#SPJ1
a. After the 1-for-10 reverse split, the number of outstanding shares would be 3,560,880.
b. the post-split price per share is $4.10.
c. This split was a monetary non-event for the corporation because it did not change the total market capitalization of the corporation.
How to find splits?
a. After the 1-for-10 reverse split, the number of outstanding shares would be 3,560,880. This is because the reverse split reduces the number of outstanding shares by a factor of 10.
b. To determine the post-split price per share, we first need to calculate the total market capitalization of the corporation after the split. The total market capitalization is the product of the number of outstanding shares and the price per share.
Before the split, the market capitalization was:
35,608,800 shares * $0.41 per share = $14,597,008
After the split, the market capitalization is:
3,560,880 shares * x per share, where x is the post-split price per share.
Since this is a monetary non-event (as shown in part c below), the market capitalization after the split should be the same as the market capitalization before the split:
$14,597,008 = 3,560,880 shares * x per share
Solving for x, we get:
x = $4.10 per share
Therefore, the post-split price per share is $4.10.
c. This split was a monetary non-event for the corporation because it did not change the total market capitalization of the corporation. The market capitalization before the split was $14,597,008, and after the split, the market capitalization was still $14,597,008. This means that the split did not change the value of the corporation. Instead, it simply consolidated the number of outstanding shares and increased the price per share by a factor of 10. The overall value of the company remained the same.
To know more about corporation:
brainly.com/question/31313496
#SPJ1
Help me with this question please
Answer:
18 inches cubed
Step-by-step explanation:
to get the volume for something you must multiply it. length × width × hight
so in this case it would be 3×2×3=18 inches cubed
which choice is equivalent to the expression below 2^7 times 19
The expression 2^7 times 19 can be simplified by first evaluating the exponential term, 2^7, which is equal to 128. Therefore:2^7 times 19 = 128 * 19We can then evaluate the product of 128 and 19 using multiplication. When we do that, we get:2^7 times 19 = 2432Therefore, the choice that is equivalent to the expression 2^7 times 19 is 2432