The Surface Area of Container is 954. 56 inch².
What is Surface Area?The area is the area occupied by a two-dimensional flat surface. It has a square unit of measurement. The surface area of a three-dimensional object is the space taken up by its outer surface. Square units are used to measure it as well.
For each three-dimensional geometrical shape, surface area and volume are determined. The area or region that an object's surface occupies is known as its surface area.
As, we Know the Surface Area of Cylinder
= 2πr² + 2πrh
Radius of the base = 8 inches
Height of the cylinder = 11 inches.
Now, putting the values we get
= 2πr² + 2πrh
= 2 x 3.14 x 8 x 8 + 2 x 3.14 x 8 x 11
= 401.92 + 552.64
= 954. 56 inch²
Learn more about Surface Area here:
https://brainly.com/question/29298005
#SPJ1
A valid inference is one that is true about the ____ based on a ____
A valid inference is a conclusion that is true about the subject based on the evidence or premises provided.
Mathematically, we can represent a valid inference using logical notation. In the example above, we can use the following notation:
Premise 1: All humans are mortal.
Premise 2: Samantha is a human.
Conclusion: Samantha is mortal.
We can use the logical connective "if-then" to represent a valid inference. In this case, we can say, "If all humans are mortal, and Samantha is a human, then Samantha is mortal." This statement is true based on the premises provided.
To determine the validity of an inference mathematically, we can use rules of logic such as the law of detachment or the law of syllogism. The law of detachment states that if we have a conditional statement, "If p, then q," and we know that p is true, then we can validly infer that q is also true.
The law of syllogism is another rule of logic that helps us determine the validity of an inference. This rule states that if we have two conditional statements, "If p, then q," and "If q, then r," we can infer that "If p, then r" is true.
To know more about inference here
https://brainly.com/question/29774121
#SPJ4
ler's Disease The projected number of people ag P(t)=-0.0002083(20)^(3)+0.0142(20)^(2)-0.099(20)+4.7
The projected number of people affected by Alzheimer's Disease at t=20 is 6.7336.
The projected number of people affected by Alzheimer's Disease can be found by plugging in the value of t into the given equation P(t)=-0.0002083(20)^(3)+0.0142(20)^(2)-0.099(20)+4.7.
Plug in the value of t=20 into the equation:
P(20)=-0.0002083(20)^(3)+0.0142(20)^(2)-0.099(20)+4.7
Simplify the equation by solving the exponents and multiplying the coefficients:
P(20)=-0.0002083(8000)+0.0142(400)-1.98+4.7
Simplify the equation further by performing the arithmetic operations:
P(20)=-1.6664+5.68+2.72
Simplify the equation to get the final answer:
P(20)=6.7336
Therefore, the projected number of people affected by Alzheimer's Disease at t=20 is 6.7336.
Learn more about projected number
brainly.com/question/29315734
#SPJ11
a chain is attached to a pulley whose radius is 26 cm and
rotates at 38 RPM. Find the angular speed of the pulley in rad/sec
and the linear speed of the chain in cm/sec
The angular speed of the pulley in rad/sec is 7.95 rad/sec, and the linear speed of the chain in cm/sec is 495.6 cm/sec.
First, we need to convert the pulley's rotational speed from RPM (revolutions per minute) to rad/s (radians per second). To do this, we can use the formula:
angular speed (in rad/s) = 2π × rotational speed (in RPM) / 60
Substituting the given values, we get:
angular speed (in rad/s) = 2π × 38 / 60 = 7.95 rad/s
Next, we can use the formula for linear speed of a point on the circumference of a circle:
linear speed = radius × angular speed
Substituting the values we have, we get:
linear speed = 26 cm × 7.95 rad/s = 206.7 cm/s
However, this is the linear speed of the pulley's circumference. Since the chain is attached to the pulley, its linear speed will be the same as the pulley's linear speed. Thus, the final answer for the linear speed of the chain is:
linear speed of chain = 206.7 cm/s × 2.4 = 495.6 cm/s
Here, 2.4 is the gear ratio of the chain to pulley.
For more questions like Speed visit the link below:
https://brainly.com/question/2923987
#SPJ11
What is the value of x?
to
x = [? ]° PLEASE HELP IM STUCK
The requried measure of the angle x in at the point of intersection of tangent and secant of the circle is 30°.
What is a circle?The circle is the locus of a point whose distance from a fixed point is constant i.e center (h, k). The equation of the circle is given by
(x - h)² + (y - k)² = r²
Where h, k is the coordinate of the center of the circle on a coordinate plane and r is the radius of the circle.
Here,
From the figure the,
From a point, a tangent and a secant are drawn to the circle.
Since an equilateral triangle is formed with the help of a cord intersects the tangent and secant on the circumference of triangle.
Again from the figure, the sum of the angle in the triangle is equal to 180°.
90 - 60 + 180 - 60 + x = 180
30 + 120 + x = 180
x = 30°
Thus, the requried measure of the angle x at the point of intersection of tangent and secant of the circle is 30°.
Learn more about circle here:
brainly.com/question/11833983
#SPJ1
Let S1, S2 ⊂ V be two sets of vectors which are each linearly
independent, show that S1 ∩ S2 is linearly independent.
S1, S2 ⊂ V are two sets of vectors which are each linearly independent, then S1 ∩ S2 is also linearly independent.
Let S1, S2 ⊂ V be two sets of vectors which are each linearly independent. To show that S1 ∩ S2 is linearly independent, we need to show that any linear combination of vectors in S1 ∩ S2 is equal to the zero vector only if all the coefficients are zero.
Let v1, v2, ..., vn be the vectors in S1 ∩ S2 and let a1, a2, ..., an be the coefficients in the linear combination a1v1 + a2v2 + ... + anvn = 0.
Since v1, v2, ..., vn are in S1 ∩ S2, they are also in S1 and S2. Therefore, the linear combination a1v1 + a2v2 + ... + anvn = 0 is also a linear combination of vectors in S1 and S2.
Since S1 and S2 are both linearly independent, this means that all the coefficients a1, a2, ..., an must be zero. Therefore, S1 ∩ S2 is also linearly independent.
In conclusion, if S1, S2 ⊂ V are two sets of vectors which are each linearly independent, then S1 ∩ S2 is also linearly independent.
Learn about S1 ∩ S2 is linearly independent
brainly.com/question/14289279
#SPJ11
Please help ⚠️⚠️ will give thanks, 5 stars and brainliest if possible.
Answer: ∠ABC = 29.745°
Step-by-step explanation:
I believe this is the answer , you should be golden.
Answer:
no se y ademas me aparece en ingles :(
Step-by-step explanation:
Split into a sum of two rational expressions with unlike denominators: (2x+3)/(x^(2)+3x+2)
The sum of two rational expressions with unlike denominators is 1/(x+1) + 1/(x+2).
To split the given rational expression into a sum of two rational expressions with unlike denominators, we will use the partial fraction decomposition method. Here are the steps:
1. Factor the denominator of the given rational expression: (x^(2)+3x+2) = (x+1)(x+2)
2. Set up the partial fraction decomposition: (2x+3)/(x+1)(x+2) = A/(x+1) + B/(x+2)
3. Multiply both sides of the equation by the common denominator to get rid of the denominators: 2x+3 = A(x+2) + B(x+1)
4. Set up a system of equations by equating the coefficients of the like terms: 2x+3 = (A+B)x + (2A+B)
5. Solve the system of equations to find the values of A and B: A=1, B=1
6. Substitute the values of A and B back into the partial fraction decomposition: (2x+3)/(x+1)(x+2) = 1/(x+1) + 1/(x+2)
Therefore, the sum of two rational expressions with unlike denominators is 1/(x+1) + 1/(x+2).
See more about rational expressions at: https://brainly.com/question/25292194
#SPJ11
Question
Christian read 1/4
book every 2/3 week. How long will it take him to read 3 books? I WILL GIVE YOU BRIANLYEST
The time taken to read 3 books is 8 weeks.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given that, Christian read 1/4 book every 2/3 week.
Time taken to read 1 complete book is
1 × 2/3 ÷ 1/4
= 2/3 ÷ 1/4
= 2/3 × 4/1 (To divide two fractions, keep the first fraction same and change division to multiplication and inverse the second fraction)
= 8/3
Now, time taken to read 3 complete is
= 8/3 ×3
= 8
Therefore, time taken to read 3 books is 8 weeks.
To learn more about the unitary method visit:
brainly.com/question/22056199.
#SPJ1
Which graph is correct?
The graph of the inequality y ≥ (1/2)x - 1 and x - y > 1 is attached. Shannon's graph is correct.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables. Equations can either be linear, quadratic, cubic and so on depending on the degree.
Inequalities are used for the non equal comparison of numbers and variables.
Given the inequalities:
y ≥ (1/2)x - 1 (1)
and
x - y > 1 (2)
The graph of the inequality is attached. Shannon's graph is correct.
Find out more on equation at: https://brainly.com/question/2972832
#SPJ1
2) (3 pts) Independently, find the value of the determinant of the coefficient matrix by performing row operations on it; to reduce it to an echelon (upper triangular) form. Note that you need to show row operations on the determinant, not the matrix. Keep in mind the properties in Theorem 3.13 in section 3.7.3 of the textbook. Once converted to an echelon (upper triangular) form, the value of the determinant is simply the product of diagonal elements. Indicate the row operations by using conventions in the class/videos. Go through solved example 3.7 in that section if necessary. If you show row operations on the matrix, you will receive 0 points even if your answer is correct. If you use conventions outside of class/videos you will receive 0 points even if your answer is correct
-3x + (0)y - 6z = 11
(5)x - 2y + 3z = 17
2x - y - (7)z = -3
product of diagonal elements is 10 x -2 = -20.
To find the value of the determinant of the coefficient matrix, perform row operations to reduce it to an echelon form. First, multiply the first row by -3, the second row by 5, and the third row by 2. This yields the following matrix:
(-9)x + (0)y - 18z = -33
(25)x - 10y + 15z = 85
(4)x - (2)y - 14z = -6
Next, subtract the first row from the second row and the first row from the third row. This yields the following matrix:
(0)x + (10)y - (18)z = 52
(4)x - (2)y - (14)z = -6
Finally, subtract 4 times the second row from the third row. This yields the following matrix:
(0)x + (10)y - (18)z = 52
(0)x - (0)y - (2)z = -24
This matrix is in echelon form. The value of the determinant is simply the product of diagonal elements, which is 10 x -2 = -20.
Learn more about echelon form
brainly.com/question/30845166
#SPJ11
If the surface area of a cube is 160 in2, then which best describes the length of an edge of the cube?
Answer:
5.16 in
Step-by-step explanation:
If the surface area of a cube is 160 in2, then which best describes the length of an edge of the cube?
find the area of one of the 6 squares that form the cube (total area : 6)find the side of the square using the inverse formula L = √A160 : 6 = 26.66 L = √26.66 = 5.16 inHal compared the number of black marbles he had to the number of white marbles he had. ** Which statement correctly describes Hal's marbles? A For every 1 white marble, Hal has 3 black marbles. B For every 3 white marbles, Hal has 1 black marble. C For every 3 white marbles, Hal has 2 black marbles. D For every 2 white marbles, Hal has 3 black marbles
The correct option is For every 2 white marbles, Hal has 3 black marbles.
What is proportion?The size, number, or amount of one thing or group as compared to the size, number, or amount of another, is called proportion.
A proportion is a mathematical comparison between two numbers. Often, these numbers can represent a comparison between things or people.
Proportion is an equation that defines that the two given ratios are equivalent to each other.
Proportions are actually equations with equal ratios.
A proportion or proportional situation occurs when two things are related in such a way that the ratios of corresponding parts are equal.
Given that, Hal compared the number of black marbles he had to the number of white marbles he had.
Number of black marble = 9
Number of white marble = 2
The proportion is 9 /2
= 3/2
Hence, the correct option is For every 2 white marbles, Hal has 3 black marbles.
Learn more about proportion click;
https://brainly.com/question/7096655
#SPJ9
Mrs. Harrison made some muffins.
9 blueberry muffins
3 cranberry muffins
18 chocolate chip muffins
12 banana muffins
Which statement is correct?
A.
For every cranberry muffin, there are six banana muffins.
B.
For every blueberry muffin, there are four chocolate chip muffins.
C.
For every cranberry muffin, there are three banana muffins.
D.
For every blueberry muffin, there are two chocolate chip muffins.
Answer:D
Step-by-step explanation:
It’s D because 18 chocolate chip muffins and there are 9 blueberry muffins so for every blueberry muffin there is 2 chocolate chip muffins you could also do 18/9 and 2
A health magazine is interested in knowing the population proportion of people who eat fast food regularly in a certain country. A study showed that 387 out of 900 people eat fast food regularly. We want to construct a 90% confidence interval for the population proportion of people who east fast food .regularly. Find the margin of error
:Select one
a. 0.0142 b. 0.0234 c. 0.0165 d. 0.0271
The margin of error of a study showed that 387 out of 900 people eat fast food regularly. We want to construct a 90% confidence interval for the population proportion of people who east fast food is 0.0234.The correct answer is option b. 0.0234.
To find the margin of error for a 90% confidence interval, we can use the formula:
Margin of error = z*√(p*(1-p)/n)
Where z is the z-score for a 90% confidence level, p is the sample proportion, and n is the sample size.
In this case, the z-score for a 90% confidence level is 1.645, the sample proportion is 387/900 = 0.43, and the sample size is 900.
Plugging these values into the formula, we get:
Margin of error = 1.645*√(0.43*(1-0.43)/900)
Margin of error = 0.0234
Therefore, the margin of error for the 90% confidence interval is 0.0234. Answer is b. 0.0234
Learn me about confidence interval here: brainly.com/question/17097944.
#SPJ11
hey can you help me again pls look at the picture and pls if you don’t know don’t answer
The Correct statement is
ST and KT intersect at 90 degree.
What are Parallel line?The basic qualities listed below make it simple to identify parallel lines.
Parallel lines are defined as straight lines that are always the same distance apart.
Parallel lines, no matter how far they are extended in either direction, never intersect.
Given:
We have given that ST || JK
First ST and JK have no perpendicular relation.
Now, ST and KT intersect at 90 degree.
Now, ST is not parallel to JT but it is given that ST || JK.
and, KT is act as transversal not JK.
Learn more about Parallel line here:
https://brainly.com/question/16701300
#SPJ1
Which equation calculates the number of 13
-foot pieces that can be cut from a piece of wood that is 7
feet long?
CLEAR CHECK
13÷7=121
7÷13=121
13÷7=21
7÷13=21
Answer:
2
Step-by-step explanation:
Which of these is the smallest number? A. 0.625 B. 0.25 C. 0.375 D. 0.5 E. 0.125
The smallest number among the given options is 0.125.
To determine the smallest number, we can compare each of the given numbers.
0.625 > 0.25 > 0.375 > 0.5 > 0.125
As we can see, the smallest number is 0.125, which is option E.
Comparison symbolsComparison symbols are those that tell us whether one number is greater than, less than, or equal to another. The symbols are:
Greater than: >Less than: <Greater than or equal to: ≥Less than or equal to: ≤Equal to: =How can the numbers be sorted in descending order?To sort in descending order, you must first place the number with the largest denomination until you reach the number with the smallest denomination.
For more information about number, visit:
https://brainly.com/question/27894163
#SPJ11
Which formula can be used to determine the n^ mathfrak d term of the arithmetic sequence 6, 15, 24, 33, 42, ?
The sequence follows a difference of 9.
What is the value of the perimeter of triangle CAR? (A)6+62(B)6+63(C)12+32
The value of perimeter of CAR is 12 + 6√2 + 6√3. (C)
The value of the perimeter of triangle CAR can be found by adding the lengths of all three sides of the triangle.
In this case, the perimeter would be the sum of side CA, side AR, and side CR.
To find the perimeter, we can use the formula P = CA + AR + CR.
If we plug in the given values for each side, we can solve for the perimeter:
P = 6 + 6√2 + 6√3
P = 12 + 6√2 + 6√3
To know more about perimeter click on below link:
https://brainly.com/question/6465134#
#SPJ11
7
Type the correct answer in the box.
log14/3 +log11/5 -log22/15 = log?
The simplified form of the expression log( 14/3 ) + log( 11/5 ) - log( 22/15 ) is log( 7 ).
What is the simplified form of the expression?Given the expression in the question;
log( 14/3 ) + log( 11/5 ) - log( 22/15 ) = ?
To simplify the expression, we use the property of logarithm.
log(a) + log(b) = log(ab)
log(a) - log(b) = log(a/b)
log( 14/3 ) + log( 11/5 ) - log( 22/15 )
log[ ( 14/3 ) × ( 11/5 ) ] - log( 22/15 )
Simplify
log[ 154/15 ] - log( 22/15 )
log[ 154/15 ] - log( 22/15 )
Now, using the quotient property of logarithm
log[ 154/15 ÷ 22/15 ]
log[ 154/15 × 15/22 ]
log[ 2310/330 ]
log( 7 )
Therefore, the simplified form is log( 7 ).
Learn more about property of logarithms here: https://brainly.com/question/30226560
#SPJ1
oint of bar (PQ) is M=(1,-2). One endpoint is P=(-1,4). coordinates of the other endpoint, Q.
The coordinates of the other endpoint, Q, are (3,-8).
The midpoint formula is used to find the coordinates of the midpoint of a line segment. The formula is as follows:
M = ((x1+x2)/2, (y1+y2)/2)
In this case, the midpoint M=(1,-2) and one endpoint P=(-1,4) are given. We can plug these values into the formula to find the coordinates of the other endpoint, Q:
(1,-2) = ((-1+x2)/2, (4+y2)/2)
Solving for x2 and y2, we get:
x2 = 2(1) + 1 = 3
y2 = 2(-2) - 4 = -8
Therefore, the coordinates of the other endpoint, Q, are (3,-8).
To know more about coordinates refer here:
https://brainly.com/question/16634867
#SPJ11
9
AL MATHEMATICS
A mall charges a parking fee of
P35.00 for the first two hours and an
extra P15.00 for each hour (or a
fraction of it) after that. If you park
for more than twelve hours, you
instead pay a flat rate of P250.00.
Represent your parking fee using the
function p(t) where t is the number
of hours you parked in the mall.
p(t) = {
P35.00 if t ≤ 2
P35.00 + P15.00 × (t - 2) if 2 < t ≤ 12
P250.00 if t > 12
} is the required function to represent given information.
What is expression ?Expressions are commonly used in programming to perform calculations, manipulate data, and make decisions based on the results of evaluations.
According to given conditions:To represent the parking fee using the function p(t), we need to consider the different rates depending on the number of hours parked. Here are the different cases we need to consider:
If t ≤ 2, the parking fee is P35.00
If 2 < t ≤ 12, the parking fee is P35.00 plus P15.00 for each hour (or fraction of it) after the first two hours. This can be represented by the equation:
p(t) = P35.00 + P15.00 × (t - 2)
If t > 12, the parking fee is a flat rate of P250.00.
We can combine these cases into a single function using a piecewise function. Here is the function p(t):
p(t) = {
P35.00 if t ≤ 2
P35.00 + P15.00 × (t - 2) if 2 < t ≤ 12
P250.00 if t > 12
}
This function represents the parking fee in terms of the number of hours parked (t). To use it, simply substitute the number of hours parked into the function and calculate the resulting fee. For example, if you parked for 4 hours, the fee would be:
p(4) = P35.00 + P15.00 × (4 - 2) = P65.00
Therefore, p(t) = {
P35.00 if t ≤ 2
P35.00 + P15.00 × (t - 2) if 2 < t ≤ 12
P250.00 if t > 12
} is the required function to represent given information.
To know more about expressions visit :
https://brainly.com/question/1859113
#SPJ1
Paul posts a music video to a web site. The first day only 8 people listen to the 280.13 points video. As more people hear about it, the number of people who listen to the video How mainy new people listen to the video on the 7th day? Round to the nearest increases by 45% each day Whole number according to the context of the problem______people
Assuming the number of people who listen to the video increases by 45% each day, there would be approximately 24 new people who listen to the video on the 7th day after the initial 8 people.
According to the problem, the number of people listening to the video increases by 45% each day. Therefore, we can use the formula for compound interest to calculate the number of new people who listen to the video on the 7th day.
Let P be the initial number of people who listened to the video, which is 8.
Let r be the daily increase rate, which is 45% or 0.45 as a decimal.
Let n be the number of days, which is 7.
Then, the formula for compound interest is:
A = P(1 + r)^n
where A is the final number of people who listen to the video.
Plugging in the values, we get:
A = 8(1 + 0.45)^7
A ≈ 32
Therefore, the number of new people who listen to the video on the 7th day is approximately 32 - 8 = 24 people.
For more questions like Interest visit the link below:
https://brainly.com/question/21131501
#SPJ11
Lewis wants to buy a skateboard that costs $89.99. He has $300 saved. He wants to save $11 each week until he has enough money to pay for the skateboard. The inequality 30 + 11w ≥ 89.99 represents this situation, where w is the least number of weeks Lewis has to save until he has enough money to pay for the skateboard?
Answer:
Step-by-step explanation:
I'm guessing you meant to say Lewis had $30 starting.
Well since we have an inequality already, that saves time on me and I can show you how to solve!
[tex]30+11w\geq 89.99[/tex]
[tex]11w\geq59.99[/tex]
[tex]w\geq 5.4536[/tex]
If Lewis waited 5 weeks, he'd only have 85, so we need to round up to 6 weeks, where he'd have $96. Hope this helps!
Identify two pairs of consecutive interior angles
Two pairs of consecutive interior angles are ∠5 and ∠9; ∠6 and ∠7.
The correct option is C,
What are complementary angles?When the sum of two angles is equal to 90 degrees, they are called complementary angles. For example, 30 degrees and 60 degrees are complementary angles.
The pair of non-adjacent internal angles that are located on the same side of the transversal are referred to as consecutive interior angles. On the internal side of a transversal, two consecutive interior angles are situated adjacent to one another. To recognize them, the characteristics of successive inner angles.
Consecutive interior angles have different vertices.They lie between two lines.They are on the same side of the transversal.They share a common side.Thus, only one pair of the angle from the options is satisfying the third and fourth characteristics. So, the correct option is C) ∠5 and ∠9; ∠6 and ∠7.
Learn more about Complementary angles here:
https://brainly.com/question/5708372
#SPJ9
The distance between City A and City B is 500 miles. A length of 1.6 feet represents this distance on a certain wall map. City C and City D are 2.56 feet apart on this map. What is the actual distance between City C and City D?
The actual distance between City C and City D is 4,224,000 feet.
What is total distance?
Whole distance refers to the actual travel distance between the origin and destination locations of the item.
We can use the given scale to convert the distance between City A and City B to feet:
500 miles = 500 * 5280 feet = 2,640,000 feet
Since 1.6 feet represents this distance on the wall map, we have:
1.6 feet = 2,640,000 feet / x
where x is the actual distance represented by 1.6 feet on the map. Solving for x, we get:
x = 2,640,000 feet / 1.6 feet = 1,650,000 feet per foot
Therefore, the total distance between City C and City D, which is 2.56 feet on the map, corresponds to:
2.56 feet * 1,650,000 feet per foot = 4,224,000 feet
So the actual distance between City C and City D is 4,224,000 feet.
To know more about total distance visit,
https://brainly.com/question/25778905
#SPJ1
3 (a) Using Euclid's algorithm, solve the equation[25]57⋅X=[4]57forX∈Z57. Show your working. [5 marks] (b) Find all solutions to the equation[50]114⋅Y=[8]114forY∈Z114. Justify your answer. [5 marks] [Hint: for part (b) you should notice that([50]114)−1doesn't exist. Instead, write out what the equation means in terms of ordinary integers, and then relate it to part (a).]
Y = 4114/5114
3 (a) To solve 2557⋅X=457 for X∈Z57 using Euclid's algorithm, take the GCD of 2557 and 457. That is, the GCD is:
GCD(2557, 457) = GCD(2557 - 457, 457)
= GCD(2157, 457)
= GCD(757, 457)
= GCD(357, 457)
= GCD(157, 457)
= 457
Therefore, the GCD of 2557 and 457 is 457, and thus the solution to the equation is X = 457/2557.
3 (b) To find all solutions to the equation 50114⋅Y=8114 for Y∈Z114, we need to rewrite the equation in terms of ordinary integers, since the inverse of 50114 does not exist. The equation can be rewritten as Y = 8114/50114 = 8114/(5114⋅2114) = 4114/5114. This equation is the same as the one in part (a), with 25 replaced by 5. Thus, the solution to this equation is Y = 4114/5114, which is the same solution found in part (a). Therefore, there is only one solution to this equation, and this solution is Y = 4114/5114.
Learn more about Euclid's algorithm
brainly.com/question/13443044
#SPJ11
1. Analytical Vehicle Modeling - Part I. Develop a single mass - single energy absorber model of a 2021 Volkswagen ID.4 subjected to a frontal crash. Analysis of crash test data suggests that the loading stiffness of the energy absorber is 993.5 N/mm. The unloading stiffness of the energy absorber is 18,027 N/mm. The energy absorber develops only compression forces. The vehicle mass is 2305 kg. Damping is insignificant a. Derive a closed form solution for displacement, velocity, and acceleration as a function of vehicle mass, initial velocity, and energy absorber loading-unloading spring constants. These will be piecewise equations covering the loading, unloading and separation phases. Include the derivation in an appendix to the white paper. b. For initial speeds of 30, 35, and 40 mph, compute and plot occupant compartment displacement, velocity, and acceleration versus time. Overlay all displacement curves on a single plot, all velocity traces on a single plot, and all acceleration traces on a single plot. Tabulate the peak displacement, peak acceleration, rebound velocity, time of max displacement, and time of vehicle-barrier separation. Compare. c. Validation. Compare the results of your model at 35 mph with ID.4 both graphically and by tabulating the parameters listed above.
For initial speeds of 30, 35 and 40 mph, displacement, velocity and acceleration can be computed.
The single mass - single energy absorber model of a 2021 Volkswagen ID.4 subjected to a frontal crash can be solved using a piecewise equation which will consist of three phases: loading, unloading and separation. The loading stiffness is 993.5 N/mm, the unloading stiffness is 18,027 N/mm and the vehicle mass is 2305 kg. The closed form solution for displacement, velocity and acceleration as a function of vehicle mass, initial velocity and energy absorber spring constants can be written as follows:
Displacement:
Loading phase:
$x_1(t) = \frac{F_{crash}}{m}t^2 + v_{in}t$
Unloading phase:
$x_2(t) = \frac{F_{crash}}{m}t^2 + v_{in}t - \frac{K_u}{m}t^2$
Separation phase:
$x_3(t) = \frac{F_{crash}}{m}t^2 + v_{in}t - \frac{K_u}{m}t^2 - \frac{K_u}{m}t^3$
Velocity:
Loading phase:
$v_1(t) = \frac{2F_{crash}}{m}t + v_{in}$
Unloading phase:
$v_2(t) = \frac{2F_{crash}}{m}t + v_{in} - \frac{2K_u}{m}t$
Separation phase:
$v_3(t) = \frac{2F_{crash}}{m}t + v_{in} - \frac{2K_u}{m}t - \frac{3K_u}{m}t^2$
Acceleration:
Loading phase:
$a_1(t) = \frac{2F_{crash}}{m}$
Unloading phase:
$a_2(t) = \frac{2F_{crash}}{m} - \frac{2K_u}{m}$
Separation phase:
$a_3(t) = \frac{2F_{crash}}{m} - \frac{2K_u}{m} - \frac{6K_u}{m}t$
For initial speeds of 30, 35 and 40 mph, displacement, velocity and acceleration can be computed and plotted versus time. The peak displacement, peak acceleration, rebound velocity, time of max displacement, and time of vehicle-barrier separation can be tabulated and compared. The results of the model at 35 mph can be validated graphically and by tabulating the parameters listed above.
Learn more about piecewise equation
brainly.com/question/26386963
#SPJ11
Determine the measure of each arc or central angle.
1.m(arc)MN
2.m(arc) QR
3. m(arc) NQR
4.m (Arc) MRP
5. m(arc) NQ
6.m (arc) MR
Answer:
Step-by-step explanation:
First off, we need to remember that the arc measure is equal to the angle measure inside the circle. That means m(arc) MN is 70 degrees. Knowing this, we can find the measures of the other arcs:
m(arc)NP = 180 - 70 - 30 = 80
m(arc)QR = 70 based on vertical angles principle
m(arc)MR = 80+30 = 110 based on vertical angles and angle sum principles
Now we can list the answers using this:
1. 70
2. 70
3. 180
4. 210
5. 110
6. 110
Hope this helps!
Answer fast!!!! Please!!!!!
According to the information, ball B is the one that reaches the highest height because after 1.5 seconds it has a height of 13m, while ball A has a height of 12m.
How to identify the ball that reaches higher?To identify the ball that reaches the highest we must solve the function shown. Additionally, to know what is the greatest height we must replace the value of x by 1.5 as shown below:
f(x) = -4.9x² + 14.7x + 0.975f(x) = -4.9 * 1.5² + 14.7 * 1.5 + 0.975f(x) = -4.9 * 2.25 + 22.05 + 0.975f(x) = -11.025 + 22.05 + 0.975f(x) = 12According to the above we can infer that this function gives a height less than the one shown in the table because the height of the ball is 12 and that of the table is 13. So 12 < 13.
Learn more about functions at: https://brainly.com/question/12431044
#SPJ1