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Sean

Questions and answers by Sean

Questions (339)

2. A pool has an area A = 50 m2 and depth h = 2.5 m. The pool is filled with water to the maximum height. An electrical pump is
1. 5 answers
2. 4,558 views
A mass of 0.55 kg attached to a vertical spring stretches the spring 36 cm from its original equilibrium position.The
1. 4 answers
2. 11,634 views
The area of a triangle is 600 square feet. Find the altitude, in feet, of the triangle if the length of the corresponding base
1. 5 answers
2. 1,695 views
A cord passes over a weightless and frictionless pulley. Masses of 200 g and 300 g are attached to the ends of the cord. Find
1. 5 answers
2. 2,727 views
Refer to the passage from Benedict de Spinoza's On the Improvement of the Understanding, translated by R.H.M. Elwes. The last
1. 4 answers
2. 1,646 views
Hi!i need some help with this ASAP! a body is projected upwards from a point on level ground with a velocity of 45 m/s at an
1. 1 answer
2. 456 views
a shell is fired with a velocity of 75 m/s at an angle of 55 degrees to the horizontal. calculate the* horizontal and vertical
1. 1 answer
2. 440 views
a ball is thrown at 15m/s at an angle of 30 degrees to the horizontal , how far does it travel horizontally before making
1. 1 answer
2. 431 views
a shell is fired with a velocity of 75 m/s at an angle of 55 degrees to the horizontal. calculate the* horizontal and vertical
1. 1 answer
2. 471 views
Jim can fill a pool carrying bucks of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1
1. 2 answers
2. 554 views
a lunar landing module is descending to the moon's surface at a steady velocity of 10 m/s. At a height of 120m, a small object
1. 3 answers
2. 2,921 views
Why does sodium chloride not conduct electricity as a solid but when melted, does conduct electricity?Thanks Solid NaCl consists
1. 1 answer
2. 921 views
integral of tan^5(2x)sec^3/2(2x)dxY^11/11 - 2/7Y^7 + 1/3Y^3 where: Y = (1 + u^2)^(1/4) and: u = tan(2x)
1. 1 answer
2. 428 views
"Lactose is made up of 1 mol glucose & 1 mol galactose with a glycosidic c-1 to c-4 linkage..."Please explain to me what a
1. 1 answer
2. 487 views
tocainide – a drug that has been used to restore a regular heartbeat in patients with arrhythmia..............................
1. 1 answer
2. 524 views
After helping me to understand this, could you please tell me the specific names for these functional groups:AMINE: NH2 AMIDE:
1. 1 answer
2. 918 views
What are different kinds of congruents?There are hundreds of types of congruence. You would need to be more specific. Some
1. 1 answer
2. 1,177 views
In what ways has learning about the environment changed the way you feel about living more sustainably? What information in this
1. 1 answer
2. 658 views
x^2+x-kfind all positive values for k, if it can be factored Allowed values of k for for the expression to be factorable with
1. 1 answer
2. 553 views
I am supposed to do an essay on compartmentalization of cell respriation but i don't know what it means. my essay is as follows:
1. 3 answers
2. 1,209 views
Why does cell respiration have three steps that occur in three different places?
1. 1 answer
2. 353 views
What are the 5 characteristics of all living things? What do all living things need?
1. 2 answers
2. 602 views
What is a first person point of view?
1. 1 answer
2. 395 views
Find g(f(x))Where f(x)=2x^2-1
1. 1 answer
2. 258 views
Find g(f(x)) and f(2g(x))where f(x)=2x^2-1 and g(x)= the absolute value of x-1
1. 1 answer
2. 240 views
The distance between two telephone poles is 50.0 m.When a 1.00-kg bird lands on the telephone wire midway between the poles, the
1. 4 answers
2. 1,316 views
y = *The Integral Of sin(4e^t)dt*a = 0 b = ln(2x) I'm supposed to find the derivative of y with respect to x. Except I just
1. 1 answer
2. 385 views
Find the exact solutions to each equation for the interval [0,360)2cosx-secx = 1
1. 3 answers
2. 1,439 views
X Y-2 5 -1 10 0 15 1 20 2 25 Write an equation that explains the relationship between the average X and average Y.
1. 1 answer
2. 297 views
Derivative of Inverse Trigonometric Functionsf(x) = sin(arccos(4x)) What is f'(x)?
1. 4 answers
2. 1,005 views
Derivative of Inverse Trigonometric Functionsf(x) = cos(arcsin(2x)) What is f'(x)?
1. 5 answers
2. 856 views
how do i calculate theoretical yield?
1. 1 answer
2. 341 views
hwo do i calculate theoretical yield?
1. 3 answers
2. 477 views
What is the total moles of ions in 500 mL of 0.120 M Ca(NO3)2?how would i calculate this? thanks.
1. 3 answers
2. 368 views
(24cos(8x))/(1+(sin^2(8x)))Integrated from (pi/16,-pi/16
1. 3 answers
2. 386 views
How would I integrate(4dt)/(sqrt(15-2t-t^2)) That thing has me stumped.
1. 1 answer
2. 300 views
How would I find the Integral of3dx/(10x^2-20x+20) I've been stuck on this, and would like an answer ASAP.
1. 6 answers
2. 555 views
How would I integrate(4dt)/(sqrt(15-2t-t^2)) That thing has me stumped.
1. 1 answer
2. 316 views
My Calculus class just started Partial Fractions, and I understand MOST of it.I'm having a slight problem though, when either C,
1. 6 answers
2. 603 views
I think- and this is just out loud- that you would do (Cx + D) Over the X^2 + 2?Am I getting that right? OR You have Cx + D over
1. 1 answer
2. 255 views
What is the indefinite integral of:(12sin(3x)cscx)dx If I could have two things given to me please, I'd be grateful. The two
1. 3 answers
2. 715 views
What is the integral of arctan x?
1. 3 answers
2. 394 views
A basketball is thrown horizontally with an initial speed of 4.20 m/s. A straight line drawn from the point to the landing point
1. 4 answers
2. 4,333 views
On a hot summer day, a young girl swings on a rope above the local swimming hole. When she lets go of the rope her initial
1. 5 answers
2. 4,468 views
What is the integral of7e^(7t) Divided By e^14t+13e^7t+36 Using partial fractions
1. 5 answers
2. 512 views
How would you find theIntegral of (cos(x\8))^3, defined from -(4 x pi)/3) to (4 x pi)/3)
1. 7 answers
2. 375 views
I know I've probably flooded the site or something (Sorry if I have), it's just that these problems aren't similar to anything
1. 3 answers
2. 546 views
Integral of (dt/[sqrt(t)+25tsqrt(t)]}From 1/75 to 3/25 I'm at a complete loss at what to do.
1. 1 answer
2. 283 views
I'm supposed to find the expression 'y', when(x^2+100)y'=23 When y(10sqrt(3))=0 Also, I have to find the indefite integral of
1. 3 answers
2. 512 views
Here's my first question: (FIrst part courtesy of Count Iblis)Integral of x sqrt(19x-7)dx ? Write the integral in terms of
1. 4 answers
2. 454 views
Evaluate the limit as x -> Infinity[5x-sqrt(25x^2+4x)] Direct substitution yields the indeterminate form Infinity - Infinity.
1. 7 answers
2. 1,035 views
Can someone provides me a fews website on this topic: Discuss the transformation from agriculture to industrial of United States
1. 1 answer
2. 439 views
what conclusion can be drawn about the puritan population based on the description of the crowd gathered at the prison?
1. 1 answer
2. 489 views
what was hester's crime and punishment?
1. 2 answers
2. 496 views
what is the effect of the "dame of fifty" being the first to introduce hester to the readers?
1. 1 answer
2. 460 views
I came across this problem in my homework, and I was wondering if partial fractions would be rational for this problem.Int
1. 3 answers
2. 1,215 views
I am taking an AP class for the first time. How does this differ from regular classes and what should I expect. (11th grade)
1. 6 answers
2. 612 views
What questions should I ask Andrew Jackson if I were to interview him about his presidency?
1. 6 answers
2. 1,226 views
300 exercise books are arranged into 3 piles. The first pile has 10 more books than the second pile.The number of books in the
1. 3 answers
2. 356 views
PLEASE HELP.I am sorry. I posted the question wrong earlier this evening.Instead of 300 it should have read: 3000 exercise books
1. 3 answers
2. 351 views
drwl,thanks so much for your help. You are right I do not understand the method that you used. I was trying to do it the way you
1. 1 answer
2. 337 views
Given the axioms:ln x = definite integral from 1 to x of 1/t dt ln e = 1 Given the theorems: ln a^r = r * ln a (for all real
1. 4 answers
2. 660 views
Limit as n approaches infinity:[(n + 3)/(n + 1)]^n How do I even start this?
1. 3 answers
2. 304 views
Limit as x approaches infinity of(2^n + 3^n)^(1/n)
1. 4 answers
2. 382 views
If there is a recursively defined sequence such thata<sub>1</sub> = sqrt(2) a<sub>n + 1</sub> = sqrt(2 + a<sub>n</sub>) Show
1. 7 answers
2. 2,409 views
Where does this infinite series converge:Sigma (k = 1 to infinity): 1/(9k^2 + 3k - 2)
1. 7 answers
2. 3,439 views
Convert this series to closed form:Sn = ln(1 - 1/4) + ln(1 - 1/9) + ln(1 - 1/16) + ... + ln(1 - 1/(n + 1)^2)
1. 4 answers
2. 594 views
Starting with S = k<sub>B</sub> * ln WDerive S = (U(T) - U(0)) / T + N * k<sub>B</sub> * ln q(T)
1. 1 answer
2. 295 views
When a sample is above critical temperature and above critical pressure, it is a supercritical fluid.What happens when a sample
1. 2 answers
2. 928 views
In my physical chemistry book, I'm reading about "Margules Equations":ln γ<sub>A</sub> = Βx<sub>B</sub><sup>2</sup> ln
1. 1 answer
2. 491 views
What does the following infinite series starting at k=2 converge to: Σ ln (1 - 1/k^2)In other words, what does this converge
1. 4 answers
2. 551 views
Which of the following is a Lewis acid?(For polyatomic species, consider the Lewis acid behaviour of the central atom). a. ) NH3
1. 4 answers
2. 1,276 views
The reaction between 0.045 g of calcium with an excess of water was carried out in an ice calorimeter as used in this lab. The
1. 2 answers
2. 753 views
How can I prove that sqrt(x) > ln x when x > 0?I can quickly see this graphically and intuitively, but how do I do a proof?
1. 4 answers
2. 967 views
If Σ 1/k^2 from k=1 to infinity = pi^2/6Use that to show that Σ 1/(2k-1)^2 from k=1 to infinity = pi^2/8
1. 1 answer
2. 266 views
With Taylor/Maclaurin polynomialsUse the Remainder Estimation Theorem to find an interval containing x = 0 over which f(x) can
1. 1 answer
2. 468 views
limit of (10^n)/(n!) as n->infinityThe answer is zero. Can you prove it?
1. 1 answer
2. 323 views
y = (1+x)/(1-x)How do I rearrange that equation to be: x = (y-1)/(y+1)
1. 3 answers
2. 332 views
Can someone prove (informally) the following theory:If there is a differentiable function, f, that is represented by a Taylor
1. 1 answer
2. 399 views
Obtain the MacLaurin series for 1/(2-x) by making an appropriate substitution into the MacLaurin series for 1/(1-x).------------
1. 5 answers
2. 1,235 views
I want to get the first four terms of the expansion of this expression(x - x^3/3! + x^5/5! - x^7/7!)^2 I already got the answer:
1. 7 answers
2. 480 views
why do you think such communities get little attention from the U.S. mass media ?
1. 6 answers
2. 468 views
Are you surprised that such poverty exists in the US
1. 3 answers
2. 340 views
A raffle is being conducted with 50 tickets to be sold - one per customer.There are three prizes to be awarded. If the four
1. 3 answers
2. 794 views
Cars arrive at a toll booth according to a Poisson process with mean 80 cars per hour.How long can the attendant's phone call
1. 7 answers
2. 5,193 views
Given that lim x-> +infinity of (1 + 1/x)^x = eShow that lim x-> +infinity of (1 + k/x)^x = e^k
1. 3 answers
2. 322 views
The probability distribution function for a normal distribution isf(x) = 1/(σ*sqrt(2*π))*e^[-(x-μ)^2/(2*σ^2)] How do I
1. 1 answer
2. 361 views
why understanding how to use a map is important?
1. 3 answers
2. 365 views
---LINEAR TRI-SYSTEM---Please explain how to do this problem because I already have the answer as (0,4,-2) 5x+y-z=6 x+y+z=2
1. 1 answer
2. 346 views
Can someone use mod to prove that 10^(3n + 1) cannot be represented as the sum of two cubes.And make it very detailed please.
1. 2 answers
2. 501 views
I want to self-study Fourier Transforms followed by signal analysis and Wavelets.I am considering buying the books: "Fourier
1. 4 answers
2. 514 views
How would I calculate the definite integral of e^(-k/2*x^2) dx over the interval of (0,+∞)I know the answer is sqrt(pi/(2k)),
1. 1 answer
2. 383 views
how do I find all real solutions of this quadratic equation.w^2 = 3(w - 1)
1. 4 answers
2. 824 views
A square plot of land has a building 60ft long and 40ft wide at one corner. The rest of the land outside the building forms a
1. 5 answers
2. 5,801 views
Candy and Tim share a paper route. It takes Candy 70min to deliver all the papers, and it takes Tim 80min. How long does it take
1. 5 answers
2. 1,954 views
If one person can finish mowing a field in 4 hours and another person can finish mowing a field in 8 hours. How long do you
1. 4 answers
2. 430 views
For the multinomial distribution:Show that summation of the probability mass function across all possible values equals 1. Show
1. 1 answer
2. 327 views
What is the importance of the "plains"?
1. 1 answer
2. 301 views
Joint probability density function is: x + y where 0<x<1 and 0<y<1 (0 elsewhere)Find variance of (30x + 25y) Answer is 11.48 ---
1. 1 answer
2. 1,030 views
We can actually use the Zeros Theorem and the Conjugate Zeros Theorem together to conclude that an odd-degree polynomial with
1. 3 answers
2. 693 views

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