David

This page lists questions and answers that were posted by visitors named David.

Questions

The following questions were asked by visitors named David.

Driving down a mounain Jim finds that he has descended 1800FT in elevation by the time he is 3.25 mi horizontally away from the top of the mountain find the slope of his decent to the nearest hundreth. I am sorry that you did not get a response to your po...

Calculate the molality of HCl in an aqueous 12M HCl solution that has a density of 1.20g/mL

A passenger on a train traveling 90km/h on a straight, level track notes that it takes another train (180 m long and moving with constant velocity) 4.0s to pass by. What is the velocity of that passing train relative to the ground? **please include explan...

I need to know how to make conversions and compare within the metric system of measurement. Such as 0.75L. is equal to how many mL. I have to do problems like that with length, weight, andvolumn.

Why are racial imbalances in our economy difficult to overcome?

What are some solutions the the economic challenges of Aferican Americans?

The summ of two numbers is two. THe difference between eight and twice the smaller number is two less than four times the larger. Find the two munbers.

Can anyone provide help with finding a site that shows how American pop culture has influenced art throughout the world?

I have to show that for any (pi)A, Sin(A)squared + Cos(A)squared = 1. I don't really get the question... am I supposed to multiply A by pi? Even if that weren't the case, I still do not comprehend how the squared sine and cosine will cancel out... I'd rea...

The question is, if f(x) is equal to the series from n to infinity of a sub n times (x-7)^n for all n, find a formula for a sub 10. (I apologize for typing it out in the way that I did, but it was the only way I could. I don't quite understand what is bei...

Metallic sodium adopts a body-centered cubic structure at 25 degrees C and 1 atm. The density of sodium under these conditions is 0.97 g/cm^3. What is the unit cell length?

The brakes on a car permit it to decelerate at the rate of -8.0m/s^2. How much distance is required to stop this car when it is travelling 60.0km/hr? The answer given is 173.6m I solved it this way 60km/h = 16.667m/s A=V/T 16.667m/s / -.80m/s^2 = 20.834 s...

In running a regression model with three variables, two of the three come back as statistically significant at the 95% level of confidence. The one that doesn't is the intercept - so is my model still valid?

A 19 m long piece of wire of density 8.34 g/m3 has a diameter of 12.593 mm. The resistiv- ity of the wire is 1.7e-8(ohm)(m) at 20 degrees celsius. The temperature coefficient for the wire is 0.0038(degrees celsius)^-1. Calculate the resistance of the wire...

What architectural wonder was completed in 1648?

What is the climatic issue that significantly influences the Indian subcontinent?

of Hindusim and Buddhism which has a definite indentifiable start?

How did the extinction of the Mesozoic marine megafauna allow evolution of cetaceans?

I have 3 questions, and I cannot find method that actually solves them. 1) Integral [(4s+4)/([s^2+1]*([S-1]^3))] 2) Integral [ 2*sqrt[(1+cosx)/2]] 3) Integral [ 20*(sec(x))^4 Thanks in advance.

I've set a problem up, something like this. s^4: A+D=0 s^3: -2A+B-3D+E=0 s^2: 2A-B+C+3D-3E=0 s^1: -2A+B-D+3E=4 s^0: A+C-E=4

I made this question, just wanted to make sure it didn't drown under the tide... I've set a problem up, something like this. s^4: A+D=0 s^3: -2A+B-3D+E=0 s^2: 2A-B+C+3D-3E=0 s^1: -2A+B-D+3E=4 s^0: A+C-E=4 It's easier to substitute for s the values that ma...

I made this question, just wanted to make sure it didn't drown under the tide... I've set a problem up, something like this. s^4: A+D=0 s^3: -2A+B-3D+E=0 s^2: 2A-B+C+3D-3E=0 s^1: -2A+B-D+3E=4 s^0: A+C-E=4 Count Iblis -It's easier to substitute for s the v...

What does the density potential (also known as the electrostatic potential) measure? What do the colors on the images indicate?

For the following balanced equation: 2Ag+(aq) + Cu(s)<->Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? A. Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) B. Ag+(aq) | Cu2+(aq) || Cu(s) | Ag(s) C. 2Ag+(aq) | Cu2...

During a short circuit, why does the voltage go down? I know that the resistance is almost zero...but what's the relation between resistance and voltage?

Can someone show me all the combinations possible with these things A B X Y LB RB LT RT L R U D

Simplify this problem: (1/2m^4n^5)^2

Simplify: 24w^7t^4/6w^9t^2 And How Exactly do u do this? I got 4w^16t^6

Simplify: (n/4)/(n/m) As my answer I got: 4m Is this response correct? If not, please let me know what I did wrong.

I'm totally stuck on this problem!! Simplify: (2a^2+13a-7/3a^3-27a)(4a^2-1/9a^2)

No, I'm sure the problem is written like this: [(3a^3-27a)/(2a^2+13a-7)]/[9a^2/4a^2-1)] And to divide you multiply by the reciprocal. So i still don't get the problem I also know to factor, but I'm stil confused.

What part of speech is the word "Below" used in the following sentence. Below the main level, we have a large playroom.

During a recrystalliztion experiment, a student allows the hot solution to cool to room temperature, then chills the solution in an ice bath. Is the student using correct recrystallization technique? Why does the student not simply chill the hot solution...

Explain whether or not each of the following pairs of solvents might be useful as a solvent pair for recrystallization. (a) ethanol-methanol (b) hexane-cyclohexane (c) acetone-ethanol (d) water-ethanol (e) water-cyclohexane

explain how the rate of crystal growth can affect the purity of a recrystallized compound

Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). How do I solve this problem?

Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). How do I solve this problem? I understand this so far f(a)=f(a+15) 1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7) I am lost after that This is a multiple choice question and I am not getting any of...

You go to an auction and set a maximum price of $100 you are willing to bid on an item. However, you are fortunate and purchase it for $50. 1) Does the lower price alter the marginal utility you originally placed on the item? 2) Is your potential total ut...

Someone was kind enough to help me with this question, but i was still confused on how they helped me with the first part of my question. The original question was: You go to an auction and set a maximum price of $100 you are willing to bid on an item. Ho...

Imagine there are 100 lockers. Each locker is given a number 1-100. When the students are assigned to their lockers, the 1st student runds down the row of lockers and opens every door, student #2 closes the doors of locker #'s, 2,4,6,8, etc. to the end of...

I just need some example of fixed and variable inputs.

If firms in perfect competition all pay the same price for resources and all receive the same price for outputs, how can they have different total profits or different profits per unit sold?

A physician prescribed 5mg/kg q day of a drug for a patient that weighs 132 pounds. How many 100mg tablets will be needed for a 2-week prescription?

The dose of gentamicin sulfate is 1.7mg/kg. How many mls of an injectable solution containing 40mg/ml should be administered to a person weighing 220 pounds? Any help is appreciated.

Leaving Home(the play)proves that the family structure is by far the greatest cause of people's social dysfunctioning. say why you agree or do not agree with this statement.

Please correct the verb tenses in the following paragraph Alceste, le gros copain de Nicolas, se passionne pour la nourriture. Chaque fois qu’il sort avec ses amis il a envie de manger. La semaine dernière ses amis et lui ont décidé d’aller au match de fo...

I need help on the following question. Suppose that you are the manager and sole owner of ahighly leveraged company. All the debt will mature in one year. If at that time the value of the company is greater than the face value of the debt, you will pay of...

A Lesson Before Dying- Quotations Analysis. " I had gone to barbershops;I had stood on street corners, and i had gone to many suppers in the quarter.But i had never really listened to what was being said.Then i began to listen, to listen closely to how th...

Are condominiums taxable or exempt

Has anybody read this book? I have a few questions to ask, I've read the book but forgotten a few things reply ASAP!

You have a mean score of 86 on 9 quizzes. The teacher decides to drop your lowest quiz score to determine your final quiz mean. After dropping the lowest score, your mean score on the 8 remaining quizzes is 88. What score was dropped?

a 16.2 L sample of CO(g) at 1.50 atm and 200.*C is combined with 15.39g of Fe2O3(s), How many moles of CO(g) are availabe for the reaction

Determine the required nominal diameter of a threaded steel rod to carry an axial load of 16,000 pounds in tension if the tensile stress of 20,000 psi is permitted.

5. Two pieces of steel are held together with six bolts. One end of the first piece of steel is welded to a beam and the second piece of steel is bolted to the first. There is a load of 54,000 pounds applied to the end of the second piece of steel. The te...

According to the formula, Bond price= y/r so bond price has a inverse relationship with interest rate.i.e. interest rate increases, bond price decreases. But why does it contradict with this demand-supply anysis: r(interest rate increases)--> returns from...

if Bond price= the discounted value of all the future income it will generate then does it mean that the buyer of the bond earn nothing? Because he in fact need to pay the discounted value of the future income(interest) which is said to be earned by him w...

antiderivative of (x-2)/(x-1)

Two independent events, A and B, satisfy Pr(A) = 0.6 and Pr(B) = 0.3. In the case of Pr(A or B), why isn't the answer 0.3? We are looking at the probability of A or B. I choose B. Thank you!

My teacher gave us this equation, and I can't remember how to use it. It's for Simple and Compound Interest. Future Value=d[((1+i)^n-1)/i] d=deposit each time period i=rate per time period n=number of time periods

Suppose that a college admissions office needs to compare scores of students who take the Scholastic Aptitude test(SAT) wit those who take the american college test (ACT). Suppose that among the college's applicants who take the SAT, scores have a mean of...

How do we perform complex actions that apparently require no thinking?

hey, I am trying to write an essay for my university english class but I cannot find any good literary criticism databases. I went to mla international bibliography but couldn't find anything. I am trying to write an essay on the Fall of american dream fo...

What is going on in the hexane layer at the end of the Group I anion experiment? (when color of hexane layer is yellow you have Br- and when it is brown or purple you have I-.) please explain

What would be the advantages and disadvantages of using tribasic sodium phosphate (aka trisodium phosphate) to soften water by removing calcium ions?

The experiment that I did in lab consisted of performing a qualitative analysis of group 1 and 2 cations and anions. The first thing that I did was to add 5 drops of 3M HCl, centrifuge it, and to observe whether a precipitate would form. It did and in the...

IN my experiment, I was doing a qualitative analysis of Group I and II anions using a flowchart. IN the chart I added 5 drops of 0.1M AgNO3 and several drops of 3M HNO3 to 5 drops of solution and found that a precipitate was formed. Thus it was classified...

A diver jumps off a dving board and does a twisting manuever. In the midst of his jump in the air, the diver cannot change his a. Rotational Energy b. Rotational Speed c. Rotational Inertia d. Angular momentum I say d just want to make sure

The Angular momentum of an object that spins is determined by a. the rotational speed b. the mass of the object c. the choice of the axis of rotation d. all of the above I say d based on the fact that momentum =r*p where p is mv and r takes into account t...

There is a net net torque that is applied to a rigid object. What happens? a. the angular momentum of the object will change b. the kinetic energy of the object will change c. the object will experience an angular acceleration d. the rotational inertia of...

An ice skater, has a rotational inertia of I = 4 kg m2, and spins at 2 rad/sec. She then changes her rotational inertia to 2 kg m2. What is her final angular velocity? a. 4 rad/s b. 2 rad/s c. 2.8 rad/s d. 8 rad/s I say B, am i right?

An ice skater, hasa rotational inertia of I = 4 kg m2, and spins at 2 rad/sec. Her rotational inertia then undergoes a change to 2 kg m2. Which of the following is true? a. Her angular momentum remains the same b. Her angular velocity increases c. Her kin...

What are the current challenges facing the World Trade Organization (WTO)?

Which statement about structure and bonding is INCORRECT? a. ) The bond length is the internuclear distance. b. ) The covalent bond is a region of high electron charge density between two atoms. c. ) Hybrid orbitals are combination of atomic orbitals. d....

1. Mr. Kane recently borrowed $15,000 from his Aunt Jemima, and he has promised to pay his aunt $5,000 per year at 15%. How long will it take Mr. Kane to pay off the entire loan from his aunt? 2. You just borrowed $1,000 from Mr. Loan Shark. Mr. Shark req...

This question is based on the book "The Curious Incident of the Dog in the Night-time" by Mark Haddon. What do you think makes a hero? How does Christoper fit your idea of a hero? He has been described by some readers as "a new kind of hero" or "an unlike...

Suppose that the governmental authorities wished to decrease use of a pesticide that is leaching into groundwater supplies in a watershed by 60% from current use levels. Discuss the advantages and/or disadvantages of distributing marketable pesticide perm...

A study has shown that the thickness of sheet steel follows an approximately uniform distribution from 20 to 50mm. What is the probability that a sheet of steel chosen at random will be between 20 and 30mm?

A tunnel of length L=150m, height H=7.2m, and width w=5.8m (with a flat roof) is to be constructed at a distance d=60m beneath the ground. The tunnel roof is be entirely supported by square steel columns, each with a cross sectional area of 960 cm^2. The...

After falling from rest at a height of 29.2 m, a 0.488 kg ball rebounds upward, reaching a height of 20.3 m. If the contact between ball and ground lasted 1.68 ms, what average force was exerted on the ball? I'm so confused on where to start. tyvm

I am having trouble figuring out my accounts payable and capital. Any help on going about and solving this would be greatly appreciated. I have listed the data below... Travis Fortney, an architect, opened an office on April 1, 2010. During the month, he...

Calculate the terminal speed of a wooden sphere(density 0.830g/m^3) falling throught air if its radius is 8.00cm and its drag coefficient is 0.500? From what height would a freely falling object reach this speed in the absence of air resistance?

how many guests were present at a dinner if every two guest shared a bowl of rice, every three guests shared a bowl of broth, every four guests shared a bowl of fow, and 65 bowls were used together.

An airline passenger feel asleep halfway to her destination. When she awoke, the distance remaining was half the distance traveled while she slept. How much of the entire trip was she asleep?

If you place one full container of flour on one pan of a balance scale and similar container 3/4 full and a 1/3-pound weight on the other pan, the pans balance. How much does the full container of flour weight?

A young man spent 1/4 of his allowance on a movie. He spent 11/18 of the remainder on after-school snacks. Then from the money remaining, he spent $3.00 on a magazine, which left him 1/24 of his original allowance to put into savings. how much of his allo...

Find a function that models the area A of a circle in terms of its circumference C.

A woman 5 ft tall is standing near a street lamp that is 12 ft tall. Find a function that models the length L of her shadow in terms of her distance d from the base of the lamp.

Height: The volume of a cone is 100 in^3. Find a function that models the height h of the cone in terms of its radius r.

Maximizing Area: Among all rectangles that have a perimeter of 20 ft, find the dimensions of the one with the largest area.

Minimizing Sum: Find two positive numbers whose sum is 100 and the sum of whose squares is a minimum.

How much space (in ft³ ) will be taken up by the 458 balloons.

Find (f + g)x, (f-g)x, (fg)x, and (f/g)x and their domains. f(x) = ¡î(9-x©÷), g(x) = ¡î(x©÷-4)

Find (f + g)x, (f-g)x, (fg)x, and (f/g)x and their domains. f(x)=¡î(9-x©÷),g(x)=¡î(x©÷-4)

I need help finding a current event. The topic is A Famous Person Who Has Done Some Type Of Charitable thing. The article can be anywhere from last thursday to today. Thank You!

Find an angle between 0 degree and 360 degree that is coterminal with given angle. a. 361 degree b. -100 degree c. 1270 degree

Find an angle between 0 and 2Ð that is coterminal with given angle. 1. -7Ð /3 2. 10 3. 51Ð /2

U.S. antitrust enforcement policies have focused on 1) Enforcing market codes of ethics 2) Preventing "golden parachutes" 3) preventing price fixing arrangements 4) forcing firms to produce output at the point where P=MC 5) breaking up any firm with more...

The sum of two decimal numbers is 5.3. Their difference is 1.7, and their product is 6.3. What are the two numbers? Does the product have anything to do with getting the answers?

Answers

The following answers were posted by visitors named David.

(a) 24.02 g C ---------------------- = .20881 x 100%= 115.0322 g BeC2O4-3H2O Ans: 20.881% (b) (i) (ii) PV=nRt -> V=nRT --- P

I have homework in grammar and the title is Giving Instruction in Reponse to Expository Writing Prompts so I have choose an electroni apppliance with which I am familiar with and write directions for a friend that explain an important procedure in the use...

oh but yeah u first use the equation v=v(0)+at and then use y=v(0)t+1/2at^2. Set v(0) to zero each time and a to either -9.8 m/s if it is going upward or 9.8 m/s if it is going downward

Shahadah, Salah, Zakah, Sawm, and Hajj. en(dot)wikipedia(dot)org(forward slash)wiki(forward slash)Five_Pillars_of_Islam

First, we must demand more of our leaders. If we do not get the result you want, change your leaders. Emphasize education. A good education is an important way to improve the odds for any children. The whole community needs to make education a top priorit...

To accept the old into the modern

Use the equation, PV = nRT n = 3mol T = 273K P = 101.325kPa = 1atm R = .08206L•atm/K•mol Solve for V

If I have 1.27 cm^3, how do I convert into picometers?

Because dogs tilt there heads trying to understand what ur saying. But cats they just ignor u.

Yea i thinks its D also... all the other answers are not as good, so im goin with that Palmer. Page 462 is what ive found Right under the purple section...

I want a picture of social health

all I need to know is is it hudusim or Buddism?

Could you expand on #1 a bit more? I tried Partial Fractions, but I couldn't get a definite answer...

I'm not quite sure about your explanation on Partial Fractions... And Liouville's Therom. We haven't done that in class... so...

1) A/x + B/(1+x) 2) A/x + B/x^2 + C/(1+x) I think I'm right....

That's my problem. When I tried solving for A, B, C, D, and E in that first problem, it didn't really work out right...

I'm sorry. I forgot to say that I don't know how to solve for A, B, C, D, and E... Help there would be appreciated.

Would anybody mind showing it out? I tried what Count Iblis said, but it didn't really work out well...

The paragraph after the thing with s as a variable is copy and pasted from Count Iblis.

I'm confused. As soon as I get the so called 'Basic Equation,' I just don't know what to do after....

In the case study of Geletx, what should Jed do? Is this a violation of FCPA?

They are similar. because ALL triangles have and will always have 180 degrees. BOTH of the right triangles have an 90 degrees angle, which leaves 90 degrees left in both triangles than they have an another angle which is less than 90 (x degree) just by kn...

plz ignore the 1st part just plz help with this: what's the relation between resistance and voltage?

No. I think you should work the subject back in, in place of "it" and remove the "s" tacked on to the end of accomplishment

Thank you so much drwls! I can not believe I did not figure that out!

No, you distributed the 4 to the y only. You also need to distribute the 4 to the 8. This would then make the answer 4y+32

No, Problem! Thank you so much for the answer!

No, I'm sure the problem is written like this: [(3a^3-27a)/(2a^2+13a-7)]/[9a^2/4a^2-1)] And to divide you multiply by the reciprocal. So i still don't get the problem I also know to factor, but I'm stil confused.

im having trouble with this problem 6( n - 4 ) = 3n

Just to take the very first term you've listed, are you suggesting that income is a characteristic of a multicultural school? What would that mean - that a multicultural school has income? And if so, is that what you're trying to say? I don't think it is,...

8/h -> infinity as h -> 0, so I don't see how the above expression can tend to anything other than minus infinity.

Can I throw in a note of clarification? Melissa'a answers are actually correct: what's INcorrect is the algebra that apparently gave rise to them. As Bob pointed out, the "16 divided by 6" is actually a measure of inches per car, not cars per inch. Also,...

why are waterfalls tempary features

thanks. i understand why e won't work, but im a little confused on choice a. they both dissolve a wide range of solutes so would it be a great solvent?

well im confused because you said one needs to be great and the other has to be poor. so if you combine both do you get a great solvent or a horrible one?

Now solve for speed of wind in the first equation.. 33km/time=32km/hr-speedwind. How do I do that?

This is a multiple choice question and I am not getting any of the choices a.) -161/8 b.) 120/7 c.) 161/7 d.) -17

Thank you. I will remember the advice in the future:)

I went to an unscramble a word site and came up with this "Zach's Word Unscrambler" Results The scrambled word you entered was "afsedrniru " ... Sorry, No Matches Were Found...

Nope, Kristen is right. It can also be written as 4-methylpent-2-yne but it's the same thing.

this was an exam question...i answer for a) long call option b) long put option. But i got it wrong, the instructor won't tell us the answer, he wants us to figure it out ourselves. But i just don't know. Any guidance would be helpful.

The questioner doesn't want the weighted mean, she wants the mean of the difference. This is equal to the difference between the means, or 0.12.

Thanks bob mind helping me with one more? The questions all ready posted, same subject.

3) Answer (12, 28) 4) Answer (4, 22)

Two pieces of steel are held together with six bolts. One end of the first piece of steel is welded to a beam and the second piece of steel is bolted to the first. There is a load of 54,000 pounds applied to the end of the second piece of steel. The tensi...

My logical deduction is: asset demand for money + transaction demand for money= money demand=supply of bond(as bond issuers create supply of bonds)

And is the bond price=face value?

Oh, these are the variable inputs. d=deposit each time period i=rate per time period n=number of time periods

do u tutor me for my nys test

I think i misunderstood the question.. is it just 1080 - 896

1) Figure out number of grams of silver 3 kilograms X 1000 g/kilogram= 3 X 10^3 grams 2) Figure out number of atoms in 3X10^3 grams of silver 3 X 10^3 grams X 5.58 X 10^21 atoms/gram = 16.74 X 10^24 atoms or 1.674 X 10^25 atoms

Convert all the fractions so that they all have the same denominator (the number below the line). That way, you can tell how big they are relative to one another just by looking at the numerator (the number above the line). (#1.) 2/5, 1/10, and 3/20 can a...

so its A then right

I would say that the rate is 12.5%. btw, this task is just nonsense

For mole composition, you would convert each to moles and then determine the percent of each to the total.

First, start with a balanced equation. Then, use stoichiometry to determine the limiting reactant and then how much product (AgCl) is produced. Use this (theoretical yield) and the actual yield (33.6g) to determine the percent yield.

a. ) The bond length is the internuclear distance. b. ) The covalent bond is a region of high electron charge density between two atoms. c. ) Hybrid orbitals are combinations of atomic orbitals. d. ) There are the same number of hybrid orbitals produced a...

let the width be x and the length be y we know xy = 6 and x^2 + y^2 = (2ã5)^2 = 20 Perimeter = 2(x+y) from algebra we know (x+y)^2 = x^ + 2xy + y^2 but we know the values on the right side, so (x+y)^2 = 20 +12=32 then x+y = ã32 and the perimeter is 2ã3...

Why is math so hard?

Oops I said I could not figure out capital, it was processional fees that I meant to list. Capital is clearly 30,000.

I am sorry I am tired and meant to write professional fees.

60 guest were present at dinner. Is this correct?

I did but i can not find anything.

Yes. Can anyone help me?!?!?!?!? Help!!!!!!!!!!!!!!

it is: -y/x* (2x+y)/(2y+x) let me now if you need more details.

27 / (5+4) * 19 = 27 / (9) * 19=3*19=57. Mom is right.

You are correct. I had the EXACT same Physics problem and got them correct.

Thank you drwls!

sorry i mean which reactant

i got the mass of aluminum chloride to be 42.7

That would make more sense! Many thanks

Use prime factorization.

I should say I cannot get the special notices to work with the colors.

Well I guess no one can help. :/ Oh well, I'll figure it out

That's what I got.

a<9. Not sure about the graph 3a<19+8 3a<27 a<27/3 a<9

I've already done it, thank you. Was wondering if there were any other predictions.

OMG totally didn't see that, thank you!

Its a letter to the editor we are analysing.

This should actually be historian Richard Pipes

Is that correct?

please help me out, thanks

estrogen is one

Also, is got a verb?

#3 solve on the interval [0,2pi]

Complete sentence