Dave

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

Questions

The following questions were asked by visitors named Dave.

Ok, if anyone is able to help me within the next 12 hours or so, that would be wonderful! I think I am going about this problem correctly -- I am not looking for someone to solve this problem for me, but for someone to tell me if I am doing it right... Yo...

How might one separate a mixture of water and salt? A solution of water and salt may be separated, if you don't want the water, by allowing the water to evaporate which will leave the salt crystals behind. If you want the water AND the salt, you may separ...

Rewrite the following sentences, focusing on the grammar area specified in the left column. To enter your answer, click next to the number and begin typing. If the sentence is already correct, write No Change. Punctuation within Sentences—Colon The book h...

What are the most significant similarities between the Chinese American and Japanese American [cultural] experiences? What are the differences? • Choose from any of the following topics when considering similarities and differences: o Level of assimilatio...

What are the most significant similarities between the Chinese American and Japanese American? when it comes to thePursuit of education? Education is a very high priority in all Oriental society.

What are the most significant similarities between the Chinese American and Japanese American [cultural] experiences? What are the differences? • Choose from any of the following topics when considering similarities and differences: o Level of assimilatio...

(a) What is the pH of a 2.0 molar solution of acetic acid. Ka of acetic acid = 1.8 x 10¯5 (b) A buffer solution is prepared by adding 0.10 liter of 2.0 molar acetic acid solution to 0.1 liter of a 1.0 molar sodium hydroxide solution. Compute the hydrogen...

During the process of photosynthesis, solar energy is converted into: a. chemical energy. b. heat energy. c. thermal energy. d. mechanical energy. e. nuclear energy. a

Its difficult to meet the requirements of ceteris paribus when studying a relationship between unemployment and inflation. Is this true or false??? True; When studying the relationship between unemployment and inflation, one must look at empirical, nation...

We use the _________ to determine the purchasing power of income. A. Interest rate. B. Real GDP. C. CPI. D. GDP. E. None of the above. Check this site for your answer. http://www.bls.gov/cpi/

Will the aggregate quantity of goods and services demanded become more sensitive or less sensitive to changes in the price level if an economy becomes closed (that is, as foreign trade disappears)? In terms of the AD/AS diagram, will the AD curve become s...

If Mary takes money from her savings account and buys a T-bond from Jody with that money, it's: A. An expansionary fiscal policy. B. An example of contractionary monetary policy. C. An example of expansionary monetary policy D. An example of neutral (neit...

A man has decided to invest at most $90,000 in securities in the form of corporate stocks. He has three options: blue chip stocks he assumes will yield a 6% return, growth stocks @ 12%, and speculative stocks @ 20%. No more than 25% of his investment shou...

Could someone help me find a medical supply company presentation which involves information about the products, jobs, services, etc available. I would greatly appreciate that!! Thanks

Describe (with calculations) how you prepare 1.00 L of 0.750 M barium hydroxide solution starting with Solid barium hydroxide

Need to know the principal rivers, mountains, and bodies of salt and fresh waters within and around China, Taiwan, Japan, North and South Korea. Thanks.

How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions? Can understanding how to work with one kind of problem help understand how to work another typ...

Can someone check this for me? 1. Where in the US National Income and Product Accounts and the circular flow of expenditure and income do new home sales appear? ANSWER: I said they appear with money going from the households to the goods and services mark...

Using on 3, 11, 21, and 24 only once, and using any combination of divide, multiply, addition, and subtraction, what formula can be created to equal 24?

blank times blank equals 140 what is the two blanks

what do you call a female bug that floats?

using only 15 of these letters,tlpuytsiaaganbrnlrog,what do you call a female bug that floats?

ms.sue whats the answer?to my question? Thanks,Daves dad

The acceleration of a particle at a time t moving along the x-axis is give by: a(t) = 4e^(2t). At the instant when t=0, the particle is at the point x=2, moving with velocity v(t)=-2. Find the position of the particle at t=1/2 if you could show me how to...

Why does effervescence when the Group 2 anion precipitate is acidified imply the presence of (CO3)2- ?

How many Coulombs of charge pass through a 95W amplifier plugged into 110V wall socked over the course of a 2 hour concert?

what word or phrase shows that a conclusion is up ahead

What is a true, non-subjective, factual claim.

A person falls in water at 0 C. After 30 min in the water, he/she suffers from hypothermia, as their body temp drops to 30 C. Since we are water.... we assume the heat capacity is 4.18 J/g/C. 180 Kcal of energy is required to raise the persons temp to 40...

Millikan's oil drop experiment suspended a charged oil drop in an electric field. By measuring the size of the drop and using the oil's density, the weight of each drop could be calculated. This allowed the charge of each drop to be found, which was alway...

Suppose that the typical snowboarder/skier visiting Mount Unknown ski resort on a typical day would be willing to pay for lifts up the mountain according to the following schedule. (see graph …url below) 1. Why does the WTP schedule slope downward ? 2. Su...

Find an equation for (a) the vertical line and (b) the horizontal line through the given point. (-3.14,0)

Discuss the advantages and disadvantages of sole proprietorships, partnerships, and corporations.

Determine the amount to be paid within the discount period for purchase with an invoice price of $7,745, subject to credit terms of 2/10, n30. Explain how you reached your answer.

Show what the final output of this function will be. The answer will be in the form x * Z - y Private Function F(x as Int, y As Int, z as Int) If (y = 1) then Return 2 Else Return x * Z - y + F(x-1,y-1, z) End If End Function

Operator overloading: Array indexing [] – allow for double indexing [][] I'm not sure how to overload the operator[] for double indexing. Please help if you can. Thanks

all of the following can be used to compute profit per unit except: a) price minus avg total cost. b) total profit divided by quantity. c) avg revenue minus avg total cost d) marginal profit minus marginal cost

Which of the following nitrogen oxide molecules and related ions is/are diamagnetic and has/have more than two charge-minimized resonance structures? 1. NO 2. NO2 3. N2O4 4. NO2-

dangling modifiers to paint one's house frequently one must do it oneself All homeowners almost try to paint at one time or another

Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross section. If the radius of curvature of the bump is r = 34 m, find the apparent weight of a 60 kg person in your car as you pass over the top of...

Hi, In this task for our school, we were requested to investigate a method for testing the amount of caffeine content in coffee. There are 3 main questions as fellows 1. What would be a good method to measure the amount of caffeine in coffee without extra...

If the price of electrical enegy is $0.10 per kilowatt *hour, find the cost of using electrical energy to heat the water in a 12.0m * 9.00m * 1.5m swimming pool from 15 degrees C to 27 degrees C. So the change in temperature is 285.15 , the volume is 162m...

Need an answer to this Calculus Question. I keep getting this type of question wrong. Thanks. Differentiate the Function: y = (3x-1)^2(2-x^4)^2 y =

how do i set this problem up? Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant 4.

How do i set this trig problem up? PLEASE help me. Find tan (s + t) given that sin s = 1/4, with s in quadrant 2, and sin t = -1/2, with t in quadrant 4.

The van der waals equation incorporates corrections to the ideal gas in order to account for the properties of real gases one of the correcctions accounts for A.attractions between molecules B.the quantum behavior of molecules C.that average kinetic energ...

for following reaction at equilibrium if we increase the reaction temperature the equilibrium will 2SO3(g)<-->2SO2(g)+O2(g)(deltaH degrees=198kJ) A. not shift B.the question can not be answered because Keq is not given C.shift to the right D. shift to the...

Which of the following is a true statement about chemical equilibria in general A.there is only one set of equilibrium concentrations that equal the Kc value B.eqauilibrium is the result of cessation of all chemical change C.at equilibrium the rate of the...

the van der waals equation incorperates coreections for the ideal gas law in order to account for the properties of real gases. one of the corrections accounts for A.the average kinetic energy being inversely proportional to temperature B. the possibility...

How do you find the vertical and horizontal assymptotes of the graph of the rational function? f(x)= 3x^2-5x+2/6x^2-5x+1 f(x)= 2x+3/(ãx^2-2x+3)

: PROGRAM: PYTHAG : Prompt A, B :Fix 2 ã : (A2 +B2) ¨ C :Disp "C=",C : Float Choose the three true options concerning this program. Options A) The program can be used to find the length of the hypotenuse of a right-angled triangle. B) The program can be...

function y = 4-2(2t+pi/2), where t is measured in radians. A.choose one option which gives the value of the function when t=pi radians B.choose one option which gives the period of the function in radians. a)0 b)1 c)2 d)4 e)pi/4 f)pi/2 g)pi h)2pi

An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +13 m/s and measures a time of 20.5 s before the rock returns to his hand. What is the acceleration (magnitude...

How do I find the x intercepts of the parabola y=x^2-6x-7? Thanks

Hi,how do I find both solutions of the equation cos41 = 0.35 between degrees 0 and 360? Many thanks

A 2.9 kg body is at rest on a frictionless horizontal air track when a horizontal force F acting in the positive direction of an x axis along the track is applied to the body. A stroboscopic graph of the position of the body as it slides to the right is s...

I need a home test corrected before I turn it in on Monday. Can anyone help?

How would I calculate the area of a sector of a circle with radius 2 m that subtends an angle pi/3

2x+2=8 Solve for x

The limit as x approaches infinity of (e^x+x)^(1/x). I got that it diverges, but I'm not sure if I made a mistake. My work: lim(e+x^(1/x)) lim(e+(1/x^x)) lim(ex^x+1)/x^x l'hopital:lim(e^(e(lnx+1))+1)/e^(lnx+1) diverges?

The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?

If the acceleration gravity is 1.6m/2 on the moon and you weigh 539 N on earth, how much do weigh on the moon?

Why do Oxygenated fuels contain less energy than hydrocarbons?

A student dissolved 4.00 g of Co(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the stock solution and then diluted it with water to give 275. mL of a final solution. How many grams of NO3- ion are there in the final solution?...

find function value f(x)=x

Reduce each rational expression x^3-4xy^2/3x^3-2x^2y-8xy^2

A large boulder is ejected vertically upward from a volcano with an initial speed of 41.0 . Air resistance may be ignored.

A 2.50 gram sample of bronze was dissolved in sulfuric acid. The copper in the sample reacted with sulfuric acid to form copper sulfate. Cu (s) +2 H2SO4 (aq) -> CuSO4 (aq) +2 H2O (l) The copper sulfate formed in this reaction was mixed with I to form copp...

You observe a plane approaching overhead and assume that its speed is 700 miles per hour. The angle of elevation of the plane is 16° at one time and 58° one minute later. Approximate the altitude of the plane

The mean starting salary for graduates in the spring of 2004 was $36,280. Assume that the distribution of starting salaries follows the normal distribution with a standard deviation of $3,300. What percent of the graduates have starting salaries between $...

What does the word anti mean? My answer- is opposed to something????? Please help me

Your manager has asked that you reach out to three senior leaders in the organization to build a better understanding of their needs so that your department can better align themselves with these executives’ and build partnerships for new work. Where will...

If ∆ ABC ~ ∆ DEF, BC = 12 cm, EF = 10 cm, and AC = 18 cm, find DF.

blocks A and B weigh 10 lb and 40 lb, respectively. A and B extend over a fixed drum, one on reach side. Determine the acceleration of A and the tension in the cord if the fixed drum is smooth.

A child of mass 40.0 kg is swinging on a swing with ropes of length 4.0 m. How long does it take the child to swing from the maximum height on one side to the other?

Find the speed of a pendulum bob at the bottom of its swing if its initial displacement is 5 degrees and its period is 2 s.

d/dx (x)(e^xy)(cos2x). Product rule lets me take the derivative of f(x)g(x). But three functions?

Can someone please help me to answer the following question? The question below has four choices, but only one correct answer. Could you please help me with the correct answer for this question? Thank you in advance. Question # 1. Find the slope of the li...

My problem I have involves a method that requires using the quadratic equations that comes from India. Here the problem that I have to solve : x to the second power plus 12x minus 64 equals 0 I need someone to walk me through each step to arrived to the a...

In this equation 4(x^2 – 8x) = 4(13), what would the coefficient of x^2 be in this case? Would this be correct 4x1=4? If not, what would the correct answer be?

I do not know how to answer this question. Would someone please help me with each of the four question below? Thank you. Question 1. Write the sample space for the outcomes of tossing three coins using H for heads and T for tails. Question 2. What is the...

Could someone please describe two main differences between classical and empirical probabilities.

Having trouble with these pairs of numbers (20,21,29) - (28,45,53) I am supposed to develop a Pythagorean triple. Here is that I am supposed to use which is a formula that can be used to generate infinite number of generating Pythagorean triples is: a = (...

Does anyone know how can I apply the Pythagorean Theorem to real world situations.

I need someone to help explain how this math problem works. I am not sure how to convert this fraction below to arrive at 100.8 degress. 7/25 .360 degrees=100.8 degrees How did this answer of 100.8 degrees come about in this equation?

César le da consejos a un amigo en su primer día de trabajo porque el director de la cadena tiene muy mal humor. Escucha los consejos y cámbialos a mandatos. Sigue el modelo. Play audio For number 1 this is what the person says 1)el siempre pide que hagas...

do adult men go out to dinner alone more than adult women and what is the percentage of men versus women women dine alone?

A block of mass 5 kg, which has an initial speed of 3 m/s at time t = 0, slides on a horizontal surface. Find the magnitude of the work that must be done on the block to bring it to rest. Answer in units of J.

. Hay una variedad de las bebidas y los postres deliciosos también My teacher marked that sentence down, and according to her there is suppose to be a verb between postres and deliciosos, which i am having trouble figuring out. Can any one help?

Answer the questions negatively, using the imperfect tense. Make sure to include the direct object pronoun when needed. Follow the model. Modelo ¿Juega Daniel al fútbol? No, pero antes lo jugaba. ¿Hablas por teléfono? No hablaba ¿Fue a la playa Susana? no...

I'm asked to find the shortest wavelength photon emitted for the paschen series for the hydrogen atom. I used the Rydberg equation and substituted the appropriate values. Frequency= Rh(1/3^2)-(1/infinity^2) I get an answer of 820 nm. My online homework pr...

x+(xtimes.15)=1725

What is the probability without replacement of drawing at least one ten (52 card deck)?

Add fraction and mixed numbers and reduce to lowest term 9 2/3 3 2/5 3/4 Can someone explain how to solve?

Why are the quadrants situated and numbered the way they are.What is the purpose.

The Roper Organization conducted identical surveys 5 years apart. One question asked of women was Are most men basically kind, gentle, and thoughtful? The earlier survey revealed that, of the 3,000 women surveyed, 2,010 said that they were. The later reve...

Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.3 g of iron are to be dissolved in 1.7 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron?

find the slope of the tangent line to the graph of f at the given point. Graph f and the tangen line. 9. f(x) = 3x +5 at (1.8) 10. f(x)=2x + 1 at (-1,3) Please, help me with this problems. thanks

1. How much potential energy does a 5kg block have if it is 2m above the ground? 2. What is the mass of an object that has 40J of potential energy and is 10m above the ground? 3. What is the weight of an 8kg object? 4. How much work does it take to lift a...

If HOCl has a Ka=3.2*10^-12, what is the pH of 0.1M KOCl?

Answers

The following answers were posted by visitors named Dave.

Also the principal roadways; airports, harbors; and railroads in each region would be very helpful too.

Thanks for all the help. I realize this isn't a site for doing other's homework, but this is not for the purpose of a homework assignment, but for creating a map of East Asia. I am merely trying to source outside help due to time constraints.

Wishful Thinking

2 Cl(g) --> Cl2(g) exo-on H2O(l) --> H2O(g) endo-by 2 H2(g) + O2(g) --> 2 H2O(l) exo-on 2 Li(s) + H2O(l) --> 2 LiOH(aq) + H2(g) endo-by 3 NaN3(s) --> Na3N(s) + 4 N2(g)endo-by

sweet thanks GK!

The test data I'm using is y = 3. I tried using a trace table, but I get back to 2. Not sure how to get an answer in the form x * Z - y. Any help will be much appreciated. Thanks

Yes because if you graph x=4, your line should be vertical and by graphing (4,0), you would get the same answer.

why not #4? that has two resonance structures and it is isoelectronic to ozone which is diamagnetic.

so it wud be (60x9.8-12^2)/34?? = 13.06N??

You need the coefficient

Only 3 of the 9 planets in our solar system have official "discoverers" and "times of discovery". Uranus was discovered by Sir William Herschel in 1781. Neptune was discovered by John Couch Adams in 1846. Pluto was discovered by astronomer Clyde Tombaugh...

P=I/rt Where P=principal(amount invested) I=Interest(amount earned) r=rate t=time So in order to fin the rate the formula can be written: r=I/Pt

escaped; broke loose from; slipped out of

Do you a good source of information

I have limited information in my text and I am having trouble finding a good source specific to this subject.

Do you go to Connections Academy?

thankyou so much

thankyou so much

Actually you are 100% correct and i agree with C. thankyou so much

In my opinion i find that C is also the best answer choice here.

looking for info on like question, if we do not know how to solve it and equation is greek to us, need a step through. whoever posted first obviously doesn't know how to help...

Thanks! Connor looks like he nees some help too.

thats supposed to be a fraction all equel to f(x).

thats supposed to be a fraction all equel to f(x).

Thank you, sir.

Why do oxygenated fuels contain less energy than hydrocarbons?

Hi: I need help with the following physics problem. Can you explain it to me? Thank you, The fastest measured pitched baseball left the pitcher's hand at a speed of 50.0 . If the pitcher was in contact with the ball over a distance of 1.50 and produced co...

Thank you. I figure out the answer for this one. I do have another one.

The gravitational potential energy of the jumper is mgh, where m is 60kg and h is 22m - 1.8m or 20.2m. The PE of the bungee at full length is 1/2kx^2, where x is the difference between stretched and unstretched length, i.e. 20.2m - 12.2m or 8m. Setting th...

Thanks. I was confused by the way the question was worded and my answer was 2 times bigger than what the answer is supposed to be.

Thanks, I couldn't find an equation that derives the max velocity of the pendulum in my textbook.

This is what I am trying to solve for - x2 – 2x – 13 = 0 - x2 - 2x = 13 step (a): move the constant term to right side of the equation 4x2- 8x = 52 step (b): multiply each term of the equation by 4 times the coefficient of x2 – in this case 1x4 = 4 (tryin...

Newtons second law is Force=mass(acceleration) F= 20 N m= 8 kg Newton (N)= kg.m/s^2 20N=8kg(a) a=2.5 m/s^2

a1=8,d=3,n=16 the one is a little below the a

Sammy goes out to play. His Mother tells him to be home by 5:00. Sammy is almost an hour late, but he has an excuse. He says that he got lost. He tells his mother that when he checked his compasd, it was pointing to the west, so he followed a path in that...

Renie gave each of six peopple 1/10 of pizza. Renie has 2/5 of the pizza left. Explain how this is true.

the pressure and temp being constant, you would add 8.00g of helium to the 8.00g to double its volume. If pressure or temp were varied this would not be true.

They said not to contact them till the end of March...

That's very broad. The sorts of things you should be looking at is government spending (welfare (if there is any), impacts on healthcare), un-employment figures, inflation etc. Is there any particular question you're asking?

Hi Bob, just to make sure... I figure out the top and bottom .. and not the left and right .. is that correct?

No. H2SO3 is not present in aqueous solution. The reaction is nonsense.

im confused on how to get the grams to KJ.

!!!!!! Well you keep skipping over my question !!!!!

I did that and it said it was wrong I need the amount after 8 years how do I do that

Yes 1. By attaching to them 2. Active Immunity 3. All of the above 4. Antibodies 5. Antigens They are all correct

Yes 1. By attaching to them 2. Active Immunity 3. All of the above 4. Antibodies 5. Antigens They are all correct also I have something for you 1. According to the MLA style how should you format the title of a magazine article please I need help has any...

Thanks ms.Sue it helped a whole lot

Ans= 16(take out 4 socks from each sock color)

A number in the modulus can't be negative, it will always be positive.

Multiply 8 by 42, So the final answer will be 336.

I am so lost and I have test tomorrow. Thank you to anyone who can help The probability that a person has blue eyes is 16%. Three unrelated people are selected at random. a. Find the probability that all three have blue eyes: b. Find the probability that...

stupid question... A would be: 0.004096 B would be: 0.592704 C would be: 0.112896

0.25 is the correct one

0.5741 are wrong

"about 2 times as accurate" is the right answer

C. 0.0229 is the correct one

0.1818 is the correct one (Believe)

0.1818 is the correct one

After doing the math, how do you figure out if it is oxidizing or reducing? How does the pKa apply?

Chip’s Home Brew Whiskey management forecasts that if the firm sells each bottle of Snake-Bite for $20, then the demand for the product will be 15,000 bottles per year, whereas sales will be 87 percent as high if the price is raised 17 percent. Chip’s var...

20. A projectile is fired with an initial velocity of 88 ft/sec at an angle of 35° to the horizontal. Neglecting air resistance, what is the time of impact? (Round to the nearest tenth of a second.) Remember: x = (v0 cos θ)t and y = h0 + (v0sinθ)t – 16 t^...

Anyone, please?

I just have the the total distance traveled. 7750

I put 5.17km/h because it asks for it in km also i put 0 for avg velocity and that's wrong

If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 1.5 h, a swimmer makes exactly 77 laps in a swimming pool that is 27 m long. Determine the distance the swimmer traveled, the total displacement o...

Could you explain why the length is 28-w?

Anyone know 5)?

THANKS FOR THOSE EIGHT CORRECTIONS !!!

I'm thinking it's a function of saving the money in an account that earns the 12% (compounded monthly) over the 4 year period. $500 saved @ an annual rate of return of 12% (again, compounded monthly) yields $806.11 - or $306.11 of interest, which comes to...

First convert both E^o to dG values then you can add them and reconvert the dG value back to E^o use n=1 for E1 n=2 for E2 and n=3 for Etotal (n=number of electrons transfered)

don't forget when finding the mass for the volume equation you must add the mass of your solute, citric acid. once you find the total mass, then divide by the density to give you the total volume. Then moles of citric acid divided by your total volume giv...

You know weight can be derived from the force of Newtons. 56N/9.8=5.174. That is the weight in kg.

Ugh super easy. The molar mass is 20.1797 g/mol. Use the mass given and divide it by the molar mass. (1.6304 mols)

Is this AP Chem or regular chem?

Not enough info. What do you have .0025L of? Do you have any other info?

Are you asking or telling?

Use PV=nRT. Knowns- V=.944L P=2.26atm T=257K R=(constant) .0821 Enter values into the equation and solve for n (moles)

The molar mass is 325.28804 g/mol. Divide the amount given by the molar mass and that is your # moles. Answer is .2278 moles

I know an alysia at kellam high school.

Convert the percent to a decimal. 50% -> .50 Multiply 36.75 by .50 36.75 * .50 = 18.375 Add 18.375 to 36.75 $55.125 is your answer

You are correct, A.

Convert both to fractions. 7 * 8 + 5 = 61/8 13 * 8 = 104/8 Subtract both fractions 104/8 - 61/8 = 43/8 Convert 43/8 to mixed number 43 / 8 = 5 3/8

The choices are: A. The port of Boston was closed to all ships, and huge numbers of workers lost their jobs. Many people struggled to put food on their tables B. British soldiers were sent to Boston to enforce British Law. The soldiers camped on the commo...

Nope, it was C, just took the assesment.

I agree, bob is using the PE equation (deltaPE=mgh)

Lol wow, way to be a grammar nazi DrBob, but also, there is an algebraic method to balancing equations I learned in first year chemistry. I don't remember it, but if youre good in algebra, it would be very useful!