Wednesday

October 7, 2015
Total # Posts: 176

**physics**

A kayaker paddles at 4.0 m/s in a direction 30° south of west. He then turns and paddles at 3.7 m/s in a direction 20° west of south. I know the formulas but having trouble figuring out the degree of angle. Ax=4(cos30)= 3.4641 Ay=4(sin30)= 2 Bx=3.7(cos20)= 3.477 By=3.7...
*October 5, 2015*

**Chemistry**

How does the presence of HCl affect the charges on weak complexes?
*September 24, 2015*

**Calculus**

Let f(x) be the function f(x)={x2−c for x<4, {3x+4c for x≥4. Find the value of c that makes the function continuous.
*September 12, 2015*

**physics**

a 22 kilo ohm resistor having a tolerance of 10% has failed. you have on hand five resistors, valued at 120, 220, 47, 33 and 120 kilo ohm respectively. what combination of these would you choose to connect in parallel to replace the failed component?
*May 12, 2015*

**algebra**

how can you write a proportion that solves a problem in real life? can someone give me some ideas please?
*April 1, 2015*

**algebra **

evaluate the expression when x = 10, y = -2 and z = -5 x/y= _____
*November 13, 2014*

**biology**

How do changes in the nucleotide sequence lead to mutations and how could this affect the primary structure of proteins?
*September 18, 2014*

**Scientific Literacy**

tell us the answer for all the questions.
*September 15, 2014*

**statistics**

construct a 95% confidence interval estimate for the population mean MPG of 2010 family sedans, assuming a normal distribution.
*June 27, 2014*

**math**

Find the maturity value on a loan of 10,500 @ 8 1/2% interest for 18 years using the MV=P+I
*May 6, 2014*

**Chemistry**

If a plant has 88.0 g carbon dioxide and 64.0g water available for photosynthesis determine: a the limiting reactant b. the excess reactant and the mass in excess c. the mass of glucose produced
*April 29, 2014*

**physics**

a great amount of water vapor changes phase to become liquid water droplets in the clouds that form a thunder storm. Does this phase change release or absorb energy?
*April 23, 2014*

**physics**

explain why we sweat when it is hot? How does it help us? In terms of heat and temperature what happens
*April 23, 2014*

**math**

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -2x2 + 2x + 2.
*January 31, 2014*

**math**

solve for d if ddd base 5 = 124
*January 30, 2014*

**Marketing **

Are investment spending market tests a good strategy or a waste of time and overly cautious? I'm working on a case study and I'm having trouble picking a side to argue. The instructor wants us to decide how promotion money should be allocated in the case. The full case...
*November 18, 2013*

**marketing**

I'm working on a case study and I'm having trouble picking a side to argue. The question is, Is the investment spending market test a good strategy or a waste of time and overly cautious? The instructor wants us to decide how promotion money should be allocated in the ...
*November 18, 2013*

**electronics technician**

21. After the third time constant, what is the current in an inductor if the steady state circuit current is 10 amps?
*June 18, 2013*

**algebra**

how do i figure: (-12a^2b^6)^3 over (9a^3b^9)^3
*May 6, 2013*

**business**

Late payment of medical claims can add to the cost of health care. An article (M. Freudenheim, “The Check Is Not in the Mail,” The New York Times, May 25, 2006, pp. C1, C6) reported that for one insurance company, 85.1% of the claims were paid in full when first ...
*January 31, 2013*

**statistics**

a. Compute the mean, median, and mode. b. Compute the variance, standard deviation, range, coefficient of variation, and Z scores. Are there any outliers? Explain. c. Are the data skewed? If so, how? d. Based on the results of (a) through (c), what conclusions can you reach ...
*December 23, 2012*

**business**

1.21 Three professors at Northern Kentucky University compared two different approaches to teaching courses in the school of business (M. W. Ford, D. W. Kent, and S. Devoto, “Learning from the Pros: Influence of Web-Based Expert Commentary on Vicarious Learning about ...
*December 16, 2012*

**business**

1.21 Three professors at Northern Kentucky University compared two different approaches to teaching courses in the school of business (M. W. Ford, D. W. Kent, and S. Devoto, “Learning from the Pros: Influence of Web-Based Expert Commentary on Vicarious Learning about ...
*December 15, 2012*

**business**

1.21 Three professors at Northern Kentucky University compared two different approaches to teaching courses in the school of business (M. W. Ford, D. W. Kent, and S. Devoto, “Learning from the Pros: Influence of Web-Based Expert Commentary on Vicarious Learning about ...
*December 15, 2012*

**simple interest **

if i deposit 3,500 dollars at and intrest rate of 71/2% per year for 5 years what would my interest amount be?
*November 13, 2012*

**Physics**

a.) 25.6m/s
*September 17, 2012*

**macroeconomics**

Referring to the table in question 10, suppose improvement occurs in the technology of producing forklifts but not in the technology of producing automobiles. Draw the new production possibilities curve. Now assume that a technological advance occurs in producing automobiles ...
*September 15, 2012*

**ENGLISH check**

J-Rob is right. Answers are: 1.B 2.D 3.A 4.A 5.B
*September 6, 2012*

**Honors Chemistry**

An aqueous solution of NaCl has a concentration of .500 M. 35.0 mL of this solution is allowed to evaporate to a volume of 20.0 mL. a) Is the solution more concentrated or more dilute afterwards? b) What is the new concentration of the solution?
*May 4, 2012*

**Theory **

If an experiment doesn't agree with the the theory, then this means that the theory is incorrect? please give explain why or why not
*April 25, 2012*

**Socials**

Oops, sorry. This was on the discussion of Louis Riel's conviction of high treason.
*March 25, 2012*

**Socials**

I have no idea how to answer this. Write a paragraph from Macdonald's point of view defending the decision you have made. Keep in mind your desire to look good politically and personally in your quest to get re-elected. What decision did Macdonald make??
*March 25, 2012*

**Math**

7- quarters; quarters and dimes; quarters, dimes, and nickels; quarters, dimes, nickels, and pennies; quarters and nickels; quarters, nickels, and pennies; quarters, dimes, and pennies
*March 20, 2012*

**organic chem**

when di-n butyl ether and hot concentrated naoh react----> nor rxn .. why? when di n butyl ether reacts with na metal---> nor reaction .. why?
*March 11, 2012*

**physics**

Calculate the weight (in English units) of a 2300 kg tiger.
*March 6, 2012*

**gender roles**

what are characteristics and behaviors that are associated with being male and female in or society?
*February 25, 2012*

**horizontal displacement physics**

how do we find horizontal displacement in physics?
*February 22, 2012*

**chemistry - crude product**

WHAT IS THE CRUDE PRODUCT IN RECRYSTALLIZATION?
*February 20, 2012*

**english-personal growth**

what is a personal growth paper?
*February 14, 2012*

**chem (significant figures)**

what are the errors in the measured values g=9.910 m/s^2 amd 9.805? true value 9.797 for 9.910 i got 0.113 and for 9.805 i got 0.008. i know i need for significant figures but i got three in my answer. so what do i do?
*February 7, 2012*

**math(significant figures)**

A pipe is measured once with a steel tape with markings every .1mm.The two ends of the pipe line up with the 0 and 40-m marks onthe tape. How should this datum be recorded using theappropriate number of significant figures? exolain how you figured it out
*February 1, 2012*

**I meant to say math**

math subject
*January 31, 2012*

**chem**

the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 77.0 kg adult receive?
*January 31, 2012*

**ochem**

In a sn2 reaction why do we need sp3 hybrid orbital and not sp2 for the substrate
*January 29, 2012*

**history**

What are three myths about the New World and the Indians (Virgin land, inferior, Noble savage)
*January 22, 2012*

**Math Finance**

joan wants to start an IRA that will have $250,000 in it when she retires in 18 years. How much should she invest nnually in her IRA to do this if the interest is 4% compounded annually round to the nearest cent
*January 2, 2012*

**math**

Lynn is correct. 1/2 of a small salad is less than 1/2 of a large salad
*December 14, 2011*

**mecs101**

discuss a modern middle eastern country's attempt to either codify or replace shariah law.
*November 16, 2011*

**middle east culture **

what are some of the different ways that the shariah can be interpreted and applied to modern society?
*November 16, 2011*

**mecs**

compare the formation of Islamic law to what you know of development of Western legal sytems?
*November 16, 2011*

**mecs 101**

How has Islamic law attempted to adapt to modernity?
*November 15, 2011*

**basic chemistry**

a substance that cannot be broken down into susbtances by ordinary chemical means is
*November 8, 2011*

**chem**

why doesanhydrous hydrogen bromide add to 1-pentene to afford a racemic mixture of. 2-bromopentane, and not 1-bromopentane.
*October 31, 2011*

**Math**

The market trades in three fixed-income securities: A, B, and C. Security A is a 2-year bond paying 40 at date 1 and 80 at date 2. Security B is a 1-year bond paying 50 at date 1. Security C pays 30 at date 1 and 40 at date 2. Prices are pa=100, pb=45 and pc=62. Determine the ...
*October 28, 2011*

**chem**

Does anyone know what graph you would obtain if the fractional distillation had been a complete separation of pure toluene or pure cyclohexane?
*October 6, 2011*

**physics**

what is the average velocity of a vehicle that uniformly accelerates from rest to 38 fps?
*September 27, 2011*

**Math**

A plumber makes $4.50 per hour more than his apprentice. During an 8-hour day, their combined earnings total $372. How much does each make per hour? (hint: if you decide to use cents instead of dollars,then use 450 cents per hour and 37200 cents total earnings)
*September 19, 2011*

**calculus **

A bicyclist is riding on a path modeled by the function f(x) = 0.03x, where x and f(x) are measured in miles. Find the rate of change of elevation when x = 3.
*September 15, 2011*

**Math**

For this problem, I need help creating a chart for this: Brian O'Reily earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as a tutor. How much ...
*September 14, 2011*

**Math**

Brian O'Reily earns twice as much each week as a tutor than he does pumping gas. His total weekly wages are $150 more than that of his younger sister. She earns one quarter as much as Brian does as a tutor. How much does Brian earn as a tutor?
*September 14, 2011*

**Algebra**

The difference of two integers is 9. Five times the smaller is 7 more than three times the larger. Find the numbers.
*September 13, 2011*

**Calculus **

Find the distance traveled in 45 seconds by an object traveling at a velocity of v(t) = 20 + 2cos(t) feet per second.
*September 12, 2011*

**US/ 101**

Have you ever used mnemonics to remember something complicated? If so, describe the techniques you have used. What ways might you use mnemonics to be a more effective college student and adult learner?
*August 14, 2011*

**math**

5322.74
*July 18, 2011*

**math**

Water is flowing at a rate of 10 m3/s into the cylindrical tank shown below. a) Find the volume V of the water as a function of the water level h. b) Find h as a function of the time t during which water has been flowing into the tank. height of cylinder: 80m height of water...
*July 18, 2011*

**math**

how do you solve -4<2x-3<4
*June 14, 2011*

**math**

how do you solve -4<2x-3<4
*June 14, 2011*

**math**

actually i graphed it and theyre -4,0,and 4 but i dont know how to show my work
*June 13, 2011*

**math**

find x intercepts y=x(sqrt16-x^2) all real numbers?
*June 13, 2011*

**math**

why is it not -(x-5)(x+5) wouldnt you have to factor out a negative first so the x^2 isnt negative?
*June 12, 2011*

**math**

factor (25-x^2)
*June 12, 2011*

**Chem**

A) Calculate the pH of a buffer system that is 0.06 M HNO2 and 0.160 M NaNO2 B) What is the pH after 2.00 M NaOH are added to 1.00 L of this buffer I can do part A but I don't know how to part B
*May 14, 2011*

**Chem **

So Cu--> Cu2+ +2e- is losing electrons, right? Because its becoming positive
*May 13, 2011*

**Chem **

For this equation 2 Ag+ (aq) + Cu(s) <--> Cu2+ (aq) + 2 Ag(s) Which occurs at the anode? A. Cu --> Cu2+ + 2e– B. Cu2+ + 2e– --> Cu C. Ag+ + e– -->Ag D. Ag --> Ag+ + e– A, right because it's oxidation?
*May 13, 2011*

**Chemistry**

Suppose you had an unknown solution that contained either dissolved NaCL, or NaNO3. You added AgNO3 to the unknown solution and observed that no solid forms. What can be concluded about the unknown solution? (use the solubility rules
*April 25, 2011*

**Chemistry**

Suppose you had an unknown solution that contained either dissolved NaCL, or NaNO3. You added AgNO3 to the unknown solution and observed that no solid forms. What can be concluded about the unknown solution? (use the solubility rules
*April 25, 2011*

**Chemistry**

Suppose you tired to carry out a double-replacement reaction by mixing together equal volumes if a solution that contained dissolved NaF and a solution NaCl. Would you expect a reaction, if Si write the balanced chemical equation
*April 25, 2011*

**English**

S-V-DO
*March 31, 2011*

**center of mass**

3 point mass of 4g placed at x=1,3,-6. where should a point fourth mass of 4 gm be placed to make the center of the mass at the orgin? this what i got : -24+4+12+4x/16=-8+4x/16. this what i did but i didn't get the right answer(which is 2) can someone tell me what is the ...
*March 27, 2011*

**spanish**

i need to give commands to fix the following sentences: 1.El perro tiene hambre 2.hay mucha basura en la cocina 3.los platos,la alformba y el coche estan sucios,yhay polvo en las mesas.
*March 8, 2011*

**bio (plasma membrane)**

I understand that the plasma membrane is composed of a polar head and non polar tail. I read in my textbook that small non-polar molecules readily pass through and that polar and non-polar repel. so how do non-polar substance pass the the polar head? please explain.
*February 19, 2011*

**Math**

What is the surface area of a right circular cylinder with base circle of radius of 5m and height of the cylinder 10m?
*January 17, 2011*

**math**

the perimeter of isosceles triangle is 70 d. of the length of a leg of the triangle is 5 dm less than twice the lenth of the base, find the lengths of the sides of the triangle.
*January 15, 2011*

**organic chem**

how do i find the general formulas for diyne AL ( al represents aldehyde) diene al eneyneol
*December 14, 2010*

**Physics**

It has been suggested that rotating cylinders about 10 mi long and 5.4 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration?
*December 2, 2010*

**bilogy(genetics**

given the following genotypes GgWwTt and GgWWtt. what is the probability of producing an offspring with the following genotype? How do i solve this problem?
*November 5, 2010*

**social studies (socrates)**

Why were the four charges against Socrates false?
*October 10, 2010*

**chem**

How does a change in volume change the concentration?
*September 30, 2010*

**chemistry**

How are sugars stored in onions and potatoes?
*September 24, 2010*

**chem( buffers)**

Does water have a high buffering capacity? Why is it important to know it buffering capacity of water?
*August 28, 2010*

**childcare**

what is the answer
*August 18, 2010*

**childcare**

a teacher request that a child use a small stepladder to reach a book on a shelf. She is helping the child develop?
*August 18, 2010*

**calculus**

How do I draw the derivative of a function
*July 10, 2010*

**chemistry**

Of the metals Pb, Mg, Au, and Na, which will not spontaneously donate electrons to copper in solution?
*June 14, 2010*

**math PLEASE URGENT**

if normal blood cholestrol level is 5.8 mM and a treatment caused a drop of 1.0 mM with a standard deviation of the difference of 2.0 mM what is the minimum number of individuals that should be used in the drug trial to determine whether or not it is effective i know you have ...
*June 1, 2010*

**relgious education**

For my RE homework I need to write an essay about the differences, similarities between Christianity and Judaism. the teaching and beliefs of the two religions. anyone know of any sites which explain it simply. thanks any help would be great :)
*May 15, 2010*

**chem **

How do I calculate ratio of volume of base to volume of acid . Ex) phenolphthalein: Acid:20mL Base 30mL
*April 27, 2010*

**American History**

what were the elements of urban liberalism?
*April 11, 2010*

**Chemistry**

Write a balanced equation: Aluminum reacts with aqueous hydrochloric acid to form hydrogen gas and aqueous aluminum chloride. I think: Al+HCl(aq)-->H(g)AlCl(aq) But I don't really know if I am doing it right or not
*April 5, 2010*

**English**

Is this sentence already correct? No we have not heard from Mrs. Whittaker since she moved to Iowa City. I think it should be No, we have not heard from Mrs. Whittaker since she moved to Iowa City. I don't think that you need one before the "since". Do you?
*April 4, 2010*