Sunday

April 20, 2014

April 20, 2014

Total # Posts: 220

**Science**

5.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.10 M, where it remained constant. Then, the container volume was doubled and equilibrium was re-established. ...

**Geometry**

Find the missing numbers for the dimensions and measures of a rectangular prism... Length ? Width 2.5 m Height 4.6 m Surface Area ? Volume 172.5 m to the third power Please answer the one's with a ?. Thank you.

**Geometry**

Find the missing numbers for the dimensions and measures of a rectangular prism... Length 5 m Width ? Height ? Surface Area 94 m to the second power Volume 60 m to the third power Please answer the one's with a ?. Thank you.

**Physics**

Calculate the tension in the two ropes if the person is motionless. Person weighs 76kg and 15 degree angle rope one and 10 degree angle rope 2

**chem thermo**

consider a system consisting of 2.0mol co2(g) initially at 25c and 10atm and confined to a cylinder of cross section 10.0cm2. it is allowed to expand adiabatically against an external pressure of 1.0atm until the piston has moved outwards through a 20cm. assume that co2 is a p...

**maths**

thank you...it is the d..

**maths**

Suppose we have a chessboard (contains 64 quods). In the first quod we put 0.01 ¤ (1 cents) in the second squod double the previous one and continue this process until the 64th square, how much money we have put on the board? Choose between: a) (263 -1)¤ b) 0.01 ...

**maths**

thank you very much

**maths**

Suppose that in a class there are 8 people, 5 boys and 3 girls. We want to choose a team of 3 people with 2 boys and 1 girl. How many different groups can be formed?

**STATS**

A researcher conducted a survey on a sample of 2000 college-students in order to examine the relationship between academic achievement and procrastination of studying. Using several indicators and plots of the descriptive statistics, found that in the data were many outlier ob...

**Statistics**

Thank you!!

**Statistics**

A researcher wants to study the effect of gender on mathematical ability of lyceum children. From the data gathered tried to construct a scatter diagram. He did not succeed to make it though. Why? a. Had not collected enough data. b. He did not know how to construct it....

**STATISTICS**

Thank you!!

**STATISTICS**

Which of the following correlation coefficients is higher? a. -0.68 b. 0.60 c. 0.68 d. a and c e. None of the above a and c right?

**Statistics**

correlation coefficient is not related to p value. You cannot draw conclusions using the correlation coefficient.. I changed my mind... The answer is True.. If it was o.30 or bigger it would be false..

**Statistics**

The last one is false right? there is a correlation (weak).

**Statistics**

After making an investigation, during which the relationship between intelligence and academic achievement, calculated the correlation coefficient between the two variables, which was found to be 0.29. The researchers concluded that there is no correlation between the two vari...

**Statistics**

The scatter diagram shows: a. The frequency with which each value occurs in the data. b The values of a variable designed in comparison with the values of a second variable. c. The mean data sets. d. The percentage of data belonging to different cat...

**STATISTICS**

Which of the following would increase the width of a confidence interval? Changing from a 99% to 95% confidence level. Increasing the variability of the outcome. Increasing the sample size. Removing an outlier from the data

**STATISTICS**

A study examining the relationship between fetal X-ray exposure and a particular type of childhood blood cancer found the following odds ratio (and 95% confidence interval) for the association: 2.44 (0.95 to 6.33). This result would likely be considered: clinically significant...

**STATISTICS**

You are performing a cohort study to look at risk factors for breast cancer in postmenopausal women. If the probability of developing breast cancer among smokers is .05 for the study duration, then if you sample 100 smokers, how many do you expect to develop the disease? Give ...

**STATISTICS**

You are performing a cohort study to look at risk factors for breast cancer in postmenopausal women. If the probability of developing breast cancer among smokers is .05 for the study duration, then if you sample 100 smokers, how many do you expect to develop the disease? Give ...

**STATISTICS**

A study examining the relationship between fetal X-ray exposure and a particular type of childhood blood cancer found the following odds ratio (and 95% confidence interval) for the association: 2.44 (0.95 to 6.33). This result would likely be considered: A) clinically signific...

**STATISTICS**

Standard error: Is always the standard deviation divided by the square root of n. Is a measure of the variability of a sample statistic. Increases with bigger sample sizes. All of the above.

**STATISTICS**

Which of the following would increase the width of a confidence interval? Changing from a 99% to 95% confidence level. Increasing the variability of the outcome. Increasing the sample size. Removing an outlier from the data

**STATISTICS**

A study was conducted to examine the peer review process. The investigators hypothesized that reviewers suggested by authors would give more favorable reviews than reviewers picked by journal editors. They obtained data on 40 manuscripts that had been reviewed by 1 author-sug...

**STATISTICS**

In a survey of 1000 registered U.S. voters, 55% respond that they support health care reform. What is the 95% confidence interval for the true percentage of U.S. registered voters who support health care reform? 50%-60% 55%-60% 51%-59% 52%-58% 49%-47%

**STATISTICS**

Thank you guys

**STATISTICS**

The following table comes from a hypothetical case-control study that compared adults with moderate-to-severe acne (cases) to adults without acne (controls). The researchers examined the relationship between smoking and acne. The prevalence of moderate-to-severe acne in the po...

**STATISTICS**

Assume that the probability of developing lung cancer in smokers is 15%; the probability of developing lung cancer in non-smokers is 1%; and the prevalence of smokers in the U.S. is 20%. If a person is diagnosed with lung cancer, what is the probability that he/she is a smoker...

**STATISTICS**

is it e or b?

**STATISTICS**

In a cross-sectional study of heart disease and gender in middle-aged men and women, 10% of men in the sample had prevalent heart disease compared with only 5% of women in the sample. After adjusting for age in multivariate logistic regression, the odds ratio for heart disease...

**STATISTICS**

But it is wrong!

**STATISTICS**

Thank you PsyDAG

**STATISTICS**

Researchers conducted a case-control study to identify risk factors for kidney cancer. They asked 50 cases and 50 controls about 100 different exposures and personal characteristics, and calculated the odds ratio for kidney cancer for each risk factor. They found statistically...

**STATISTICS**

In a psychology experiment in which 100 volunteers were asked to read a paragraph about an engineer, 65 assumed that the engineer was male despite the fact that the paragraph did not specify gender (and avoided gendered pronouns such as “he” or “she”). ...

**STATISTICS**

Researchers reported that in a sample of U.S. women aged 50 to 54 who underwent mammography, 14.4% were recalled for further evaluation; however, in a similar sample of women undergoing mammography in the United Kingdom, only 7.6% were recalled for further evaluation. What are...

**STATISTICS**

A particular diagnostic test for disease X has a sensitivity of 90% and a specificity of 90%. What is the negative predictive value of the test? 90% 10% 1% 18% It cannot be determined from the information given

**Math**

Oh, okay. That makes perfect sense. Thank you very much, Ms. Sue!

**Math**

would i change the fraction into an improper fraction to multiply the 57?

**Math**

Grace is building a brick wall along her driveway. She estimates that one row of brinks plus mortar will be 2 3/8 inches high. How many rows will she need to construct a wall that is 57 inches high?

**chemistry**

The combustion of 1.00 g of gasoline releases 11100 cal of heat energy. Determine the number of megajoules (MJ) released when 1.75 gallons of gasoline is burned. (Density of gasoline = 0.740 g/mL)

**Writing**

Is this good so far? In Dr.Martin L King’s Speech, he mostly uses Logos and Pathos. As he mentions that although slavery is over, the Negroes are still not free he uses a sign of emotional feeling on how African Americans were being treated in those days,and by following ...

**Writing**

I Found alot of logos, and pathos in his speech.

**Writing**

I need help with the questions, like some kind of idea I can start off with. Please and Thank you (:

**Writing**

What types of appeals does King use in his speech? Which of the types of appeals that he uses are most effective? Use specific evidence from the speech to support your claims. King was an activist, but he was also a preacher. How does his job as a preacher affect how he writes...

**social studies**

who were the Aryans?

**urgent urgent urgent**

First is a build up of lactic acid from anaerobic muscle use can cause some cramping. It is produced by the rxn: CH3COCOO- + H+ +NADH --> CH3CHOHCOO- + NAD+. This is done to get rid of pyruvate from the cell (lactic acid is easier to transport out of the cell) so that glyco...

**Chem**

A student measures the following data regarding the heat of fusion of ice: 25.8 g ice at 0.0°C is placed into the calorimeter which contains 100.0 g water at 21.7°C. The final temperature comes to 1.5°C. The calorimeter has a heat capacity of 15.6 J/°C. (a) Cal...

**college math**

divide 2x^2-8x19 byx-3

**Math**

Prompt. Use equivalent fractions to order therse fractions from least to greatest: 2/3,1/2, 4/12, 5/6. Explain the steps you took to find your answer.

**Finance**

To finanance a purchase a company will sell 10 year bonds paying 6.6% per year at the market price of $1062. Preferred stock paying a $2.05 dividend can be sold for 25.93. Common stock is cirrently seeling for 54.29 per share and the firm paid a 2.92 dividend last year. Divide...

**math**

12 times x =144 does(12 times x)divided 4 =144 divided by 4

**World Geography**

What were the factors that played a significant role in the collapse of Russian control over Eastern Europe?

**psyc**

Lydia behaves appropriately only because she is aware of rewards and punishments. Which level of moral reasoning do her behaviors reflect?

**com 200**

Kyle has struggled to feel comfortable in science classes with labs since his junior year of high school, when a solution he was working with ignited. He was always cautious with chemicals but his lab partner that year enjoyed seeing what would happen when he mixed random che...

**com 200**

Concrete words have a ________________, a corresponding person or object that you can see, touch, or otherwise experience with your physical senses

**Physic**

The moon orbits the earth a a speed of 1.02 Kilometers per second. Use dimensional analysis to convert this speed into miles per hour. is the answer .28 m/s????

**math**

a rectangle has a length that is four more than three times the width. If the perimeter is 126 feet, find the length and the width

**physics**

An unknown force pushes a 17 kilogram block across a smooth frictionless floor. Three seconds after the force is first applied to the block , the block is moving with a speed of 6 meters per second. What is the magnitude of the the unknown force in Newtons?

**OChem**

A sample of limonene has a specific rotation of +81.5. (Given that R-(+)-limonene = +125.5 and, S-(-)-limonene = -122.1). What is the %ee? ______%ee What is the molecular composition of this same sample? S isomer = ______% R isomer = ______% This is how I solved for the R and ...

**chemistry**

A solution of 114 mL of 0.190 molecules KOH is mixed with a solution of 200 mL of 0.220 molecules NiSO4. a. write a balanced equation for the reaction that occurs. identify all phases in answer

**math**

Find the value of the angle data in degrees rounded to the nearest tenth of a degree.

**algebra**

suppose you invest $15,000 in two funds paying 11 1/2% and 14% simple interest. the total annual interest is $1950. how much is invested in each fund?

**algebra**

Jim was driving to an interview 72 mi away. On the first leg of the trop he drove an average of 30 mph through a long construction zone, but was able to drive 60 mph after passing through this area. If driving time for the trip was 1 1/2 hr, how long was he driving in the cons...

**Economics**

Q = 400 - 20p TC = 10 + 5q + q2 Calculate the following: Profit max price Profit max quantity TR, TC, Profit, and the elasticity at profit max q and p.

**algebra**

Perform the indicated operations and simplify. y-4/y-9 - y+1/y+9 + y-99/y^2-81

**physics**

for 2 metal bars with one twice as large as the other of same alloy, which produces longer wavelength? highest frequency? highest velocity?

**College Chemistry**

metrtroll bessness collage

**math**

The problem describes a debt to be amortized. A man buys a house for $350,000. He makes a $150,000 down payment and amortizes the rest of the debt with semiannual payments over the next 12 years. The interest rate on the debt is 11%, compounded semiannually. (Round your answer...

**algebra**

If license numbers consist of 3 letters followed by 3 digits, how many different licenses could be created having at least one letter or digit repeated?

**area, perimeter**

the perimeter of rectangle y is equal to its area. rectangle z has the same perimeter as rectangle y. the length of rectangle z is 5 inches and the width is 3 inches. explain how you can find the length and eidth of rectangle y.

**Texas Government**

Why should judges be appointed by experts, as explained in the Missouri plan, not by the people in open elections as we do now?

**calculus**

Can someone tell me how to do this type of problem? A particle moves along the curve y=sqrt(1+x^3). As it reaches the point (2,3) the y coorindate is increasing at a rate os 4cm/s. How fast is the x coordinate of the point changing at that instant?

**Texas Government**

Do you think the time has finally come to redraft the 1876 Texas Constitution in order to meet the needs of the growing, 21sy century Texas. Any input would be great.

**mat 157**

Suppose that a natural number from 1 through 9 is selected at random. What is the probabiliy that the number selected is odd if you know that it is prime?

**mat 157**

Suppose that a natural number from 1 through 9 is selected at random. What is the probabiliy that the number selected is odd if you know that it is prime?

**mat 157**

Suppose that a natural number from 1 through 9 is selected at random. What is the probabiliy that the number selected is odd if you know that it is prime?

**mat 157**

Suppose that a natural number from 1 through 9 is selected at random. What is the probabiliy that the number selected is odd if you know that it is prime?

**Mat 157**

How many three-symbol codes (letter-letter-number) can be made from the letters, S,P,Y, and one digit from the set {0,1,2,...,9] without repetition?

**math**

what multiplication facts can be found using the arrays 2*9 and 5*9?

**Chemistry**

0.0020 mole of HCl is dossolved in water to make a 2000ml solution. Calculate the molarity of the HCl solution, the H30, and the pH. The H30 is the same as the molarity of the HCl solution.

**Chemistry **

A sample of 0.0020 mole of HCl is sissolved in water t omake a 2000ml solution. Calculate the molarity of the HCl solution, the (H30+) and the pH. For a strong acide such as HCl the (h30+) is the same as the molarity of the HCl solution. HCl +H20 Balanced equation H30+ +Cl

**Chemisty **

Kaochlor, a 10% (m/v) KCl solution, is an electrolyte solution. How many milliequivalents of K+ are in a 30 ml dose.

**Government**

The Farmers called our government a republic instead of a democracy because they wanted to be clear that they were creating a representative constitutional democracy and not a direct democracy. If the Framers were alive today? 1. What do you think they would say about our move...

**U.S. Government**

The Farmers called our government a republic instead of a democracy because they wanted to be clear that they were creating a representative constitutional democracy and not a direct democracy. If the Framers were alive today? 1. What do you think they would say about our move...

**U.S. Government**

Today we were asked this question in class. We were asked to ponder it over the weekend, but I'd like some views of others. If we don't believe minds are changed in deliberation, then how and why does the law change in these areas over time? Do we not get closer to the...

**modern world studies**

how did china and japans decisions to respond to the west affect its foreign and domestic affairs?

**modern world studies**

I need some help writing an essay. (This homework question was removed due to a copyright claim submitted by K12 Inc.)

**ital**

italian numbers 21-30

**U.S. Government**

Thank you for your help. I just wasn't sure which direction I really wanted to go. I needed some opinions to just need me in a direction.

**U.S. Government**

I'm struggling with answering this question and I would appreciate any help one could offer. I'm needing to answer the following question in paragraph form: Which one of these two philosophies do you think the Supreme Court should follow: judicial activism or judicial ...

**U.S. Government**

I need help answering the following in paragraph form. Which one of these two philosophies do you think the Supreme Court should follow: judicial activism or judicial restraint. I just need help figuring out where to go when answering. Thank you.

**Math Problems**

A worker is paid $9.80 per hour, with time and a half for any hours over 40 per week. If he works 44 hours in a week, what will be his gross pay amount?

**6th grade**

Say you are at a bike shop. They sell tricycles, bicycles and unicycles. If there is a total of 150 wheels and 70 seats. If there are twice as many bicycles as tricycles how many of each type of bike do you have?

**xmgt216**

• Write a 1,050- to 1,400-word paper addressing the following points: o Describe the moral and ethical issues faced by managers dealing with your selected topic. Include how the issue affects other individuals. o Explain how the relationship between social issues and ethi...

**U.S. Government **

Why does the Pluralist theory best describe "who holds power and influences public policy" in the U.S. today?

**chemistry**

zinc plus copper sulfate gives zinc sulfate plus copper

**Computer Science**

Hi can you guys help me with these output code, I think you need to include for loops, but I'm not sure how to use it. Example code would be helpful, thanks. Produce Output For each problem, you are to produce the code, in JAva, to create the following output to the screen...

**computer science**

Hi I have 3 output problems that I need assistance, thank you! Produce Output For each problem, you are to produce the code, in JAva, to create the following output to the screen. 1. + +++0 ++++++00 ++++++++++000 ... (this pattern continues forever) 2. 5 6 7 8 9 10 5 7 9 11 13...