Tuesday

May 31, 2016
Number of results: 13,299

**chemistry**

Determine the molarity of in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of in air is 20.65 Under an pressure of 1.00 , 28.31 of dissolves in 1.00 at 25.
*February 21, 2010 by sab*

**Essentials of statistics**

A populations of scores forms a normal distribution with a mean of 40 and a standard deviation of 12 what is the probability of selecting a sample of n=9 scores with a mean less than m=34
*July 31, 2010 by Anonymous*

**statistics**

If random samples, each with n = 36 scores, are selected from a normal population with m = 80 and s = 18, how much difference, on average, should there be between a sample mean and the population mean?
*October 19, 2010 by Anonymous*

**Chemistry**

The normal boiling point of benzene is 80 degree C and its heat of vaporizations is 30.8 kj/mol. What is its boiling point at the top of Pikes Peak where P=260 mmHg?
*April 27, 2011 by Tyler*

**grammar**

The patient is alert and oriented and has normal mental status exam. Question: List verb/verbs I know there are two - Answer: is Answer: mental
*May 8, 2011 by Leslie*

**statistics**

a. A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean.
*August 15, 2011 by Sally*

**statistics**

In a normal distribution with the mean being 500 and the standard deviation being 100, what raw score separates the top 40% of a distribution from the rest?
*July 29, 2012 by Jessica *

**statistics**

In a normal distribution with the mean being 500 and the standard deviation being 100, what raw score separates the top 40% of a distribution from the rest?
*July 29, 2012 by Jessica *

**stats**

Given a normal distribution with µ = 80, σ= 5, and given a sample size of n = 25, describe the following characteristics of the sampling distribution: 1. Central tendency 2. Variability
*October 23, 2012 by Komal*

**statistics**

if we are testing for the difference between two populations, it is assumed that the two populations are approximately normal and have equal variances, true or false
*April 28, 2014 by marsha*

**statistics**

The final mark in QTQ100T has a normal distribution with an average of 60% and a variance of 100. If we draw a sample of 4 students, the probability that the average mark is more than 56% is
*September 4, 2014 by Anonymous*

**statistic**

in 2000 the average charge of tax preparation was $95. assuming a normal distribution and a standard deviation of $10. What proportion of tax preparation fees were more than $95 ?
*December 26, 2014 by tolendoy*

**Statistics**

In 2000,the average charge of tax preparation was $95.Assuming a normal distibution and standard deviation of $10.What proportion of tax preparation fees were more than $95?
*January 3, 2015 by Leslie Meagan*

**Statistics**

in 2000, the averages change of tax preparation was $95. Assuming a normal distribution and a standard deviation of $10. What proportion of tax preparation fees were more than $95.
*March 15, 2015 by Leo Elvis*

**Physics**

A mass slides down a smooth incline, the normal force is exactly 1/3 the weight of the mass. Find the angle of the incline, relative to the horizontal.
*May 26, 2015 by Tara*

**Math**

If an adult male is told that his height is within two standard deviation of the means of the normal distribution of height of adult males, what can we assume?
*November 22, 2015 by Anonymous*

**Calculus**

An object moves from left to right along a parabolic shaped path y=(1/4)x^2. At the point (-2,1) the speed is 1. What normal acceleration is the object experiencing at that point?
*February 16, 2016 by Tony*

**statistics**

Let A and B be constants such that A < B. Let z be a standard normal random variable. For what values of A does P(A<z<B)approximately equal P(z<B)? Pick ALL that apply. a. A = -9 b. A = -26 c. A = 0 d. A = 9 e. None of these are correct. This is how I'm reasoning ...
*May 10, 2008 by Jane*

**Chemistry**

Given the following data, determine the heat of vaporization and normal boiling point of ammonia Temp (K): 200 210 220 230 235 Pressure (respectively)(torr): 65.3 134.3 255.7 456.0 597.0
*April 25, 2010 by Timothy Boo*

**psychology**

Aresearcher is studying people of normal weight and obese individuals.She wants to know how the time of day affects hunger feelings in these two groups. when, during the experiment, the researcher looks at her watch, she has introduced what into the research study?
*September 12, 2012 by SHERRY*

**Chemistry**

DDT, an insecticide harmful to fish, birds, and humans, is produced by the following reaction: 2 C 6 H 5 Cl (Chlorobenzene) + C 2 H O Cl 3(chloral) ==> C 14 H 9 Cl 5 (DDT) + H 2 O In a government lab, 1142 g of chlorobenzene is reacted with 485g of Chloral. A)What mass of ...
*September 19, 2010 by Jack*

**Math**

Suppose that humans walk about 10,000 steps per day on average. Your average step is probably about 18 inches. If so, how many inches per day do you walk? How Many feet per day do you walk? How many miles per day do you walk, to the nearest whole number?
*January 23, 2009 by Bob*

**Intro to Psychlogy**

One of the best ways to compute heritability is to compare: adopted children compared to adopted siblings. blood relatives who live in the same area. fraternal twins reared in different environments. identical twins reared in different environments. please help i think it is D
*March 14, 2011 by Chloe*

**Physics**

Could a simple machine such as a lever, a pulley system or a hydraulic jack be considered a heat engine? Explain your answer. I feel that its the hydraulic jack because if friction is created, heat is also created. I'm not sure though.
*January 2, 2011 by Bunny*

**Physics**

Could a simple machine such as a lever, a pulley system or a hydraulic jack be considered a heat engine? Explain your answer. I feel that its the hydraulic jack because if friction is created, heat is also created. I'm not sure though.
*January 2, 2011 by Abida*

**accounting**

14. Lear, Inc. has $800,000 in current assets, $350,000 of which are considered permanent current assets. In addition, the firm has $600,000 invested in fixed assets.
*June 28, 2009 by jo*

**Biology (Genetics)**

How would you solve these problems? I am confused about what it is asking and how to start it. A step by step process with explanation would be greatly appreciated. Also, are there any simple ways to work out the problems without getting confused, or is there a way to know ...
*September 15, 2015 by Airin*

**Geography (Ms. Sue)**

1). How did the Reformation affect Northern Europe? A: The Reformation affected Northern Europe as it swept through Northern Europe, causing several different Protestant churches to take root there as well as most of the region to remain Protestant. 2). Why is Eastern Europe ...
*October 4, 2013 by Anonymous*

**Language Arts 8th grade**

Archaic-that which has ceased to be used except for special purposes as in poetry or church ritual some words like thou are archaic list as many words that you can think of that would be considered archaic. i cant think of anymore please help!
*October 27, 2010 by Courtney*

**literary**

I have to write a comparative essay please review it for me thank you. Antigone and Whale Rider In the play Antigone by Sophocles and movie whale rider directed by Caro. The two characters are Paikea and Antigone they both have similarities in common .Both are considered Hero’...
*October 25, 2011 by manal*

**business**

What financial resources would and would not be considered available financial resources? I NEED HELP£¡£¡£¡THANKS£¡£¡
*March 31, 2009 by Joey*

**Fitness Topics**

When you massage an exercised muscle, you help to A. increase the efficiency for the removal of wastes. B. decrease the amount of oxygen moving to the muscle. C. decrease the amount of blood moving to the muscle. D. increase its lifting capacity. im going with B
*March 13, 2014 by Jose*

**hca 240**

•Writing Assignment: prepare for this assignment by reading Chapter 8 Read all three scenarios and identify which blood disorder they are at risk for by including their symptoms, lifestyle, and family history.•Post your 700-1000 word paper by Day 7, Sunday, October 25th.•Use ...
*October 25, 2009 by bobbi*

**com**

please proof read this paper and tell me the changes that i could make to revise it The Dark Knight was the most popular film of 2008. Unlike most popular summer movies it was also considered to be a quality film and was thought to be a contender to earn an academy award ...
*August 30, 2011 by b-more-nappy*

**Agility training**

please check my answer thanks :) Which one of the following acts is considered a fault on a broad jump? A. Moving one of the planks B. Touching the front edge of the first board C. Entering between the marker poles D. Knocking over a corner marker My answer is A
*January 13, 2009 by Mallie*

**HCA**

What can be considered the most problomatic factor that influences patient communication? Fow the most substantial I chose listening skills. I just need a lead, I am having trouble coming up with a problomatic factor.. I will elaborate on it once I find out what exactly it ...
*January 6, 2010 by Jen*

**Changes in Matter**

Which of the following are examples of a chemical change? a)corrosion reactions b)combustion reactions c)dissolving of sugar d)evaporation of water e)decaying reactions f)digestion of food Answer: a, b, c, e, and f Please correct me if I'm wrong, thanks
*March 22, 2010 by Sara*

**chemistry**

sodium reacts completely with 0.142kg of chlorine, forming 234g of sodium chloride. What mass of sodium reacted? I know that for chemical changes the amounts should end up being equal, but I don't know how to set up the problem.
*September 17, 2010 by will*

**Biology**

11. You are searching for a gene that traces its ancestry to an ancient gene in fish. Evolutionarily older fish, like the coelacanth, have only one copy of this gene. More modern fish, like a three-spine stickleback, have three. Modern humans and mammals have no homologous ...
*March 14, 2010 by Lisa*

**history **

•Do you think that the Korean War was merely a civil war in which the United States supported one side, or should it be considered an international war in which the United States used the United Nations to further its anticommunist policies? Why?
*May 29, 2012 by Cheryl*

**PHYSICS**

An object with a mass of 14kg lies on a frictionless incline. A rope attached to the mass runs parallel to the incline and is connected to a wall at the top of the incline. If the rope is considered to be in static equilibrium what is the tension of the rope in newtons?
*October 13, 2012 by MOLLY*

**history**

Do you think that the Korean War was merely a civil war in which the United States supported one side, or should it be considered an international war in which the United States used the United Nations to further its anticommunist policies?
*November 28, 2012 by mark*

**English**

The story “Before Hip-Hop Was Hip-Hop” is narrated by Rebecca Walker and tells of her experience with the rise of Hip-Hop. This is considered the story’s A. Point of View B. Perspective C. Rhetorical Device D. Tone I know it's not D. I think it is B.
*March 31, 2016 by Noemi*

**statistics**

For a normal distribution with a mean of 140 and a standard deviation of 55 find each value requested. a. What is the minimum score needed to be in the bottom 10% of the distribution? b. What scores form the boundaries for the middle 75% of the distribution.
*April 29, 2012 by tammy*

**statistics**

The lifetime of a 2- volt non-rechargeable battery in constant use has a normal distribution of 516 hours and a standard deviation of 20 hours. What is the z- score for batteries with lifetimes of 520 hours?
*September 6, 2012 by Gee*

**statistics**

A vertical line is drawn through a normal distribution at z = 0.50, and separates the distribution into two sections. What proportion of the distribution is in the larger section? a. 0.6915 b. 0.3085 c. 0.1915 d. 0.3830
*October 14, 2012 by Robbie*

**biology**

For each of these restriction enzymes, determine whether or not the enzyme would cut the normal, Mutant A, Mutant B, or Mutant C DNA sequences described in part (g) and select your answers in the table below:
*May 15, 2013 by lily*

**Digestive System**

Pancreatic beta cells release insulin into the blood and INHIBIT the pancreatic alpha cells from secreting glucogon. What does inhibit mean in this context and is the insulin inhibiting or is it the beta cells?
*March 30, 2010 by Lena*

**Physics Again**

How do you calculate the coefficient of friction, if it is not given to you? What would the formula be? It is a measured value. Force friction= mu*normal force. That is the usual method of solving for mu.
*November 30, 2006 by Josiah*

**chemistry**

2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d = 8.93 g/cm^3. The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol.
*February 15, 2010 by Andrew*

**statistics**

Scores on a test have a mean of 66 and Q3 of 81. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth.
*March 29, 2010 by Abby*

**statistics**

The average (arithmetic mean) of a normal distribution of a school's test scores is 65, and standard deviation of the distribution is 6.5. A student scoring a 78 on the exam is in what percentile of the school?
*December 24, 2010 by Anonymous*

**Pre calc**

A set of 500 values has a normal distribution. The mean of the data is 24 and the standard deviation is 2. Find the range about the mean which includes 50% of the data.
*November 4, 2012 by Brandon*

**Physics**

To move a box you pull on the handle as indicated in the diagram shown below with a constant force F. The mass of the box is m = 8 kg and the angle è = 22°. What is the magnitude of the normal force?
*November 6, 2012 by JennaPoop*

**statistics**

A normal distribution has a mean of 36 and standard deviation of 4. What proportion of the distribution consisted of scores between x=34 and x=38? a, 0.6915 b, 2(0.3085)=0.6170 c, 0.1915 d, 2(0.1915)=0.3930
*November 9, 2012 by Robbie*

**physics**

a 65kg oak trunk is placed on a board, inclined at an angle of 30 with the horizontal. What is the weight? The Normal Force of the trunk? The Applied force down the ramp?
*November 18, 2012 by Liam*

**Calculus Help Please!!!**

Find the equation in slope intercept form of the tangent line and the normal line to the curve x^2+4xy+y^2=13 at the point.(2,1). show steps please!!! thank you!
*April 8, 2014 by Tanya *

**Algebra**

Scores on a test have a mean of 66 and Q3 is 80. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth. 10.5 18.7 20.9 9.4
*May 1, 2015 by Leozap*

**science**

A force of 16.0 newtons is sufficient to set a box that is at rest into motion. If the coefficient of static friction is 0.380, what is the normal force acting on the box?
*June 24, 2015 by kevin*

**chem**

What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius?
*December 14, 2015 by hadi*

**cultural diversity ETH125**

o o According to research and news reports within the past 10 years, what are some of the changes the United States has made to policies concerning the treatment of Muslim and Arabic members of society? I DO NOT GET THIS QUESTION AT ALL. IT DOES NOT MAKE SENSE TO ME.
*June 16, 2011 by Kathy*

**english**

hi again why is mentally retarded person not like a normal person is what i meant thanks again
*March 1, 2009 by lila*

**Statistics**

The probability distribution function for a normal distribution is f(x) = 1/(σ*sqrt(2*π))*e^[-(x-μ)^2/(2*σ^2)] How do I derive this?
*August 11, 2009 by Sean*

**calculus**

Find an equation of the normal line to the parabola y = x2 − 7x + 5 that is parallel to the line x − 3y = 3.
*September 14, 2011 by Shayne*

**Physics**

A 25 N book sits on a table. What is the magnitude of the normal force the table exerts on the book?
*June 12, 2012 by Rachel*

**Calculus**

Find an equation of the normal line to the parabola y=x^2−8x+1 that is parallel to the line x−6y =7.
*February 26, 2015 by TayB*

**Gr.11 Biology**

In humans, muscular dystrophy is a condition in which the muscles waste away during early life, resulting in death in the early teens. It is due to recessive sec-linked gene. A certain couple have 5 children- 3 boys, ages one, three and ten; and 2 girls, ages five and seven. ...
*October 3, 2015 by Helen*

**physics**

A hockey puck slides across the ice at a con- stant speed. Which of the following is true? 1. The puck is moving and thus not in equi- librium. 2. The puck can be considered neither at rest nor in equilibrium. 3. It is in equilibrium. 4. None of these 5. The puck is at rest.
*October 17, 2011 by BOB*

**Trigonometry **

A wheelchair ramp has an angle of 6 degrees,side length 29ft and height 3ft. For a safe ramp,the ratio of vertical distance: horizontal distance needs to be less than 1:12. Would the ramp be considered a safe ramp? Please show me how to do this! Thank you
*October 1, 2014 by Cherie*

**art help**

What characteristic should be considered the most when respoinding to a Cubist painting? A. Use of geometric shapes to create an image B. Use of shading and detail in an image C. Use of realistic potrayal of the subject D. Use of appropriate proportions od the subject? Is the ...
*December 8, 2014 by Callie*

**Art **

What characteristic should be considered the most when responding to a cubist painting ? A. Use of geometric shapes to create an image B. Use of shading and detail in an image C. Use of realistic portrayal of the subject D. Use of appropriate proportions of the subject. My ...
*December 17, 2015 by Sierra Elizabeth*

**history**

I am having a though time answering this ?. having to describe how the Cold War ideology that crystallized after WWII changes wartime alliances that had existed during the war?
*March 31, 2008 by Dehlia Silva*

**gov**

thanks, what does party realignment mean? Does it mean when a party changes its principles to accomodate with the public? please dont give me those wiki links, thanks, but they are sort of not reliable. sorry to keep asking!
*October 6, 2008 by Nikii*

** Help with American History**

How did Revolutionary ideology challenge the way minorities were treated in America? What changes in this treatment resulted from this challenge, and why did some minorities find their circumstances improved while others did not?
*August 15, 2009 by kt*

**art**

Does anyone know edvard munch's artist friends, body of work generally described, and changes in style? Also, does anyone know his last style or method of art and general philosophy of life? thanks, your help is greatly appreciated. :)
*October 18, 2009 by becca*

**science**

The Paleozoic Era is noted for which two changes? a) rocks were formed b) the earth heated up c) people appeared on earth d) mountains were formed Just need to know if my answer or right or wrong. Thanks! :) d
*August 19, 2010 by ant*

**Physics**

The atmospheric pressure above a swimming pool changes from 755 to 765mm of mercury.The bottom of the speed is a 12m x 24m rectangle.By how much does the force on the bottom of the pool increase?
*March 3, 2012 by Scibe*

**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 by lou*

**writing/ macolm**

What new life did Malcolm pursue i n Roxbury, Massachusetts? What changes were visible in Malcolm’s clothing? What were the most negative consequences f or Malcolm in choosing that lifestyle? During his incarceration, what did Malcolm do?
*September 28, 2014 by jenny*

**Science**

Salinity of the ocean A)is generally very low B)changes with climate C)decreases with increase in temperature D)increases where a river meets the ocean I think its A but I'm not sure I just want to make sure.
*March 27, 2015 by Sierra*

**Biology**

- "problems that result as blood alcohol concentration increases" Basically, I'm supposed to put what page number the answer is on, and then what the answer is. I have the page number, yet the answer is no where on the page to be found. I've read it over multiple times, so I'...
*May 22, 2012 by Gamzee :o)*

**Poetry**

what is the rhyme scheme for the poem: Come, the wind may never again Blow as now it blows for us; And the stars may never again shine as now they shine; Long before October returns, Seas of blood will have parted us; And you must crush the love in your heart, and I the love ...
*October 24, 2013 by Mercy*

**updated question**

I am given this data table: Time After Consumption (min): 30, 60, 90, 120, 150, 180 Amount of Codeine in Blood (mg): 27.0, 23.5, 21.2, 18.7, 16.6, 14.5 Question: I created a scatter plot of the data. Would y=3.5/30x+30.5 be an equation to model the amount of codeine in the ...
*June 2, 2014 by sandy*

**english**

score/ score presents a fictional world, regulated by computers and other machines in which humans are noticeably absent. Though the main characters are actually two computers that converse, the story contains several details that create verismilitude. Because computers are ...
*September 14, 2011 by jen*

**math**

Students were given an exam with 300 multiple-choice questions. The distribution of the scores was normal and mean was 195 with a standard deviation of 30. What was the score of students who scored in the middle of the class? (50% did better, 50% did worse).
*January 31, 2010 by Patty*

**math**

Students were given an exam with 300 multiple-choice questions. The distribution of the scores was normal and mean was 195 with a standard deviation of 30. What was the score of students who scored in the middle of the class? (50% did better, 50% did worse).
*January 31, 2010 by Patty*

**Statistics**

What is the difference between the null and alternative hypotheses statements in one-tailed and two-tailed tests? How can manufacturing companies use the standard normal distribution to determine quality control of their products?
*August 27, 2010 by Montoney*

**physics**

An airplane moves 243 m/s as it travels around a vertical circular loop which has a radius of 1.2 km. What is the magnitude of the normal force on the 100 kg pilot of this plane at the bottom of this loop? The acceleration of gravity is 9.8 m/s 2 . Answer in units of k
*December 12, 2011 by Ryan*

**statistics**

If the mean value of the weight of a particular brand of dog food is 20.6 lb and the standard deviation is 1.3, assume a normal distribution and calculate the amount of product produced that falls below the lower specification value of 19.7 lb.
*February 9, 2012 by tonja*

**statistics**

The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses more than 350 minutes?
*July 28, 2012 by Anonymous*

**working in a pharmacy**

when a "special" begins to lose its impact you should? a/transfer the products to the shelves at their normal cost b.move the products to another spot c.set up an attractive display using your product knowledge my answer is d
*January 23, 2013 by susue*

**maths **

The lifetime in hours of a certain make of batteries follows a normal distribution with mean 160 and standard deviation 30. Calculate the interval, symmetrical about the mean within which 75% of the battery lifetimes lie.
*February 13, 2013 by harish*

**stats**

A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer will spend $20 or more at this store?
*March 29, 2013 by cate *

**math check**

Consider a normal population with ì = 49 and ó = 6. Calculate the z-score for an x of 44.2 from a sample of size 22. (Give your answer correct to two decimal places.) 3.75 is what I got.. and I have only one more try on this one.
*June 17, 2013 by Sue 74*

**statistics**

A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer will spend between $20 and $35 at this ...
*September 24, 2013 by Selene*

**Stat**

α=0.05 for a two-tailed test. Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Is the correct answer +/- 1.96?
*September 30, 2014 by Anonymous*

**Physics **

A person struggles to read by holding a book at arms length, a distance of 50.0 cm. What power of reading glasses should be prescribed for him, assuming they will be placed 2.0 cm from the eye and he wanted to read at normal near point of 25.0 cm?
*May 25, 2015 by Anonymous*

**social studies**

What individual behaviors might be influenced by television? A) Suicide- I am not as attractive as those on TV. B) Drug use - I am not happy as those on TV. C) Promiscuous Sexual Activity - it seems to be normal behavior on TV. D) All of the above.
*September 20, 2015 by toti*

**Plant Physiology**

Hey i have a mid term today at 3 , and this one sample question my prof posted online. If someone can please show me how to get the answers i would really appreciate it: A plant cell is found to have a Ψs = - 0.7 MPa and a Ψp = 0.5 MPa. Is this cell turgid? (yes or ...
*February 13, 2009 by Saira*

**Social Commentary**

The civil rights movement consisted of many events, such as freedom rides and sit-ins. Some of the events, such as fires and murders, were violent and unsettling. But the killing of the four little girls in Birmingham is considered one of the most significant events. Why do ...
*December 23, 2014 by Sara*