Questions Asked on
March 22, 2009

PhysicsPressure
a house at the bottom of a hill is fed by a full tank of water 5m deep and connected to the house by a pipe that is 110m long at an angle of 58 from the horizontal. a) determine the water gauge pressure at the house b) how high could the water shoot if it
asked by lisa 
chemistry
Can someone please explain the behavior of HCl/NaOH mixture as to why it started bubbling/dissolving when combined with Mg and with NH4Cl and why when blue litmus paper was dipped in the HCl/NaOH mixture it turned red. Also can someone explain the correct
asked by PZT 
physics
As shown below, a bullet of mass m and speed v passes completely through a pendulum bob of mass M. The bullet emerges with a speed of v/2. The pendulum bob is suspended by a stiff rod of length and negligible mass. What is the minimum value of v such that
asked by jim 
precal
A 20foot ladder makes an angle of 62 degrees with the ground as it leans against a wall. How far up the wall does the ladder reach?
asked by amy 
physics
Water falls without splashing at a rate of 0.220 L/s from a height of 2.20 m into a 0.720 kg bucket on a scale. If the bucket is originally empty, what does the scale read 3.20 s after water starts to accumulate in it? The answer is supposed to be in
asked by jessi 
Math
A shoe box is an example of what geometric solid?
asked by Karen 
chemistry
The enzyme Y catalyzes the elementary reaction AB>A + B An enzyme concentration of 1.0M Y can convert a maximum of 0.5M AB to the products A and B per second. What will happen when each of the following is added to a solution that contains 1.0M Y and
asked by tomi 
statistics
The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. What is the area between 415 pounds and the mean of 400 pounds? The area between the mean and 395?
asked by brenduh 
math 116
Solve for g A=gq This makes no sense to me please help! Thanks!!
asked by Sandi 
Chemistry
Decide which of the substances listed can form hydrogen bonds? H20 H2O2 HF NH3 NaF H2 NO CH4
asked by Taylor 
Chem problem percent yield
Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide. Sb2S3 (s) + 3Fe(s) ¨ 2Sb(s) + 3FeS(s) When 15.0 g Sb2S3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this
asked by Stephanie 
chemistry
Can someone please explain the behavior of HCl/NaOH mixture as to why it started bubbling/dissolving when combined with Mg and with NH4Cl and why when blue litmus paper was dipped in the HCl/NaOH mixture it turned red. Also can someone explain the correct
asked by PZT 
physics
A rod of length 39.0 cm has linear density (massperlength) given by the following equation, where x is the distance from one end. ë = 50.0 g/m + 21.0x g/m2 (a) What is its mass? (b) How far from the x = 0 end is its center of mass? I think you would
asked by mightymouse 
History
The "Critical Period" took place during the years when... w. the United States was governed by its 1st president x. George Washington served as the 1st president y. None of these answers are correct
asked by Jennie 
Physics
A 2 cm object is placed 42 cm from a screen. Where should a converging lens of focal length 7 cm be placed between them to form a clear image on the screen? What two possible magnifications could the image have?
asked by Bob 
Chemistry
If you mixed water and dilute sulfuric acid, rather than concentrated sulfuric acid, would the exothermic reaction be greater or less than the exothermic reaction that occurs during hydration of a concentrated sulfuric acid? If so, why?
asked by Michelle 
Chemistry
What is meant by the hyrdration of the hydrogen ion? Does this mean you add water? Does this mean you create hydronium ions? Are hydronium ions only created when you hydrate a concentrated acid?
asked by Michelle 
Fluid Mechanics
A supersonic wind tunnel is to be operated at M=2.2 in the test section. Upstream from the test section, the nozzle throat area is 0.07 m². Air is supplied at stagnation conditions of 500 K and 1.0 MPa (abs). At one flow condition, while the tunnel is
asked by Katie 
Algebra
Amy paid $71.85 for a pair of running shoes during a 20% off sale. What was the regular price?
asked by A.W. 
Geometry
To construct an angle equal to a given angle, you need a pencil and a ....?
asked by michael 
English
1. He was shot in his left arm. 2. He shot the bird on the electricity line. 3. He shot shoulders of North Korea during the Korean War. 4. He is shooting the target on the field. 5. The country produces a variety of wheats. 6. The company produces steels.
asked by John 
physics
In the Figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.3 kg, block B has a mass of 2.7 kg, and angle è is 26 °. If the blocks are released from rest with the connecting cord taut, what
asked by sweety 
computers
Mow do you use a bookmark?
asked by penpal 
AE
I am doing a final paper on Should Teachers Have the Authority to Remove Disruptive Students from Their Classes Permanently? what can be possibly a main point.. can defining distruptive be a main point?
asked by scooby91320002 
Algebra
Solve using the elimination method. 2x +3y = 2, 4x + 6y =4.
asked by A.W. 
physicspressure
how high would the atmosphere extend if it were of uniform density throughout, equal to half the present density at sea level?
asked by lisa 
pressure
ab open tube mercury manometer is used to measure the pressure in an oxygen tank. when the atmospheric pressure is 1040 mbar, what is the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is a)28 cm higher b)4.2cm lower,
asked by lisa 
college
Please help. I need to write a journal entry. I do not know how to even start. Is it the same as essay writing?
asked by anonymous 
Physics
I've been stuck on this problem and hope someone can help me. A man is standing on scales which show his weight as 607.6 N. A .50 kg ball is dropped from a height of 1 m into his hands. His hands drop 25 cm from chest level to waist level during the
asked by Brigid 
Math
I'm struggling with the equations for the following problem: a) The sales representative informs you that there are two floor plans still available, and that there are a total of 56 houses available. Use x to represent floor plan #1 and y to represent
asked by Jen 
Social Studies
What is the name of the group formed by three white supremacists who tried to run Georgia after the Civil War. hints  it's 18 letters long  The second letter is an O
asked by Stephanie 
English
1. He was shot in his left arm. 2. He shot the bird on the electricity line. 3. He shot shoulders of North Korea during the Korean War. 4. He is shooting the target on the field. 5. The country produces a variety of wheats. 6. The company produces steels.
asked by John 
physics
In the Figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.3 kg, block B has a mass of 2.7 kg, and angle è is 26 °. If the blocks are released from rest with the connecting cord taut, what
asked by nirali 
science
how hot can the sun get?
asked by queeneka 
FRENCH
I just read the following in one of my books: "Je suis importateur d'objets d'art de France et du Maroc." I am wondering why it is "du Maroc" but not "de la France". Thank you for your explanation.
asked by E.G. 
Math
When you use this: (0,2);m=4/5 and write it in pointslope form, does it become (y2)=4/5(x0)?
asked by Angie 
philosophy
i am writing a paper on eminent domain and apply the moral theory act ultilitarianism to the case. help having a hardtime starting off.
asked by kbrown 
math 116
x/9=1/16 This is suppose to be solved using the multiplication principle. If possible please show me not just the answer but how you came up with it so I understand how to do these problems. Thank you
asked by Sandra 
Physics
IMAGE: img7.imageshack.us/img7/4994/lenses.png Do I use the image distance from one mirror as the object distance from the next mirror?
asked by John 
Math
When you use this:(4,0);m=1 and write it in pointslope form, does it become y=(x4)?
asked by Angie 
4th grade
do the moon rotates around the sun?
asked by queeneka 
Math
Is it possible to use these points: (4,2),(9,8) and write an equation in slope intercept form, without first writing an equation in pointslope form, and then rewriting it to slopeintercept form?
asked by Angie 
psy
In what stage of development is Michael in and what factors about this stage might be impacting his perspective of this situation?
asked by nicole 
Stoichiometry
6 NaOH + 2 Al > 2 Na3AlO3 + 3 H2 How many moles of NaOH are required to produce 3 g of hydrogen?
asked by Ivan 
Social Studies
How did interchangeable parts transform the manufacturing process in the industrial revolution?
asked by Sara 
English!!
Hi!! Do I need to take the word, "now" out in the sentence below?: Mouschi, Peter Van Daan’s cat, has been missing for several months now. (Or should I just leave the word, "now" there?) Please Help!! Thank You!!
asked by ~{Happy Face}~ 
4th grade
how many quarts are in a gollon?
asked by queeneka 
math
to find the cordinates of the maximum or minimum point of a quadratic relationship?
asked by omar 
Algebra
Solve. 8x(4x+5)=7 8x1(4x+5)=7 8x4x5=7 4x5+5=7+5 4x=12 x=3. Is this right?
asked by A.W. 
Social Studies
This form of violence is used when two races want to hurt each other. hints  it's 9 letters long  It starts with an E
asked by Stephanie 
Algebra.
Solve using the addition and mulitplication method principles. 4+9x1?
asked by A.W. 
English!!
Hi!! Should there be a comma before the word, "as" in the sentence below?: Everyone is waiting quietly as Mr. Frank walks to the door. Thank you for your help!!
asked by ~{Happy Face}~ 
social studies
How and why did the republicans try to undo Hamilton's financial program?
asked by sara 
math
64^2/3
asked by Debbie 
Algebra
collect the like terms. 11u+4v8u9v? Is 19u+5v right?
asked by A.W. 
Russian Literature
I have to write out a thesis and outline about how Russians view American medical technology/advancements/procedures/doctors. I have no idea how to start this and how to prove my topic. Here is the magic thesis statement: By looking at ________, we can see
asked by Jojo 
math
32^2/5
asked by Debbie 
English!!
Hi!! Does this sentence need a comma after the word, "Mouschi"?: Everyone is now relieved that it is only Mouschi, and not the Green Police. (Or does it not need a comma?) Please help!! Thank you!!
asked by ~{Happy Face}~ 
Algebra
How do I solve by the substitution method? 7x +6y=13 x= 355y. I need help figuring this out.
asked by A.W. 
Chemistry
How many moles of sodium chloride must be added to an aqueous solution that contains 2.0 moles of silver nitrate in order to precipitate 0.50 moles of silver chloride? A) 0.25 mol B) 0.50 mol C) 1.0 mol D) 2.0 mol E) 1.5 mol The answer is B. I have no idea
asked by Jill 
English
Why do young people sometimes put themselves at risk? What are three things young people can do to reduce risks and avoid injury? What riskreduction strategies would work well for you?
asked by Growler 
FUND OF BUSINESS LAW
Facts: Frank owns a wellknown restaurant in downtown Milwaukee within easy walking distance from the city's convention center. The Organization of Chemical Research has a contract with the city of Milwaukee for the use of the convention center for its
asked by LARRY 
Fluid Mechanics
A large tank supplies air to a converging nozzle that discharges to atmospheric pressure. Assume the flow is reversible and adiabatic. For what range of tank pressures will the flow at the nozzle exit be sonic? If the tank pressure is 600 kPa (abs) and the
asked by Katie 
Algebra
Is this right? Simplify 7[62(546)] 7[62(5)] 7+113 120
asked by A.W. 
physics
In the Figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.3 kg, block B has a mass of 2.7 kg, and angle è is 26 °. If the blocks are released from rest with the connecting cord taut, what
asked by nicks 
Fluid Mechanics
A convergingdiverging nozzle with a throat area of 2 in² is connected to a large tank in which air is kept at a pressure of 80 psia and a temperature and a temperature of 60°F. If the nozzle is to operate at design conditions (flow is isentropic) and
asked by Katie 
social studies
Sorry to keep posting, I thought I had this one figured out, however it is the last one that I have. She helped to end the Bourbon Triumvirate and pushed for Women Rights Hints  13 letters  ends with an t _ n
asked by Stephanie 
Science
How were the Aleutian Islands's mountain peaks most likely formed?
asked by Angie 
Statistics
A multiple regression model has the form: As x2 increases by 1 unit, holding constant x1, then the value of y will increase by: ^ is over y = 5.25 + 2.5x1 + 4x^2 A) 2.5 units B) 7.75 unit C) 4 units on average D) 11.75 units on average
asked by Stuart 
Statistics
When the purpose of sampling is to detect when a process becomes too variable, the chart of choice will be an R chart. True False I picked True.
asked by Stuart 
MATH
4217.9 ROUND TO TWO DECIMAL PLACES
asked by NENEEE 
Physics
Find the angle of refraction if there is one. If there isn't, tell which substance reflects the light: n=1.36 ~~~~~~~~~~~Angle=15.60 degrees n=1.73 ~~~~~~~~~~~Angle=17.94 degrees n=1.51 ~~~~~~~~~~~Angle=27.71 degrees n=1.0003 ~~~~~~~~~~~Angle=11.08 degrees
asked by Steve 
Statisitics
When the purpose of sampling is to detect when a process becomes too variable, the chart of choice will be an R chart. I picked true on this? True False
asked by Stuart 
Statistics
If a point is more than 3 sigmas away from the centerline, or if two out of three consecutive points are on the same side of the centerline and more than 2 sigmas away from it, the process is deemed to be in control. True False
asked by Stuart 
french
we are learning about the passe compose, and about using irregular verbs like voir and lire, so do we just have to memorize the irregular verb forms? will er verbs always end with an "e" with an accent mark? merci!
asked by amanda 
Statistics
When no point lies outside the control limits of a chart, we conclude that: A) variation in the process is caused by assignable causes and there is enough evidence to infer that the process is in statistical control. B) variation in the process is caused
asked by Stuart 
Statistics
Much of the emphasis in TQM is an understanding and reducing variation within the process through which the product is produced, and samples of output are used in reaching inferences about the stability of the process. I choose True. True False
asked by Stuart 
Algebra
How do I solve 22
asked by A.W. 
Chemistry Lab+Help
Okay, basically what we did in the lab was fill up an empty soda can with about 5mL of water, and we had to heat it up to a boiling point. After that we turned the soda can upside down into a beaker with cold water. After a minute or so, the can just
asked by Chopsticks 
grammar
Hello, I need a grammatical correction in the following excerpt from my essay, "We can see the benefits of having a husband for a woman in the following excerpt..." My teacher circled the phrase "having a husband for a woman" (which means that there is
asked by Tom 
To Cassandra  Com140
Your complex post has been removed because it (1) contains references to materials that we can't access, and (2) give no clue about what you do and don't know about this assignment. Please note that Jiskha Homework Forum has no connection with Axia or any
asked by Ms. Sue 
Science
Are all of these true? 1. Ocean ridges are not associated with orogeny at convergent boundires. 2. At a convergent boundary involving two oceanic plates, you would expect to find a faultblock mountain. 3. Convergent plate boundaries are most often
asked by Angie 
Algebra
Solve. 0.1x < 4. The solution is { x }.
asked by A.W. 
Math
how do you factor 2x^23x+1
asked by Meg 
AP Calculus
I need help with Volume of Revolutions. The question is: Find the volume of the solid generated bt rotating about the designated line the region bounded by: 1. y= x squared + 2, x = negative 1, x = 1 about y = 1.
asked by TJ 
Fluid Mechanics
A small rocket motor, fueled with hydrogen and oxygen, is tested on a thrust stand at a simulated altitude of 10 km. The motor is operated at chamber stagnation conditions of 1500 K and 8.0 MPa (gage). The combustion product is water vapor, which may be
asked by Katie 
PreCalculus
Im having trouble with this. Find an equation of the tangent line to the parabola at the given point and find the xintercept of the line. x^2=2y (4,8)
asked by Shirley 
Statistics
Much of the emphasis in TQM is an understanding and reducing variation within the process through which the product is produced, and samples of output are used in reaching inferences about the stability of the process. I choose True. True False
asked by Stuart 
Math
(.6^2)^1/2
asked by KK 
Algebra
Is this right? 5/4x + 1/8 x =9/8 +x 11/8x= 9/8 +x 3/8 x = 9/8 x= 3
asked by A.W. 
Algebra
Is this right? 9x 7y= 14 7y  9x = 14. It is going to have a point. It is going to be consistent. And it is dependent.
asked by A.W. 
Science
If I use a measuring cylinder to measure 55cm3 of water, what is the degree of accuracy of my measuring cylinder?
asked by marie 
Geometry
A part of a circle bounded by an arc and a chord is..?
asked by michael 
science
Do clown fish encounter problems in its habitat?
asked by Juan 
algebra 2
how do i find the radical notation of 25 1/2?
asked by jeremy 
social studies
What are some presentday examples of trade leading to cultural exchange?
asked by noah 
Role of the Media
can you give me an introductory paragraph and facts?
asked by Penny 
Chemistry
When HCl reacts with Na2CO3, what is created? More specifically, what are the crystals that remain? The questions that I need to answer: 4) What is the shape of the crystals of the product? 5) Have you seen crystals like these before, where? I wasn't able
asked by Ria 
English
I need help writing my introduction... I have to write an argument paper...
asked by Skye 
Business Ethics
Describe the business reasons to limiting monitoring . Also, explain how monitoring causes stress in the workplace.
asked by Tam 
Algebra
Please factor the following expression: x^248x100
asked by Jen 
Science
I'm trying to hypothesize what caused a fishkill. Is it possible that chemicals can raise the temperature of a river?, causing lower oxygen levels? This seems a bit farfetched, but I'm wondering if this could happen. Thank you.
asked by Kendra 
college statistics
The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. What is the area between 415 pounds and the mean of 400 pounds? The area between the mean and 395?
asked by brenduh 
Chemistrysimple explanation needed
How do you explain why ionic compounds are generally soluble in water without using the term "polar solvents"?
asked by carrie 
college algebra
Buying and selling land. Anoa bought two plots of land for a total of $120,000. When she sold the first plot, she made a profit of 15%. When she sold the second, she losT 10%. Her total profit was $5500. How much did she pay for each piece of land.
asked by crystal 
English
I need an activity idea for teaching future perfect continuous? Any ideas please.
asked by Mick c 
English
Ooops sorry make that two ideas for teaching future perfect contiuous. If anybody can help?
asked by Mick c 
physics prelab
By trial and error with your calculator, find the angle theta for which sin theta and theta differ by 5%. This calculation must be done in radians. When you have found theta, express it in degrees. plzzz help thanx
asked by Natash 
Chemistryhelpthanks
Ethanol is an organic solvent. In general, will it dissolve ionic compounds?
asked by carrie 
math
from a base elevation of 8500 ft, a mountain peak in colorado rises to a summit elevation of 14595 ft over a horizontal distance of 15842 ft. find the grade of the peak.
asked by kim 
Algebra
The length of a retangle is fixed at 21 cm. What widths will make the perimeter greater than 76 cm?
asked by A.W. 
FDR+OBama
Do you see any similarities between FDR and Obama as leaders? What about similarities between the economic challenges faced then and now? Compare and contrast the two presidents and their responses to economic issues during their administrations. Well, I
asked by Chopsticks 
math
4/9 +1/3 7/8 + 1/16 9/10 + 1/15 11/127/12 4/5 2/5 3/82/8 7/81/16 5/81/3 5/71/3
asked by sirenia 
physics
In the Figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.3 kg, block B has a mass of 2.7 kg, and angle è is 26 °. If the blocks are released from rest with the connecting cord taut, what
asked by sweety 
Social Studies
I'm doing a project on immigration, which group do you think would be most intersting? Which should I choose? The English The Germans The Italians The Irish The Africans The Japanese The Chinese The Jewish
asked by Angie 
Chemistry
Is sulphuric acid covalent? Please explain. Thanks.
asked by anne 
Torque and shear stress
A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the
asked by Henri 
Chemistry
Which liquid is more viscous at room temperature water or molasses? explain
asked by Lauren 
Language Arts
Riddle: I'm a 10 a 3 yet I'm 1, people fear me yet,they use me everyday. I'm silent yet loud, yet I'm a mute. Sometimes confused,I'm very clear under light. What am I ?
asked by Paijah 
Religion
Is there a certain age you should be when you give thing up for Lent or should you give something up at any age?
asked by Ella 
mat115
Use the world population and land area table. What was the population per square mile of Oceana in 2000?
asked by John 
Algebra
The equation y= 1777x + 27,153 can be used to predict the number of gun deaths in the United States x years after 2000, that is x=0 corresponds to 2000, x=2 corresponds to 2002, x=5 corresponds to 2005, and so on. Predict the gun deaths in 2005 and 2007.
asked by A.W. 
Cultural Diversity
What are two characteristics of Orientalism?
asked by Daphne 
Environmental Studies
I am trying to find the EPA standards for the maximum amounts of phosphate per liter of water. I went on their site, but I couldn't find it. Could anyone find out for me? THank you
asked by Kendra 
Algebra
Solve by elimination method.. 3r  5s = 14 5r + 3s = 46.
asked by A.W. 
Algebra 2
9x^227y2
asked by briana 
Chemistry
Is fertilizer usually basic or acidic? I'm referring to fertilizers that contain nitrates, phosphates, and arsenic. Thanks for investigating this.
asked by Kendra 
social studies
Hi. In my class we are in the Plessy V Ferguson case. I need to write a paragraph on how the decision of this case helped African Americans gain more. I am confused on the decision. In my text book, it reads "The majority rejected the argument that
asked by nirvana 
English
Find the student who looks sad. Find a student who looks sad. (Which one is correct and common?) How does Junsu look? He looks sad. Do you know why? Yes, I do. He got 100 points in English. He got 60 points in math. He got the best points in
asked by John 
Math
How many ways can 6 people line up for a race. This is is a combination, but I do not know how to solve it. Help is appreciated.
asked by Gaby 
business
. Which of the following activities would be a part of a manager’s leadership function? (Points: 1) Devising a new strategic plan to compete in an established market by introducing radically lower prices. Recruiting qualified workers to join the
asked by Bryan 
science
how many times the earth travels around the earth?
asked by queeneka 
Algebra
Train A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 mile per hour and train B is traveling at 88 miles per hour. Train A passes a station at 9:20 P.M. If train B passes the same station at 9:50 P.M., at what
asked by A.W. 
other
when do u get out of school 4 summer
asked by duuke 
math
a ball balances nine 10gram masses and three 5gram masses. what is the mass of the ball?
asked by Ryan 
chemisrty
a 445 g sample of ice at 58 degrees celcious untill its temperature reaches 29 degrees celcius. find the change in heat content system
asked by daniel 
Math/Algebra
Could someone please help me with this problem. I posted it yesterday but the teacher who tried to help me didn't know what I was fully talking about and I hope you can. Directions: Find the area of each shaded region in simplest form. (Imagine a medium
asked by Madeline 
Algebra
In 1992 the life expectency of males in a certain counrty was 73.4 years. In 1999 it was 76.7 years. Let E represent the life expectancy in years t and let t represent the number of years since 1992.
asked by A.W. 
Any
II know this might be lame, but I have to write 67 oage a research paper. How do I decide what topic to write on? Once I have a topic, I can usually run with it, but the decision of the topic sometimes takes up more time than I can to spend.
asked by Mike 
English
What is the dating relationship short term effects and long term effects if you can find them?? please help
asked by Growler 
6th grade math
We are learning probability and can you please check my answer. Question: Enrique has 3 dimes, 2 quarters, and 5 nickels in his pocket. He takes one coin from his pocket at random. What is the probability that the coin is either a dime or a nickel? My
asked by Kathy 
English Lit
I know to some of you this might seem lame, but I have to do a research paper and I am having difficulty deciding on a topic. Once I have a topic, I can usually run with it and have no trouble researching and organizing thoughts. I do, however, have
asked by Mike