Sunday

July 5, 2015

July 5, 2015

Total # Posts: 589

**science**

DDT is stored in body fat and remains toxic for many years. Explain why these characterestics are undersirable in a pesticide. What characteristics would you want in a pesticide to make it less harmful to non-pest organisms?
*September 23, 2009*

**app. math**

Given the following data set, which measure of central tendency is the greatest ? {2,4,6,8,10,12}
*September 21, 2009*

**Physics**

A helicopter is ascending vertically at the rate of 19.6 m/s. When it is at the height of 156.8 m above the ground a stone is dropped. how long does the stone take to reach the ground?
*September 8, 2009*

**9th grade SCIENCE**

what is the three maining of science
*August 25, 2009*

**physics**

"A rod with length L , mass m and resistance R slides without friction down parallel conducting rail of negligible resistance . the rails are connected together at bottom, forming a conducting loop with the rod the plain of the loop makes angle Z wih horizontal , a ...
*July 3, 2009*

**12th grade math**

Below is a set of at least two related math/science "words" with their letters combined and arranged in alphabetical order. When you successfully unscramble the letters into the component words, there will be can additional word that should be in the set. That ...
*April 10, 2009*

**11th grade math**

Below is a set of at least two related math/science "words" with their letters combined and arranged in alphabetical order. When you successfully unscramble the letters into the component words, there will be can additional word that should be in the set. That ...
*April 10, 2009*

**math**

Below is a set of at least two related math/science "words" with their letters combined and arranged in alphabetical order. When you successfully unscramble the letters into the component words, there will be can additional word that should be in the set. That ...
*April 10, 2009*

**Physics**

what
*March 26, 2009*

**Chemistry**

How many moles of HNO3 are required to make 250mL of a 2.4M solution? How many grams of KOH are required to make 125mL of a .50M solution?
*March 4, 2009*

**Chemistry**

What is the molarity of a solution with 3.5mol of CaCl2 in 1.89L of solution What is the molarity of a solution with 16g of CH3OH in 487mL of solution
*March 4, 2009*

**manegerial econimics**

1 JQ sells ties and currently has sales of 1,200 units a month, producing a revenue of £36,000. It competes with KR, who is now considering a price cut of 25%. The PED for JQ is –1.5 and the CED between the two products is 0.8. a) Calculate the effect of KR’s ...
*March 1, 2009*

**managerial economics**

1. JQ sells ties and currently has sales of 1,200 units a month, producing a revenue of £36,000. It competes with KR, who is now considering a price cut of 25%. The PED for JQ is –1.5 and the CED between the two products is 0.8. a) Calculate the effect of KR’s ...
*March 1, 2009*

**social studies**

what details show that athens developed a system of democracy
*February 5, 2009*

**12th grade bio**

The transition of the lips where the outer skinner and inner mucous membrane meet is called the _________ I looked it up and from what I read I believe it is the gingivae. Would that be correct. Thank you
*February 5, 2009*

**college Anatomy & Physiology**

The transition of the lips where the outer skinner and inner mucous membrane meet is called the _________ I looked it up and from what I read I believe it is the gingivae. Would that be correct. Thank you
*February 4, 2009*

**Math**

A new car depreciates an average of 22% in its first year of use. If the car was worth $16,000 when it was new, what will the car be worth after 1 year?
*January 23, 2009*

**collage algebra 1**

what is pi
*January 5, 2009*

**9th grade geography**

waht is the economy i nt the far northern region of russia based on
*December 8, 2008*

**high school**

If F(n) = F(n-1) + (n-1) F(5) = 11 What is F(1)?
*November 15, 2008*

**calculus**

Find the area of the largest rectangle with one corner at the origin, the opposite corner in the first quadrant on the graph of the line f(x)=20-5x , and sides parallel to the axes.
*November 3, 2008*

**Math**

The question is: The freezing point of helium is -272 degrees celsius. The original temperature of a sample of helium is 3 degrees celsius. a.How much must the temperature change to ensure that helium freezes? -AND- b.Assume the temperature changed at a stedy rate for 25 ...
*September 22, 2008*

**science please help me**

in classification system what does BASIS mean????????
*September 21, 2008*

**us history**

thanks so much for your help.
*September 18, 2008*

**us history**

What big idea of American government does The House of Burgesses Fall under? Delf Government, Limited government, representative government or common law.
*September 18, 2008*

**us history**

How did the House of Burgesses Influence the Founding fathers of the United States when they greated our government?
*September 18, 2008*

**6th grade**

What about place value in decimal fractions? What's your question?
*September 16, 2008*

**words**

unscramble cehlmnnouy eefilnpptt eehkossuy ceghlmosty cegghimnuw
*September 11, 2008*

**English**

I have to learn drafting
*September 9, 2008*

**3rd grade**

Asia
*September 8, 2008*

**Trig**

How do you find an equation of a line perpendicular to y=x at the point (5,5) in standard form?
*September 7, 2008*

**Chemistry**

the number of moles in 6.2g of sodium oxide
*September 6, 2008*

**Ethnic Diversity**

Well, here we go!!Same college, same class. I'm having a real problem with this one. I'm so glad I stumbled across all you guys. Good Luck!!!!This has helped me.
*September 2, 2008*

**math**

Given 3x-2y=6, how do i find the area of triangle OPQ? I know I have to graph the equation first but I dont even know how to find the points?
*August 28, 2008*

**hhs 235**

Bahrain is a small country in Arabian Gulf, with 1,234,596 inhabitants. Bahrainins divided into two groups Sunni approximately 50% and Shia 42% and the rest are residents from many countries. The Shia starts the demonstrations in 14 Feb 2011 after the succes of Tunisia ...
*July 6, 2008*

**com 150**

Identify the topic and three subtopics for your expository essay. · Provide three credible sources from the Internet for your expository essay and cite the sources in APA format. · Address the following question: Which subpoint or subpoints on your mind map do ...
*June 29, 2008*

**Chemistry**

What do Na2(CO3)+ Zn(NO3)2 form?
*May 18, 2008*

**science**

movement of earth around sun and movement of moon around earth
*May 17, 2008*

**Chemistry**

Is it...KNO3+C+S--> N+CO2+KS
*May 15, 2008*

**Chemistry**

How do i do that?
*May 15, 2008*

**Chemistry**

20.When black gunpowder explodes, potassium nitrate, carbon, and sulfur react with each other to form nitrogen, carbon dioxide, and potassium sulfide. If thee original mixture contains 50.0 g of potassium nitrate, what is the total volume of the gases produced in the reaction...
*May 15, 2008*

**algebra**

what do you call it when somebody spends 20 years in the 24th row of a theatre
*April 6, 2008*

**math riddle ALGEBRA WITH PIZZAZZ**

omg i just got 3 points extra credit lol!!!
*April 6, 2008*

**Physics**

A lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.220 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.00 kg plate of food and a 0.230 kg cup of coffee. Obtain the force T exerted by the ...
*April 4, 2008*

**Physics**

A person exerts a horizontal force of F = 179 N in the test apparatus shown in the drawing. (h = 0.35 m.) Find the horizontal force M that his flexor muscle exerts on his forearm. The distance between the fexor muscle and the elbow joinf is .051 m
*April 4, 2008*

**LCD**

I need a reveiw on how to use the LCD least common denominator to add and subtract
*March 23, 2008*

**Ethics**

some exampls of ethics
*March 16, 2008*

**Biology**

What is the effect of substrate concentration on enzyme activity? How does enzyme activity change as substrate concentration decreases? Explain your observations by discussing this reaction on a molecular level.
*February 28, 2008*

**vocabulary**

i want vocabulary
*February 7, 2008*

**algebra**

local computer center charges non members $5 per to use the media center. If pay a membership fee of $25. you pay you S3 per session. Write equation that can help you decide whether a solution. a member Then solve the and interpret the
*January 6, 2008*

**Orbital Dynamics**

The zero-velocity value of teh Jacobi integral at the L2 point of the Earth-Moon system is C= -1.59411. Suppose a spacecraft is newar Earth (r2=1/60 in our descriptions). Approximately waht speed must the craft have realtive to the rotating system if it is able to reach the L2...
*December 13, 2007*

**Orbital Dynamics**

The zero-velocity value of teh Jacobi integral at the L2 point of the Earth-Moon system is C= -1.59411. Suppose a spacecraft is newar Earth (r2=1/60 in our descriptions). Approximately waht speed must the craft have realtive to the rotating system if it is able to reach the L2...
*December 13, 2007*

**Math (Grade 12 Data Management)**

a coin is tossed 8 times. caluclate the problitlty of tossing 6 heads and 2 tails 7 heads and 1 tails and at least 6 heads
*November 28, 2007*

**Chemistry - DrBob222**

CaCl2 + NaOH ---> Ca(OH)2 ppt
*November 11, 2007*

**unsramble words**

unscramble d c e d w n i
*November 4, 2007*

**Reading**

My Reading teacher gave it to me to learn steps in a Process
*October 24, 2007*

**Reading**

Hi My theacher is telling me to do an egg drop project with 16 plastic straws with tape it's due tommorow an I need to finish very quickly PlEASE HELP ME!
*October 24, 2007*

**math**

Find a formula for the following functions: x -2 -1 0 1 2 3 4 y 0 3 4 3 0 -5 -12 x -4 -3 -2 -1 0 1 2 3 4 y 25 16 9 4 1 0 1 4 9
*October 8, 2007*

**Calculus!**

What is the velocity of an object dropped from a height of 350 m when it hits the ground?
*September 21, 2007*

**French**

What is a good site for learning how to speek french for free?
*September 20, 2007*

**Science**

What are some similaraties between Vertebrates and Invertabrates
*September 20, 2007*

**Science**

What are 5 differences between Vertebrates and Invertabrates
*September 20, 2007*

**Math**

1999 starts on Friday, so the first week ends on Thursday. 7 days in a week x 52 weeks in a year = 364 days + 1 + 365 so the year 2000 starts on a Saturday. 2000 starts on Saturday, so the first week ends on Friday. 7 x 52 = 364 + 2 (for leap year) = 366 so the year 2001 ...
*September 15, 2007*

**Math**

The year 1999 contains 365 days and begins on Friday. Use deductive reasoning to figure out what day of the week the year 2000 begins on. Show your method. The year 2000 is a leap year; 366 days. What day of the week does 2001 begin on? Show method. How many different ...
*September 15, 2007*

**math**

Please write the expanded and word form of 2.089 as well as the fraction form
*September 10, 2007*

**math**

Write 2.089 in expanded and word form as well as in a fraction
*September 4, 2007*

**Physics**

I have an ice cube :3000 KG,the tempereture is about 50 (cel).would you please let me know how much does it take long for it to change into water ,Hourly Basis ? Regards
*August 27, 2007*

**joiurnal entry**

Earnestine Company issued 10,000 shares of common stocks for $100,000. write the journal entry to record the transaction
*August 26, 2007*

**Chemistry**

Describe how you would obtain pure crystals of Sodium chloride from a muxture of solid sodium chloride and solid zinc carbonate Step1 Step 2 Step 3 1. Add HCl to react with the carbonate. The products are zinc chloride, CO2, and water. The CO2 leaves as a gas and the water is ...
*April 24, 2007*

**maths help**

Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The volume of a cylinder is given by volume = (cross-sectional area) x height so height = ...
*April 23, 2007*

**Maths help**

Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The cross-section of a cylinder is a circle. so pi(r)^2=18 solve for r let the height be h ...
*April 23, 2007*

**The Crucible (ACT TWO)**

at the beginnig of this act, john proctor says, It is winter in here yet." why is this pertinent to what is going on?
*March 24, 2007*

**Anatomy**

Our biology class is studying the human skeletal system this month, and I need to find some information on the fone bone for my report. Can anyone help me out? Thank you for using the Jiskha Homework Help Forum. Is some one joking with you? "Fone Bone" is a comic ...
*March 20, 2007*

**science**

what determine's the direction that Halley's comet points? The tail points away from the sun.
*March 6, 2007*

**math**

3x^2+11x-20=0 (3x -4)(x + 5) = 0 x = 4/3 or -5
*January 21, 2007*

**math check please**

57/54 = c/18
*January 18, 2007*

**Bio (please help me, important)**

In my bio lab we are creating serial disk dilutions (100mg, 300mg, 500mg) from a plant extraction sample. Wood sample #1 (7mL of hexane) Hexane 0.6651g so .6651g of the plant was dissolved in 7mL of hexane. Then I did dilution calculations so 0.6551g/7 mL = 0.095g/ml so I ...
*January 3, 2007*

**science**

I need to find a good site with information about the bacteria Alcaligenes faecalis. I haven't been able to find anything no matter how much I searched, only bits and pieces. Would u know any good sites? http://www.uic.edu/depts/mcmi/faculty/silver/Combined%20Cosmids%20Map...
*December 10, 2006*

**Chem**

For germanium atom write: the set of four quantum numbers for the two highest energy electrons in an atom of Ge. If you go to www.webelements.com and click on Ge, then click on the electron configuration (on the left side of the site but you may need to scroll to find it). ...
*October 29, 2006*

**math**

3)How mnay subsets of 6 integers taken from the numbers 1,2,3...,20 are there such that there are no consecutive integers in any subset (e.g. if 5 is in the subset then 4 and 6 cannot be in it)? This is a fairly challenging problem, what have you tried so far? There are 20 ...
*October 15, 2006*

**language arts**

a metaphor for macaroni salad http://www.tnellen.com/cybereng/lit_terms/terms/2terms.html#Metaphor http://www.tnellen.com/cybereng/lit_terms/metaphor.html http://web.cn.edu/kwheeler/lit_terms_M.html (Scroll down.) Read the definitions and examples. Then write what you think ...
*October 11, 2006*

**English**

If there are two independent clauses in a sentance, but one of the already has a comma, then should there be a semicolon before the conjunction? I just got a paper back from my english teacher and this sentance is one he corected: "Though some people believe that the ...
*October 10, 2006*

**Chemistry**

Photochemical reations (reactions that use light) are unique. In certain cases, reactions that are more dilute are more rapid than those that are more concentrated. Suggest an explanation for this observation. As the concentration of the photolyzed compound increases, ...
*September 23, 2006*

**novel= death on the ice english**

Does Wes Kean believe his men to be safe?
*September 22, 2006*

**bio II**

when very small viruses infect a plant cell by crossing a membrane, the viruses often spread rapidly throughout the entire plant without crossing additional membranes. Explain how this occurs. i think it has something to do with cytoplasmic streaming but i'm not sure........
*September 20, 2006*

**math**

what do we call the numbers that cannot be arranged into 2-row arrays? odd numbers Like I hate equations help me I can't figure them out What's the equation? what do we call the numbers that cannot be arranged into 2-row arrays
*September 14, 2006*

**literature**

i am writing an essay on fitzgerald's "babylon revisited" and i have to give examples of patterns of diction in the story. the teacher explained diction, but i would like a better defenition and examples please! Here are some websites that have good information ...
*September 10, 2006*

**Stoichiometry problem**

NacI and AgNo3
*September 9, 2006*

**A Geometry ?**

Given that two sides of a triangle are 20 and 66. Find the range of possible measures for the third side, s. a. 20<s<66 b. 46<s<86 c. 20<s<86 d.46<s<66 If you could tell me how to do this problem, i could do my next four. In the extreme cases, the ...
*June 18, 2006*