# Questions Asked onMarch 31, 2007

1. ## physics

A pendulum clock can be approximated as a simple pendulum of length 1.20m and keeps accurate time at a location where G=9.83m/s2. In a location where g=9.73m/s2, what must be the new length of the pendulum, such that the clock continues to keep accurate

2. ## Genetics

1. Why are we using more dilute cultures for the killing curve while we are using the arg selection culture at full strength? 2.How would you find the arg+ mutants on the killing curve plates? 3. when designing a protocol to produce auxotrophs for

3. ## chemistry

calculate the empirical formula: 79.8%C and 20.2%H. what os the formula Take a 100 g sample. That will give you 79.8 g C 20.2 g H. convert g to mols. mols = g/molar mass. 79.8/12.01 = 6.64 20.2/1 = 20.2 This gives the formula of C6.64H20.2 However, we know

4. ## Emerald; World History

What are some of the causes of the Crusades Check this site for the causes. http://encarta.msn.com/encyclopedia_761561210/Crusades.html This site will give help with that: http://www.middle-ages.org.uk/cause-of-crusades.htm

5. ## What Is Happening to my Posts?

you have to ask a homework help question, not talk about korean foods, you cant just spam the forum Al, I was talking about botin-tang, a soup from my country; not 'spam.' I don't even eat spam... yuk :( im not talking about the food spam, spam is when you

6. ## Physics - Torque

A particle is acted on by two torques about the origin: T1 has a magnitude of 4.3 N*m and is directed in the positive direction of the x axis, and T2 has a magnitude of 3.2 N*m and is directed in the negative direction of the y axis. What are the magnitude

7. ## CHEMISTRY MOLALITY!!!!!

A bottle of wine contains 13.1% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality. i don't know how to get molality. please help!!!! Molality is the

8. ## Chemistry

Hw many minutes will it take a current of 31.559 Amperes to deposit 1.722 grams of aluminum? I believe it to be 6.505 minutes Is this correct? If not, I'll post my work. Thanks I found 9.757 minutes. Ok, here's my work, I just plugged in numbers to another

9. ## math HARD

What is the general formula for the factorial notation? Hmmmm. Hard? n!= 1*2*3*4*...*n-1*n I have been missing from school and we have just learned it. So I am not very good at it. There is quite a lot on Wikipedia /wiki/Factorial Which includes the

10. ## Physics - Torque

A particle is acted on by two torques about the origin: T1 has a magnitude of 4.3 N*m and is directed in the positive direction of the x axis, and T2 has a magnitude of 3.2 N*m and is directed in the negative direction of the y axis. What are the magnitude

11. ## math help & correction

Problem #1 Is this correct or wrong? Find the slope of the line passing through the points(-1, -1)and(-1, 2). Write the equation of the line. For this one I KEEP GETTING Y= - (3)/(2)x-2.5 Problem #2 Find the y-intecept and slope of 7x+9y=72 My answer:

12. ## science

When was the idea of the atom first introduced? wasnt it around 450 B.C.. Some claim Demotricus introduced it, as the "atomos", but I am not certain on reading his works he understood it as the thing we know as the atom. The best dating we can do is that

13. ## Georgia

I need help find a website on georgia. Thank you very much. You will find sites for maps, history, government and tourism at this: http://www.google.com/search?hl=en&ie=ISO-8859-1&q=Georgia&btnG=Google+Search

14. ## Geomatry

Which Solid can be defined as the regular polyhedron (a solid with all faces identical regular polygons) with the greatest number of faces? Please help thank you http://en.wikipedia.org/wiki/Regular_polyhedra There are nine regular polyhedra. Choose the

15. ## math help

Problem #3 I have to graph y =4 therefore doesn't this run right on 4 going horizontal. Then it asks: List the y-intercepts coordinate and the slope of the graph? Therefore there is no slope and for the y-intercept I do not know what to do or say. Where

16. ## spanish

Which African country has Spanish as an official language? I don't know if it is correct but isnt it Equatorial Guinea. I am not sure That would be correct. You most have a diffrent spanish class. You bet. I eaven a have a weird school. Thank you for using

17. ## math, algebra

the problem reads: Write the equation of the line which passes through the point (2,1) and is parallel to another line with equation y = (5)/(2) x + 6 the answer i get is the following is this correct though y = (5)/(2) x - 4 Since your new line is

18. ## Geography

How natural resources effect the econmy These articles will give you some interesting ideas: http://scholar.google.com/scholar?hl=en&ie=UTF-8&q=Natural+resources+effect+on+economy&spell=1 http://en.wikipedia.org/wiki/Resource_curse

I have to make a buisness. For example If i have open up Video game store just like gamestop. What can i put in my essay. Others may have additional ideas for you, but it sounds to me as if you need to write up a business plan, and then maybe write an

20. ## economics

what happens to the united states economy when the gold standard was discontinued? Since this is not my area of expertise, I searched Google under the key words "gold standard economy discontinue" to get these possible sources:

21. ## Writing English Sentences

Hello again, As part of my weekly assignment, I am required to write a short story in English using the vocabulary words we have learned this week. This week's assignment was very hard, because the words were strange and some of them are even rude. So I

22. ## Grammar

Is this sentence a subject verb agreement? Either the interviewer or the committee members usually begins by asking simple questions about your background. http://grammar.ccc.commnet.edu/grammar/sv_agr.htm Please see #5.

23. ## math,help

What is the equation i have to use for the following question A roof rises 9.75 ft over a horizontal distance of 15.84ft. What is the slope of the roof to the nearest hundredth? Slope is given by slope=rise/run So what is the rise and what is the run?

24. ## Algebra 1

How to factor 10k^2+35k+15 completely? I would start with the easy: factor five out. 5(5k^2 +7x +3) Now the three tells you that the factors are probably 3,1 and the five tells you that the factors are probably 5,1 5(5k+3)(k+1) wrong, wont work and

25. ## chemistry

help me predict the product sodium iodide-> You have only one reactant. Of course we could write sodium iodide ==> sodium iodide.

26. ## english help

crydabu need help unscrambling the word ..hint has to be a word related to spring or easterwith spring or easter Thank you for using the Jiskha Homework Help Forum. If you are allowed 2 words, it could be "buy card." Other than that, list the vowels: a, u,

27. ## Art Question

When children draw cross-sections of plants, they are: 1. intergrating science and art (Or) 2. intergrating mathematics and science Lordy. Surely you have some thinking on this, this question hardly stimulates the cerebral cortex. Did you mean integrating?

28. ## Biology

Can dogs eat cheese? Yes. http://dogs.about.com/od/dietandnutrition/f/pur_mmburger.htm

29. ## soccor

Anybody know good web site to look up soccor. Here are a number of really good soccer sites: http://www.google.com/search?hl=en&ie=ISO-8859-1&q=soccer&btnG=Google+Search

30. ## math

I forgot how to change a decimal to a fraction. i need to change to a fraction the following -2.5 -2 and 5/10 or -25/10 = -5/2 thank you ...and i have to say duhhh to me.

31. ## Math!!

Sally deposited \$3600 and the annual rate of interest is 6.5%. What is the interest amount for a 30-month period? I = prt. I = amt of interest p = principal r = rate (0.065 per year) t = time in years = 2.5 years I = 3600*0.065*2.5 = ??

32. ## sociology

give an example of a human behavior that is considered deviant in one society but is not considered deviant to others. head shrinking Having hallucinations is another example. Some culture consider them communications from the spirits. Our culture

33. ## english

i need help to unscramble this word crydabu..can't figure this one out Try these: http://www.ssynth.co.uk/~gay/anagram.html http://www.unscramble.net =)

34. ## Re: Physics (check)

Posted by COFFEE on Friday, March 30, 2007 at 4:16am. A sanding disk with rotational inertia 1.1 x 10^-3 kg*m^2 is attached to an electric drill whose motor delivers a torque of 6 Nm about the central axis of the disk. What are the following values about

35. ## calculus

The integral of 3x^2 - 4x + 1 equals x^3 - 2x^2 + x. Is this always correct? Where is the constant of interation? wouldn't x^3 - 2x^2 + x + 23 also be correct?

36. ## science

When was the idea of the atom first introduced? http://en.wikipedia.org/wiki/Atom#History_of_atomic_theory_and_discovery_of_atomic_structure Interesting...I never knew that until I read it.

37. ## AP English/Psychology

I will be taking high school AP English and Psychology exam next month. My psychology teacher does not return our tests. Can anyone give me any ideas/leads on how to best prepare for these exams? Thanks! This site may help you.

38. ## Teaching Music Question

By asking students to "freeze" their bodies for a moment when the music pauses, a teacher can help children understand: 1.musical rests 2.harmony 3.melody 4.relaxation Wouldn't the correct answer be musical rests? I am thinking the correct answer could

39. ## Research paper

I have to write a paper about prison life on the norms and values for inmates and staff. and how do inmates meet their needs? Does it mean that inmates meet their needs by gambling and smuggling drugs in the prison? making their own alochol..sexual acts?

40. ## Math

A glass is filled with water and the total weight is 220g. If the glass is halffilled with water, the total weight is 120g. What is the net weight of the glass? There may be a logic way of doing it but the following is the longer "math" way. G = weight of

41. ## Alegebra 1B

7x/16-x/16 When you have the same denominators (numbers on the bottom), you can just subtract the numerators (#s on the top) So 7x-x = 6x So the answer is 6x/16 Matt x-5+(-6)-6=0 x-5+(-6)-6=0 wa zup i think she is right i mean she is right

42. ## Research

I have to write a paper about prison life on the norms and values for inmates and staff. and how do inmates meet their needs? Does it mean that inmates meet their needs by gambling and smuggling drugs in the prison? making their own alochol..sexual acts?

43. ## criminology

can anyone give me some websites with arguments in favor of and against the just desert theory? Thank you for using the Jiskha Homework Help Forum. Here are some things online: 1. http://en.wikipedia.org/wiki/Justice (definition) 2.

44. ## grammar

Her mind flew so quickly,she had so much to remember, that she forgot to stop at the light. Easy, it is spelt "grammar" Thank you for using the Jiskha Homework Help Forum. When you post please clarify as best you can what you want us to do! In addition to

45. ## math,help

I definately do not understand this problem. If y varies directly with x, and y = 600 when x = 1000, find the constant of variation K. If y is directonally (proportional) to x, then for every value of x there is a value for y multiplied by a constant

46. ## Re: Physics

Posted by COFFEE on Friday, March 30, 2007 at 4:25am. A 1.1 kg particle-like object moves in a plane with velocity components Vx = 30 m/s and Vy = 90 m/s as it passes through the point with (x, y) coordinates of (3.0, -4.0) m. (a) What is its angular

47. ## ALGEBRA

There is 117 grams (g) of acid in 900 g of a solution of acid and water. What percent of the solution is acid? 177/900=R/100 R*900=177*100 R=17,000/900 R=19.667 I WOULD ROUND THAT TO 20% SO R =20% AM I CORRECT IF NOT PLEASE EXPLAIN WHAT I DID WRONG Yes,

48. ## chemistry

What is thermal energy? heat energy