# Questions Asked onOctober 27, 2007

1. ## Physics

The cable of an elevator of mass M = 1020 kg snaps when the elevator is at rest at one of the floors of a skyscraper. At this point the elevator is a distance d = 18.4 m above a cushioning spring whose spring constant is k = 6500 N/m. A safety device

2. ## Physics

The cable of an elevator of mass M = 1020 kg snaps when the elevator is at rest at one of the floors of a skyscraper. At this point the elevator is a distance d = 18.4 m above a cushioning spring whose spring constant is k = 6500 N/m. A safety device

3. ## geometry

finish proof given ABCD is an isoceles trapezoid with AD parallel to BC; DE=DC prove ABED is a parallelogram

4. ## Algebra II

Can a matrix have a two digit number? I have to add the matrices[3 4] +[2 7] [7 6] +[3 8] Sorry this is the only way I know haw to put matrices on the board.

5. ## algebra

At 3PM, two ships started sailing toward each other from ports which were 265 miles apart at average rates of 18 and 23 miles per hour. At what time were the ships still 60 miles apart? *Again, I;m having a real bad day; please walk me through this.*

6. ## Earth Science

Differentiate the composition and texture of a plutonic igneous rock and a volcanic igneous rock.

7. ## Psychology

Rub your index fingers gently over a piece of very coarse sandpaper a few times and rate its coarseness on a scale from 1 (very soft) to 7 (very coarse). After a minute or two, rub the same finger over the paper and again rate its coarseness. Did your

8. ## Science

What is the current in the 30-ohm heating coil of a coffee maker that operates on a 120-volt circuit? Would be 120/30?

9. ## algebra

The base of an isosceles triangle and one of its legs have lengths that have consecutive integers. The leg is longer than the base. The perimeter of the triangle is 20. Find the length of each side of the triangle. *Please help me- I am having a really bad

10. ## Algebra

Dylan has \$2.30 in dimes and nickels. The dimes exceed nickels by 5. Find the# of each kind. let x= nickels= Let x+5= dimes= 2.3=(.05)x+(.10)x+5 2.3= .05x+.10x+5.1 2.3=.15x+5.1 -2.8= .15x -18.666666666repeating=x what did i do wrong?

11. ## Physics

1.A 60.2 kg bungee jumper jumps from a bridge. She is tied to a 13.8 m long bungee cord and falls a total of 34.4 m. Calculate the spring constant k of the bungee cord. 2.Calculate the maximum acceleration experienced by the jumper. Im stuck on the first

12. ## physics

A 1.82 kg box moves back and forth on a horizontal frictionless surface between two different springs, as shown. The box is initially pressed against the stronger spring (k1 = 37.0 N/cm), compressing it 3.10 cm, and then is released from rest. By how much

13. ## Calculus

The cost (in dollars) of producing x units of a certain commodity is c(x)=5000+10x+0.05x^2 Find A=100 to x=105 so far i got y-y/x-x= C(105)-C(100)/105-105 i don't understand how it comes out to be 101.25/5 please help me

14. ## Precalculus/Trigonometry

How can I write a polynomial equation for this problem and draw a labeled diagram? A developer wants to build homes on a rectangular plot of land 4 kilometers long and 3 kilometers wide. In this part of the city, regulations require a greenbelt of uniform

15. ## science

how do pesticides affect fertilisers herbicides in a food web? help!

16. ## Physics

Could someone tell me how to start to solve this? Please How much current flows in a 1000-ohm resistor when 1.5 volts are impressed across it?

17. ## Algerba

Pick a country of your choice that is experiencing population growth. find the most recent population count of the country you have chosen and the population growth rate of that country. Use that growth rate to approximate the population in the year 2008.

18. ## Physics

Would someone please check my answers? thanks During a lie detector test, a voltage of 6 V is impressed across two fingers. When a certain question is asked, the resistance between the fingers drops from 400,000 ohms to 200,000 ohms. What is the current

19. ## Chemistry

what is the emission spectrum of the sun and what does this spectrum reveal about the types of elements in the sun?

20. ## Chemistry - Solutions

Explain how ammonium chloride, NH4Cl, is able to dissolve in water. Dr.Bob where is the explanation?

21. ## history

I searched under the sites you sent me thanks- but i cant find this one - what does constituion say about location of trial.

22. ## history

The decision of a jury shall be final excpet for: is this correct 1. unrx determination of facts in evidence 2. unrx application of est fed law determined by supreme ct

23. ## Calculus Bonus

Form two four-digit numbers from the digits 2, 3, 4, 5, 6, 7, 8, and 9, using each digit exactly once, so that the absolute value of the difference of the two numbers is as small as possible. I don't know where to start, any help would be greatly

24. ## Algebra II

15=6-3/4p+9/ the parenthesis mean absolute value

25. ## Social Studies

What kind of attitude did Mother Jones have? I mean how did she speak?? Like, i know she was excited, and loud,but i cant find anything about the way she talked, or copies of her speeches Thanks

26. ## Physics

A 290- kg crate hangs from the end of a 14.0 m long rope. You pull horizontally with a varying force to move it a distance d = 4.9 m to the right. 1.What is the magnitude of the applied force F when the crate is at rest in its final position? 2.What is the

27. ## to mrs sue

un reasonable

28. ## history

in all cases of criminal proseuction, the accused shall have the right to a speedy trial. What does the consitution say about the location of the trial.

29. ## mrs sue

the text says based on an unreasoanble determination of facts in evidence by jury

30. ## AP World History

How did Roman military orientation and success in war with Carthage contribute to the instability of Roman politics?

31. ## Physics

1.when a train pulls a wagon, is the work zero because wagon pulls on the train with equal opposite force(newton's third law)? 2.what is negative net work and when it is done an on object, does it reduce objects kinetic energy? 3.if the work done on an

32. ## Algebra Absolute Value

|-2/3(x-6)| = 12

33. ## math

In my hand, I have two United States Coins whose totatl value is 55 cents. However, one of the coins is not a nickel.

34. ## FRENCH

Could someone please proofread this? You know, point out or correct the mistakes and tell me what I did wrong? Thanks! Il était une fois, dans une contrée bien loin d’ici, un petit enfant qui s'appelait Markey et qui avait un petit singe très mignon

35. ## Social Studies

Hey, I'm trying to find a leader that shows the following characteristics;generosity, respect, passion in fighting against racism, strong will and being able to voice their opinions.

36. ## English expression

1. He did his presentation in the period. 2. He did two presentations this week in front of other co-workers. 3. I had to pay some amount of service money for using the ATM. 4. In a bank we can join a fund product. ===================================== Are

37. ## English Composition

1. You should save the video files at the computer. 2. We can videotape up to around 9 hours with the highest quality with the camcorder. 3. We are going to stay at a home for homestaying. 4. We'll leave Korea on Wednesday, January 23rd, 2007.

HI I'm in year 10 and I would like to have some websites on business Studies to revise for a test on Monday Especailly on the topic of Sectors of Economy thnnx

39. ## math help

1. Michelle reads 1,200 words in 7 minutes, and Tricia reads 700 words in 3 minutes. Who is the faster reader? 2.Find the unit price for the item: \$6.96 for a dozen pears.

40. ## Need Preperation Help

I have a test on Hamlet soon and I'm just wondering if anyone know sites that have test-like questions? (not multiple choices from those study guide sites, I'd like short answer questions and essay questions)

41. ## Physics

Can anyone help? the resistance of the side lights on an automobile are 10 ohms. How much current flows in them when connected to 12 volts

42. ## Physics

Is the answer to this 4? If the filament resistance in an automobile headlamp is 3 ohms, how many amps does it draw when connected to a 12-volt battery?

43. ## Physics/Excell

I have to do a chart with the following information but I cant get the chart to come out right does anyone know how. Im using a scattered xy chart. Information: Trail x units y units k=y/x 1. .041 A 4.0 V 2. .083 A 8.2 V 3. .127 A 12.3 V 4. .162 A 16.0 V

44. ## Physics repost please clarify

A converging lens has a focal length of 0.060 m. An object is located 0.020 m to the left of this lens. A second converging lens has the same focal length as the first one and is located 0.100 m to the right of it. Relative to the second lens, where is the

45. ## science

I'm doing a project on persistent pollutants and brominated flame retardants in particular. Can you suggest some good sites to look at for the effect on the ecosystem? I need to identify the source of, the effects on our environment, effects on a

46. ## algebra

At 9AM, two cars started from the same town and traveled north on the same road. One car averaged 45 miles per hour, and the other car averaged 40 miles per hour. In how many hours were the cars 30 miles apart?

47. ## econ, help???

Economyst, My prof says only a was right at 100 billion, but b, c, and d were wrong?? I appreciate the help anyway cause she was on vacation. I have posted the answers she got.... 2. The goverment raises taxes by \$100 billion. If the marginal propensity to

48. ## science

Any advice on how to figure out solubillty of Agno3?

49. ## English

Identify the subject, verb , direct object, indirect object , object complement, in the sentence. People call Philadelphia " the city of brotherly love'.

50. ## cultural diversity-reposted question

Which scenario best describes a nuclear family? A) Jeremiah is growing up within a cluster of adults and children who maintain their own living quarters but come together for work and meals. Child-rearing is a shared responsibility B) The Farrish family is

51. ## cultural diversity-reposted question

Iasked this question a couple of days ago- and got several different opinions. Ms. Sue tried to point out to me why she thought the correct answer is (B); however,I think some read my text wrong. Would someone please,reread the question and reread what my

52. ## science

does a metal mass change when it's heated

53. ## drying agent in chem

Is it advisable or not to leave a solution in drying agent for a few days? ~I did this ..since my chem lab instructor said to but I'm not sure I believe him. He sounded unsure of himself when he answered me. solution: methylene chloride (extracting oil of

54. ## Math

Cameron spent \$13.50 at a pet store buying fish for his aquarium. He bought a bag of 14 fish that contained a combination of guppies and goldfish. Goldfish cost \$1.65 a piece and guppies cost \$0.45 a piece. How many of each type of fish did Cameron buy?

55. ## essay question

i'm doing an argumentative essay about how hazing for fraternities is dangerous. do sororities have hazing too or is it only fraternities/

56. ## ECON, HELP?!?

Economyst, My prof says only a was right at 100 billion, but b, c, and d were wrong?? I appreciate the help anyway cause she was on vacation. I have posted the answers she got.... 2. The goverment raises taxes by \$100 billion. If the marginal propensity to

|10-2x|=18

58. ## history

I have been searching for over an hour - please help what is the difference between capital crime and an infamous crime

59. ## history

Is this correct: job of grand jury - to provide an unbiased decision if there is enough eveidence to hold the person over for trial.

60. ## history

how many persons are on a grand jury?

61. ## Physics

A 290- kg crate hangs from the end of a 14.0 m long rope. You pull horizontally with a varying force to move it a distance d = 4.9 m to the right. 1.What is the magnitude of the applied force F when the crate is at rest in its final position? 2.What is the

62. ## Physics

A crate (weight 381 N) is lowered vertically a distance of 3.0 m by two ropes at a constant speed of 1.2 m/s. The tension in rope A is TA = 248 N; the rope makes an angle of ƒÆA = 63‹ with the horizontal. Rope B makes an angle of ƒÆB = 55‹ with

63. ## history

what is the difference between a true bill nad no bill

64. ## Algebra2

The cable company has two plans: Plan 1- Flat fee of \$45 a month Plan 2- \$15 a month plus 45 cents per minute What two equations would you use to graph the two plans? After how many minutes does it not make a difference which plan you use?