# Questions Asked onJune 15, 2009

1. ## Physics

A giant swing at a county fair consists of a vertical central shaft with a number of horizontal arms attahed at its upper end. Each arm supports a seat suspended from a 5.00 m long rod, the upper end of which is fastened to the arm at a point 3.00 m from

2. ## Physics

A bowling ball weighing 71.2 N is attached to the ceiling by a 3.80 m rope. The ball is pulled to one side and released; it then swings back and forth like a pedulum. as the rope swings through its lowest point, the speed of the bowling ball is measured at

3. ## Sarah

A light spring having a force constat of 125 N/m is used to pull a 9.50kg sled on a horizontal frixtionless ice rink. If the sled has an acceleration of 2.00 m/s^2, by how much does the spring stretch if it pulls on the sled (a) horizontally, (b) at 30.0

4. ## economics

aztec enterprises depends heavily on advertising to sell its products. management at aztec is allowed to spend \$2million monthly on advertising, but no more than this amount. each month, aztec spends exactly \$2million on advertising. what is aztec's

5. ## irrational numbers?!

what are rational and irrational numbers?? i know that irrational numbers are numbers that cannot be expressed as a fraction, but i'm still confused. there is this question: which of the following are irrational numbers: √2, √8, 22/7, pi, 2√3 i know

6. ## Science

When 1 gram of liquid water at 0 degrees Celsius freezes to form ice, how many total calories of heat are lost by the water and how do you know? a. 1 b. 0.5 c. 80 d. 540

7. ## Physics

how many kilometers would you have to go above the surface of the earth for your weight to decrease to half of what it was at the surface? I know that the mass of earth is 5.97 x 10^24 kg do i have to convert it to km ??

8. ## college aLGEBRA

1. A toy manufactor needs a piece of plastic in the shape of a right triangle with the longer leg 1 cm more than the shorter leg. How long should the sides of the triangle be? a^2+b^2=c^2 x^2+(x+1)^2=(x+2)^2 x^2+x^2+2x+1= x^2+4x+4 2. Martha want to buy a

9. ## Science

Approximately what percentage of the estimated age of Earth does the Cenozoic Era represent and how do you know? look at pg. 9 in Earth Science Reference Tables? a. 1.4% b. 5.0% c. 11.9% d. 65.0%

10. ## Mathematics

A map drawn to scale of 1:50 000 with the actual distance between two points is 4.5km.Calculate the number of centimetres that should be used to represent this distance on the map.

11. ## math

Xavier worked 10 hours on Monday and 15 hours on Wednesday. His total pay was \$280.00. What is his rate per hour?

12. ## POLYNOMIALS

The cubic polynomial f(x) is such that the coefficient of x^3 is -1. and the roots of the equation f(x) = 0 are 1, 2 and k. Given that f(x)has a remainder of 8 when divided by (x-3), find the value of k. okay, this is what i did: -x^3 + bx^2 + cx + d =

13. ## Physics

what is the instantaneous velocity of a free falling object 10s after it is released from a postion of rest? what is its average velocity during this 10s interval? how far will it fall during this time?

14. ## English

1. Why is the Tom taller than Sam? 2. Look at the Tom who is running on the playground. 3. The Tom whom I like is very wealthy. (Are the sentences grammatical? If not, would you correct them? Thank you.)

15. ## Science Geology (URGENT)

WHICH OF THE FOLLIWING BEST DESCRIBES THE FUNDAMENTAL CONCEPT OF SUPERPOSITION 1. Strata with fossils are generally deposited on strata with no fossils 2. older strata generally are deposited on younger strata without intervening,intermediate age strata 3.

16. ## Chemistry

A two-liter plastic soft drink bottle can withstand a pressure of 5.00 atm. Half a cup (approximately 120mL) of ethyl alcohol, (d=0.789g/mL) is poured into a soft drink bottle at room temperature. The bottle is then heated to 100C (3sig figs), changing the

17. ## drivers ed

can someone please tell me a good website or give me a good link where i can take a practice driving test for a permit (learners licence). pleeease, i really need to practice, and i need a test that is updated. close to the real test. please help me

18. ## history/lit

The 1920's is associated with the development of many new freedoms; it was a time of restrictions as well. Examine the 18th amendment and prohibition in the 1920's. What was the reasoning and who were the key supporters behind a 'dry' United States?

19. ## Math

In a survey of 50 students, 23 owned cellular phones, 18 ownded digital cameras, X owned cellular phones and digital camera, 2X owned neither. a) How do i write an expression in X for the Total number of students in the survey and how do i find for X????

20. ## spanish

La familia Díaz viajará por avión a México . No pueden llevar su pero con ellos.

21. ## The Sociology of Race and Ethnicity

This is when an oppressor uses race to determine who is and is not privileged. These determinations are made by assigning characteristics to races and dividing them into groups. At minimum, characteristics include physical or cultural traits. This is a

22. ## alpha beta identities?

I read on an assessment book that a^3-b^3 = (a-b)[(a-b)^2-ab] Can someone tell me how is a^3-b^3 converted into (a-b)[(a-b)^2-ab]? Same for this: a^3 + b^3 = (a+b)[(a+b)^2-3ab] how do i get this??

23. ## English

1. Don't play too much computer games. 2. Don't play too many computer games. (Which one is right?)

1. The distance s(t) between an object and its starting point is given by the anti derivitive of the velocity function v(t). find the distance between the object and its starting point after 15 sec if v(t)=0.2t^2+2t+10 meters/seconds. MY ANSWER: 600

25. ## English

1. It is about Tom's worries on his height and changes in teenagers' body and mind. 2. It is about Tom's worries about his height and changes in teenagers' body and mind. 3. It is about Tom's worries on his height and changes in teenagers' bodies and

26. ## Arithmetic

Hi, i'm preparing for Olevels and i have some maths questions that i'm not sure how to do, i'd appreciate it if you could help. 1. The numbers 60 and 126, written as products of their prime factors: 60=2^2x3x5 126=2x3^2x7 a)Find the largest integer which

27. ## medical billing and coding

How will employees in the medical office have to be trainrd regarding privacy(for example, who is responsible for training and record keeping)? What is required if an employee doesn't follow the privacy policy? When must employees be trained? In what

28. ## French (URGENT)

You are vacationing in Paris. Describe the Hotel and Restaurant. Can someone please check my work? The atmosphere at L’Atelier de Joël Robuchon is so very different from any other French dining experience. You sit around the kitchen on high stools. Can

29. ## POLYNOMIALS

ok, this might be a bit torturous, but if anyone is patient enough and help me with my working, i'd REALLY APPRECIATE IT!!!! Question: The cubic polynomial f(x) is such that the coefficient of x^3 is 1 and the roots of f(x)=0 are 1, k, and k^2. IT is given

30. ## Mathematics

Two readings are taken from an aircraft's flight record Time - 08:55 Distance travelled - 957 Time - 09:07 Distance travelled -1083 For the period of time between the two readings, how do i calculate a)the distance travelled in kilometres and b)the average

31. ## Physics

A light spring having a force constat of 125 N/m is used to pull a 9.50kg sled on a horizontal frixtionless ice rink. If the sled has an acceleration of 2.00 m/s^2, by how much does the spring stretch if it pulls on the sled (a) horizontally, (b) at 30.0

32. ## Pre Cal

Solve 4sin^2 x + 4sqrt(2) cos x-6 = 0 for all real values of x. My answer: (pi/4)+2(pi)k, (7pi/4) + 2(pi)k Solve 2cos^2 x-5cosx+2=0 for principal values of x. My answer: 60 and 300 degrees

33. ## English

1. I grew 3 cm a year. 2. I grew by 3 cm a year. (Does #1 mean #2? Is 'by' omitted before 3 cm? Then 'grew' is an intransitive verb. If not, 'grew' is a transitive verb.)

34. ## Algebra

What is the absolute value of (-x - 6)?

35. ## physics

A particle moves from rest, its initial position being given by x = c with reference to a fixed point O. Its acceleration at a distance ‘x’ from 0 is mu/x^2 away from O. Show that its velocity is sqrt mu/c when it is a distance ‘x’ from O.

36. ## Physics

The coefficients of static and kinetic friction between a 476 N crate and the ware house floor are 0.615 abd 0.420, repectively. A worker gradually increases his horizontal push against this crate utnil it just begins to move and from them on maintains

37. ## physics

Would someone check my thinking please. A solid sphere (mass, r, and moment of inertia given) is rotating at a given angular speed. Friction is constantly applied at the 'equator' of the sphere, and brings it to rest in 3s. Find the force. I worked out the

38. ## math

use A LG O R I T H M S methood to solve 838+627

39. ## math

Use lattice multiplication to find each product 124 X 56

40. ## Pre Cal.

Find the area between each curve and the x-axis for the given interval. a. y=x^4+5 from x=0 to x=5 650 b. y=3x^2+5x-1 from x=1 to x=4 97.5 c. y=4x-x^3 from x=0 to x=2 4

41. ## accounting

Can somebody help me figure out how to calculate the profit or loss on 12,000 bags and 25,000 bags in this problem? The problem is Healthy Foods, Inc., sells 50-pounds of grapes to the military for \$10 a bag. The fixed costs of this operation are \$80,000,

42. ## Ethics & Socity

So what i need or how would write and paragraph or two on this? I don't understand it myself. Are the accountability systems put in place within our public service agencies working best as an escape route for those elected to govern the agency or as a tool

43. ## math?

Kong’s weight- 1933—Stop-motion pioneer Willis O’Brien, who brought the giant gorilla to life, once guessed Kong’s weight at a rather excessive 38 tons. 2005—8,000 pounds In the 1933 movie, Kong was about 20 feet tall. In the 2005 version, he was

44. ## spanish

this will hopefully be my last quesiton for spanish i want to thanks SraJMcGin very much for helping me throughout my course. Also, thanks to Gurublue. :) Cuando escales montañas, quiero que _____ mucho ciudado. a. tienes b. tengas c. tengo d. tiene i

45. ## Chemistry

A two-liter plastic soft drink bottle can withstand a pressure of 5.00 atm. Half a cup (approximately 120mL) of ethyl alcohol, (d=0.789g/mL) is poured into a soft drink bottle at room temperature. The bottle is then heated to 100C (3sig figs), changing the

46. ## English

1. It is about Tom's worries on his height and changes in teenagers' body and mind. 2. It is about Tom's worries about his height and changes in teenagers' body and mind. 3. It is about Tom's worries on his height and changes in teenagers' bodies and

47. ## Pre Calculus

Simplify 2(3-i^14)- (5-i^23) 3-i Simplify: (5-3i)^2 16+30i Simplify (3+2i) / (4-5i) (2/41)-(23/41)i is this right?

This is the question: The straight line y=2p+1 intersects the curve y= x+ (p^2/x) at two distinct points. Find the range of values of p. this is what i did: 2p +1 = x + p^2/x simplify.... x^2 + (2p+1)x + p^2 = 0 b^2-4ac > 0 (-2p-1)^2 - 4(p^2) > 0

49. ## Essay Writing

It's been a while since I posted a question here :] I'm writing an essay on schizophrenia and this is all I have so far. There is no limit to how long it can be, I just don't know what order I should write the issues in. Some sites giving more information

50. ## weird maths question?

This is the question, but i get the wrong answer. In a theatre, 1/5 of the audience were under the age of 50 and 1/4 of the audience were over 75. What fraction of the whole audience were between 50 and 75 inclusive. I simply used 1 - 1/5 - 1/4 = 11/20 but

51. ## Physics

What gravitational force do yhe two protons in the helium nucleus exert on each other? There separation is approximately 1.0 fm. I know that 1 fm is 10^-15 m i didn't know if that was how you figured it out to get it to N?

52. ## ---

i posted a HUGE spanish question, and it didn't even show up :(

53. ## English

Hello! I am writing observation jornals and have problems with defining of 2 global aims. 1.young learners of EFL have learned yesterday one word in their English class.How can I define the global aim? I need to start with "By the end of the lesson,

54. ## math

Draw a picture of base-ten blocks and use the area interpretation for multiplication to show 34 X 28 complete the calculation by using a paper-and-pencil algorithm

55. ## English

1. It is pain from growing quickly as a teenager. 2. It is pain from growing fast as a teenager. 3. It is pain from growing rapidly as a teenager. (This is a definition of 'growing pains.' Which one is correct?) 4. You have pimples on your face. 5. You get

56. ## spanish

"¿Qué estabas haciendo cuando tuviste el accidente, Daniel?" "_____ el desayuno cuando me corté el dedo." a. estoy preparando b. estaban preparando c. estaba preparando d. estuve preparando

57. ## College Ethics&Socity

Are the accountability systems put in place within our public service agencies working best as an escape route for those elected to govern the agency or as a tool of transparency for the interest of the people who elected them?

58. ## persuasive speaking

i am struggling with the need, plan advantage format for public speaking. i've already consulted my textbook and notes, i still am not understanding the material. is there any websites i can consult to find this format/an explanation? i tried googling it

59. ## Calculus

Use logarithmic differentiation to determine the derivative of the function defined by f(x)=x^5(x-3)^9/(x^2+2)^4

60. ## Algebra

Let g(x) = 10-x/2+x a. Find g(-1) b. state the domain of the function 10-x/2+x c. Find g (t + 1) and simplify as much as possible

61. ## Math

Use the sum or difference identity to find the exact value of tan 105 degree.

62. ## medical billind and coding

Are there requirements for covered entities to have written privacy policies? If so, what has to be addressed in the policy?

63. ## grammar

native americans helped the early european COLONISTS.a)DIRECT OBJECT B)INDIRECT OBJECT C)PREPOSITION D)PREDICATE NOMINATIVE. COLONISTS IS A C. I THINK if not please correct

64. ## grammar

Change the following sentence from Active voice to Passive voice: 1. The teacher shouted at the learners when thy did not do their homework. 2. The thief stole a watch from the shop. 3. The soccer player dribbled the ball.

65. ## Finance

Managing Working Capital. A new computer system allows your firm to more accurately monitor inventory and anticipate future inventory shortfalls. As a result, the firm feels more able to pare down its inventory levels. What effect will the new system have

66. ## POLYNOMIALS

I'm really sorry, i'm preparing for O levels, so i have a lot of maths questions to ask... please excuse me... Question: Find the value of k for which a-3b is a factor of a^4 - 7a^2b^2 + kb^4. Hence, factorise completely. How do i even find k??? Please

67. ## math

The following algorithm gives a correct answer: 488 + 65 5^1 5^1 3

68. ## Finance

1- How can management practices speed the collection of receivables? 2-Which management practices tend to slow the collection of receivables? 3-How have recent changes in the banking industry influenced the collection process?

69. ## Ethics & Socity

Are the accountability systems put in place within our public service agencies working best as an escape route for those elected to govern the agency or as a tool of transparency for the interest of the people who elected them?

I can't play now, can you come back later? Mike said, "I like grape soda". can i used these as sentences

71. ## Science

What is different about the appearence of rocks with mineral alignment and rocks with banding?

72. ## Literature

The best in this kind are but shadows” is

73. ## English

1. 100 dollars a month 2. We rent at/for 100 dollars a month. (House to rent: Does #1 mean #2?)

Using the TVM theory, at what interest rate would it make more sense to take out a loan versus paying with cash?

75. ## how do i do division?

(a^4 - 7a^2b^2 + kb^4) ÷ (a-3b) I'm not sure how to divide this by long division or otherwise...

76. ## Calculus

If f(x)=4-coshx/3+coshx, f'(x)=?

77. ## Calculus

If f(x)=6arcsin(x^3) find f'(x)

78. ## Calculus

f(t)=5^x sechx f'(x)=?

79. ## Math

Verify that tan x csc x/secx=1 is an identity.

80. ## grammar

identify the underline word. mosaics are PICTURES made of bits of colorful glass, stone or tile. a)direct object B)indirect object C)predicate adjective d)predicate nominative i thinks its b

81. ## grammar

jerome is really SERIOUS about sports. a) predicate nominative b)predicate adjective c)indirect object direct object i think its b.

82. ## grammar

every child should have have the OPPORTUNITY to learn to read and write. a)predicate nominative my ans.B)preposition c)indirect object D)direct object

83. ## math

what id the slope of this=3x+-y=2

84. ## Goverment

In a _________ tax strategy, the counsumer pays a higher tax rate as the income increases. What is the missing word(s)?

85. ## Algebra

Let g(x) = 10-x/2+x a. Find g(-1) b. state the domain of the function 10-x/2+x c. Find g (t + 1) and simplify as much as possible