# Questions Asked onJuly 15, 2010

1. ## Chemistry

This question is very confusing, I do not understand what it wants me to do. Each reaction below has been identified by type. Use this information to help predict products. Copy and then complete each equation by writing the products of the reactions.

2. ## college physics

An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.3×10^7 m/s. What was the electron's speed as it left the negative plate? the voltage is 650V and the charge of q1 is 1.7*10^-9 and the charge of q2 is

3. ## college

15.Pedro Martinez wants to invest \$25,000 in a spa that his sister is starting. He will triple his investment in six years. What is the rate of return that Pedro is being promised

4. ## physics

1. Measurements show that there is an electric field surrounding the Earth. Its magnitude is about 100 N/C at the Earth's surface and points inward toward the Earth's center. From this information, can you state whether the Earth is negative or positive?

5. ## college

the perimeter of the rectangle is 294cm, the width is 57 cm, find the length

6. ## Maths

The first term of a g.p is 2 calculate the 4th given that common ratio ir 2

7. ## algebra II

Leona was in a golf tournament last week. All of her four rounds of golf were within 2 strokes of par. If par was 72, wat are the maximum and minimum scores that Leona could have made in the golf tournament?

8. ## DrBob222

These are the other equations I've balanced. I need help with one. AgNO3 + K2Cr2O7 --> double replacement AgNO3 + K2Cr2O7 --> AgCr2O7 + K2NO3 Please tell me if I've balanced these right. Br2 + NiI3 --> single replacement, element is a non-metal Br2 + NiI3

9. ## Health Care Ins

How participation contracts represent financial opportunities for providers. What are positive and negative ramifications of discounted fee-for-service arrangements

10. ## algebra

w^2-3w-40=0 how are you supposed to solve this and how do you find the solution for w

11. ## Phyiscs

Please show work You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 270 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the

12. ## p

A certain string can withstand a maximum tension of 41 N without breaking. A child ties a 0.35 kg stone to one end and, holding the other end, whirls the stone in a vertical circle of radius 0.91 m, slowly increasing the speed until the string breaks. (a)

13. ## Trigonometric Functions

Given that 0 < or = x < 2pi, solve each of the following equations in radians. sin2x=square root of 3 over 2

The lengths of 2 legs of a right triangle are 16 cm and 30 cm. What is the length of the hypotenuse?

15. ## chemistry

how do you solve this problem? consider the reaction A->B the rate of the reaction is 1.6 x 10^-2 M/s when the concentration of A is 0.35 M. Calculate the rate constant if the reaction is a) first order in A and b) second order in A.

16. ## Chemistry

A solution is made by mixing NaOH and HNO3. Write a balanced equation for the reaction that occurs between the solutes. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

17. ## Statistics

Assume the body temperatures of healthy adults are normally distributed with a mean of 98.20 °F and a standard deviation of 0.62 °F (based on data from the University of Maryland researchers). Bellevue Hospital in New York City uses 100.6 °F as the

18. ## chemistry

the chapter is about chemical kinetics Reaction mechanisms: What does it mean by mechanism of a reaction? What is an elementary step? what is the molecularity of a reaction?

19. ## chemistry

How do you solve this problem? In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a shpere) is 10.0cm^3. Calculate the surface area of the catalyst. IF the sphere is broken down into eight

20. ## physics

In the figure below, a stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R = 240 m. What is the greatest speed at which he can drive without the car leaving the road

21. ## Chemistry

Using the activity series, explain the reason that most metals cannot exist in nature as elements but are found as compounds instead. Use specific examples to explain your answer. (Hint: Consider the reactivity of metals with water)

22. ## multiple intelligences

have you ever used mnemonics to remember something complicated? if so, describe the techniques you have used. what ways might you use mnemonics to be more effective college student and adult learner.

23. ## Physicss

Please show work You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 270 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the

24. ## Science: Astronomy

How would a star regain it's state of equilibrium if the energy generation rate of a star were to become slightly smaller than it's equilibrium?

25. ## Science: Astronomy

Why do extremely cold stars look fainter than we might expect from their luminosities and distances?

26. ## Science: Astronomy

Why can't we use solar type stars as spiral tracers? What type of stars make good spiral tracers? Why? What characteristics do they have to perform this function?

27. ## Science: Astronomy

How many times longer does a 0.50 -M star fuse hydrogen at it's core than does a 1.5 -M star?

28. ## Math

1. Identify the degree, leading term and leading coefficient of each polynomial function. A. f(x)= x(x+1)(3x+1)(x-2) B. f(x)= -16+3x^4 - 9x^2 - x^6 + 4x^8 2. Describe the end behavior of a ninth-degree polynomial function with a negative leading

29. ## Science: Astronomy

How many 0.75 -M main sequence stars would it take to equal the luminosity of one 15 -M star?

30. ## Chemistry

If the light travel 3.0 times 10 to the power of 8 meters/secs. How long it will take in miles/hr

31. ## accounting

I am showing a \$8100 debit balance on prepaid insurance at the end of august. The pre-paid insurance was purchased in Feb. for 12 months. what should my adjusting entry to pre-paid insurance be for the month of Sept. which is the end of my fiscal year?

32. ## math

What is a function, in your own words?

33. ## Math (Algebra)

Is (xy)^3 the same as xy^3? Explain why or why not.

34. ## math..probabilities

A weighted coin has the property that the Heads comes up 60 percent of the time. On two flips of the coin, is it more likely that the outcomes from the two flips are the same, or the outcomes from the two flips are different? The same outcome is more

35. ## Website

is pathwelp a free website?

36. ## psychology

I hope you can help me. I am working on my final and need to know what exactly is "Evaluate the list above (not giving the list but doing on stress)for areas of need not already addressed. Recommend a fifth job title and assign other health

37. ## Math

A weighted coin has the property that the Heads comes up 60 percent of the time. On two flips of the coin, is it more likely that the outcomes from the two flips are the same, or the outcomes from the two flips are different?

38. ## Algebra

Area of a triangle. Find the exact area of a triangle with a base of sqrt 30 meters and a height of sqrt of 6 meters. Thank-you

rocket launched from a 90 meter high building, upward speed of 20 meters per second. what will it's height be after 3 seconds. given the polynomial h + vt -4.9t^2 90 +(20) (3) - 4.9 (3)^2 Is the answer 130.4 ?

40. ## algebra

Time to swing. The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum by the formula 8T^2=n ^2 L. If a child is on a swing with a 10 foot chain, then how long does it take to complete

41. ## Math

Hi,I need to know how to do question like this without using a calculator. Can anyone help please. Which of the following is closest to square root of 4000 A)40 B) 60 C) 200 D) 2000 I know the answer is B , but I did it on the calculator. Can someone show

42. ## other

why do u say d??

43. ## Chem

How many moles of water can be obtained from 19.7 g of CoCl2·6H2O?

2) Britain has issued the following regulation. “Whereas E. Coli and various other bacteria have caused an outbreak of disease worldwide and whereas beef products are prone to illness causing bacteria and whereas children often consume beef products it

45. ## math

solve for X ? 1) 8-3x < 14 -3x/-3 < 6/-3 x=-2 2) 7x -3 > 4x +3 3x -3> 3 3x/3 >6/3 x>2 3) x-5 -8 x-4 4) x+ 7 30 x 6 are they correct..

46. ## DrBob222

DrBob222 I am kind of stuck with the balancing stuff, and I already had send the post, did you not read it?

47. ## physical

Below i copied the assignment but, I only need help finding a peer reviewed article about the effects of optimism on physical help. Can someone PLEASE help me fast? Here is the assignment.... Find a peer reviewed article which discusses the effects of

48. ## math116 appendix e

4. The line represents an estimate of the average cost of gasoline each year. The line estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or perpendicular?

49. ## chemistry

Determine the overall orders of the reactions to which the following rate laws apply: a) rate= k[NO2]^2 b) rate = k c) k [H2][Br2]^1/2 d) k [NO]^2[O2] is it.. a. 2 b. 0 c. 1 1/2 d. 3

50. ## math 116 appendix e

4. The line y=0.15x +0.79 represents an estimate of the average cost of gasoline each year. The line 0.11x-y=0.85 estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting,

51. ## Finance

14.You need to have \$15,000 in five years to pay off a home equity loan. You can invest in an account that pays 5.75 percent compounded quarterly. How much will you have to invest today to attain your target in five years?

52. ## Pythagorean Theorem

A ladder resting against the side of a building reaches 32 ft up the building. If the ladder is 40 ft long, how far from the building is the base of the ladder?

53. ## Chemistry

Hello, What is the hybridization of an H atom on a methane? As far as I understand, the hydrogen has 1 s orbital which bonds only to carbon, so does not have any hybridization. Is this correct? Thank you

54. ## English

How can i use the word cloy? i wrote this sentence but i'm not sure if i used the word correctly... "At first I thought you were appealing but now that i realize that your just a cloy." I need help!! :D thanks in advance.

55. ## billing

what are the implications of simultaneous federal and state involvement in the insurance process

56. ## Grammar

How can i use the word cloy? i wrote this sentence but i'm not sure if i used the word correctly... "At first I thought you were appealing but now i realize that your just a cloy." I need help!! :D thanks in advance.

57. ## poetry

WHERE DO THE SLASHES GO IN THE SYLLABLES OF ROBERT FROST'S POEM/THE ROAD NOT TAKEN

58. ## chemistry

how would you calculate the weight of percipitate of AgBr that will dissolve in 400 ml of water?

60. ## english

What does it mean when the teacher says "There is no need to rekey the question(s)? Thanks in advance.

61. ## geometry

If Úc ≅ Úd, mÚc = 5x - 7, and mÚd = 3x + 25, how many degrees are in Úc?

62. ## composition

Why do you need to use appropriate punctuation, including plurals and possessives, in your writing?

63. ## algebra

how do you find the x-intercepts y=x^2+2x-3

64. ## algebra

can someone please tell me if this is right or this simple really? the question is to express using a positive exponent. m^-6 so do you really just change it to m^6 so that it is positive? Or how do you go about that?

65. ## history

address the following points: The societal changes in Europe that led to the exploration of other lands The advances in Europe that made exploration possible

Using a dictionary look up and then list four definitions of the word nice that you would use in a paragraph to develop this topic sentence: "The word nice is surprisingly ambiguous."

67. ## science, ipc

Which best describes longitudinal waves? ________________________________________ A. Compressions and rarefactions make up longitudinal waves, which can only travel in matter. B. Longitudinal waves carry sound energy and are made up of crests and troughs.

68. ## physics

A bicyclist travels in a circle of radius 31.0 m at a constant speed of 5.00 m/s. The bicycle-rider mass is 88.0 kg. (a) Calculate the magnitude of the force of friction on the bicycle from the road. N (b) Calculate the magnitude of the net force on the

69. ## math

For the following values of x and y, calculate slope and intercept. y x 10 3 13 5 23 7 25 9 40 10 42 12 45 15

If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units.

71. ## Calculus

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

72. ## Physical Science, ipc

Which can you do to reduce the power consumption in your home? ________________________________________ A. Add more circuit breakers. B. Wire more parallel circuits. C. Replace 75-watt light bulbs with 40-watt light bulbs.

73. ## math

The angle of depression of two points on opposite sides of a building are on the same horizontal level with the foot of the buiding are 58 and 49 respectively from the top of the building. If the building is 38m tall, calculate the distance between the

74. ## economics

how would a leader of a developing nation, a us citizen whose income is in the top 1%, and a us citizen whose income is in the bottom 5% talk about scarcity and trade-offs?

75. ## Pythagorean Theorem

Which is closest to the length of the diagonal of a square whose sides measure 20 cm?

76. ## Pythagorean Theorem

7. The following are the lengths of the sides of four triangles. Which is a right triangle? Triangle EFG Triangle HIJ Triangle KLM

77. ## math

if the selling price is 4/3 of cost price, find the profit % in the transaction?

78. ## Pythagorean Theorem

Pythagorean Theorem - david, Thursday, July 15, 2010 at 2:10pm EFG 3,6,9 HIJ 60,156,144 KLM 56,102,105 NOP 36,48,64 The following are the lengths of the sides of four triangles. Which is a right triangle? a.Triangle EFG b.Triangle HIJ c.Triangle KLM

79. ## Pythagorean Theorem

Which is closest to the length of the diagonal of a square whose sides measure 20 cm? a.20 cm b.28 cm c.40 cm d.200 cm

80. ## algebra

On January 1st a savings account showed a balance of \$280. How much interest will be earned by the end of the year at an annual rate of 5 1/4?

81. ## Algebra

Hi,I have a linear model with equation p = 5.1t - 28, where p is the number of breeding pairs of birds and t is the year. I need to use algebra to find the year in which the linear model predicts the breeding pairs will exceed 500. Any help appreciated.

82. ## precalculus

Hi, I need help with a problem about power functions and logarithms. It is found that logx and logy are linearly related show that y can be expressed as a power function of x. Thank you.

83. ## Math

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

84. ## Physics

"If a small planet were located 8 times as far as the Earth's distance from the Sun, what would be its period in Earth years?" (22.5 earth years) As a note, we are given a table with all of the planets' masses and radii.

85. ## math 208

find the slope and y-intercept for each line. x+2y=3

86. ## math 208

graph the line using its y-intercept and slope. y+4x=8

87. ## math 208

write each equation in slope-intercept form. y+3=-3(x-6)

88. ## college

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets,

89. ## physic

Charge must be present at a location in order for there to be electrical potential energy. Must charge also be present at a location for there to be electric potential? I know it's no but why?

90. ## math

Donna does 26 sits-ups on her fifth day of practice. If she has done 5 more each day than the day before. how many sit up did she do the first day. my answer was 6 but my mom don't agree

91. ## math 117

I am having an issue solving this appendix.... Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space

92. ## math

Mitch and Jane met at the mall today. Mitch goes to the mall every 3 days and jane goes to the mall every 5 days. How many times will they meet again in the next 3 weeks? Is it 3 or 4 think it 3

93. ## algebra math 208

write each equation in slope-intercept form y+3= -3(x - 6)

94. ## Science: Astronomy

Why have so few visual binary star systems been fully analyzed to reveal individual masses?