# Questions Asked onFebruary 12, 2008

1. ## Physics

The internal resistance of a dry cell increases gradually with age, even though the cell is not used. The emf, however, remains fairly constant at 1.5 V. Dry cells must be tested for age at the time of purchase by connecting an ammeter directly across the

2. ## Physics

1) A car traveling at 22m/s decelerates at a constant 1.5m/s^2. Calculate the time it takes to stop. I first calculated the distance which is 160 m. Then I used the formula d=vit+1/2at^2. I got a quadratic -0.75t^2+22t-160. I got 13 or 16 as my time, but

3. ## geometry

what is the area of a rectangle with a width of 12 feet and a length of 10?

4. ## math

robert bought a used car for \$1,500.00 if the sales tax is 5% what is the total that he paid?

Fiedler asserts that leader behavior is inflexible and cannot be readily changed. Do you agree or disagree with this assertion? Why?

6. ## algebra

Add. Simplify if possible. 7/9z^3 + 1/21z^3 I came up with 49+3z/63z^3 Is this correct?

7. ## Calculus

Vanna Red sells the vowels a, e, i, o, and u each for a different price but less than \$250. Consonants are free. You must pay separately for each occurrence of a vowel in a word. Audacious sells for \$260, equivocations for \$340, inimitable for \$225,

8. ## calculus

let f(x)=0.5x^3-4x^2-2x+5.a.use n deriv to graph f(x),f'(x),f"(X)on the window xmin = -5,xmax=10,ymin= -50,ymax= 10

9. ## calculus

A ball of radius 10 has a round hole of radius 5 drilled through its center. Find the volume of the resulting solid.

10. ## Algebra

What is the focus of a parabola? And can the directrix be anywhere not on the focus? I'm confused!

11. ## Chemistry

You are to determine the mass of O2 that can be produced from 25 grams of HgO. Don't forget to balance the equation first! this is the equation: HgO -> Hg + O2

12. ## maths

find the stationary points of the following function f(x)=x^3-3x^2-24x-7

13. ## Chemistry

I'm so confused! Al + O2 -> Al2O3 This is supposed to be a balanced equations but how did it go from 2 oxygens to 3?

14. ## math

what is the perimeter of a triangle which sides mesure 6,8,and 10 inches?

15. ## english

the subjuect of a sentence may be what parts of speech?

16. ## Physics E&M

A slab of metal of volume V is made into a rod of length L. The rod carries current I when the electric field inside is E.Find the resistivity of the metal?

17. ## chemistry

Calculate how much acetone (in grams and in kilograms) needs to be weighed to assure that you placed 1.25 liters of acetone inside a bottle that needs to be shipped to a chemical laboratory. For the density use 0.7857 g/mL.

18. ## chemistry

The balanced reaction is CaCO3 + 2 NaF -> CaF2 + Na2CO3 If you start with 20.0 grams CaCO3, how many moles of CaCO3 do you have? 20.0 2.00 .200 .0200 .0386 If you start with .500 moles of NaF, how many moles of CaF2 will form .500 1.00 1.50 2.00 0.250 What

19. ## chem

2H202--> 2H20 +O2 Given that you started with ½ cup of H2O2, what was the mass of each product in the reaction? (1/2 cup = 118.3 mL, density of H2O2 is 1.4 g/mL)

20. ## math

what does a centimeter dot array look like?

21. ## math

Cathy and Judy bought some postcard packets.altogether there were 48 cards.Cathy bought three packets with 8 cards each.The packets Judy bought had 12 cardsin each.how many packets did Judy buy.

22. ## accounting2

how to do Plant asset Records

In what ways does diversity make conflict into a positive result? How can the appreciation and encouragement of people to be themselves and share their thoughts result in cohesiveness and effectiveness?

What are the similarities and differences between profit and profitability?

25. ## English

John and I are going to the store. Would you like to come along with a) me and him? b) him and I? c) I and him? d) him and me? correct answer is b?

26. ## English

The clerk will wait on the person ___ is next. a) who b) whom c) whoever d) whomever I think it is A

27. ## internationnal economics

Describe the driving business forces in both the foreign and domestic environment. In what ways do they operate differently? Why? Provide an example.

28. ## English

___ are going for a walk. a) He and I b) Me and him c) Him and me d) I and he Again, I think it is A

29. ## math

if 20 counters are the whole set,what fraction of the set is 16 counters?

30. ## algebra

Divide and simplify -35+7w / 121w-605 ______ __________ 5 25 I know you invert the second half of the equation to multiply and then I am stuck.

31. ## Calculus

Your high school softball team has won ten games and lost five games. To get into the playoffs, your team must win at least 80% of the games that it plays. If your team wins all its remaining games, it makes the playoffs. What is the fewest number of games

32. ## Calculus

What is the least positive integer that has exactly thirteen factors?

33. ## Calculus

On !@#\$%^&'s birthday, his brother Harry is seventeen years younger than three times !@#\$%^&'s age. The boys father, Tom, is twelve years older than twice Harry's age. If !@#\$%^& is seven years younger than his brother, how many candles are on !@#\$%^&'s

34. ## Calculus

What is the tens digit of 0! + 1! + 2! + 3! + ... + 2000!?

35. ## math

Cecil has a mysterious money machine that will double any amount of money placed in it and add \$5.00 to the doubled amount. Yesterday, he placed a certian amount of money in the box, got a new amount, then placed the new amount back in the box. Then he had

36. ## algebra

Subtract. Simplify if possible. 6/x+b - 6/x-b

37. ## spanish

What were the indegenous people of Peru called? All I know is that they were not called the Incas.

38. ## math

what are the place valuse for decimals?

39. ## algebra

Solve. 8/w = 9/w - 1/2 The solution is:

40. ## Chemistry

Could anybody simply explain how exactly Joseph Thomson discovered that atoms were not "indivisible" and that they were actually made of subatomic particles? (electrons) I've been having trouble understanding how exactly it happened, and everything on the

41. ## Biology

How do you explain the relationships between allele position and crossover frequency?

42. ## English - Caesura and Enjambment

O Rose thou art sick the invisible worm. that flies in the night in the howling storm: has found out they bed of crimson joy: and his dark secret love does thy life destroy. Is it correct to identify "in the howling strom:" and "of crimson joy:" a caesura

43. ## Biology

What are dominant and recessive alleles?

44. ## accounting

Evaluate the following project using an IRR criterion, based on an opportunity cost of 10%: CF0 = -6,000, CF1 = +3,300, CF2 = +3,300. A) Accept, since IRR exceeds opportunity cost. B) Reject, since opportunity cost exceeds IRR. C) Accept, since opportunity

45. ## Chemistry

Does anyone know of any sites that make learning to balance equations easy? I just transferred to a new school and the chemistry class is way ahead of my old class. I really don't get it. Please help since there is a test tomorrow and it's on stuff that

46. ## Math

I need to find the volume of a prism whose base is a hexagon

47. ## Physics E&M

A 68.0 g hollow copper cylinder is 90.0 cm long and has an inner diameter of 1.0 cm. The current density along the length of the cylinder is 1.60×10^5(A/m^2). What is the current in the cylinder? Ive tried many ways but am not getting the correct answer.

48. ## happy valentines!

Spanish word for "happy valentines day"...thanks...

49. ## algebra

graph and check to solve the linear system. problem: 2x-3y=-3 x+6y=6

Comparing Sexism with Racism Feminist writers Marylyn Cudd and Leslie Jones, suggest that comparing sexism with racism, can help indentify women’s oppression. “Sexism” a comparative analysis essay, contains that, racism, like sexism, is grounded in

51. ## Chemistry

What is the type of packing for a body center cubic and a simple cubic? use ABCs to explain please.

52. ## physics

At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^-3m, and the area is 0.016m^2. The temperature at the outside surface of the cup is 35 degree C. The latent heat of fusion for ice is 3.35*10^5 J/kg.

53. ## chemistry

Fill in the blank For all three of the cubic lattices (unit cells), all of the ______ and _____ are the same size. (body center, face center, simple cubic)

54. ## calculus

a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into th tank of fish. the glass is 10 feet high, 25 feet long and the top of the glass is 3 feet below the top of the water. the

55. ## algebra

Find the LCM 15b^3a^3, 5b^8,a^2, 6b^2a^6

56. ## Chemistry

You are to determine the mass of O2 that can be produced from 25 grams of HgO. Don't forget to balance the equation first! this is the equation: HgO ? Hg + O2

57. ## Chemistry

You are to determine the mass of O2 that can be produced from 25 grams of HgO. Don't forget to balance the equation first! this is the equation: HgO ? Hg + O2

58. ## maths

find the y coordinates of each stationary points f(0). f(x)=x^3-3x^2-24x-7

59. ## English

What are some things that is like your heart beat...like a clock but the ticking of clock is too slow...like when you are scared, your heart beats very fast...what can be related to that? Are there any idioms that decribe your heart beats?

60. ## algebra

how do you use the substitution method to solve the linear system? -2x-5y=7 7x=y=-8

61. ## History

My assignment is to write a newspaper article for a British coloum in summer of the year 1914 when world war one just began. I need to state the reasons why the world war one began through the eyes of Britain. I don't know how to start or what to say can

62. ## culture diversity

What is the political situation on these two groups the Mexican Americans and Puerto Ricans in the United States ?

63. ## Math - Algebraic Vectors

Let vector u = [3, 2] a) Determine each vector i) 2u = 2[3, 2] 2u = [6, 4] c) Determine the length of each vector in a. MY QUESTION***** -------- Do you subtract the values to determine the length? Length = 2u - u Length = [6, 4] - [3, 2] Length = [3, 4]

64. ## physics

A closed box is filled with dry ice at a temperature of -78.5 degree C, while the outside temperature is 21.0 degree C. The box is cubical, measuring 0.350m on a side, and the thickness of the walls is 3.00*10^-2 m. In one day, 3.10*10^6 J of heat is

65. ## science

what are six ways to tell minerals apart?

66. ## Algebra II

I asked this question yesterday, but I wasn't clear about the response. Could someone please explain it again? A searchlight is shaped like a paraboloid of revolution. If the light source is located 2 feet from the base along the axis of symmetry and the

67. ## English

I am trying to find a connection between Invisible man by Ralph Ellison and got tell it on the mountain by James Baldwin. The only connection I can find is that both characters are somehow betraying their race. However, in invisible man I can find that

68. ## English dialogue

A: What does he usually do? (Showing a picture in which a boy is getting up.) B: He usually gets up. (The partner answers.) Is the answer of the partner suitable? (This is a simple activity using the present tense.)

69. ## English/History

Was there something happening with women during the 1900s? i`m thinking like they were saying that they could do anything men could do. Some special event that took place?

70. ## English expression

Look at the sun which is shining brightly in the middle of the sky. A dog is running on the field. There are three trees in this picture. A: When do you see these things? B: In the afternoon. (The partner says.) This is also a simple activity. There are

71. ## chemistry

Find the unit cell (simple, bcc, fcc), type of holes where the smaller ions are found (tetrahedral, octrahedral, cubic), and number of cations and anions per unit cell for the following compounds: CdSe CsI Li2O KBr NaCl ZnS(I)

72. ## math its been years since school

a cube measures 3 inches on all its sides. Wgat is its volume in inches?

73. ## spell

What is the Latin route of conquer???

74. ## English

What does diction mean? I looked it up but i`m not understanding what i`m suppose to do when the question says how the author make the story beleivable through diction?

2/3+4/6+?

76. ## science

Does paper contain starch?

78. ## math

what is the average of 132,145,140,128? do u add them all togher then divide ? or just add them and get the answer?

79. ## calculus

how do you integrate x^2/(9+x^6)

80. ## Math

My teacher gave me a box and told me to see how many I could fit in the class room without taking out the heater or the desk. Ive tried many different things but I just cant figure it out. I don't know the measurments or anything. How do I do It? The desk

81. ## algebra 1

use the substitution method to solve the linear system. 9x+6y=3 3x-7y=-26 please show me an example of how to do it.

82. ## chemistry

What is the sum of the coefficients (including “1”) of the balanced equation? __CaCO3 + __NaF __ CaF2 + __Na2CO3 4 5 6 7 8 If you start with 20.0 grams CaCO3, how many moles of CaCO3 do you have? 20.0 2.00 .200 .0200 .0386 If you start with .500 moles

83. ## math Thanks to everyone for the help it's needed!

what would be the radius of a circle with a diameter of 8 inches?

84. ## English`

Whats one word that means someone that in not knowing something?

85. ## Statistics

When calculating percentiles, ie the 33rd percentile, do you use the lower limit of the group that contains the 33rd percentile? as in this case: 70-79 11 46 80.7 60-69 9 35 61.4 50-59 8 26 45.61 40-49 7 18 31.58 Would you use the number 49.5??

86. ## calculus

how do you integrate x^2/(9+x^6)

87. ## physics

Three blocks are located on a horizontal table. The coefficient of kinetic friction between the blocks and the table is 0.276. They are connected by a massless cord, as shown in the figure below, and pulled to the right. The masses of the three blocks are

88. ## communication

I am having trouble with giving an example of an ineffective listener.

89. ## bio

do skeletal muscle cells have cilia or flagellum

90. ## financial management HSA

I have to write a paper for my financial management for human service administrators class about a community foundation. Can anyone give me some interesting examples to write about?

91. ## calculus

1. a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into the tank fo fish. the glass is 10 feet high, 25 feet long and the top fo the glass is 3 feet below the top of the water. The

What makes some companies more profitable than others?

93. ## chem

The "proof" of an alcoholic beverage is twice the volume percent of ethanol, C2H5OH, in water. The density of ethanol is 0.789g/mL and that of water is 1.99g/mL. A bottle of 100-proof rum is left outside on a cold winter day. a) Will the rum freeze if the

94. ## Math

how do u find the area and circumference of a circle if the radius is 2.5 ?

95. ## Maps

I need to find a map where I can highlight countries on it. It has to have Switzerland, Europe, and The United States included on it.

96. ## science

what is the normal phase for the element neon

97. ## history

who stood behind Ned Kelly when he was going to be hung

98. ## sociology

Give four examples of social movements, current or past, and describe the key features of each movement. I am not sure what I am looking for but see If I am on the right track please Gay and !@#\$%^& Rights Movement is to help gain civil right for people

99. ## statistics

3 PROFESSORS WANT TO KNOW IF HAVING 500 STUDENTS IN THEIR CLASS IS DETRIMENTAL TO PROPER LEARNING. 1ST PROFFESSOR RANDOMLY HANDS OUT THE QUESTIONNAIRE TO 50 STUDENTS; ALL 50 ARE RETURNED TO HIM DURING CLASS. 2ND PROFFESSOR HANDS OUT THE QUESTIONNAIRE TO

100. ## science

can parasites be animal like protists and fungi?

101. ## chemistry

state specifically how you would make a conclusive test for an iron (III) salt.

102. ## Calculus III

(24cos(8x))/(1+(sin^2(8x))) Integrated from (pi/16,-pi/16

103. ## algebra 2

1. solve: x^3 =4x 2. solve: (x-3)^2 = -4 3. solve: (6 +5i) ^2 4.Two integers have a sum of -4 The sum of their squares is 40. What are the two integers?

104. ## English"The cry of the Children"

Is Elizabeth Barrett Browning's poem "The Cry of the Children" an effective political vechicle?

105. ## science

how is relative dating used to evaluate geologic time.

106. ## modernization

I need four examples of modernization I have two I believe any suggestions Examples of modernization the how the increased speed of communication through computer technology verses the Old fashion writing style. The way we used to have to ride a horse or

107. ## ALGEBRA

HOW DO YOU FACTOR A^3-27. PLEASE EXPLAIN IN DETAIL

108. ## alg 2

Write an exponential function whose graph passes through the given points. 1. (0, 3) and (1, 15) 2. (0, -5) and (-3, -135) 3. (0, -0.3) and (5, -9.6)

109. ## Trig functions

1)Write the equation sin y= x in the form of an inverse function. A)y=Sin-1x B)x=Sin-1y C)y=sin-1x D)y=Sinx I chose A 2)Solve y=Arcsin1/2 A)-5pi/6 B)5pi/6 C)-pi/6 D)pi/6 I chose D 3)Find the value of Sin-1(-1/2) A)-30 degrees B)30 degrees C)150 degrees

110. ## math

5. At 2pm the number of bacteria in a colony was 100, by 4pm it was 4000. Write an exponential function to model the population y of bacteria x hours after 2pm. 6. Using the information in problem 5, how many bacteria were there at 7pm that day? 7. Kaplan

111. ## Chemistry

How does the product look like when you mix sodium bicarbonate with calcium chloride?

112. ## spanish

Can you please tell me if my paragraph is correct? Thanks. Tenia hoy un mal dia. Primero me cai de mi cama. Entonces no habia agua caliente. Finalamente la parte peor de toda eq que camine' en heces del perro. El dia es desmesurado.

113. ## calculus

1. a large vertical rectangular plate of glass is to be inserted in the wall of an aquarium underwater so visitors can see into the tank fo fish. the glass is 10 feet high, 25 feet long and the top fo the glass is 3 feet below the top of the water. The

114. ## science

what is (aenosss) unscrambled

115. ## math

a wild preserve can support no more than 250 gorillas. how long will it take for the gorilla population to reach the carrying capacity of the preserve dp/dt = 0.0004P(250-P) and p = (250)/(1+7.929e^-.1t) show that the function is a solution of a logistic

116. ## English

I need help. I am writing s paper and we have to have a word citing page. How do you type it out for the websites and then in the paper when you type the facts and once in awhile you write between these ( ) what do you put there the website what. Please

117. ## home economics

What are the american and canadian food groups?

I'm stumped. Would someone please guide me? The question is: 175% of a number is 50. What's the number? Thank you!