# Questions Asked onMarch 21, 2010

1. ## APChem

Hi I tried to understand this but I don't know why the answer is B: Which one of the following pairs cannot be mixed together to form a buffer solution: A) NaC2H3O2, HCl B)RbOH, HBr C) NH3, NH4Cl D) H3PO4, KH2PO4 E) KOH, HF The answer is B but could you

2. ## chemistry

When excess solid Mg(OH)2 is shaken with 1.00 L of 1.2 M NH4Cl solution, the resulting saturated solution has pH = 9.30. Calculate the Ksp of Mg(OH)2 I am not sure where to even begin on this problem.

3. ## Math

An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium My answer is 1170 but the way I figured out the problem was by listing numbers 1-30. the problem state

4. ## Physics

A 0.32 kg meter stick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 39.0 cm toward that end. What is the mass of the necklace?

5. ## chemistry

what is the maximum number of grams of PH3 that can be formed when 6.2 g of phosphorus reacts with 4.0 g of hydrogen to form PH3

6. ## pH levels

Rank the following solutions in order of decreasing [H3O^+]. .10 M HC2H3C2 .10 M HC6H5O .10 M HF ,10 M HBr I think the correct order is: HBr>HF>HC2H3C2>HC6H5O am i right?

7. ## APChem

Hi! Thank you for your help... A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 66.2 mL of KOH is ______M. (The answer is supposed to be 1.00X10^-7) How do I set this problem up? I

8. ## calculus

s(t)=-16t^2+v(subscript0)t+(subscrpt0) a silver dollar is dropped from the top of a building that is 1362 feet tall. a) determine the position and velocity f'cn for the coin. b) determine the avg velocity on the interval [1,2] c) find the instantanous

9. ## Social Studies

Why do you think dictators need to find scapegoats for their nation's ills? Explain.

10. ## Chemistry

What are the major organic products of this reaction: CH3CH2CH2COCH2CH3 (an O is double bonded to the C before the O) + H2O --> (acid is above the arrow) DrBob222- There are 2 oxygens. I said there is an O double bonded to the C. So there is the O after

11. ## Chemistry

There exists a correlation between maximum electrostatic potential and acid strength. As pKa decreases (acid strength increases), the maximum electrostatic potential for a molecule increases. Given a particular acid, is there any way to determine the

12. ## Chemistry

For the following electrochemical cell, what is the correct, balanced reaction? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) A. Cu(s) + Cu2+(aq) → Ag+(aq) + Ag(s) B. Cu(s) + Ag+(aq) → Cu2+(aq) + Ag(s) C. Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) D. Cu2+(aq) +

13. ## chemistry

what is the product of reaction K3(Al(C2O4)3).3H2O with KMnO4 in the present of H2SO4?

14. ## Physics

Calculate the specific heat of a metallic element if 314 joules of energy are needed to raise a 50.0 g sample from 25 to 50 degress C ? :)

15. ## Chemistry

here is the question. it is a fact that when you add acetone to saturated sodium chloride, the equilibrum shifts towards the right. what observation supports this fact? what is the role of acetone in shifting the equilibrium towards the right side? What

16. ## AP Chem

Determine the [H3O^+] of a 0.240 M solution of formic acid.

17. ## ocean county college

A 150 g sample of metal at 55.0 C raises the temperature of 150 g of water from 23.0 C to 35.0 C. Determine the specific heat of the metal in J/g C. Hint: #1 First find heat absorbed by water using formula q = mass x specific heat x change in temp (of

18. ## Writing research

What were some arguments and counter arguments of Martin Luther King's " I have a dream" speech? I have recognized bias, fallacies, and rhetorical devices. I am having trouble identifying counter arguments.

19. ## Chemistry

When you add CuSO4+KI the substance stays clear and when you add hexane to it it became brownish yellow and a red substance was present how do you explain this?

20. ## Math

Find the quadratic function that has the indicated vertex and whose graph passes through the given point. Vertex: (2,3) Point: (0,2) I do not know how to do this! Please explain!! Thank You

21. ## Physics

You pull downward with a force of 27 N on a rope that passes over a disk-shaped pulley of mass 1.3 kg and radius 0.075 m. The other end of the rope is attached to a 0.61 kg mass. Find the tension in the rope on both sides of the pulley. I found that the

22. ## Biology

Match the terms with the correct description: a. regulates supply of gases from ATP production b. provides negative feedback signals c. protects body against foreign dangers d. "rapid transit" for liquids and gases e. primary "regulator" of sensory

23. ## Algebra

The volume of a sphere is given by: V=4/3 pie r cubed. Use the formula, and show your workings, to find out what happens to the volume of a sphere if r is halved and r is trippled? Please help as this has just completly lost me, i end up with V = 4/3 Pie r

24. ## Organic Chemistry Lab

ISOLATION OF CHLOROPHYLL AND CAROTENOID PIGMENTS FROM SPINACH: What would happen to the Rf values of the pigments if you were to increase the relative concentration of acetone in the developing solvent ? I said the Rf values would be higher because Acetone

25. ## World History

How was mao's vision of communism different from that of lenin?

26. ## Physics

100-g sample of substance is heated to 100˚C and placed into calorimeter cup containing 150 g of water at 25˚C. The sample raises the temperature of water to 32.1. What is the specific heat of the substance?

27. ## Chemistry

What is the percent by mass of Ca3N2?

28. ## Chemistry

The solubility of compounds containing the carboxylic acid group can be increased by reaction with a) sulfuric acid b) nitric acid c) sodium hydroxide d) water e) benzoic acid Would it be sodium hydroxide since it is a base?

29. ## physics

A.A pair of narrow, parallel slits separated by a distance of 0.335 mm are illuminated by green laser light with wavelength = 543.0 nm. The interference pattern is observed on a screen 2.43 m from the plane of the parallel slits. Calculate the distance

30. ## Math

Using the Substitution method solve 7x+5y=-23 -6x+y=25

31. ## optics ray tracing

light travels in a straight line, why is this important for the technique of ray tracing?

32. ## Social Studies

How does geography affect where people live and work in Canada?

33. ## CHEMISTRY

I have two: 1. why can you not find the mass of a beaker, water, vinegar and alka seltzer in one step rather than recording alka seltzer by itself? 2. what is maximum volume of vinegar that can be neutralized by one alka seltzer tablet and explain answer?

34. ## Finite Math

If A = (aij ) is a matrix of size 2x3, and if aij = 2i- 3j for all i and j write down A.

35. ## math word problem

There are 10 women and 8 men in a club. How many different committees of 6 people can be selected from the group if equal numbers of men and women are to be on the committee? I think it would be 2, because half of 6 is 3, so 3 are men and 3 are women. 2

36. ## Calculus

Find the derivative of y with respect to x: y=(1+cos²x)^6 y'=6(1+cos²x)^5 How do you derive inside the brackets? The answer says -sin2x, but wouldn't it be -2sinx, using the chain rule.

37. ## Chem

Consider this reaction: CO (g) + H2O (g0 CO2(g)+H2(g) kc=102 at 500 K A reaction mixture initially contains 0.145 M of CO and 0.145 M of H20. What would be the equilibrium concentration of [CO]? I so far have kc= [H2][CO2]/[CO][H2O]= 102 I know i have to

38. ## english

For the Unit 1 Discussion Board assignment, you will: (1) select a topic from the list below, (2) develop a thesis statement from your topic selection and post your writing strategies for developing your thesis, (3) explore the features of the MyCompLab

39. ## economics

A New Hampshire resort offers year-around activities: in winter, skiing and other cold-weather activities; and in summer, golf, tennis, and hiking. The resort’s operating costs are essentially the same in winter and summer. Management charges higher

40. ## Physics

A capacitor of capacitance C= 10mF, is charged using a battery of potential V, through a resistor of resistance R = 250 ohms. the charge of the capacitor is given by Q(t)=CV[1− e ^ (−t/RC)] Find an expression for the current passing through the

41. ## Accounting

Your company is considering a replacement of an old delivery van with a new one that is more efficient. The old van cost \$30,000 when it was purchased 5 years ago. The old van is being depreciated using the simplified straight line method over a useful

42. ## math

it costs mr kringle \$10 to make 100 gaint pretzels for his bakery. if he sell his pretzels for .25 each, how much profit will he make after selling all 100 pretzels?

43. ## finance

Your company is considering a replacement of an old delivery van with a new one that is more efficient. The old van cost \$30,000 when it was purchased 5 years ago. The old van is being depreciated using the simplified straight line method over a useful

44. ## Algebra

One pump can drain the pool in 11 minutes. When a second pump is used, it only takes 9 minutes. How long would it take the second pump to drain the pool if it were the only pump in use?

45. ## algebra

Marlene rides her bycicle to her friend Jon's house and returns home by the same route. Marlene rides her bike at constant speeds of 6mph on level grond, 4mph when going uphill and 12mph when going downhill. If her total riding time was 2 hours, how far

46. ## Computer Networking

Bispling International Banking has expanded recently to included two new buildings for a total of three, roughly arranged in a triangle with each building about 500 meters apart. Previously, these buildings were wired with Cat3 UTP 10BaseT Etherent. The IT

47. ## Biology

*Yawn* Match the terms with the correct description: a. regulates supply of gases from ATP production b. provides negative feedback signals c. protects body against foreign dangers d. "rapid transit" for liquids and gases e. primary "regulator" of sensory

48. ## science

Why did scientists once think there were volcanoes on the moon? What evidence from the Apollo landings makes this unlikely

49. ## Chemistry

What are the major organic products of this reaction: CH3CH2CH2COCH2CH3

50. ## Physics

Hi, I've been having issues with solving this problem. Could anyone help? Two blocks, of masses M = 2.0 kg and 2M are connected to a spring of spring constant k = 215 N/m that has one end fixed, as shown in the figure below. The horizontal surface and the

51. ## world history

What single event set in motion the start of WW1?

52. ## english: poem

do you think this poem's emotion is optimistic? Calgary 2 A.M. In spite of the fact that it's twenty below and winter has gone on for five long months, in spite of being starved, starved almost to death for greenness and warmth, flowers and birds, in spite

53. ## Math

Identify n(S) for the given set. S = {f, h,m, r} A) 4 B) 0 C) Infinite D) 3 is the answer c, since the given set can have a unlimted number of elements. or is it b, since the letters are not in order?

54. ## Math

Is anyone familiar with base ten? I need to show my work on how I received my answer. Write the numeral in base ten. 200six =532

55. ## Math (trig)

In ABC, sin A equals 2/3 , sin B equals 4/5 , and side a equals 20 Find side b?

56. ## chemistry

At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 2NO(g) 3 + 2 + 2 ⎯⎯→ 3 . If all of the nitric acid produced by

57. ## Chemistry

How do i write the equation betwen ethanoic acid CH3COOH and urea (NH2)2CO? I think they form carbondioxide and an ammonium salt, but how do i write the actual equation?

58. ## Math

What do the digits in the number 15 add up to? Answer 1+5=___. Using single digits, how many different ways can you add up to 6?. Example: The least number of digits is 2, and it is 1+5=6. The greatest number of digits is 6, and it is 1+1+1+1+1+1=6. 1.How

59. ## Finite Math

If A = (aij ) is a matrix of size 2x3, and if aij = 2i- 3j for all i and j write down A.

60. ## Algebra

One pump can drain the pool in 11 minutes. When a second pump is used, it only takes 9 minutes. How long would it take the second pump to drain the pool if it were the only pump in use?

61. ## social studies

what were the social, economic, cultural and political consequences of the Industrial Revolution? explain.

62. ## Social Studies

What was the main difference between the Hudson Bay Company and the Northwest Company in terms of the way their businesses were structured?

63. ## algebra

How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!

64. ## Chemistry

Sorry I accidently hit enter and it posted my question before I was finished... What are the major organic products of this reaction: CH3CH2CH2COCH2CH3 (an O is double bonded to the C before the O) + H2O --> (acid is above the arrow)

65. ## algebra

really struggling with this problem admission to a baseball game is \$2.00 for general admission and \$5.50 for reserved seats. The receipts were \$3408.00 for 1025 paid admissions. How many of each ticket were sold?

66. ## Trigonometric

Find the exact value of cos7(pi)/12 using sum and/or difference identities.

67. ## com150

Provide three credible sources for healthy eating. my subpoints are education, preparation, organization and effort.

68. ## math word problem

Jim is making a diagram of the solar system. If he draws Neptune, which is 2795 million miles from the sun, 10 inches from the sun on his paper, how far away (to the nearest tenth of an inch) from the sun should he draw Mars, which is 142 million miles

69. ## math

one canned jucie drink is 15% orange jucie; another is 10% orange jucie. How many liters of each should be mixed together in order to get 5L that is 11% orange jucie? How many liter of the 15% orange jucie? how many liters of the 10% orange jucie?

70. ## Algebra

Write an equation of the line satisfying the given conditions. Parallel to the line y=-5x-6 and a y-intercept of -2

71. ## social studies

list five specific types of power that the president has and give one example of each?

72. ## Math

Solve 4y-3 less than 7y-4 is the answer less than 2?

73. ## Math

Miguel's insurance compnay will replace his car if repair costs exceed 80% of the cars value. The car resently substained \$10,800 worth of damage, but it was not replaced. What was the value of his car. A)Less than 13,500 B)More than 8640 C)13500 D)Greater

74. ## Math

2) Find f x g, g x f, and f x f f(x) = 3sqrt x-1 g(x) = x^3+1 For the f(x) the 3 is little above the sqrt sign. I do not understand how do find these.

75. ## com140

how will you apply the knowledgeyou have gained about effective buisness communication in your current or future job and college courses?

76. ## French History

Is this good information about the Notre Dame cathedral? Notre-Dame's first version was a magnificent church built by Childebert I, the king of the Franks at the time, in 528, and was already the cathedral of the city of Paris in the 10th century. However,

77. ## Physics

Light travels in a line of optical fiber by total internal reflection between a core of refractive index 1.48 and a cladding 1.46 refractive index. The critical angle for total internal reflection to occur inside the core of the fiber is ... 80.6º 48.8º

78. ## math

Solve 4y-3 less than 7y-4

79. ## Physics

A mass spectrometer is used to separate isotopes. If the bean emerges with a speed of 374 km/s and the magnetic field in the mass selector is 1.5 T, what is the distance between the collectors for 235U+1 and 238U+1? The mass of 235U+1 is 235 u and the mass

80. ## trigonometry

A lighthouse BC of unknown height stands on the edge of a cliff AB. From a point O, 2500 ft from the base of the cliff, an observer measures the angles of elevation of the top and bottom of the lighthouse and finds them to be 15°40' and 12°13'. How high

81. ## Geography

6. Throughout East Asia, most of the labor force works in a. trade b. farming c. mining d. aquaculture I'm lost between B and D

82. ## physics

if 1 kilogram of ice is dropped in 9 kilogram of water at 50 degree centigrade. what will be final temperature of water. while the latent specific heat of fusion of ice is 336000 joule/kilogram

83. ## Math

Identify n(S) for the given set. S = {f, h,m, r} A) 4 B) 0 C) Infinite D) 3 is the answer c, since the given set can have a unlimted number of elements. or is it b, since the letters are not in order?

84. ## algebra

Sue can shovel snow from her driveway in 40 minutes. Tom can do the same job in 35 minutes. How long would it take Sue and Tom to shovel the driveway if they worked together?

85. ## social studies

can someone help me with a website or reference on creating a timeline tracking the major themes/paragism shifts in american history from the developement of sectionalism in the early 1800's throught the end of the prgressive era in the early 1900's

86. ## Biology

During the follicular stage of the menstrual cycle, both FSH and estrogen are high, but aren't estrogen and FSH on a negative feedback loop? Is it just because FSH is not directly involved in the increase of estrogen (it is the follicle that increases

87. ## Math

Hockey teams recueve 2 points when they win and 1 point when they tie. One season, a team won a championship with 66 points. They won 12 more games than they tied. How many winds dd the team have and how many ties?

88. ## spanish

¿Dónde te graduaste de la secundaria (high school)?

89. ## Algebra

Use the Rational Theorem to list the possible rational roots. f(x)=x^2+2x+1 f(x)=x^2-2x+5 f(x)=x^2+4x-5

90. ## Social Studies

What is the process of an amendment? Could someone sums up how can 1 get pass? Thanks

91. ## Chemistry

The solubility of compounds containing the carboxylic acid group can be increased by reaction with a) sulfuric acid b) nitric acid c) sodium hydroxide d) water e) benzoic acid

92. ## Pre-Cal

Identify any asymptotes of the graph. y = 1.08^5x

93. ## History

Why did relations between the Superpowers change in the years 1962-75?

94. ## Human Capital

What is the relationship between the business strategy and the organizational culture regarding staffing decisions?

95. ## Calculus

Find the derivative of y with respect to x: y=3sin^4(2-x)^-1 y=[3sin(2-x)^-1]^4 y'=4[3sin(2-x)^-1]^3 (-3cos(2-x)^-1)(-1) -(2-x)^-2 y'=[12cos(2-x)^-1][3sin^3(2-x)^-1][2-x]^2 but the answer does not have a 3 in front of sin. What happened to the 3?

96. ## algebra

How would u solve 2r\r+5 -2(r+5)(r-4)=4(r-4) I don't kow if I should distribute the negative 2 to (r+5) What should I do from here?

97. ## Algebra

Solve by the elimination method 2r-5s=1 5r+2s=46 The solution is _______, or there are infinitely many solutions, or there is no solution

98. ## critical thinking

Identify any examples of bias presented by the author. If none exist, explain how you determined this Identify and name any rhetorical devices used by the author. If none exist, explain how you determined this. Identify and name any fallacies used by the

99. ## math

Find the ordered pair using the elimination method. 4x+5y=3 8x+10y=6

100. ## English

Thank you very much very much for your help. I just wanted to make sure about the grammar in the following sentences, too. 1) He found many things which he wanted to take ashore. Therefore/so, he began searching for a boat in order to transport them to

101. ## Chemistry

Which of these solvents: hexane, ethanol,or distilled water, would work as effective grease removers?

Identify the vertex, intercepts, and zeros of the function. g(x) = x^2 + 8x + 11 Please help!!

103. ## Statistics

Consider pairs ,..., for i=1, ...,n. zi=cxi+d Express b sub(z*x) in terms of b sub(y*x) and a sub(z*x) in terms of a sub(y*x). I have been stumped on this one for hours! Sub (y*x) means its a subscript. Thank you to anyone who can help :)

104. ## Statistics

If Y' = a +bX for all i and a=the mean of Y - b*the mean of X, prove that SigmaY' = SigmaY (subscript i). Hint: replace a with mean of Y minus b*mean of X and take the sum of both sides of the equation--that is, SigmaY'(subscript i)=Sigma(mean of Y-b*Mean

105. ## College

Case Eastern Junior College awarded 26 varsity letters in crew, 15 in swimming, and 16 in soccer. If awards went to 46 students and only 2 lettered in all sports, how many students lettered in two of the three sports?

106. ## biology

two heterzygous parents are crossed.if the two locii are linked what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?

107. ## algebra

((5v)/(v^3-5v^2+6v))-((4)/(v-2))-((3V)/(3-V))

108. ## Chemistry

Determine the pH of each of the following solution. a solution that is 5.8×10^−2 M in HClO4 and 2.6×10^−2 M in HCl

109. ## Calculus

Find the derivative of y with the respect to x: y=sin‾²(x³) y'=cos‾²(x³)(3x²) y'=3x²cos‾²(x³) How come my answer is incorrect? Thanks in advance.

What is the solution of the interval notion? x less than 6 and x greater than -3

111. ## English

I wonder if you could have a look at the following summary of Chapter 4 of Robinson Crusoe which I need to prepare for tomorrow. I thank you in advance. 1) When Crusoe woke up, he found the weather clear and the storm over. The ship had been carried by the

What would be the right way to convert base 16 to base 10, such as for an example, 1BD base 16 to base 10?

113. ## Math 116

As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a) The sales representative here tells you they also have two floor plans available, but they only have 30

114. ## Math

Perform the indicated operations and reduce all results to lowest terms. Assume the variables are restricted to values that prevent division by 0. (x^2-y^2)/(x^2-2xy+y^2) divided by (3x+3y)/(7x-21) Could someone please show me how to do this so I can do

115. ## social studies

between 1962 and 1967 the supreme court reviewed and decided on four court cases involving law enforcement officers and persons accused of criminal acts. what were the four cases and have the decisions affected law enforcement today?

116. ## World History

What started the civil war in china?

117. ## Math

Given that P(A)= 1/36, what are the odds against A occuring? I found this formula in my chapter odds against A= 1-P(a)/P(a) Would it be 1-1/36 over 1/36? Or how do I go about it?

118. ## biotechnology

what would be the molar concentration of human DNA in a human cell?

119. ## English Research Project Information - Sadako

For my english research essay, I will need two print sources. I am doing the topic on Sadako (the girl from "A thousand Paper Cranes") The librarians at my school told me that they didn't have any books on her. Do you know of a reference/nonfiction book

120. ## health

Medical and clinical staffs, such as physicians and nurses, have roles and responsibilities different from those of hospital administrators. · Describe at least two roles of medical or clinical staff, and two roles of hospital administration that are

121. ## Chemistry

how many moles of hydrogen chloride would be needed to react completely with 15g of barium carbonate equation is given: BaCO3 + 2HCl to BaCl2 + H2O + CO2

122. ## Math

Could someone please help with this question. State the properties of y = 2sec(-2x + 180°) + 3. My answer: First I graphed y = 2sec(-2x + 180°) + 3 in the following way. 1)graph y=sec(x) 2) apply a horizontal compression by a factor of 1/2. 3) apply a

123. ## math

5x-y=36 5x+6y=-6 Find the solution in ordered pairs.

124. ## government

Without our two great political parties cutting across economic and geographic interests,can democracy as we know it have been made to function?

According to the United Nations,Canada is a great place to live. How do both natural resources and government policies combine to make this true?

126. ## economics

3. Consumer spending on durables falls, draw a graph to analyze the effects of this change in real interset. 4. The Canadian demand for Mexican Pesos is downward sloping and supply of pesos is upward sloping. Assume a system of flexible exchange rate

127. ## English

1. Tape a stick to/on/at the back of the puppet's body. 2. Tape a stick to/on/at each of the puppet's hands. (Which preposition do we have to use?)

what steps did the government take to respond to a demand by many Americans to control?

129. ## physics

Have tried many unsuccessful attempts at this project. Using only 3 letter size papers and clear tape, build something to allow a soft egg to drop unbroken. Used 1 rectangular paper as parachute, taped in corners by 4 long strips attached to an open paper

130. ## Civics

Are there any reliable websites that would give information and statistics on improvements that should be made to Immigration Canada?

131. ## Oceanography

I have an exam in oceanography coming up and I'm having a little trouble understanding directions. For example in my review sheet he asks question like this: In what compass direction does the coriolis force act in the following situations: An object

132. ## math

Mathematically, why is a manhole cover round?

133. ## algebra

Find the slope and y-intercept, write fractional answer in lowest terms. 2y+9x+6=19+9x

134. ## trigonometry

Establish the following identity. 1/1-cosx + 1/1+cosx = 2csc(squared)x

135. ## social study

what were the consequences of the progressive era? how did the movement change from the early period to the later period? what were some of the goals in the early period and what were some of the goals in the later period? did it accomplish its

136. ## english

With reference to the concept of Monomyth, what is the treatment of the hero’s ’separation’ and ‘initiation’ in A Doll’s House by Henrik Ibsen and Candide by Voltaire?

137. ## calculus

What is the derivative of x^2 -4y -tanxy=0

138. ## Science

When all of the hydrogen of the Sun is used up, it will turn into a _________?

139. ## Algebra

Solve by the substitution method 9x+8y=-5 x=40-9y The solution is _______ or there is no solution

140. ## Math

Identify the vertex, intercepts, and zeros of the function. g(x) = x^2 + 8x + 11 Please help!!

141. ## physics

Two horizontal parallel wires which carry currents I1 = 45 A (top)and I2 (bottom). The top wire is held in position, the bottom wire is prevented from moving sideways but can slide up and down without friction. If the wires have a mass of 9.2 g per metre

142. ## algebra

Find an equation of the line having the given slope and the given point. m=0 (o,-4) would it be y=-4?

143. ## Math

Simplify by removing factors of 1 9w-36/4-w What is the simplified form?

144. ## Math

If f(x)=4/2-x, find the f(a), f(a+h), and f(a+h)-f(a)/h, where h is not equal to 0.

145. ## Chemistry

lets say we have Cu(NO3)2 and then we add NaOH. so Cu(NO3)2 + NaOH and then we add HNO3 to it what wil happen?

146. ## Math

Give the ordered pair solution 2x-6y=24 3x-9y=-15

147. ## HRM240

I have a paper due tonight be midnight is it possible to have someone write it in time?

148. ## Algebra :\

these questions are: ELIMINATION USING MULTIPLICATION: 1. 2. 2x + 5y = 3 2x + y = 3 -x + 3y =-7 5x + 3y = 2 I NEED HELP ASAP!!!! HELP PLEASE!!!!

149. ## science

if you had a book on a table and gravity suddenly storp whay would happen to the book?

150. ## math

let f(x)=sqrt of 121-x^2 a. graph the function b. state the domain and range of f(x)

151. ## math

Solve 5x+16 greater than 1 and 2x-21 greater than -17.

152. ## math

I am a three-digit number i am less than 200 i am divisible by 12,and by 9 my units digit is less than my tens digit

153. ## Math

Write interval notion for the set {x -1 G.T. X G.T. -9} multiple choose A)[-9,-1) B)(-9,-1) C) (-9,-1] D) [-9,-1]

154. ## math

Solve using elimination method x+5y=21 -x+5y=19

155. ## nutrition

What factors that affect your food choices and explore what has affected those choices you eat on a daily basis.

156. ## Pre-Calculus

Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these

157. ## Math

What is the derivative of x - 4/x square. Just the denominator is squared.

158. ## criminal justice

who would be in charge of the merged departments by john t krimmel.

159. ## Math

Find the quadratic function that has the indicated vertex and whose graph passes through the given point. Vertex: (2,3) Point: (0,2) I do not know how to do this! Please explain!! Thank You

160. ## chemistry

What aldehyde and primary alcohol might be oxidized to yield 4-methylcyclohexanoic acid?

161. ## math

Mary has a solution that is 60% alcohol and another that is 20% alcohol. How much of each should she use to make 100 milliliters of a solution that is 52% alcohol?

162. ## Physics

I have an exam in oceanography coming up and I'm having a little trouble understanding directions. For example in my review sheet he asks question like this: In what compass direction does the coriolis force act in the following situations: An object

163. ## chemistry

what happens when you place sodium hydroxide and water into a calorimeter?

164. ## Nutrition

Why do sucrose-fed rats (high carb diet) consume less rat chow (protein, fat, fiber) than the control rats?

165. ## Hum 230

What are the similarities and differnce of ethnics and laws within an organization?

166. ## Math 30

One of the terms in the expansion of (x+3)^7 is kx^5. How do I determine the value of k.

167. ## math

7[3m-(m+6)] G.T. -6(M-1)

168. ## Math

What is the solution of the interval notion? x less than 6 and x greater than -3

169. ## psy

How do you think historical and scientific perspectives on homosexuality may have shaped the way gay individuals perceive themselves? Address at least three perspectives discussed in the text.

170. ## math

x+7 less than -4 or x+7 greater than 2 Solve the compound inequality

171. ## trig

which of the following radian measures would be a soultion to 2sin^2 2x-1=0 A)pi/4 B)pi/6 C)pi/8 D)pi/12

a 45kilo roller-blader accelerates from rest to 4.5ms-1 in 3.0seconds. calculate the force requied by the roller-blader, if there are opposing friction forces of 40N acting? include a lbelled vector diagram in your answer.

173. ## Computer Networking

Mobile Training is a small training firm that offers mobile classrooms that come to your company and teaches office software,such as Word, Excel, Quickbooks, etc. You're asked to design a network for use in a training environment. It should be mobile, easy

174. ## geography

how have farmers in the poor part of south italy been helped with their living conditions. ive looked but cant find anything. thankyou

175. ## Science Help

When all of the hydrogen of the Sun is used up, it will turn into a _________?

176. ## english: poem

what makes "God's World" a powerful poem? i don't know please help i think it's powerful because it's descibing how the world looks like. i really don't know. need help God's World O world, I cannot hold thee close enough! Thy winds, thy wide grey skies!

177. ## Science - Research

I am doing a review of the benefits and limitations to using genetic methods to research humans. I think the limitations will come from the fact that you need a blood sample. I'm not sure how to find about how much blood the scientist takes from the person

178. ## social studies

What would most likely happen if the Canadian government overruled the current laws protecting French language and heritage in the province of Quebec?

179. ## MATHS

I am less than 500. I am divisible by 11 and 5. I have three digits. The sum of my digits is 14

180. ## Tennessee State University

How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

181. ## HCA220

How does blood clotting, immune response, allergic and hormone release interelate?

182. ## chemistry

how many joules are formed when 3 moles oh CH4(g) react?

what are the three emphatic forms of helpig verbs

184. ## math

Cola Company is offering its preferred customers a 25% discount on its most popular product normally listed at \$40 each. a) What is the net price of each product to Cola Company's preferred customers? For full marks your answer(s) should be rounded to the

185. ## Geography

How many immigrants does Canada need annually to prevent a decrease in its population? Please provide the source of the answer.

186. ## math

What would be the right way to convert base 16 to base 10, such as for an example, 1BD base 16 to base 10?

187. ## Art

what did Harold Rosenberg mean by "spectator vs view"

188. ## Tennessee State University

How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

(x-7)(x+2)=0

190. ## Math word problem

Which would you rather be paid for 12 days - \$100 per day for the 12 days or one dollar for the first day, \$2.00 the second, \$4.00 the third, \$8.00 the fourth, etc., up to and including the 12th day?

191. ## college/Algabra

divide: (12x^3-42x^2-30x-3)/(6x+3)

192. ## Advice on IB subjects

Hey there all! Im desperate for some advice on my subjects at IB! I have decided on chem bio higher and english spanish standard. I am battling between Maths and Economics higher! I really like Maths and had decided to take it but now that I told people my

193. ## Math

0.3(11x+4) greater than 2.1-(x+8)

194. ## math

Solve for the unknown: 8/52 = m/39

i need help, can someone determine the quadrant in which the angles lie? pie/5 7pie/5 -pie/12 -2

196. ## math

how many ounces in a cup?

197. ## early childhood literacy

the belief that children learn to read the same way that they learned to talk is the basis for the:

199. ## math

I need help making to t-charts. a. 1 if -1/2 is less than or equal to x less than or equal to 1. b. x^3 if x>1

200. ## Math

determine the number of solutions using determinants 3x-y=-6 2x=3y+2 I get: 3 -1 2 -3 D = -9-(-2)=-7 and 3 -6 2 2 D = 6-(-12)=18 solution set is (-7,18) when I plug them in to check, they don't come out right

201. ## Tennessee State University

How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

202. ## algebra

How would u solve D\d+2 - 2\2-d = d+6\ d^2-4 I got to D(d-2)(2-d) -2 (d+2)(d-2)=2d-d^2+12-6d How would you solve? Im confused

203. ## Math

Subtract: Simplify if possible x/x^2-16 - 6/x^2+5x+4

204. ## English

I forgot to include the following sentences which are part of the same summary. I really hope you can find time to check them, too.Thank you a lot. 7) The boxes of food had not been damaged by the water. He found many things, including biscuits and rum,

205. ## drama

If Tim Burton were to remake the film Cinderella, what do you think it would look like? Describe characters, actors who would play the characters, costumes, set, mood and setting.

206. ## Math

Find f x g, g x f, and f x f f(x) = 3sqrt x-1 g(x) = x^3+1 For the f(x) the 3 is little above the sqrt sign. I do not understand how do find these.

207. ## math

solve (3v+4)/(v-2)

208. ## com 220

Where can I find a graph or table that shows when black people was able to vote and the years?

209. ## college

what dose harold rosenberg mean when talk about "spectator vs viewer".

210. ## math

A cell phone company offers a contract for which the cost C, in dollars, of T minutes of telephoning is given by C=0.25(t-600)+71.95, where it is assumed the t greater than 600 minutes. What times will keep costs between \$119.20 and \$135.45?

211. ## AP Biology

discuss the characteristics that make up mammalian genomes larger than prokaryotic genomes

212. ## Pre-Cal

Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these

213. ## math

0.3(11x+4) greater than 2.1 -(x+8)

214. ## Math

Solve. a+3 less than -12

215. ## art

In 1953 Robert Rauschenberg erased the drawing of a very famous abstract expressionist artist? and why?

216. ## english: poem

can someone tell me what emotion is this poem is expressing? i read this over but couldn't figure out what this poem is expressing. God's World O world, I cannot hold thee close enough! Thy winds, thy wide grey skies! Thy mists that roll and rise! Thy

217. ## science

what is muscular energy?

218. ## math 12

without looking at cases Jamie just puts the CDs into cases. The cases belong to the CDs. how many different ways can the CDs be put in the cases? Is the answer 3!=6

219. ## us history

Define ethnocentrism and explain how it has been used to justify European colonization of Native American cultures.

221. ## Changes in the world

What are atleast three or more changes in the world, that you'd like to see. One change that I would like to see is an end to child abuse, terrorism, and an end to animal abuse. I think that parents should be capable of leaning their children towards the

222. ## uniport

determine the area enclosed by the given boundaries: y=10-x^2and y=x^2+2.

223. ## algebra

when adding or subtracting rational exprssions, why do you need an LCD

224. ## Math

Find two functions f and g such that (f x g)(x) = h(x). h(x) = 4 / (5x+2)^2

225. ## Social Studies

What was Josef Stalin's scapegoat? Im assuming it is the Bolshevik's and he took care of them through mass purging.

226. ## Language Arts

Is obscured a verb, adjective, or both?

227. ## Math

set S is composed of the square of every element of the set {-5,5}. what is S?

Write interval notion for the set {x -1 G.T. X G.T. -9} multiple choose A)[-9,-1) B)(-9,-1) C) (-9,-1] D) [-9,-1]

-2x>1/9

230. ## maths

i need to factorise 4 cos squared theta + 2 cos theta - 1

231. ## sentences

write a few sentences adout another famous afro american woman because march famous woman"s month

232. ## scott

during the relative refactory peroid another impulse can be triggered by a ?