# Questions Asked onJune 14, 2015

1. ## Phenoix

teresa buys 100 shares of XYZ sock on margin at \$20 per share. If the margin requirement is 45 percent, the interest rate is 10 percent, and she holds the security for 1 year, how much interest must she pay?

2. ## calc

Find the velocity, v(t), for an object moving along the x-axis if the acceleration, a(t), is a(t) = cos(t) − sin(t) and v(0) = 3.

3. ## French, foreign languages

Hi the following sentences are basically unscrambling them in the first place and then putting the sentence in order. If when looking through my unscrambled sentences and you see something wrong with the grammar or something of that nature that does not

4. ## Statistics

A random sample of 100 cable TV movies contained an average of 3.38 acts of physical violence per program. At the 99% level what is your estimate of the population value? mean = 3.38 s = 0.30 N = 100

5. ## chemistry

what is the freezing point of a solution that contains 20.2g of urea CO(NH2)2 in 295mL water? Assume a density of water of 1.00g/mL

6. ## chemistry

how many grams of methanol must be added to 5.00kg of water to lower its freezing point to -12.0 degrees C? for each mole of solute the freezing point of 1kg of water is lowered 1.86 degrees C?

7. ## Chem

A mixture of 5.00 g of sodium carbonate, Na2CO3 and sodium hydrogen carbonate, NaHCO3 is heated. The loss in mass is 0.31 g. Sodium carbonate does not decompose on heating. Calculate the percentage by mass of sodium carbonate in the mixture.

8. ## chemistry

Aspirin is a monoprotic acid called acetylsalicylic acid. Its formula is HC9H7O4. A certain pain reliever was analyzed for aspirin by dissolving 0.311 g of it in water and titrating it with 0.0398 M KOH solution. The titration required 22.32 mL of base.

9. ## chemistry

A student prepares a solution of hydrochloric acid that is approximately 0.1 M and wanted to determine its precise concentration. A 25.00 mL portion of the HCl solution is transferred to a flask, and after a few drops of indicator are added, the HCl

10. ## Social Studies

This Canadian landform covers about half of the country. Need help? confused.

11. ## geometry

What is the surface area of a cylindrical ring if its outside diameter is 16 mm and its inside diameter is 10 mm? Round your answer to the nearest whole number. A. 92 mm^2 B. 118 mm^2 C. 123 mm^2 D. 385 mm^2 I thought it was C. 123 mm^2. However that is

12. ## mth 125

Janet Jones borrowed \$3,000 on 90-day 12 percent note. Janet paid \$250 toward the note on day 35. On day 80 she paid an additional \$400. Using the U.S. Rule, her adjusted balance after her first payment is

13. ## physics

A copper kettle contains water at 29.1 °C. When the water is heated to 86.6 °C, the volume of the kettle expands by 5.56 x 10-5 m3. Determine the volume of the kettle at 29.1 °C.

14. ## geometry

One advantage of the prismoidal formula is that you can use it to a) calculate precise volumes of all prismoids b)calculate both volume and surface area c)determine volumes of figures that are not prismoids d)estimate the volume of solids that are

15. ## Matsogella

Recent service delivery xenophobia in the community or in the neighbourhood

16. ## physics

A steel section of the Alaskan pipeline had a length of 58.5 m and a temperature of 18.0 °C when it was installed. What is its change in length when the temperature drops to a frigid -37.7 °C?

17. ## math

A pair of fair dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.) (a) the sum of the numbers shown uppermost is less than 6 (b) at least one 6 is cast

18. ## chemistry

A 12.6 mL sample of vinegar, containing acetic acid, was titrated using 0.542 M NaOH solution. The titration required 24.1 mL of the base. what is the molar concentration of acid in the vinegar?'

19. ## physics

Two bars of identical mass are at 29 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J/(kg · C°). When identical amounts of heat are supplied to each, the glass bar reaches a temperature of 92

20. ## physics

Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. However, if a significant amount of heat flows from the object to the thermometer, the temperature will change. A

21. ## physics

The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 29.0 °C the air gap between the rods is 1.93 x 10-3 m. At what temperature will the gap be closed?

22. ## Economics

A firm produces red and blue bobbleheads. It can sell red bobbleheads for \$20 - Q_r/2000 a piece And blue bobbleheads for \$17 - Q_b/2000 a piece Where Q_r = red bobbleheads per week Q_b = ble bobbleheads per week The total cost of producing Q = Q_r + Q_b

23. ## Chemistry

Magnesium metal reacts with hydrochlroic acid according to following reaction: Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2 (g) over interval of 10.00s, the mass of Mg changes by -0.22g. What is the corresponding rate of consumption of HCl (in Mol/s) ? So what i

24. ## Organic Chemistry

What is the hybridization of all the atoms (other than hydrogen) in each of the following species? a) NH3 e) +NH4 i) H3O+ b) BH3 f) +CH3 j)H2C=O c) -CH3 g) HCN d)*CH3 h) C(CH3)4 There are a couple I don't know how to do. Please help? Did I do the other

25. ## Introduction to computers

What is the purpose of using templates in PowerPoint? A) integrates animation and audio automatically B) inserts a consistent look and format to the entire presentation C) inserts the required formulas automatically into the presentation D) imports fonts

26. ## English

Synthesis/transformation question I agree with your comment entirely. ______ cannot _________ more _______________. Ans 1: I cannot agree more with your comment. Ans 2: I cannot agree more entirely with your comment. We can accept Ans 1. Is Ans 2

27. ## Math

My friend has \$80 to spend on a fence for her rectangular garden. She wants to use cedar fencing which costs \$8/foot on one side, and cheaper metal fencing which costs \$2/foot for the other three sides. What are the dimensions of the garden with the

28. ## Math

Byron’s house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is 30cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the

29. ## English

Q1: What is there in the classroom? Q2: What's there in the classroom? Q3: What is in the classroom? Q4: What are in the classroom? 1. There is an LCD TV in the classroom. 2. There are an English textbook and a pencil case on my desk. 3. There are a lot of

30. ## Science 207

Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell, Color, Etc.) Beaker Observations 1 2 3 4 5 6 7 8 POST LAB QUESTIONS 1. Develop hypotheses on the ability of oil, vinegar, and

31. ## physics

You have four point charges 2q, q, -q and -2q. If possible, describe how you would place at least the charge 2q (and perhaps other charges) and through which the net electric flux is a) 0 b) +3q/£0 c) -2q/£0

32. ## chemistry

148 mL of 0.325 M MgCl2 is mixed with 68.7 mL of 0.388 M NaOH and allowed to react completely. how many grams of Mg(OH)2 will form?

33. ## science chemistory

CaCO3 2HCl forms CO2 CaCl2 H2O 1.calculate the molar mass of calcium chloride produce 2.calculate the number of moles of calcium carbonate 3.calculate the mass of calcium carbonate

34. ## science chemistry

A basic amino acid,arginine,has a molar mass of 174g.mol^-1.it has the following percentage composition:41,38% carbon, 18,39% of oxygen,32,18% of nitrogen and 8,O5% of Hydrogen.determine the molecular formular of arginine

35. ## physics

A point charge 5 micro couloumb is at the centre of a cubical gaussian surface 100cm on edge. Calculate the electric flux through the surface.

36. ## Social Studies

Why did most major northeastern cities in the United States develop along the coast? Need help A.S.A.P

37. ## physics

A thick, vertical iron pipe has an inner diameter of 0.070 m. A thin aluminum (α = 23x10-6 (C°)-1) disk, heated to a temperature of 89°C, has a diameter that is 4.4x10-5 m greater than the pipe's inner diameter. The disk is laid on top of the open upper

38. ## S D S school Batote

An hour has 60 minutes .How many minutes are there in 5/6 of an hour

39. ## math trigonometry

Simplify the following expression to a single trigonometric term sin(360-x)*tan(-x)/cos(180 x)*(sin^2A cos^2A) answer= -sinx*-tanx/cosx*(1) after that how do i continue?

40. ## chemistry

"Stomach acid" is hydrochloric acid. A sample of gastric juice having a volume of 6.68 mL required 13.90 mL of 0.0161 M KOH solution for neutralization in a titration. What was the molar concentration of HCl in this fluid? C(HCl) = If we assume a density

41. ## FRENCH!

Please check my sentences for anything wrong to help me fix them. Thanks. 1.) Cette semaine je suis allé le camping. (This week, I went camping.) 2.) Je suis allé la peche. (I went fishing) 3.) J;ai attrapé un poisson de saumon. (I caught a salmon

42. ## briggs

A point charge 5 micro couloumb is at the centre of a cubical gaussian surface 100cm on edge. Calculate the electric flux through the surface.

43. ## math

Q1.Plot three points with first coordinate equal to (-2.8) and join them.

44. ## Social Studies

what was the cause of the velvet revolution?

45. ## math

Simplify the following expression to a single trigonometric term sin(360-x)*tan(-x)/cos(180 x)*(sin^2A cos^2A)

46. ## physical science chemistry

Fill in the missing words Ionisation energy, water, melting point, electronegativity, non-polar, solvent, pair, boiling points, polar A covalent bond is formed when a 1________ of electrons is shared between the bonding atoms.when the electrons are shared

47. ## science chemistry

A given mass of helium(gas)occupies a volume of 3,6m^3 at a pressure of 105 kPa.if the temperature remains constant,calculate volume of the gas if the pressure is decreased to 70 kPa.

48. ## briggs

You have four point charges 2q, q, -q and -2q. If possible, describe how you would place at least the charge 2q (and perhaps other charges) and through which the net electric flux is a) 0 b) +3q/£0 c) -2q/£0

49. ## physics

How much heat in joules must be added to 0.413 kg of aluminum to change it from a solid at 122 °C to a liquid at 660 °C (its melting point)? The latent heat of fusion for aluminum is 4.0 x 105 J/kg.

50. ## physics

An ice chest at a beach party contains 12 cans of soda at 4.56 °C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 6.54-kg watermelon at 28.5 °C to the chest. The specific heat capacity of watermelon

51. ## College of education ekiadolor Benin

The scores of an achievement test given to 100,000 students are normally distributed with mean 500 and standard deviation 100.what should the score of a student be to place him or her among the 10% of the students?

52. ## maths

Four equivalent fraction of 2/3

53. ## basic electronics

3 resistor in parallel have an equivalent resistance of 1000 ohms. If R2 is twice the value of R3 and trice the value of R1, what is the value of R1,R2 and R3? Please show me the sol'n. n_n

54. ## Trigonometry

Prove that: sin^2(20).sin^2(40).sin^2(80)=3/2

55. ## Physical sciences

Which liquid has the lowest boiling point and why?

56. ## math

how many times less is six in the tens place than six in the millions place in in the number 36432463

57. ## Math

How many four digit numbers use the digit 7 two or more times?

58. ## biochemistry

anyone by any chance know what it means for a protein to be "n-terminally truncated"? I know that the n-terminus is supposed to be like one end of the protein chain...

59. ## math

I am a 6 digit number between 600 000 and 700 000.My ones digit and tens digit have no values.One of my digits has a value of 600 000.My ten thousands digit is one more than my thousands digit but if both digits are multiplied,the product is the same as

60. ## MATHS

In a triangle ABC, angle B> angle C. If AM is the bisector of angle A and An is perpendicular to BC. Prove that angle MAN=1/2(angle B-angle C).

61. ## ZANDLAZETHU

what are the costs and consequences of providing the subsidies and welfare

62. ## chemistry

how much faster does krypton diffuse than bromine under the same conditions of temperature and pressure?

63. ## J.C Motumi

Are there any current subsidy or walfare issues that are being discussed or addressed in parlement or in municipalities

64. ## Calculus

for a normal curve what percentage of values falls beyond two standard deviations from the mean

65. ## math117A

An object 4.2 feet tall casts a shadow that is 12.6 feet long. How long in feet would the shadow be for an object which is 20.4 feet tall? A.12 feet B. 6.8 feet C.28.8 feet D.61.2 feet

A stone is dropped from the top of a tall building and at the same time another stone is thrown vertically upward from the ground level with a velocity of 20m/s the stones meet exectity 2s after their release how tall is the building

67. ## FRENCH!

Can someone check if my sentences for my story are written correctly.. (punctuation, word placings. everything..) 1. Cette semaine, j'ai regarde deux films. (This week, I watched two films.) 2.) L'un des films s'appelle Insurgent. (One of the film is

68. ## Algebra

Write the following as an inequality. 6 is greater than y, and 1 is less than why. Use y only once in your inequality.

2|3x-5|-8=8

70. ## briggs

Compute the electric field about a uniformly charged plane sheet using gauss law.

71. ## physics

Compute the electric field about a uniformly charged plane sheet using gauss law.

72. ## electronic

find the intrinsic concentration, ni for silicon at 300k.given that Eg =1.12V Ao=5.85×10^5 q=1.6×10^-19C K=1.38×10^23J/K. using ni= Ao T^3/2 exp(-q/KT . Eg/2).

73. ## Government

Can what happened with Hurricane Katrina be prevented from happening again or is it an inherent consequence of shared power?

74. ## physics

A cart with a mass is of 6 kg rolls across a level surface. The wheels on the cart make the effects of friction negligible. A force of 3.0 N is applied to the cart, describe the carts motion.

75. ## Science

When you change the dna code to mRNA, will A become U or T?

76. ## French, foreign languages

I need help understanding the present subjunctive in French and also the usage of Il faut in said sentence

77. ## French, foreign languages

Hi, This are my answers using verbs from a list provided in the assignment in the future. If something within the sentences or if I have used a verb wrong please let me know and if possible tell me a correction I can make to make it more understandable or

78. ## math

using Rolles theorem to see if it can be applied to f. If so, find all numbers c such that f`(c)=0 f(x)=sin(x)+cos(x) interval [0,2pi]

79. ## pre-calculus 11

I am asked to solve the absolute value equation of |1/2x +1| =x+1 graphically. I can solve this algebraically and consider two cases for the absolute value one being positive and the other negative. I know this will be a straight line and when I solved it

80. ## pre-calculus 11

I have the question y=-|x^2 -9| I am asked for the piecewise function. I have written y={-x^2 +9 if x less than equal to -3} { x^2 -9 if x is greater than equal to 3} I am wondering if I have my are signs backwards.My reasons for choosing the signs I have