# Questions Asked onApril 5, 2011

1. ## Principles of Marketing

A marketing manager is considering opportunities to export her film’s current consumer product to several different countries. She is interested in getting secondary data that will help her narrow down choice to countries that offer the best potential.

2. ## chemistry

If you used 0.500 grams of Mg and an excess of HCL, how much hydrogen gas should be produced at STP

3. ## Managerial Accounting

Flexible budget planning Sam Yu, the president of Centech Computer Services, needs your help. He wonders about the potential effects on the firm's net income if he changes the service rate that the firm charges its customers. The following basic data

4. ## Principles of Marketing

Describe the situation that would lead to the use of the three different buying process for a particular product lightweight bumpers for a pickup truck

5. ## geometry

a right squarepyramid has a base length of 4cm and heeight of 10cm.how many times greater is the surface area of a right square pyramid with the same height if the base length is doubled?

6. ## Managerial Accounting

Determining and interpreting flexible budget variances Use the standard price and cost data supplied in problem 15-18. Assume that Holligan actually produced and sold 31,000 books. The actual sales price and costs incurred follow. Actual price and variable

7. ## maths

how many times greater is the surface area of a right square prism with dimensions 4cm by 4cm by 4cm than a right square pyramid with height cm and base side 4cm?

8. ## maths

a) Construct a right square pyramid with your choice of dimensions (maximum base of 5 by 5 units). base dimensions: Slant height: Calculate its surface area

9. ## Chemistry

Label the following reactions as combination, decomposition, displacement, precipitation, or acid-base reaction. Also whether each reaction is a redox or non redox reaction. SO2(g)+H2O(l)-> H2SO3(aq) NH3(aq)+HS(-)(aq)-> NH4(+)(aq)+S(2-) Na2O2(l)->

10. ## maths

b) if the surface area of the base is increased by times its original surface area,(with the same vertical height),calculate the new surface area of the pyramid.

11. ## math

a paraTROOPER JUMPS FROM A PLANE.HOW MANEY FEET WILL HE FALL BEFORE HE REACHES TERMINAL VOLICITY.AND WHAT SPEED WILL IT BE IF HE WEIGHS 175 LBS.

12. ## Lab Math

How to prepare a 0.8% agarose gel with TAE. It does not give the concentration of the TAE so I am not sure how to prepare this gel. Thanks

13. ## math

what does 4/5 of 25 mean?I don't get that

14. ## English

I am supposed to write whether these sentences are conceptual or practical; However, I have a feeling that some of them are wrong because they all started to run together. PLEASE HELP! Practical goal: You have a specific action in mind and try to convince

15. ## math

5+(3x3-3) / 2 =

16. ## Calculus

Find the global maximum and minimum values of f(t)=4t/(2+t^2) if its domain is all real numbers?

17. ## Managerial Accounting

what management position is responsible for each variance: Sales Materials Labor Overhead General, Selling & Administrative What causes these variances?

18. ## phi

11{2[3(11)35]}> Some politicians claim to support the environment in speeches they make around the country. However, to get to those speeches they ride in gas guzzling, pollution creating private planes. They therefore clearly don’t believe a word of

19. ## chemistry

how many atoms are in 0.320 moles of aluminum?

20. ## physics

A skater is gliding along the ice at 2.2 , when she undergoes an acceleration of magnitude 1.2 for 3.0 . At the end of that time she is moving at 5.8

21. ## Geometry

A science lab needs a right circular cylindrical container that holds 15 gallons of liquid & is 24in tall. A reference manual states that 231 cubic inches is equivalent to one gallon. What is the approximate radius, in inches, or the container?

22. ## writing

Bill's manager has asked him to send all staff members the directions for checking out the new projector. In 1–2 sentences, describe what Bill should do. please help me start off don't really get it

23. ## CHEMISTRY

The chemical and engineering properties of cement are very important in the construction industries. One of the four principle chemical compounds in Portland cement in tricalcium silicate, 3CaO.SiO2. Calculate its molecular/formula weight?

24. ## CHEMISTRY

The density of alcohol at 20 degrees celcius is 0.79g/ml. Calculate the weight of 1Litre of alcohol?

25. ## CHEMISTRY

the equilibrium composition of a reaction is 1.522mol CO, 1.566mol H2, 0.478mol CH4 and 0.478mol H2O and the volume of the reaction vessel is 10Litres. -What is the equation for the reaction? -Calculate the equilibrium constant for both the forward and

26. ## CHEMISTRY

What is buffer, and how does it affect the pH of a solution?

In Government Contracts is fair and reasonable pricing is more judgment-based or more market-based -why is that?

28. ## science

A ship sailed 15 km north, then 20km east followed by 10km south. Find its displacement from its starting point

29. ## physics

An object is acted by 3 coplanar forces:30 newton to the north, 20 in the direction S20degrees E and 25 newton in a direction W20degrees S.Find the resultant

30. ## statistics

For every 100 births in the U.S., the number of boys follows, approxiamately, a normal curve with a mean of 51 and standard deviation of 5 boys. If the next 100 births in your local hospital resulted in 36 boys (and thus 64 girls) would that be unusual?

31. ## physics

A motor boat due east at 10m/s on a current moving towards S 30 degree W @ 5.0m/s. Find the resultant value of the boat and the direction.

32. ## Physics

An air rifle is used to shoot 1.0 g particles at 100 m/s through a hole of diameter 2.0 mm. How far from the rifle must an observer be to see the beam spread by 1.0 cm because of the uncertainty principle? Compare this answer with the diameter of the

33. ## Physics

Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the

34. ## physics

a) If a photon and an electron each have the same energy of 20.0 eV, find the wavelength of each. b) If a photon and an electron each have the same wavelength of 250 nm, find the energy of each. c) You want to study an organic molecule that is about 250 nm

35. ## math

What is 3 yd 1 ft - 1 yd 2 ft?

36. ## physics

For a class demonstration, your physics instructor pours 1.16 kg of steam at 100.0°C over 4.69 kg of ice at 0.0°C and allows the system to reach equilibrium. He is then going to measure the temperature of the system. While the system reaches equilibrium,

37. ## Chemistry

A solution is prepared with 50.0 g of HNO3 and 130.0 g of H2O. It has a density of 1.21 g/mL. What is the mass/volume percent?

38. ## Chemistry

158.5 mL of a AgNO3 solution at 5.0M was combined with a 3.5M CaCl2 solution. 110.5g of AgCl was recovered. Given that the CaCl2 is the limiting reagent, how many milliliters of the 3.5M CaCl2 solution was used?

39. ## Representing Text

If a term paper consisted 42 pages, each containing 40 lines of 100 symbols each (counting each space as a symbol), was to be encoded using Unicode, how many bytes of storage space would be required?

40. ## chemistry

100 grams of a liquid completely fill a 200 ml bottle. What is the density of the liquid?

41. ## physics

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

42. ## English - Native speakers

Hello what is the difference between a chef and a cook? Another question: If we have a sentence: It is mary's and john's birthday today do we put apostrophe where I put it? Can we say: He said in he camera or he said to the camera? (On TV) Do we say he

43. ## Modern History

Hi! I need a good website which talks about how many people Stalin had executed and the mock trials... Thanks! Tasha

44. ## English - Native speakers

Another one! Why can't we say this stain remover is very efficient. Why do we say effective? What is the difference? What are facilities and what amenities? When do we use specimen and when sample?

45. ## physics

A car travels along the curved path with radius of curvature p= 30m such that its speed is increased by at = (0.5e^t) m/s^2, where t is in seconds. determine the magnitudes of its velocity and acceleration after the car has traveled s = 18m starting from

46. ## math

How could constructivism be used in an integrated approach to teaching science and math?

47. ## Biology

. A woman whose father was color blind (X-linked, recessive) and who has type A blood has accused a man who is himself color blind of fathering her child. The accused man has type B blood. For each of the following cases, indicate whether or not the man

48. ## Biology

In Siberian Huskies base fur color is represented by black & white fur BB, tan/yellow & white fur Bb, and white only fur bb. Siberians all posses two style of fur wire hair (W_) and smooth (ww). What would the genotype and phenotype frequencies be for a

49. ## Biology

The gene for fur color in rabbits is an incompletely dominant situation: BB rabbits are brown, Bb rabbits are grey, and bb rabbits are white. The gene for fur color distribution is however co-dominant. This gene, S, has two alleles, S1 and S2; S1S1 animals

50. ## Genetics

In cats the allele B produces black, whereas b produces yellow. Neither gene is dominant, and in the heterozygous state the phenotype is a combination of yellow and black spots called tortoise-shell. The alleles B and b are “X-Linked”. If a

51. ## chemistry

2. If you used 0.500 g of Mg and an excess of HCL, how much hydrogen gas should be produced at STP?

52. ## Nirvana Powerpoint Question

I've got to make a powerpoint for the band Nirvana, and I've got to make some interesting points in it. I've got a lot of pictures of Kurt. I chose this topic cause I love the band, but It's kind of hard to explain good details. Could someone help me?

53. ## statistics

One hundred employees working in the construction, manufacturing, and various other industries were selected for review of salary information and educational level. The salaries of the one hundred employees were reviewed to determine if the employees with

54. ## history

Wall paintings from Etruscan tombs depict a society that was seemingly A. sexually open. B. segregated with respect to gender. C. austere and sexually repressed. D. simple and didn't depict the human form.

55. ## math

An object's weight on the Moon is less than its weight on Earth. This is because the Moon exerts less gravitational force on an object than Earth does. The equation m = can be used to find an object¿s weight on the moon, where m is the object¿s weight on

56. ## chemistry

prepare M/20 solution of oxalic acid. Find out the molarity and strength in gram per litre of the given solution of potassium permanganate with the help of the prepared solution of oxalic acid

57. ## Physics-Help-I'm Stuck

If a balloon is made of Mylar(alumized plastic) instead of rubber, would it stick to a wall if you rubbed the balloon against a wool sweater? If a charged balloon is held a distance "d" above some paper bits they start to move. If the balloon is moved half

58. ## chemistry

given the following info for water molar heat of fusion 6.02kj/mol calculate the total quanity of heat evolved when 10.0g of steam is condensed,cooled,and frozen to ice at -50 degrees

59. ## ENG 225

I NEED HELP ON ENG 225 WEEK 5 DQ#1. Do you think that films,in general, influence society or does society influence what is presented in films?

60. ## algebra

i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y - 1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations by substitution. x^2 +

61. ## chemistry

what mass of copper II nitrate would be produced from the complete reaction of 45.6g of copper according to the chemical reaction : Cu + 2 AgNO3 (can't make it a small 3, sorry)----Cu(NO3) + 2 Ag

62. ## physics

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

63. ## Env.Microbiology

write down the '' balance sheet''(carbon,electron,ATP,etc)for the fallowing metabolic process: -use the most common alternatives. -Give the balanced overall reactions with correct stoichiometry -İndicate all key reactans and products. -calculate how many

64. ## Accounting III

What arguments can be advanced in favor of treating fixed manufacturing overhead costs as product costs? What arguments can be advanced in favor of treating fixed manufacturing overhead costs as period costs? Which arguments do you find to be the most

65. ## Discrete Math

Solve the recurrence relation a_n = -2a_n-1 + 15a_n-2, n ≥ 2, given a₀ = 1, a₁ = -1. x² + 2x - 15, the distinct roots 3 and -5, so a_n = C₁(3^n) + C₂(-5)^n. The initial condition gives a₀ = 1 = C₁ - C₂, a₁ = -1 = 3C₁ - 5C₂. We obtain

66. ## music

So, in G/B, B is the descending bass line under the G chord. The G chord I normally play is 300023. So, is the last string/note played whatever is closest to string 6 or whatever is closest to string 1? Is this an understood rule? I mean how do you decide

67. ## Chemistry(HELP)

Can you check this answer? 1. Heat of combustion is the heat released by the complete combustion of one mole of a substance. a.) True b.) False Answer: b.) False Is this right?

68. ## physics

find the total positive charge in 200gram of water

69. ## English

I recently wrote an essay in English class and when I got it bcak I noticed that some of the words have agr or agr. over them. For example, most of them are over the words: their and they. I know it sounds confusikng, but if anyone can help, please do so.

1. The amou

71. ## Chemistry; Check

1. The amount of heat absorbed in a chemical reaction is measured with a thermometer. a. true b. false answer: False

72. ## Biology

There are many differences between the two major cell types: prokaryotes and eukaryotes. However, the different structures and modes of organization perform basically the same functions. Briefly compare and contrast the different features or functions of

73. ## billing and coding

pick 3 firms to research. based on internet reseach on these companies write a 500-750 word reseach paper proposing at least three marketing opportunities that you would strongly suggest that each firm pursue

75. ## statistics

A sample of 70 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 24 years. The population variance is 18.

76. ## chemistry

how many moles of N2 (g) re present in 1.00 of N2 (g) at 100 c and 1 atm?

77. ## millmottr

write the related addition statement 8-3=5

78. ## Chemistry

How fast should a 58.1g tennis ball travel to have a de Broglie wavelength that is equal to that of a photon of green light (5.40 X 10^3 angstroms)?

79. ## calculus

The velocity in the table is increasing, . Find an upper estimate for the total distance traveled using (a) n=4 (b) n=2 Which of the two answers is more accurate? 0 3 6 9 12 32 36 39 42 46

80. ## history

culture of comsumption during the eisenhower administration

find the slope of the tangent line y= -5x^1/2 + X^3/2; X=25

82. ## Economics

1. You read the following information about the economy: Real GDP up three percent from a year ago. Unemployment rate of 6.1 percent. Consumer Price Index up six percent from a year ago. Index of Leading Indicators up for the last six months. Prime

83. ## general biology

why is yeast used in the experiment of respiration?

84. ## Chemistry

How do you calculate the volumes of the acid solutions (1.50M HCl, 1.50M HNO3, and 1.50 M H2SO4?

85. ## world history

Which is NOT a way in which the Canadian government attempted to cooperate with French separatists?

86. ## science

what is the main idea for Joule and give a detail to it and an example. Also for calorie, kilocalorie and caloric values.... I need help I don't know what is their main idea and detail and example..

87. ## statistics

The average score on a particular exam is determined to be 84.35 with a standard deviation of 7.4. Assume the scores are normally distributed. Applicants with exam scores in the lower 10% directed to special retraining. What is the minimum score required

88. ## physics

The steering wheel of a car has a radius of 0.18 m, while the steering wheel of a truck has a radius of 0.25 m. The same force is applied in the same direction to each. What is the ratio of the torque produced by this force in the truck to the torque

89. ## english

Please help me identify the adjectives and adverbs in this: My experiences with credit and credit card started at age 18. I had several credit cards by the time I was in my mid-twenties. I did not realize that I over extended myself until I lost my job. I

90. ## computer question

new computer viruses and other types of malware are released all the time. Identify a current virus or worm (most security companies, such as Symantec and McAfee, list the most recent security threats on their Web sites) and asnswer the following

91. ## Chemistry

In a hydrogen atom, from what energy level must an electron fall to the n=3 level to give a line at 1.28 um (micrometers) in the infrared region?

92. ## chemistry honors

Assuming standard pressure, at what temperature is there an equilibrium between water vapor and liquid water?

93. ## English

What is the structure and language of the poem Young by Anne Sexton?

174. ## chemistry

At what temperature (from your graph) do KNO3 and NaCL have same molar solubility?

175. ## english

Whats the opposite of seditious

176. ## geometry

what is the area of a circle with a circumference of 22 pi in.? expressed in pi in. squared? and what are the steps to arrive at the solution?

177. ## Environmental Science

I am writing a report on greenhouse gases. Most of it is very depressing about how greenhouse gas emissions have increased over the pats decade. I want to highlight, however, greenhouse gases, if any, which have decreased. Can you think of any?

178. ## economics

what are 3 criteria used to evaluate taxes?

179. ## math

The math team spent $10 for the cake mixes and$4 for the cupcake paperliners. They sold 78 cupcakes at .75 each. What operations wi the math team use to determine their profit after playing for the mixes and liners?

180. ## Chemistry

The following questions refer to the following system: 500 mL of 0.02 M Mn(NO3)2 are mixed with 1.0 L of 1.0 M Na2C2O4. The oxalate ion, C2O4, acts as a ligand to form a complex ion with the Mn+2 ion with a coordination number of two. Mn2+ + C2O42- goes to

181. ## physics

Calculate the frequency in hertz and cm-1, as well as the energy in joules and electron volts of an x-ray photon with a wavelength of 4.55 angstroms.

182. ## Math--Proportions

Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck

my daughter came home with input/output table don't understand how to do it Input Output 4 33 5 36 11 54 16 69

184. ## Math

can you figure out this problem? 10c+c(c-4)

185. ## math

there are 3 games on tv in the afternoon on saturday and 4 games on tv in the night on saturday. There are 5 different games on tv sunday afternoun. how many different combinations of games can sam watch

186. ## Statistics

For many years the top-selling luxury car in North America was the Cadillac. It reigned from 1950 to 1998. In 2000, Cadillac sales dropped to half of the sales in 1978. It appeared that it was only popular with older males. Younger males seeking luxury

187. ## math

solve this linear programming problem; A chain saw requires 4 hours of assembly and a wood chipper 6 hours. A maximum of 48 hours of assembly time is available. The profit is $150 on a chain saw and$220 on a chipper. How many of each should be assembled

188. ## Chemistry

1.62 g of CoCl2 x (xH20) were heated. After heating only .88g of CoCl2 remained. What was the formula of the original hydrate?

189. ## Trig

A 60 ft. antenna stands on top of a building, From a point on the ground, the angles of elevation to the top and bottom of the antenna measure 58 and 44 respectively. How tall is the building

190. ## english

need help with fill in the blanks-- Our fram will p________much p______ this season

191. ## Chemistry

Calculate mass of silver nitrate needed to prepare a solution of concentration 0.01 moles per liter.

209. ## Chemistry

In a standard hydrogen electrode, why does increasing the partial pressure of H2 gas reduce the standard potential (E) of the cell?

210. ## Science

Ms. Sue. I am studying latitude, elevation, nearby water, ocean currents, prevailing winds, topography and vegetation. Thank you so much

211. ## math

which fractions are larger, 5/6 or 10/12 6/12 or 4/6?

212. ## medical assisting

imformation should include____________,_____________, and ________, procedures

213. ## statistics

Start with x = 100 and add four x values to make a sample of five data such that: a. s = 0 b. 0 < s < 1 c. 5 < s < 10 d. 20 < s < 30

214. ## spelling

ho do you spell completly

215. ## chemistry

Is it possible to produce a form of sodium ferrate using these components? FeCl3 NaOH NaOCl

216. ## algebra

use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?

217. ## math

how would you solve.... 15x + 50 + x to the second power....

222. ## geometry

I have a quadrilateral which is a rhombus and E is at the intersection and DE =2x+4 and DB=6X. How do I solve for x and DB?

223. ## Biology 12

Triaglyceride with three F.A.chains of 20 carbon how to calculate the ATP production Plz show the steps thank you

224. ## Physics

Two point charges, the first with a charge of +3.25×10−6 C and the second with a charge of -4.63×10−6 C , are separated by 25.5 cm. Find the magnitude of the electrostatic force experienced by the positive charge. Is the magnitude of the force

225. ## Finance

Ngata Corp. issued 12-year bonds 2 years ago at a coupon rate of 8.4 percent. The bonds make semiannual payments. If these bonds currently sell for 105 percent of par value, what is the YTM?

226. ## Calculus (pleas help!!!)

Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if

227. ## Chemistry

you measure 5.3g of KOH and dissolve it in enough water to make 400 ml of solution. what is the molarity of this base? You want to neutralize this base with a 3.7M H2SO4. How much sulfuric acid is necessary to do this? x=5.3g/39+16+1 = 5.3/56=.095m

228. ## English

I seen the help you gave other people and was wondering if you could help me idenify 5 adjectives and adverbs in my paragraph. St. Louis is considered to be Cardinals Nation. The St. Louis Cardinals are a professional baseball team based in St. Louis,

229. ## Geography

this body of freshwater in mexico is also home to marine life. I am confused... Only lake Baikal in Russia comes up.

230. ## French

I am trying to say "When one person has a loss, another could perhaps benefit." This is what I have: Quand une personne a une perte, une autre peut-etre pourrait profiter a la perte. Was I supposed to have used conditional? And do you notice any errors?

231. ## English

Need to correct the verb if not correct and if correct just leave. Thanks for looking at this for me... 1. King Arthur LEARNED about the magic sword from Merlin the magician. ANSWER=correct 2. My older sister LEARNED me to read when I was in kindergarten.

232. ## math

i am greater than 15 and less than 40.if you double me, i become a number that ends in 0.1/5 of me is equal to 5.

233. ## accounting

your firm, which is on accrual basis has a 100,000 mon-fri weekly payroll, and friday is payday. if the year ends on a Tuesday, what adjusting journal entry will you record??

234. ## english

Hi, i have to write a research paper on a topic related to may major, education (birth through five), can someone give me a good topic to write about? I'm new to this major so I don't have any ideas on what the the major topics are in this field, please

235. ## physics

A game of darts involves throwing two darts at the board. Hitting a blue region with a dart scores 1 point; a red region, 2 points, a green region, 3 points, and the orange region, 5 points. Assume that no skill is involved. What is the probability, stated

what does 12/15 - 7/15 equal,in simplest form?

237. ## grammar

in classifying a sentences u underline the _______ parts once and the ________ parts twice? can someone please help my daughter

238. ## probability

A game of darts involves throwing two darts at the board. Hitting a blue region with a dart scores 1 point; a red region, 2 points, a green region, 3 points, and the orange region, 5 points. Assume that no skill is involved. What is the probability, stated

239. ## social studies

Compare & Contrast the pros and cons of textbook social studies learning?

240. ## psychology

to formulate a general definition of emotion it will be most accurate to say that a.)emotions are feelings that have both pysiological and congnitive elements. b.) an emotion is a specific reaction to a preceived change in a situation. c.) emotion is a

241. ## Geography

IN the US the river that forms the border between mexico and US is called the rio grande. What is it called in Mexico? Any idea?

242. ## French

I wrote "Bien que Rousseau etait apparemement..." And my teacher underlined bien que and drew an arrow to etait...what could he be referring to? And I wrote "Mais Rousseau pensait aussi que la nouvelle connaissance parce qu'il permettait..." My teacher

243. ## kbcc

A car is initially traveling at 5 m/s when its begins its ascent up a 30 degree incline.how far up does the car travel before coming to rest

244. ## chemistry

write the products of these combination reactions: K + O2 ---> Ca + S ---> F2 + Al --->

how can you put these numbers in order from least to greatest? 0.25;1/5;three-tenths

246. ## probability

An octahedral die has eight faces numbered 1 to 8, each of which comes up with equal likelihood (you can see a picture of one in Diagram 3 of the Test 1 Supplement). Two such dice are rolled, and the product of the numbers is noted. In lowest terms, what

247. ## Phar Science

The following data were obtained for solutions of carboxymethylcellulose flowing through a capillary viscometer. Concentration (g/L) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.8 Time (s) 64.2 68.4 72.7 77.1 81.5 86.1 91.0 100.5 The Mark-Houwink-Sakurada parameters for

248. ## psychology

which statement about anorexia nervosa is ture? a.) sufferers are usually males between the age of 12 and 40. b.) people with the disorder may well be attractive and successfull. c.) anorexics almst never starve to death, although they may die from other

249. ## Phar Science

A researcher in Urumqi drops a rhodium ball of diameter 4.20 mm through a dilute aqueous solution of a high molar mass natural gum contained within a glass tube which has four graduations marked 10 cm apart. It is 18 C in the laboratory and the ball takes

250. ## Phar Science

In a sedimentation experiment using a centrifuge rotating at 20,000 rpm at 25°C the position of the boundary between the settled phase and the supernatant for a protein was found to be at 6.153 cm at t = 300 s, 6.179 at 600 s, and 6.206 at 900 s. If D for

251. ## Calculus (pleas help!!!)

Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if

252. ## Phar Science

In a sedimentation experiment using a centrifuge rotating at 20,000 rpm at 25°C the position of the boundary between the settled phase and the supernatant for a protein was found to be at 6.153 cm at t = 300 s, 6.179 at 600 s, and 6.206 at 900 s. If D for

The angular speed of a large pulley wheel that has a radius of 15, is 50 revolutions/min. Find the angular speed and the rim speed of the smaller wheel that has a radius of 5. The rim speed is going to be the same. I got the angular speed but I can't

254. ## Chemistry

What volume does a mixture of 14.2 g of He and 21.6 g of H2 occupy at 28 degrees celcius and 0.985 atm?

255. ## english

Could you please help me locate the adjectives and adverbs in the below paragraph? St. Louis is most often considered to be Cardinals Nation. The greatest day in St. Louis is opening day of baseball. The St. Louis Cardinals are a professional baseball team

256. ## Math

what's the mode, median, and range for this numbers (23,15,65,23,43)

Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck

258. ## 3rd math

I need help placing in order from least to greatest. Is this right. I don't know which is the least. 27 cups = there is 8 oz in 1 cup (27x8 is 216 oz 2 gallons = there is 16 cups in a gallon (16x2) 9 quarts= there is 4 cups in 1 qt (9x4)

259. ## math

What is the probability that an individual will be in a state facility and whose legal satisfaction value is 5 or more?

260. ## physics

A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. When it is used to measure an unknown magnetic field, the Hall voltage is 0.360 µV.

261. ## Technology

Assume that a movie is two hours long, that the frame rate is 30 frames per second, and that the resolution per frame is 1080i (1920x1090 pixels per frame), and that each pixel is represented by three colors (Red, Green, Blue) where each color is described

262. ## statistics

10. A random sample of n=36 scores is selected from a normal distribution with a mean of u=60. After a treatment is administered to the individuals in the sample, the sample mean is found to be M=52.

263. ## Biology HELP

Triaglyceride with three F.A.chains of 20 carbon how to calculate the ATP production Plz show the steps thank you

264. ## algebra

Create an equation of a nonlinear function and provide two inputs

265. ## geography

how many centuries has gold been mined in mexico?

266. ## maths

5/6*(18/25-9)

267. ## physics

An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the

268. ## chem

What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate? (: Begin by writing a balanced equation for the reaction between aqueous sodium bicarbonate and aqueous hydrochloric acid.)

269. ## general

From a standard deck of 52 cards, all of the clubs and the jack of diamonds are removed. Two cards are drawn at random from the altered deck without replacement. What is the probability that both cards will be of the same suit? Justify your answer, which

270. ## graphs of sin

find an equation of the form y = c+a sin(bx) with the max of 2,min of -2, and period of 3. So far i've got 2sin___ . I don't know how to find the period.

271. ## Algebra 1

What is 1/9+1/y=4/y

272. ## Physics

1)How much work is done by a person lifting a 2 kg object from the bottom of a well at a constant speed of 2m/s for 5 s. Is the answer mgh=2*9.8*10m 2)A 2kg block slides on a rough horizontal surface. A force (magnitude = 4N) acting parallel to the surface

273. ## English

I don't really know where to begin with this paragraph. My instructions are to type and revise the following paragraphs so that they’re easy to read as a presentation. Use simple sentence structure. Use correct placement of old and new information. Human

274. ## English

1. You (passed, past) the boat launch a few miles back. 2. The bus drove (passed, past) the bus stop without stopping. 1. passed 2. past

275. ## Geometry

A bank teller has a total of 124 bills in fives and tens. The total value of the money is \$840. How many of each kind does he have?

276. ## English

1. I (past, passed) the library on my way to the grocery store. 1. past

277. ## math

If a polyhedron has one side that is a triangle what would be the other sides measurements?

278. ## math

at the fair, 3/4 of the students wanted to see the space shuttle exhibit,but only 2/9 of theses students wrote down the address to get more nformation. what fraction of the students got the address?

279. ## Pre Algebra

What is the function rule when the input is 0,1.2.3 and the output is 5,4,3,2?

280. ## Calculus (pleas help!!!)

Find the absolute maximum and absolute minimum values of the function f(x)=(x−2)(x−5)^3+11 on each of the indicated intervals. Enter -1000 for any absolute extrema that does not exist. (A) Interval = [1,4] Absolute maximum = Absolute minimum = (B)

281. ## math

at the animal show 3/4 liked the dogs best. 2/6 of them like the great dane the best.what fraction liked the great dane the best?

282. ## math

-8a^2+5ab-12a^2-6(2a^2-4ab-10n^2)

283. ## physics

Calculate the frequency in hertz, wavelength in nm, and the velocity in m/s of light inside a material with a refractive index of 1.39. In vacuum, the light has a wavelength of 514.5nm

284. ## Chemistry

A chemist wants to extract the gold from 15.0g of gold(II) chloride dihydrate, AuCl3 â€¢ 2H20, What mass of gold could be obtained from this sample?

285. ## Algebra

Is this simplified? 6a2 + 4a2b - 4ab - 3b *The 2's are exponents

286. ## physics

n object is dropped from rest from a height 5.8 × 106 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth? The acceleration of gravity is 9.81 m/s2 and the radius of the Earth is 6.37 × 106 m.

287. ## math

thanks so much ms sue!!!!!!!!!

288. ## Calculus (pleas help!!!)

Find the absolute maximum and absolute minimum values of the function f(x)=(x−2)(x−5)^3+11 on each of the indicated intervals. Enter -1000 for any absolute extrema that does not exist. (A) Interval = [1,4] Absolute maximum = Absolute minimum = (B)