# Questions Asked onApril 6, 2011

1. ## physics

You have an inclined plane. It is 2m long and 1m high. A cylinder of mass 300 grams and 3cm radius is initially at rest at the top of the hill. What is its angular velocity when it reaches the bottom of the hill?

2. ## MicroEconomic

Strictly speaking, perfect competition has never existed and probably never will. Then why study it?

3. ## Calculus (urgent!!)

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

4. ## chemistry

In calibrating a thermometer by setting only the freezing and boiling points, what assumptions are you making regarding the internal diameter of the thermometer and the expansion of alcohol?

5. ## chemistry

In calibrating a thermometer by setting only the freezing and boiling points, what assumptions are you making regarding the internal diameter of the thermometer and the expansion of alcohol?

6. ## business communication

Today many employers expect interviewees to do more than just answer standard questions including all of the following except .defer to the hiring company to take control of the interview process B.provide samples of work they woukd likey do in the job.

7. ## home economics

Why do some workers make more money than others

8. ## science

A 250 kg object is acceelerating at 2.8 m/s2. What force was required to achieve this?

9. ## chemistry

In the reaction N2 + 3H2 -> 2NH3, how many grams of NH3 gas would be formed when H2 gas, having a volume of 11.2 liters at STP, reacts with excess N2 gas? Completly confused, thank you very much for your help :)

10. ## Chemistry

A 2.52 mg sample of the compound didemnin â€“ C was analyzed and found to have the following compositions: 1.55 mg C, 0.204 mg H, 0.209 mg N, and 0.557 mg O. The mass spectrum of didemnin â€“ C was found to have a parent mass peak of 1014 g/mol

11. ## Chemistry

In a decomposition reaction 2KCLO3 -> 2KCL + 3O2, what volume of O2 gas at STP would be produced from 3.66g of KCLO3 Thank You very much for your help :)

12. ## Chemistry

HELP!!! An unknown metal having a mass of 14.00g is dropped into 11.00mL of water at 20.0 degrees Celcius. The starting temperature of the chunk of metal is 100.0C. The final temperature of the water and metal is 32.5C. What is the specific heat of the

13. ## Information Technology Principles

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?

14. ## European History

Hi I just wanted to know if there is any evidence that Stalin used the fear/hatred of Kulaks to eradicate other political and social opponants... Thanks ps. If you could include any sources to support this it would REALLY help

15. ## Maths

Find the particular solution of the differential equation from: dy/dx = 2/27(x-3)ã(x^2-6x+23) / (y) (y>0. For which y=2 when x =1, and then give this particular solution in explicit form. regards Claire

16. ## Chemistry

Calculate the mass of H2O produced by the decomposition of 2.21g of CuCO3 x Cu (OH)2. What happend to this water? This question is incredibly important and I am stuck on it, thank you very much for your help

17. ## Math

Jane's garden is in the shape of a right triangle. One leg of the right triangle is longer than the other leg. The area of the garden is 63 square meters. What is the length of the longer leg?

18. ## chem

determine the wavelength of the line in the emission spectrum produced by an electron transition He+ from ni= 4 to nf= 2.

19. ## Math 8th Grade

Jane's garden is in the shape of a right triangle. One leg of the right triangle is longer than the other leg. The area of the garden is 63 square meters. What is the length of the longer leg?

20. ## Physics

A concave mirror has a focal length of 20 cm. What is the magnification of an object placed 128 cm in front of this mirror?

21. ## Physics 2

A converging lens with a focal length of 19 cm is used to form an image on a screen that is 3.3 m to the right the lens. Where must the object be placed? ____m to the left of the lens?

22. ## calculus

A rumor spreads through a population in such a way that "t" hours after the rumor starts, the percent of people involved in passing it on is given by P(t)=100[e^(-t)-e^(-4t)]. What is the highest percent of people involved in spreading the rumor within the

150. ## physics

A 110-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 420 N. For the first 13 m the floor is frictionless, and for the next 13 m the coefficient of friction is 0.35. What is the final speed of the crate?

151. ## English

Can you please check the following sentences, please. It's really urgent. 1) Following what Joyce had already done in England and Proust in France, and what, in some way, Sterne had attempted as early as two centuries before, Virginia Woolf therefore

217. ## biology

What is the typical ratio for a dihybrid cross between two parents that are double heterozygotes?

218. ## physics

alpha particles are accelerated through a potential of 1000volts and then enter a magnetic field 0.2T perpendicular to the their direction of motion.Calculate the radius of the circular path that they traverse.An alpha particle has a mass 6.68x 10^-27kg

219. ## math- algebra- help please!

3 dice are rolled let (y,r,b) represent each outcome? a- sample space b- prob rolling a sum of 18 c- prob of rolling a sum less than 5

220. ## spanish

Rewrite each statement two ways using object pronouns. Tengo que leer los libros en una semana.

221. ## english

Are the pronoun refrences clearly started in these sentences? 1. The governor t told the mayor that she would win by a landslide. 2. When the mayor thanked the governor, she was happy. 3. People who wish to vote must do so before 7:00 p.m., for after that

222. ## english

Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?

223. ## math

a single numbered standard cube is tossed. what is the probability of getting a number other than nine

224. ## Pre-Algreba

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards did Zachary have

Consider following situation.. You are going to buy this laptop at $1294.00 plus HST. You can also pay$50 a month for 30 months with down payment of $100. Compare following 3 scenarios using spreadsheets to calcuate how much you will pay. 1st Scenario: asked by Anonymous 226. ## chemistry I need help with the equilibrium constant, i understand it but I don't understand the last step when you have to change or find the exponent? asked by HS 227. ## physics A tank filled with water has marks every 10 cm on one wall. The refractive index is 1.33 for water in the tank. You observe the marks out in air, from the opposite wall and with your eye level with the top of the water. Which is the lowest or highest mark asked by crystal 228. ## math how would you solve this equation? 294 sin^2 theta = 196 sin 2 theta asked by alexa 229. ## English Rewrite the sentences with the pronoun refrences clearly stated.. 1. The governor told the mayor that she would win by a landslide. 2. when the mayor thanked the governor, she was happy. 3. people who wish to vote must do so before 7 pm, for after that you asked by Anthony 230. ## Chemistry Write the equation for the dissolution of (NH4)2S04 in water. How many moles of each type of ion, and how many total moles of ions does the dissolution of 0.5 mol of (NH4)2S04 produce? help pleaseeeeee ASAP asked by Kelly 231. ## Physics You are riding a bicycle at a speed of 15 m/s. The bycicle has tires with diameters measuring 630 mm. You can approximate each tire as a solid cyllinder (to calculate inertia) with a mass of 0.5 kg. What is the total rotational kinetic energy of the asked by Anonymous 232. ## project management Does anyone have the audit of the gauchito project plan asked by project management 233. ## Physics Which of the following events does not involve a change in angular momentum? 1. A spinning ice skater drawing in her arms to increase her rotational speed. 2. A child walking along the perimeter of a merry-go-round as it rotates. 3. A child walking towards asked by Anonymous 234. ## chemistry Write the overall ionic equation and the net ionic equation for the reaction between BaCl2 and Na2SO4 in aqueous solution, indentify the spectator ion and the precipitate ion for this reaction. help :( asked by Kelly 235. ## algebra t squared plus 10t plus 16 asked by ruth 236. ## science if you observe that the air pressure is decreasing, what type of weather will it bring? asked by jordonna 237. ## Calculus Please Help Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2. asked by Claudia 238. ## marketing please help me please can you help me for this question to get the right answer,,,, distinguish among a product modification a minoy innovation and a major innovation.present an example of each for a hotel asked by jessie 239. ## science Compare table salt with glucose. asked by unknown 240. ## Math Wendy answered 85% of the questions other history test correctly . There were 40 questions on the test and all the questionable had equal value. How many questions did Wendy not answer correctly on her test? asked by SunnyDee 241. ## science write a brief paragraph that tells how the words matter,element,atom,crystal,compound,and molecule relate. asked by unknown 242. ## Physics What is the magnitude of the force per meter of length on a straight wire carrying an 8.50 -A current when perpendicular to a 0.55 -T uniform magnetic field? asked by Samantha 243. ## topics of math A population is normally distributed with mean 43.7 and standard deviation 5.2. Find the following probability. (Round your answer to four decimal places.) p( x > 55.0 ) asked by Hannah 244. ## physics20 DYNAMICS: A 54kg fireman slides down a pole of a distance of 3m. if the man hits the groung at 4.4m/s than what will the force of friction acting on the man due to the pole? asked by Ty 245. ## physics In preparation for a demonstration on conservation of energy, a professor attaches a 7.2-kg bowling ball to a 3.4-m-long rope. He pulls the ball 23° away from the vertical and holds the ball while he discusses the physics principles involved. Assume that asked by Anonymous 246. ## Chemistry If you have 200 mL of a 0.50 M solution of KOH and you wish to dilute it to 0.30 M, how many mL of water should you add? asked by asdffffff 247. ## physics 20 DYNAMICS: a skier starts at the top of a 30m hill ta an anle of 20 degrees. the skier goes straight down the firctionless slope. How long will it take the skier to get to the bottom? asked by Ty 248. ## ap chemistry For propanoic acid (HC3H5O2, Ka = 1.3 10-5), determine the concentration of all species present, the pH, and the percent dissociation of a 0.29 M solution. [H+] [C3H5O2-] [OH -] [HC3H5O2] pH percent dissociation asked by Ryu 249. ## Physics 20 dynamics A curling stone has a mass of 20kg. a curler pushed the stone across the ice to launch it down the rink. a)if the curler starts to move the stone by pushing it with 15N, what is the stones initial acceleration? b)once moving, how much force is asked by bob 250. ## chem Calculate [H3O+] for each of the following solutions. a)pH = 8.59 i got 3.00e-9 but it said it was wrong. what am i doing wrong. im using the equation 10-ph = [H30+] asked by Beth 251. ## Accounting Alteran Corporation purchased a machine for 1.5 million in 2006. The machine is being depreciated over a 10-year life using the sum-of-the-years'-digits method. The residual value is expected to be$300,000. At the beginning of 2009, Alteran decided to

asked by Bobbi Loffredo
252. ## Physics 20

Dymamics unit A car standing still is struck by 2 other cars simultaneously. a beetle applies a force of 2350N [N60degreesE] and a truck applies a force of 4150N [SW]. What is the net force acting on the stationary car?

253. ## physics 20

DYNAMICS: A 54kg fireman slides down a pole of a distance of 3m. if the man hits the groung at 4.4m/s than what will the force of friction acting on the man due to the pole?

254. ## Writing

The propmt is Write a story about a time that I did something that caused me to feel pride in myself. What is this action and why did it make me feel pride in myself. I need help writing a story into this and you proofread and revise my grammaticly

255. ## chemistry

Consider the following reaction Al(OH)3 + 3HCL ____>ALCL3 How many milliltres of 0.8 M HCL will react with 2g of AL(OH)3 ??

284. ## Physics

The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97×1024 kg. The Earth's average radius is 6.38×106 m. What is the magnitude of the gravitational force that the Earth

285. ## Microbiology

What is the purpose of agar in media?

286. ## Microbiology

How would you determine whether a colony was a containminant on a streak plate?

287. ## Physics

The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Earth is 5.97×1024 kg. The Earth's average radius is 6.38×106 m. What is the magnitude of the gravitational force that the Earth

288. ## grammar

how can i rephrase this sentence WITHOUT using any personal pronouns --do you think the dough will rise the fastest in the sample with the highest, lowest, or a moderate concentration of sugar? thank you!

289. ## College Algebra

What is the difference between direct variation and joint variation and please put into words an example.

290. ## trig

If an equilateral triangle has a side of 10 ft what is its altitude to two significant digits

291. ## geometry

Consider the coordinates given and decide whether BC and DE are parallel, perpendicular, or neither B(3, -3), C(-3, -7), D(6, -5), E(0, 4) B(4, -7), C(1, 2), D(2, -8), E(-4, 10) B(-4, 0), C(2, 2), D(1, 4), E(2, 7)

292. ## Calculus (urgent!!)

Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.

293. ## Workplace Hazards and Safety

Describe and explain 5 rights and/or responsibilities of the worker with regards to safety in the workplace. This is the information I have: Worker's responsibilites: -Cooperate with the joint committee or worker health and safety representative,

294. ## geomery b

I need help understanding this so please help me?? 1. A table is 4 ft high. A small model of the table is 6 in. high. What is the ratio of the height of the model table to the height of the real table? 2 : 3 1 : 6 1 : 8 2 : 6 2. If a/b = 9/10, complete

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

Let f(x)=e^(2x)-kx, for k greater than 0. Using a calculator or computer, sketch the graph of f for k=1/9, 1/6,1/3,1/2,1,2,4. Describe what happens as k changes. f(x) has a local minimum. Find the location of the minimum. x= ____ Find the y-coordinate of

296. ## Math

how does (2) / √[(2+√(2))] become (2-√(2))√[(2+√(2))] steps too please

297. ## math

how to put weights in order from least to greatest

298. ## chemistry

The Ka for hydroflouric acid is 4.5 *10^-4 at 298K. Calculate the amount of sold NaF that is required toprepare a 250. mL acidic buffer with pH = 2.75. The inital molarity of hydroflouric acid is .250M but you have only 75mL. Part 2 Recalculate the pH of

299. ## Finance

what would happen if i had a credit card with $2000 dollars on it with an interest rate of 10%.the minimum payment is$50 a month how long would it take to pay off

300. ## English

Describe and explain 5 rights and/or responsibilities of the worker with regards to safety in the workplace. This is the information I have: Worker's responsibilites: -Cooperate with the joint committee or worker health and safety representative,

301. ## Physics 20

Dymamics unit A car standing still is struck by 2 other cars simultaneously. a beetle applies a force of 2350N [N60degreesE] and a truck applies a force of 4150N [SW]. What is the net force acting on the stationary car?

302. ## math

Consider the function f(x) whose second derivative is f''(x) = 5 x + 6 \sin (x). If f(0) = 4 and f'(0) = 2, what is f(x)?

303. ## accounting

a merchandising company wants to include the cost of operating its warehouse in the cost of inventory. The company’s controller argues that the cost of the warehouse is a reasonable and necessary cost of getting the inventory ready for sale and,

304. ## math

The density of a crystal is 2.65 grams per cubic centimeter. Ryan has a rectangular prism made of quartz. It measures 10 cm by 10 cm by 6 cm. Find the weight of this crystal in kilograms.

305. ## chemistry

How many molecules water are produced from 33 g lithium hydroxide? and work the slove

306. ## English

Please check for comma errors. If I need to add any commas or take some out please show me where. Thank you!! You seem to be progressing nicely after your back surgery; however, I do want to remind you of the importance of the instructions that was give to

307. ## English-Help

Please check for commas errors. If I need to add or take out any commas, please show me where. Have you quit trying to train your dog? Don’t be discouraged. We have the answer to your problem. Professional obedience training can make an amazing different

308. ## Calculus (urgent!!)

Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.

If 1100 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box. I'm supposed to type the answer in cubic centimeters... my answer was 2500 cm^3 but it's wrong... I have also

310. ## ENGLISH

Please check for commas errors and capilization. If I need to add or take out any commas, please show me where. Nashville, TN, November 9, 2011: Anisha Carter was named the new president of M& M Industries, and will take commands of the company on November

311. ## math

the density of a diamond is 3.52 grams per cubic centimeter. Sally has a diamond that has a volume of 20 mm^3. What is the weight of the diamond?.

312. ## chemistry

210 210 Pb --> Bi + ? 82 83 60 0 Co --> ? + e 27 -1 I need an explanation on how to find the missing product.

313. ## Enghlish-Now

Please read any if I need to add any commas or delete any, please let me kow where. Thank you!! Your presentation the Martin Managerial Conference in Chicago was excellent. While you were speaking, the audience was more attentive than they had been at any

335. ## algebra

Find f(x) and g(x) such that f(g(x))= square root of x over 6 square root of x+5 .

336. ## Chemistry

An empty flask weighs 128.632g. After vaporization of a sample of volatile liquid, at a measured temperature of 99.8 C. The flask is sealed, cooled to room temperature, and weighed. The mass is now 129.225g. The measured P atm is 757.7 torr. The flask is