# Questions Asked onMarch 13, 2012

1. ## Chemistry

Sorry...it came through funny. O3 + H-C=C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 -> CO2 + H2O All of the numbers above are supposed to be subscript but keep coming out the same size as the letters. So this is the equation that i am trying to balance. In my question

2. ## Physics

A particle travels 15 times around a 10-cm radius circle in 42 seconds. What is the average speed (in m/s) of the particle? = I think I use the v=(2pi*r)/T equation? Right?

3. ## chemistry

A learner,noticing that the colour of the gas mixture in the syringe is no longer changing,comment that all chemical reactions in the syringe must have stopped. Is hs assumption correct? Explain

4. ## Physics

If a force F=200N is applied to the 34 kg cart, determine the time for the 20-kg block A to move on the cart 1.5 m. The coefficients of static and kinetic friction between the block and the cart are staticfriction=0.3 and kineticfriction=0.25. Both the

5. ## Chemistry

What is the pH of a mixture formed by adding 51.0 ml of 2.5×10−2 M HCl to 140 ml of 1.5×10−2 M HI?

7. ## Geometry

A pet store has various sizes of guinea pig cages. The diagram of the top of the cage has a width of 4.8cm and length of 6cm. what are the possible dimensions of this cage? A) 28in by 24in B) 28in by 18in C) 30in by 24in or D) 30in by 18in

8. ## Geometry Ratios

At the half time show during a football game, a marching band is to form a rectangle 50yards by 16yards. The conductor wants to plan out the band members positions using a 14- by 8.5-in. sheet of paper. What scale should she use to fir both dimensions of

9. ## Chemistry

A 100.0 ml sample of .50 M HCl (aq) is titrated with a .10 M NaOH. What volume of the NaOH solution is required to reach the endpoint of the titration?

10. ## Maths

What is the inverse of the function y = 3x2 ?

11. ## Maths

What is the inverse of the function y = 3x2 ?

12. ## Maths B

A builder uses 120 m of metal rod to make a rectangular frame with two crossbars as shown. If the width of the frame is x m, write a function to represent the area of the frame.

13. ## Maths B

The running costs of a particular factory consist of two components – a constant charge per week for rent of premises and a variable cost for labour which depends on the number of staff working in the factory in that particular week. The total weekly

14. ## Maths B

(a) What is the inverse of the function y = 3x2 ? (b) On the same set of axes, without the use of a graphical calculator, graph the original function and its inverse. (c) Is the inverse of the function also a function? Explain your decision.

15. ## Physics

A baseball is thrown from the roof of a 22.3 m tall building with an initial velocity of 13.1 m/s and is directed 50.9 degrees above the horizontal. A)What is the speed of the ball just before it strikes the ground? B)What is the answer for part A) if the

16. ## Algebra2

How do I solve this rational exponent equation? (2x)^1/2 = x - 4 Thanks in advance ^^

17. ## Math(alg2)

solve the exponential equation 5(2)^2x - 4 = 13 thanks

18. ## math

I feel as though I am missing something here...Suppose a family wants to have 3 children. Find the probability that the family has at least 1 boy. Help?

19. ## math

I feel as though I am missing something here...Suppose a family wants to have 3 children. Find the probability that the family has at least 1 boy. Help?

20. ## Physics

A 2.95 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0330 m. The spring has force constant 900 N/m. The coefficient of kinetic friction between the floor and the block is 0.42 . The block and spring are

21. ## Math

Write a program in C to find a root of a given equation using Secant Method. Perform five iterations to obtain the smallest positive root of the equation f(x) = sin x + 2tanx. Verify your answer with the program written by you. Please post the solution....

22. ## english

In The Secret, the secret is found in a a conversation. b letter. c line of poetry. d newspaper column. I think a

23. ## Hamlet

In Act III of Hamlet what are some major motifs? I cant find any! :(

24. ## Mathematics

The value of a certain fraction becomes 1/5 if one is added to its numerator. If one is taken from its denominator, its value becomes 1/7. Find the fraction by setting up a pair of simultaneous equations and solving them

25. ## Help! Math

Write 5 equivalent fractions to 15/20.

26. ## math

The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in metres, L, through the equation T=2π√ L/9.8 State the domain and range of this

27. ## applied math

if the mean radius of the moon is 1.73x10^6m and its mass is 7.35x10^22kg.determin the average speed?

28. ## GROWTHandDECAY

Can someone give me a growth and decay word problem solve it and explain how you arrive at the final answer in a way I understand it. Thanks ahead of time.

29. ## life orientation

3 checks and balances that are in place in south Africa that control media

30. ## goechemistry-science

i ppted out iron(111) form a solution and weighed the ppt. then dissolved the ppt in a solution and run in an aas and get the concentration. how can i get the percentage concentration of fe3+ given that it is from fe(oh)3

193. ## Math

1.) Your velocity is given by v(t) = t^2 + 6 in m/sec, with t in seconds. Estimate the distance, S, traveled between t= 0 and t = 5. Use an overestimate with data every one second. The distance is approximately ___________ m. Please show work and explain.

194. ## Math

Determine the equation for the following: The line with x-intercept of 4 and y-intercept of 2

195. ## Living environment

acidic substance secreted by glands in the stomach wall is it pepsin enzyme that breaks down starch into maltose is it salivary amylase organ in which bile is stored is it gallbladder

196. ## science

What is the effect as the epiglottis covers the larynx?

198. ## TO MS.SUE

how is it cheating. im trying yo learn

199. ## math

nicks class has 30 students. 2/5 of his class sings in the school chorus. how many students sing in the chorus?

200. ## Static Fricition

An object of mass 2k is placed on the edge of the floor of a merry go round of radius 4 meters. The coefficient of static friction is 0.4 for the floor and the object. 1.How much work (in joules) is done on the object by the static frictional force to get

201. ## calculus

What are the critical attributes that obtain between a derivative and a differential?

202. ## Chemistry 1110

If 3 L of hydrogen and 1.5 L of oxygen at STP react to yield water how many moles of water are formed? What gas volume does the water have at a temperature of 100degrees C and 1 atm pressure?

203. ## Aig math (ms.sue)

A bucket can hold 6 liters of water.If it is 3/4 full,how many liters of water does it contain?

204. ## psychology

CAN ANYONE HELP ME ANSWER THIS QUESTION!? I'VE READ THE QUESTION OVER AND OVER BUT IT IS CONFUSING ME.... At first the subject had difficulty falling asleep in the sleep lab, but finally drifted into sleep and was not awakened when a student researcher

205. ## chemistry

should add 3tsp salt/1 cup olives. accidentally added 6 tsp. Each tsp weighs 5 grams and has 2300 mg sodium. how much sodium was added?

206. ## Math

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $500 balance, 20% rate,$50

a ladder which is 15ft leans against a wall. suppose that when the bottom of the ladder is x feet away from the wall,the bottom is being pushed towards the wall at a rate of 1/2x feet per second. how fast is the top of the ladder rising at the moment the

208. ## Introduction To Criminal Justice

What operational style of policing is considered to be most effective in modern policing? Why?

209. ## math

describe the interval you would use for a bar graph if the data ranges from 12 to 39 units

210. ## math

what is 10 7/8% converted into a decimal?

211. ## chemistry

an ammonia molecule, NH3 travels at about 658 m/s at room temperature. How fast would a molecule of hydrogen sulfide, H2S travel under the same conditions?

212. ## Math

How many lines of symmetry does a regular decagon have? 0 5 10 20 I believe the answer is 10. Thanks for the help :)

213. ## US History

Explain how the role of government changed during the Progressive Era, using specific historical examples;

214. ## algebra..

Write an aquation in standad form that satisfies the given conditions: Paralled to the x-axis and through ( 4, -1)

215. ## geometry

A rectangle has a length of 9inches and a height of 1.5 feet. What is the area of the rectangle in square inches?

216. ## math

In physics class, the girl to boy ratio is 3 to 4. If there are a total of 14 students, how many girls are there?

217. ## math

the quotient of two numbers is 8. the sum of the same numbers is 72. what are thr two numbers?

218. ## algebra

5x + 5 = .2x + 29. I know x is 5 but what are the steps to get there?

219. ## math

Two standard numbers cubes are thrown. Given that one of the cubes shows a two, what is the probability that the sum of the numbers that come up on the two cubes is four?

220. ## math

can you help me with my subtracting

221. ## physics

The mass of the tray itself is 0.182 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.08 kg plate of food and a 0.279 kg cup of coffee. Assume L1 = 0.0590 m, L2 = 0.138 m, L3 = 0.258 m, L4 = 0.381 m and L5 = 0.401 m.

222. ## math

Two representatives are chosen at random from a group of 100 students that has 50 girls and 50 boys. What is the probability that the representatives seledted are either both boys or both girls?

223. ## Economics

I have a few questions, for my test coming up. Which of the following is most necessary for specialization among producers to take place? Free trade Monetary policy Competition Scarcity Which of the following best states the purpose of an import quota? To

271. ## English - ms. sue

that last 2 questions. how does author of story talk about wallpaper? what symbolism it obtain? She discuss wallpaper by showing herself being trapped and isolated in room where no one understand her. She be describing her own life. I not get the symbolism

272. ## Cooking Class

Can you help me find a link on how to make zeppoles (ex; step 1 then step 2) Please.

273. ## math

If 14 pennies are 7% of a pile of pennies, how many are in the pile?

274. ## math

75 students are absent today. This is 10% of the students enrolled at the school. How many students are enrolled at the school?

275. ## math

75 students are absent today. This is 10% of the students enrolled at the school. How many students are enrolled at the school?

276. ## math

75 students are absent today. This is 10% of the students enrolled at the school. How many students are enrolled at the school?

277. ## Physics

Suppose that a 200g mass (0.20kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and have a spring constant of 240N/m. It was originally stretched a

278. ## science

in chapter six of contemporary enviromental issues, the past century has been referred to as the Age of oil. As we reach a possible peak in oil production, what alternative, are forming? Consider the role of OPEC, perhaps,in reorganizing and monitoring oil

279. ## Accounting

Much of accounting is directed at servicing the information needs of those users that are external to an organization. Identify at least three external users of accounting information and indicate two questions they might seek to answer through their use

280. ## science

could you help me with my outline paper on water cycle have tohave a outline

281. ## Math help quickly

Use the expressions for left and right sums and the table below. right-hand sum = summation (n above and i =1 on the bottom) f(ti) * change in t = f(t1) * change in t + f(t2) * change in t + .... + f (tn) * change in t left-hand sum = summation (n above

282. ## math

Anthony decided to run one mile every 5 days. John decided to run two miles every 6 days. If they both start on Saturday, April 14, when will they both run on the same day again?

283. ## science

as we reach a possible peak in oil production, what alternatives are forming?

284. ## History

What's the World War definition of Gold Star?? I know it has to do with the the men or women who served in the army who didn't make it right?? But i need an exact definition

285. ## physics

Suppose that a 200g mass (0.20kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and have a spring constant of 240N/m. It was originally stretched a

286. ## Chemistry

What is the CHANGE in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10-5.

287. ## math

If 15 marbles are 3/5 of the marbles in a bag. how many are in the bag?

288. ## Physics

Suppose that a 200g mass (0.20kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and have a spring constant of 240N/m. It was originally stretched a