# Questions Asked onSeptember 15, 2011

1. ## Science

Why it's so important to have one set of chemical symbols in the world ? Please no hard answers an easy one for me to understand. Thank You !!! :) PS: by the way this a qs. for my science homework I just don't understand. :) :) :)

2. ## physics

A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 12 m/s, skates by with the puck. After 2.0 s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 4.0

3. ## physics

An airport has runways only 142 m long. Asmall plane must reach a ground speed of 45 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its airport?Answer in units of m/s2.

12. ## Chemistry

How many milliliters of 5.2 M HCl must be transfered from a reagent bottle to provide 22 g HCl for a reaction? Answer in units of mL

13. ## chemistry

How do the boiling points of 3.0 m C6H12O6 and 3.0 m CaCl2 compare? A. The boiling point of 3.0 m C6H12O6 is higher. B. The boiling point of 3.0 m CaCl2 is higher. C. They are the same. D. The difference cannot be determined from the information given. I

14. ## science

A 6.90 kg penguin runs onto a huge sheet of frictionless Arctic ice. At t=0 it is at x=0 and y=0 with an initial velocity of 0.47 m/s along the positive x-axis. It slides while being pushed by the wind with a force of 0.49 N directed along the positive

15. ## geometry

graphic that depicts triangle ABC inscribed in sphere P.

16. ## physics

A baseball thrown at an angle of 65.0^\circ above the horizontal strikes a building 16.0 {\rm m} away at a point 5.00 {\rm m} above the point from which it is thrown. Ignore air resistance. a) find the magnitude of the initial velocity of the baseball. b)

17. ## SPANISH PLEAASSEE HELPP (im stuck)!!!!!!!!!!!!!!!!

The video characters are having Maite's birthday cake. Complete the conversation with the correct pronouns. DON FRANCISCO: Chicos, voy a hablar con la señora Perales, en un momento estoy con_____. JAVIER: Sí, don Efe, no se preocupe por ______ . INÉS:

18. ## Math 4th gr

How do I write this in standard form 3,000,000+200,000+40,000+600+70+7?

19. ## physics

A certain cable car is San Francisco can stop in 10 s when traveling at maximum speed. On one occasion, the driver sees a dog a distance d m in front of the car and slams on the brakes instantly. The car reaches the dog 7.78 s later, and the dog jumps off

20. ## geometry

How do I find the length of the hypotenuse of a right triangle with only one leg length and all angle measurements

21. ## physics

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 6.97 m/s. If the direction of his motion is at an angle of 34.1 below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

22. ## calculus

A bicyclist is riding on a path modeled by the function f(x) = 0.03x, where x and f(x) are measured in miles. Find the rate of change of elevation when x = 3.

23. ## physics

A ball is thrown upward. After reaching a maximum height, it continues falling back to- ward Earth. On the way down, the ball is caught at the same height at which it was thrown upward.If the time (up and down) the ball remains in the air is 2.3 s, find

24. ## Biology

Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion

25. ## chemistry

How many moles of O are needed to combine with 0.223 mole of C to form the following compounds? CO CO2

26. ## physics

A basketball leaves a player's hands at a height of 2.20 m above the floor. The basket is 2.80 m above the floor. The player likes to shoot the ball at a 36 degree angle. If the shot is made from a horizontal distance of 9.00 m and must be accurate to -.22

name each number in two different ways 2,700 6,300 1,800 91,000 Thanks

28. ## statistics

37% of all doctors are family practitioners. If four doctors are picked at random, what is the probability that all four are family practitioners? a.1.48 b.0.0187 c. 0.0168 d. .1369

29. ## Physics 1

From the top of a cliff overlooking a lake, a person throws two stones. The two stones have identical initial speeds of v0 = 13.4 m/s and are thrown at an angle θ = 31.8°, one below the horizontal and one above the horizontal. What is the distance

30. ## chemistry

calculate the freezing point of 0.1m of a)NaCl (b) glacial acetic acid

31. ## Algebra

Use an equation to solve the problem. John and two friends rent a canoe at a park. Each person must rent a life jacket. If the bill for the rental of the canoe and life jackets is 41, for how many hours did they rent the canoe?

32. ## math

write the word name for each number and tell the value of the underlined digit. 3,552,308,725 -

33. ## physics

A 23.1 kg block is dragged over a rough, horizontal surface by a constant force of 95.0 N acting at an angle of angle 29.3 ° above the horizontal. The block is displaced 5.50 m, and the coefficient of kinetic friction is 0.341. Find the magnitude of the

34. ## physics

A stone is thrown straight up from the ground with an initial speed of 30.5 m/s . At the same instant, a stone is dropped from a height of h meters above ground level. The two stones strike the ground simultaneously.Find the height h. gravity is 9.8 m/s2 .

35. ## Finite Math

Pivot the system about the element in row 2, column 1. [3 3| –2] [–9 –4| 1]

36. ## Geometry

CounterExamples and Inductive Reasoning and Conjectures? Make a Conjecture for Each Scenario. Show your Work - the sum of the first 100 positive even numbers, - the sum of an even and odd number. - the product of two odd numbers. FInd One CounterExample to

37. ## Math

make a conjecture for the following show work the sum of an even and odd number. - the product of two odd numbers.

38. ## scientific notation

simplify write in scientific notation (9x10^-3)^2

39. ## Chemistry

When you mix sodium bicarbonate and calcium chloride with bromothymol (and indicator that changes color when a chemical reaction occures) what does it create?

40. ## math

A box contains 300 colored paper clips. Tony pulled 25 paper clips out at random and found 6 pink, 4 white, 10 yellow, and 5 blue clips in the sample from the data. Tony predicts there are about 150 yellow paper clips in the entire box. Ia tony's

41. ## college chem

How many moles of O are needed to combine with 0.223 mole of C to form the following compounds? CO CO2

42. ## physics

If a flea can jump straight up to a height of 0.310 m, what is its initial speed as it leaves the ground? How long is it in the air?

I have an input 25 and output of 15 the next set is input of 30 output of 18 how do I figure out the rule

44. ## ECONOMICS

suppose that the short run costs for a paintbrush manufacturer are given by the expression: TC= 100+2Q+.01 Q2 A. WAT ARE THE FIXED COSTS OF THIS MANUFACTURE? B. WHAT ARE THE TOTAL COSTS , AVERAGE COST, AVERAGE VARIABLE COST AND MARGINAL COST AT 50 AND 100

45. ## physics

A jet plane lands with a speed of 87 m/s and can accelerate at a maximum rate of -5.30 m/s2 as it comes to rest. (a) From the instant the plane touches the runway, what is the minimum time needed before it can come to rest? What is the actual minimum

46. ## Geometry

A 30-foot cable is suspended between the tops of two 20-foot poles on level ground. The lowest point of the cable is 5 feet above the ground. What is the distance between the two poles?

2) Eight months ago, Louise agreed to pay Thelma $750 and$950 six and twelve months, respectively, from the date of the agreement. With each payment Louise agreed to pay interest at the rate of 9.5% pa. from the date of the agreement. Louise could not

48. ## PHYSICS

A ball is thrown upward. It leaves the hand with a velocity of 13.8 m/s, having been accelerated through a distance of 0.495 m. Compute the ball's upward acceleration, assuming it to be constant. Whats the upward acceleration?

49. ## educating young children PART1

which one of the following statements concerning discipline is true? (a)discipline is guidance (b)one of the purposes of dicipline is to help children develop inner controls for behavior (c)young children instinctively know when they're misbehaving (d)if

88. ## physical education

what is physical education

89. ## Math

Find the interest if $9,000 is invested at an annual simple interest rate of 8 % for 3 years. Use the formula I = P × R × T , where I is the interest earnings, P is the principal, R is the annual rate and T is the time, expressed in years. (a)$ 216,000

90. ## MATH

Triangle T has vertices A(-9, 10)B(1,0)and C(5,4). Points A, B, and P(also on th xy plane) form a triangle that is congruent to triangle T. Find all the possible coordinates for P.

91. ## Physics

Im having trouble understanding the concept of pressure. Help please! What is the pressure at the bottom of a tube of mercury that is 0.2 m deep? An elephant with a mass of 1000 kg stands on a circus platform that weighs 50 kg. The area of the bottom of

92. ## Chemistry

If 32.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.545 g precipitate, what is the molarity of lead(II) ion in the original solution?

93. ## Physics

A jogger accelerates from rest to 2.78 m/s in 2.79 s. A car accelerates from 21.8 to 37.5 m/s also in 2.79 s. (a) Find the magnitude of the acceleration of the jogger. (b) Determine the magnitude of the acceleration of the car. (c) How much further does

94. ## math

A ball is thrown upward. It leaves the hand with a velocity of 13.8 m/s, having been accelerated through a distance of 0.495 m. Compute the ball's upward acceleration, assuming it to be constant.

95. ## physics

You and your friend are sledding on two sides of a triangle-shaped hill. On your side, the hill slopes up at 30.0° from the horizontal; on your friend's side, it slopes down at the same angle. You do not want to climb up the hill, so you tell your friend

96. ## science

A large area of land is cleared to build a new school. how does this affect the area. A)it increases soil erosion B)it decreases soil erosion C)it increases groundwater D)it decreases surface runoff

97. ## chemistry

If 0.694 grams of pure KHP are needed to exactly neutralize 30.5 mL of a calcium hydroxide solution, what is the concentration (in molarity) of the base solution?

98. ## CIS

1.) Encrypt the hexadecimal message F9E8 using the Rail Fence cipher for binary numbers with 3 Rails. [Give answer in hexadecimal encrypted message] 2.) Decrypt the hexadecimal encrypted message CDEF created by the Rail Fence cipher for binary numbers with

99. ## science

The primary substance from which all other chemical compounds and substances are made is a____________. A) element B) compound C) mixture D) pure substance

101. ## Geography

True or False: Continentality does affect climate of a region.

sally's pencil is 15 hundredths of a meter long(0.15).Edward's pencil is 2 tenths a meter long(0.2).whose pencil is longer?

103. ## MATH

HASAN MADE A MODEL FOR 437 HUNDREDS, 3 TENS,AND 7.WHAT ARE TWO OTHER WAYS HE COULD SHOW 437 USING BASE-TEN BLOCKS?

104. ## calc

Sawtooth function: Draw the graph of f(x) = x - [x]. At which points is f discontinuous? Is it left- or right-continuous at those points?

105. ## Physics

Im having trouble understanding the concept of pressure. Help please! What is the pressure at the bottom of a tube of mercury that is 0.2 m deep? An elephant with a mass of 1000 kg stands on a circus platform that weighs 50 kg. The area of the bottom of

106. ## geometry

g is between f and h. fh=8x,fg=6x+7, and gh+28. find fh

107. ## earth

a student measures the velocity of a water in a stream as 2.5 meters pe second.the actual velocity of the water is 3.0 meters per second. what is the approximate percent deviation of the studen's measurement

108. ## Social Studies

I am an investor in the Virginia Company. What is a reason of why people should leave England and move to Jamestown. What are the two advantages of living in Virginia? Thank you.

109. ## Physics

A small source of light is located at a distance from a vertical wall. An opaque object with a height of moves toward the wall with constant velocity of magnitude . At time , the object is located at the source .

123. ## algebra

the plane flies 725 miles per hour. how many minutes will it take to fly 150 miles

124. ## English

1. I hope to succeed. 2. I hope that I will succeed. 3. I hope my success. 4. I hope for my success. 5. I hope for success. (Are they all the same and grammatical?)

146. ## physics movie question

Pls I need a site that shows all the 168 impossibilities in the 'Armageddon' movie.

147. ## math

write in scientific notation 35,000 and 982,000,000

148. ## AP chemistry

A flask weighs 76.83 g when filled with Br and 55.63 g when filled with water (d- 1.00 g/cm3) How much does the flask weigh empty?

149. ## Chemistry

What is the molarity of 782 mL of a solution that contains 0.056 mol of solute? Answer in units of M

150. ## REGIONS AND LANDFORMS

WHAT IS A REGION OR A LANDFORM HELP ME1!!

151. ## Biology

Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion

152. ## Native Americans

What were some of the major achievements in the U.S. during this time period? I know they founded the continents, but I do not know the specifications. Also, were there any major literary movements developed during this period period? Thank You

153. ## SCIENCE

When the following are placed in water, for which of them will the buoyant force be more than as its weight? A) an ice cube B) a piece of frozen glycerin C) a gold ring D) a piece of aluminum foil 2. Sometimes when I get in my swimming pool I take a

155. ## Math/Science(Short Question 10th grade))

[History Homework] Please answer 1. What are 2 pieces of technology essential today? 2. If you could give a prehistoric person one item from today what would it be? 3. Why is writing important for civilizations? 4. Why is theater/drama important to

156. ## Animal Physiology-Membrane Potential

Intracellular Extracellular Na+ 12 mM 160 mM Cl- 7 mM 110 mM K+ 140 mM 5 mM 1.How do you calculate the equilibrium potential for potassium, K+, under these conditions? 2. Assuming that Na+ is the only ion the plasma membrane of this cell is permeable to,

157. ## algebra

Mike drove 80 miles per hour. How long will it take Mona to drive 100 miles.

158. ## Math

If the product of two numbers is 65 and one of the numbers is 8 more than the other, what is the remaining number?

159. ## English

Can you please check these few sentences for me? Thank you very much. 1) Walter Pater, the theorist of the aesthetic movement, believed that art shouldn't have any didactic purpose. It should be devoted to the cult of beauty. 2) The task of the poet was

160. ## math

A store sold 64 sweatshirts one day. Of these, 12 were gray. The store manager plans to order 400 more sweatshirts. Based on the data, how many gary sweatshirts should the manager order?

161. ## Math

You have a 4inch by 6inch notecard and you intend to make a triangle out of the notecard by using one long side (call it AB) as the base of your triangle and by then placing the third vertex (point E) somewhere on the opposite side (call it CD). Where

162. ## social studies

how did rivres in southwest asia enrich the soil

163. ## Math: Different Forms of Linear Functions

y< x/2 -6 How do I make this into a table and then into ordered pairs?

164. ## Math

Melvin estimate 645 + 322 by adding 600 + 300. Is his estimate sum an over or under estimate please? Ty

165. ## English

Thank you very much. I left out the following definitions. 1)Lord Henry makes a panegyric of beauty, in which he defines beauty as higher than genius since it needs no explanation. 2) It is one of the great facts of the world, like sunlight or springtime.

166. ## Culture

Is cultural relativism the same as cultural relativist because when I google search cultural relativist nothing comes up but when I do it the other way there is alot of info.

167. ## english

The meanings of blow up,account for,call off,talk into and drag on.

What type of case was silkwood v. kerr-mcgree?

169. ## AP World History

I really need some help with 2 questions. These questions are based out of Chapter 1 in Traditions and Encounters but it is in really any textbook. At least 5 sentences long. 1. Give two examples of the human response to climate and geography. 2. Describe

170. ## Algebra

write a rule for the function of input(x) is 0,4,8,12 and output(y) is 5,7,9,11

171. ## math

In the beginning, there is 3000 fish in which for some causes every year 20% of d fish die and 1000 are added. So we need to use compound interest formula to find out the equation that we can just substitute d number of year and find out how many fish

172. ## Humanities

I need help with an introduction to my culture and arts class.

173. ## Spelling

Some of the sentences below are not complete. Rewrite the passage so that all have both a subject and an action. Turning the attic into another bedroom was a great idea. One problem, though. Like living on the equator. Al least when the sun is shining. I

asked by Math is My Life
174. ## math

A deck of cards has 12 picture cards in it. 4 kings (K). 4 queens (Q). 4 jacks (J). (Part 1) How many different K-Q-J combinations can be made if the suits of the cards don't have to math? (Part 2) Name the multiplication rule you used to find your answer.

175. ## social studies

Fill in the blanks.The scale on a map shows you how distances on the map ________________ to ______________

188. ## english

I have to create a bio-magazine for English. What template or free software can I use to create the magazine

189. ## statistics

If a card is drawn at random from a deck of 52, what is the probability that it is an ace or a heart?

190. ## P-Chem

I am a bit confused on working this problem: Given that the work function (ƒÖ) for a metal is 1.82 eV, calculate the threshold frequency for this metal.

191. ## American Government

The theory that nearly all interests are adequately presented through group activity is: (Points: 5) republicanism. constitutionalism. elitism. pluralism. Need help with this question. I think its D

find the geometric mean of these percent increases 8, 12, 14, 26, and 5

193. ## math

if a ticket cost $4 and$352 were collected how many tickets were brought

195. ## Math

If B and C are variable quantities, which of these is an equation involving B and C ? (a) 2 B + C (b) C − B (c) C + B (d) C = B + 5 (e) 10 + 2 B C I think its either B or C but im not for sure though because its asking which one of these is an equation

196. ## Materials

Give at least one example of an application of each branch: Motion -cellphone Properties of Materials Sound -Radios Light -Candle Electricity -Calculator Magnetism -VCR's Properties of atoms -Computers Nuclear physics -?

197. ## math

trying to find out the 7 numbers to a data set with The minimum 17 The range is 45 The median is 32 The mode is 41

198. ## math

explain what y-incerpet is in a simplier form?

199. ## chemistry

in emission spectrum which one has a highest frequency and highest energy is it blue red or violet? which one is the lowest?

213. ## Math

If C represents a variable, then which of these expressions has a coefficient of 3 ? a) C + 3 (b) 3 C + 1 (c) 2 C − 3 (d) 5 − 2 C (e) 3 − 2 C

4h=31-3 h=?

215. ## math

I am a number between 0.23 and 0.31. I have 3 digits. All of my numbers are the same. What number am I?

216. ## English

I noticed I misspelt a few words. I'm posting it to you again. 1) During the long reign of Queen Victoria artists reacted differently to the new world shaped by the Industrial Revolution. 2) In particular, some grew/were (?) dissatisfied with Victorian

217. ## physics

do you know where I can get a formula sheet for physics our book does not include a break down of them

218. ## Math

A set of dominoes has 28 dominos. There are 7 dominos called doubles with the same number of dots on each end. If Sara and Jake each take a rein picking domino at random and replacing it. What is the probability that they will both pick a double?

219. ## Math: Factoring

3(1+x)^ 1/3 -x(1-x)^ -2/3 -------------------------------- (1+x) sqrt 2/3 please help the line means divisionn of the underlined numbers and variables.

220. ## ochem

Predict a reasonable melting point of a mixture prepared by combining 25mg of biphenyl (mp=70-71C) with 75mg of acetyl salicylic acid (mp=138-140C). Answer should have temps in it.

221. ## Decision science

A wholesaler of stationery is deciding how many desk calendars to stock in inventory for the coming year. It is impossible for him to reorder, and leftover units are worthless. The following numbers indicate the possible demand levels: Demand in 000's 100

222. ## math

Show that the following function is continuous only at x=0 : f(x) = x for x rational -x for x irrational

223. ## Math

When I am rounded to the nearest 10, I am 80. The sum of the two digits is 15. What number am I?

224. ## SS

write a paragraph explaining which type of governement. You feel is the best why.

225. ## Social Studies

write a paragraph explaining which type of governement. You feel is the best why.

What was the verdict and judgment of the Silkwood v. Kerr-McGree case?

227. ## Biology

Calculate the exact probability that when parents who are both heterozygous for a recessive disease have three children, the oldest will be affected, the middle one unaffected, and the youngest affected.

228. ## SCIENCE

When the following are placed in water, for which of them will the buoyant force be more than as its weight? A) an ice cube B) a piece of frozen glycerin C) a gold ring D) a piece of aluminum foil 2. Sometimes when I get in my swimming pool I take a

229. ## educating young children PART1

a portfolio should? (a)consist of items that don't directly relate to the school curriculum\(b)be put together only during the last week of school in order to highlight the students best work (c)allow the educator to determine growth in the students

230. ## Math

-2 squared(-2-x)-x to the zero power(3-2)= -2(x+3)

231. ## Physics

If object A starts 5m to the right of the orgin and moves to the right at 5m/s. And Object B starts 2m to the right of the orgin and moves to the left at 3 m/s. how do you draw a distance vs time graph for that?

232. ## Math

How do you get the answer to the fraction problem 9 2/3-3 5/6?

233. ## stats help

find the number of road fatalies attributed to impaired drivivng in ontario for the years 1975, 1985, 1995. i couldn't find the answer for it, it was n't on google. if you can find asite that has this, that would be a big help. thank you soo much for your

263. ## Vocabulary/social studies

Whats the latin base in the woed aggrandize?

264. ## HELP!!!!!!!!!GEOMETRY!!!!

WHAT IS THE PERIMETER OF A SQUARE WHOSE VERTICLES ARE A(-4,-3), B(-5,1), C(-1,2), AND D(0,-2)?

265. ## science

What is acceleration?

266. ## math algebra 1

x + 3 > 7 and 3 + 7 > x x > 4 and 10 > x 4 < x < 10 Replace the dimensions of the above figure with 12 ft and 18 ft and write the inequality for x.

is it b?

268. ## math algebra

9p +2q-4(6p-2q) simplified

20 cents. but what if the next number is 1.5.Then how will i solve it.

270. ## Composition 101 - Argosy U -

I am thinking about doing a paper regarding religion/vs./spiritual I want to make a point about How To Be Approached when someone ask me "Why am I a ......, surely it doesn't take all that." (Might even be my title (smile). Can you help me - or am I on the

271. ## Uni Math

Simplify and state the domain: x'2 +1 . x'2 - 9 x'2 + 2x – 3 x'2 – 2x -3

272. ## Math

what is the work for 4m(-2n)+6mn?

273. ## Maths

Sketched are the graphs of f(x)+x squared +4x-12,calculate the lenght of rs if s is the turning point of the para bola

274. ## geometry

what is the surface area measurments of a room is the height is 10ft.3in, width is 12ft.6in and the length is 12ft. 3in

275. ## geometry

how do u solve this geometry question to solve hj=5x jk=7x kh=96?

276. ## social studies

i need to find out stuff about resources and people.can anyone give me a good website?

277. ## math

75 centimeters is how many inches

278. ## chemistry

what is 124.5 when rounding to the 3rd significant figure?

279. ## English

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours? Visit the Calvinism

but why is 2.0 bigger than 0.15?

1.50.but can you explain more detailed about the 0.2 thingy.

282. ## question?

can anyone help me with a physics question?

3(2x+5)=39

284. ## Math

WHAT IS THE PERIMETER OF A SQUARE WHOSE VERTICLES ARE A(-4,-3), B(-5,1), C(-1,2), AND D(0,-2)?

285. ## social studies

how has the physical characteristics of ny state affected the way people live?

286. ## chemistry

does elements with low energy have high frequency?