# Questions Asked onSeptember 3, 2012

1. ## chemistry

ethanol is a common laboratory solvent and has a density of 0.789 g/ml what is the mass in grams of 139 mL of ethanol

2. ## math

Eliza Savage received a statement from her bank showing a checking account balance of $324.18 as of January 18. Her own checkbook shows a balance of$487.38 as of January 29. The bank returned all of the cancelled checks but three. The amounts of these

3. ## physics

Tammy leaves the oﬃce, drives 43 km due north, then turns onto a second highway and continues in a direction of 30◦ north of east for 80 km. What is her total displacement from the office? and At what angle is her displacement? (Consider east to be

4. ## HISTORY

10. Which of the following statements is true regarding the Korean War? A. Stalin approved the North Korean attack in advance. B. Stalin was outraged by the North Korean attack on South Korea. C. Both Stalin and Mao expected the American response to the

5. ## physics

A plane is flying horizontally at a height of 500 m and a constant speed of 429 km/h when an object is projected vertically downward at an initial speed of 35.0 m/s. If air resistance is neglected, the average vertical component of velocity between the

6. ## AP Chemistry

For the reaction 3 FeCl2 + 2 Na3PO4 → Fe3(PO4)2 + 6 NaCl , what is the maximum amount of Fe3(PO4)2 which could be formed from 11.26 g of FeCl2 and 13.34 g of Na3PO4?

7. ## AP Language & composition

What two pieces of information are necessary each time you cite a source in the text of your paper?

8. ## physics

Reckless Rick driving along the road at 90 km/hr bumps into Hapless Harry directly in fornt of him who is driving at 88 km/hr. What is the speed of the collision?

9. ## Math

What is the difference between the measured values of 1.05m and 1.050m? What factor of a measurement tool determines the sig figs of a measured value? The two values are different because of their sig figs, the first has 3 and the other has 4. I think that

10. ## college

A blue ball is thrown upward with an initial speed of 19.8 m/s, from a height of 0.5 meters above the ground. 2.4 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 7.9 m/s from a height of 22.5 meters above the

11. ## Science

Ten pounds of liquid water is at a temperature of 180 degrees F at standard atmospheric conditions. Determine the energy required to convert this to water vapor (steam) at a temperature of 212 degrees F.

12. ## ap geometry

m is the midpoint of segment jk. jm=x/8 and jk=3x/4 subtracted by 6. find mk

13. ## Chemistry

What is wrong with the names 2-ethyl-4 and 4-dimethylpentane?

14. ## Economics

3. Suppose a firm has a constant marginal cost of $10. The current price of the product is$25, and at that price, it is estimated that the price elasticity of demand is -3.0. a. Is the charging the optimal price for the product? Demonstrate how you know.

15. ## physics

A vehicle moves in a straight line with an acceleration of 5 km/h^2.By how much does the speed change each second?Answer in units of km/h

16. ## physics

can someone explain the answers to the question: Consider the following set of equations, where s, s0 and r have units of length, t has units of time, v has units of velocity, g and a have units of acceleration. Take k to be dimensionless.Identify if these

17. ## physics

A red ball is thrown down with an initial speed of 1.2 m/s from a height of 25.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 22.9 m/s, from a height of 0.8 meters above the

18. ## Physics

A truck tractor pulls two trailers, one behind the other, at a constant speed of 100 km/h. It takes 0.640 s for the big rig to completely pass onto a bridge 390 m long. For what duration of time is all or part of the truck-trailer combination on the

19. ## physics

tom the cat is chasing jerry the mouse across the table surface at 1.5 m high, jerry steps out of the way and tom slides off the table at 5m/s. Where will tom hit the floof and what are the velocity components just before impact

20. ## English

1.In MLA documentation, the citation goes ______ the quotation marks, but ______ the period. a)after; before b)before; after c)in between; before ~ d)in between; after 2.When a writer cites materials used from the Web, it is important to cite the ______ as

21. ## Physics

A car starts from rest and travels for 5.4 s with a uniform acceleration of +1.6 m/s 2 . The driver then applies the brakes, causing a uniform acceleration of -2.2 m/s 2 . The breaks are applied for 1.80 s. (a) How fast is the car going at the end of the

22. ## improving vocabulary skills fourth edition

The first is to her with a stream of personal question:

23. ## Physics

Review Conceptual Example 7 as background for this problem. Two charges are fixed in place with a separation d. One charge is positive and has twice (n = 2) the magnitude of the other charge, which is negative. The positive charge lies to the left of the

24. ## math

A wire 320 in. long is cut into two pieces. One piece is formed into a square and the other into a circle. If the two figures have the same area, what are the lengths of the two pieces of wire (to the nearest tenth of an inch)?

25. ## Physics

A man is 6 feet tall and wishes to have a "full length mirror" in his house, meaning a mirror that lets him see himself from top to bottom. He goes to the hardware store to get a piece of flat (plane) mirror that is just barely long enough to work. How

26. ## AP Chemistry

The reaction of 8.7 grams of ﬂuorine with excess chlorine produced 3.9 grams of ClF3. What percent yield of ClF3 was obtained? Answer in units of %

27. ## physics

A car is initially traveling due north at 24.0 m/s. A.) find the velocity of the car after 4.00 seconds if it's acceleration is 1.60 m/s2 due north. B.) find the velocity of the car after 4.00 seconds if it's acceleration is instead 1.95 m/s2 due south.

28. ## math

Two fishing boats depart a harbor at the same time, one traveling east, the other south. The eastbound boat travels at a speed 1 mi/h faster than the southbound boat. After nine hours the boats are x = 45 mi apart. Find the speed of the southbound boat.

40. ## Computers

The Romance World Cruise Line provides special gifts for passengers who are newlyweds, as well as for those who have been married more than 40 years. Design a pseudocode for a program that accepts a couple's last name, ship cabin number, and number of

41. ## algebra

it's asking to identify a pattern and find the next number in the pattern. 1.) 31,24,17,10 4 -3 -2 3 2.) 0,4,2,10,50 450 250 5 50 If someone could help would appreciate but would like an explanation on how you get it so I can learn. Thanks ahead.

42. ## statistics

3. In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78 12.45 One student’s Math score was 70 and the same

43. ## physics

Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 4.5 km/h due east. Runner B is initially 8.0 km east of the flagpole and is running with a constant velocity of 6.5 km/h due west -How much time does it take for the

44. ## Eng091

I am woorking on supporting details or is this topic sentence. I am answering these the way I think they are but will someone please double check for me, I just want to be sure I am understanding this right. Finally, he began throwing a tennis ball for his

45. ## statistics

The lifetime of a 2 volt non-rechargeable battery has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. What is the z- score for batteries with lifetimes of 520 hours

46. ## Physics

An open box with a square base (see figure) is to be constructed from 160 square inches of material. The height of the box is 3 inches. What are the dimensions of the box? (Hint: The surface area is S = x2 + 4xh.) 1 . in. (length) × 2 . in. (width) × 3 .

47. ## Math

A ship leaves port at 6 am travelling due east at 12mph. Another ship leaves port at 11 am travelling due north at 15 mph. How far apart, to the nearest tenth of a mile are the 2 ships at 11 pm?

48. ## math

Wendy took a trip from city A to city B, a distance of 560 mi. She traveled part of the way by bus, which arrived at the train station just in time for Wendy to complete her journey by train. The bus averaged 40 mi/h, and the train averaged 110 mi/h. The

49. ## Physics

A rock thrown straight up with a velocity of 29 m/s from the edge of a building just misses the building as it comes down. The rock is moving at 44 m/s when it strikes the ground. How tall was the building? The acceleration of gravity is 9.8 m/s Answer in

50. ## Math

Quadrilateral ABCD has vertices at A(6,3), B(3,9), C(6,6) and D(12,3).It is reflected across the y axis. What are the new coordinates. Explain

51. ## Science

My question is which of the following are NOT examples of data? Numbers Graphs Measurements Conclusions I know conclusions are not data. What about graphs? Is that data or a way to record data?

52. ## physics

a steel beam is 12.0 m long when installed at 23 degrees celsius.Find the change in the beam's length if the temperature changes from -32.0 degrees celcius to 55 degrees celcius?

53. ## vocab

What is a compound sentence for abnegation?

54. ## physics

A certain car is capable of accelerating at a rate of 0.57 m/s^2.How long does it take for this car to go from a speed of 56 mi/h to a speed of 66 mi/h? 1mi/h = 0.447 m/s.Answer in units of s

55. ## Physics

A sailboat starts from rest and accelerates at a rate of 0.12 m/s 2 over a distance of 280 m. (a) Find the magnitude of the boat's final velocity. m/s (b) Find the time it takes the boat to travel this distance.

88. ## statistics

The most common intelligence quotient (IQ) scale is normally distributed with mean 100 and standard deviation 15. What score would put a child 3 standard deviations above the mean

What's the quickest amount of time that all four kids can get across a bridge with on kid always going back to get the other. 1 kid took 5 minutes 1 kid took 10 minutes 1 kid took 20 minutes 1 kid took 25 minutes

90. ## statistics

1. The table below presents data for a sample of people who completed a religious survey. Age Gender Denomination Church Attendance 56 1 7 4 46 2 6 5 49 2 6 5 49 1 1 5 27 2 9 5 51 1 4 2 47 2 2 3 67 1 5 4 49 2 2 6 33 1 12 6 55 2 9 5 40 1 7 5 62 1 8 6 47 2 6

91. ## math

a cordof wood stacked as a rectangular solid measures 4"x4"x8". How many cubic feet are in 3/4 this fo a cord?

92. ## physics

What is its speed after 1.87 s if it accelerates uniformly at −4.31 m/s^2? Answer in units of m/s

93. ## math

two coins are tossed list all the possible outcomes what is the probability that both of the coins land heads-up?

94. ## ENGLISH

The following sentence is in what tense? Laura has given donations to the local food bank. A. Past perfect B. Present perfect C. Present D. Past I THINK ITS A. RIGHT?

95. ## Physics

A crate has a mass of 27 kg. What applied force is required to produce an acceleration of 3 m/s2 if the frictional force is known to be 98 N? I am confused on how to solve this.

96. ## HISTORY

Which of the following is true of President G. W. Bush? A. He accepted the United States' role in the International Criminal Court. B. He reluctantly endorsed the Kyoto Protocol. C. He vowed to punish all countries sponsoring terrorism. D. He rejected

97. ## Physics

Use the position equation given below, where s represents the height of the object (in feet), v0 represents the initial velocity of the object (in feet per second), s0 represents the initial height of the object (in feet), and t represents the time (in

98. ## religion

Which of the following is NOT accurate? A. Hindus recognize the authority of the Vedas, whereas Jains do not. B. For Hindus the ultimate goal is to achieve moksha; for Jains the ultimate goal is to try to respect all life forms. C. Hindus believe in a

99. ## physics

What is the average acceleration a between 14 s and 16 s?

100. ## College Math

How do you solve a quadratic equation using the indian method?

101. ## world studies

1. How did European exploration held lead the way to the Scientific Revolution? --I was thinking that with the more discoveries they were making, they wanted explanations as to how things are that way 2. How was the Scientific Revolution related to the

102. ## calculus

I need help with the following problem: From a point 50 meters from the bottom of a radio tower along level ground, the angle of elevation to the top of the tower is 67 degrees. What is the height of the tower?

103. ## chemistry

How many oxygen atoms are present in 83.3 mg of salicylic acid?

104. ## algebra

to which set of numbers does the number belong 1.) 5/4 irrational integers rational natural 2.)graph the number on a number line 2/5 I don't know how to do these ones if someone could help and explain

105. ## healthcare

Write a memo to the staff of all 3 of Kyosha Valley’s locations and include the following information: 1.Explain the uniform policy. 2.Explain the expectations of staff with regard to teamwork in keeping the office and bathrooms clean during the day and

106. ## algebra

find the equation for the circle with the center (5, -4) and passing through (2,4)

107. ## ENGLISH

In which sentence is race used as a noun? A. Tom will race with four other boys. B. Tom won the race. C. If you race across town, you'll be on time. D. Don't race the motor when you're starting the car ITS C RIGHT?

108. ## ANT101

Yanomami kinship vs American kinship? is there trully any difference, we look out for whats best for ourselves and our family?

109. ## statistics

For a population with a mean of 250 and a standard deviation of 47, return each of the following z scores to raw scores on this variable. a. 0.54 b. -2.66 c. -1.0 d. 1.79

110. ## physics

Consider the expression 2π times square root of ℓ/g, where ℓ is length and g is gravitational acceleration in units of length divided by time squared.Evaluate its units.

111. ## physics

A 26 N force and a 42 N force act concurrently at point P. The larger force is directed north and the other acts toward the east. Calculate the resultant force acting on point P.

112. ## statistics

The most common intelligence quotient (IQ) scale is normally distributed with mean 100 and standard deviation 15. What score would put a child 3 standard deviations above the mean

120. ## accounting

The following information is related to the Lilliput Veterinary Clinic for April 2010, the firm's first month of operation: Compute the cost of services rendered.

121. ## Stats

Can someone please explain how to find the frequency from: Lower limit:230,240,250 upper limit:239,249,259 Mid Value:234.5,244.5,254.5

122. ## physics

A boat heads directly west across a river at 8.0 m/s while the river flows directly north at 2.0 m/s. Find VR.

123. ## chemistry

Why is it important to list what you already know about a problem ?

124. ## Grammar

Is this grammatically correct? However, through influence by Lord Henry Wotton with his words, “Don’t squander the gold of your days, listening to the tedious, trying to improve the hopeless failure, or giving away your life to the ignorant, the

152. ## sculpture

I have Art III Ceramics. I need a concentration piece to make at least 5 sculptures. I decided on pandoras box. the 5 emotions that were chosen were hope, sickness, vanity, jealousy, and lazyness. I know this is an uncreative way to get a concentration

153. ## accounting

If sold inventory had cost 1500 for 2750 on a account under terms 2y10, ny45

154. ## chemistry

if 14.7g of na reacts with 7.9g og br how many grams of nabr are found

155. ## statistics

The cholestetol levels of young women aged 20 to 34 vary with a mean of 185 milligrams per decliter and standard deviation 39 mg/dl. What cholesterol level would be a young woman have in this age group if they were 2 standard deviations below the mean?

156. ## science

Suppose you are presenting a science project that compares the temperatures of several different substances. Would you present your findings using degrees Farenheit, Celcius, or Kelvin? Explain.

157. ## matematicas

minimo comun denominador de 4 y 9

158. ## Physics

How much energy (in cal) is required to raise the temperature of 15.0g of isopropyl alcohol from 10.0 C to 25.0 C?

159. ## calculus

Solve lim x->7+ as....sqrt(x-7)^3/(x-7). I found that it equals 0, but I don't know if I did everything right.

160. ## math

The buyback buy store is going to make an order which will include at the most 60 refrigerator. 71 refrigerator and 118 the.

161. ## math

if the reciprocal of the opposite of a number, x, is equal to 9 times the opoostie of the number, then the number could be?

162. ## matha

the sum of area and perimeter ofintegral right angle triangle is 288. find the sides.

163. ## math

setup an equation or expression to model the situation below: what is the volume of a box that can be created from a sheet of metal that measures 12 inches by 30 inches? assumer there is no top to the box.

164. ## math

how to simplify the following,please step by step 56x^7+21x^4+63x^3

165. ## math

order 3/10 from least to greastest

166. ## social studies

what countries that wanted to populate the New World.

167. ## physics

A plane flies south at 220 km/h and is blown west by a 90. km/h wind. Calculate the resultant speed.

168. ## Math

Anthony estimated the following problem: 15,296 + 28,281 He rounded to the ten thousands place. His estimate was 40,000. Did he underestimate or overestimate? Explain.

169. ## religion

Jains do all of the following EXCEPT A. perform puja in temples B. practice purification rituals C. meditate and reflect to perfect one's character D. offer ritual sacrifices to gods

170. ## precalc review/calc

For the curve y=2^[sqrt(9-x2)], find the range of the function. I think the range is [0,8] but I don't know why. Could you show me how to get to that answer? Thanks.

-8

172. ## physics

A crane uses a block and tackle to life a 25 kN boulder to a height of 26 m. a. how much work is done on the stone? put your answer in scientific notation. b. if the work is done in 15s, what is the power output in watts and in horsepower?

173. ## chemistry

5.0% glucose has a specific gravity of 1.02. what is the mass of 470mL of glucose solution.

174. ## Math

A cylindrical can with both a top and bottom has the same surface area as a cube with edge 50mm. The height of the can if 6cm. Find the radius of the can to the nearest thousandth.

175. ## math

(2 revolutions/second)(60 seconds/minute) would this just be: 2 rev. per second • 60 seconds= x rev. per minute 120 revolutions per 60 seconds 120 revolutions per minute answer= 120 revolutions per minute

176. ## philospy 103

In the conditional "P →Q," "P" is a my answer is necessary condition for P

177. ## math

let x and y be whole numbers greater than 0 with y>x which has the greater value 3x or 3y

178. ## chemistry

What volume of 2.50 x 10-4 M CV+ solution should be diluted to 10.0 mL to prepare a 7.50 x 10-5 M CV+ solution

179. ## Science

Container A and B both container the same kind of liquid. Container A has a volume of 5 mL and Container B has a volume of 8 mL. Which container, if either has the highest density? Explain your Answer.

180. ## math

In bowling, a handicap is determined by subtracting your bowling average from 180 and then finding 80% of this difference. Freddie bowls games of 178, 156, 149, 155, 172 and 180. Freddie's handicap is__________. I came up with 12. Could you check if this

181. ## math

The buyback buy store is going to make an order which will include at the most 60 refrigerator. 71 refrigerator and 118 the.

182. ## English

A: Seho, what are you doing? B: Hi, Inho. I'm doing my math homework. A: Hurry up! We have to play soccer in the playground. B: We have a soccer match on Thursday. Today is Wednesday. A: No, it's Thursday today. Come here quickly. B: Sorry. I'll be there.

183. ## math

setup an equation or expression to model the situation below: find the shortest distance from the point (2,4) to the curve y=4x^3+1

184. ## Math

Jarrod wants to save $245 to buy a Wii gaming system. If he was saving$35 each month, how long would it take him to have the needed money? 7 months? The border between Texas and Mexico is 248 miles. If there are 32 countries along the border, about how

185. ## Math

7. If 6x=secӨ and 6/x=tanӨ then find the value of (X2-1/X2)

it is a three digit whose ten digit is 3 its hundred digit is 4 more than its one digit, which is an odd number less than 5 no two digits are the same I need help on how to do this. too many years for mommy

187. ## Algebra

.428571428571 with the digits 4,2,8,5,7,1 repeating indefinitely in that order. What digit is in the 200th place. To the right of the decimal point? Is the answer 8? Please show your work.

188. ## chem

Pka=pH when[HA]=[A- ]. What is [A-]/[HA] WHEN PH=PKA+1 AND WHEN pH=pka-1

189. ## math

2x^3+7x^3-18x-63

190. ## math

a company has two job opening and has received a total of 50 applications. what is the chance that an applicant will get hired?

191. ## HISTORY

During the turbulence of the 1960s, black activism focused primarily on A. stopping the Vietnam War. B. supporting the nonviolent strategies of Martin Luther King, Jr. C. expanding voting rights. D. expanding economic opportunity. I THINK IS D. IS THAT

3x/y - 5

193. ## math

is surface area squared? if I got 201 meters for the surface area would it be: 201 meters or 201 meters ^2

194. ## social studies

Is there 51 states? Is DC considered as 5lst or Puerto Rico 51st

195. ## math

Some 4 digit numbers have 4 digits that have a sum of 23. what is the smallest such number that is a multiple of 4?

196. ## College Math

What would 10 to the 16th power be?

197. ## math

Does (-4a)^2 = 16a^2 or -4a^2 ???

198. ## math

solve the absolute value 3/2x+4/-1=11 // stands for brackets could someone explain /2x+7/26 /2x-1/=3 I do not understand if someone could help

199. ## algebra

evaluate the expression for variables -(4h-1)/1+h;h=2 /-4b-8/+/-1-b^2/+2b^3;b=-2 9c-6d+4c-3d 9/9-8x=2x+3 If anyone could please help me, these I have not been able to figure out. Any help is appreciated. Thank you

200. ## math

how to work out root 5 of 0.035

201. ## world history

3 most important moments of democracy?

202. ## Math

Convert 60,000 BTU/hr to in.cubic feet/minute.

203. ## math

a=7-3a. for example 2=7-3(2)=1. if 6-x=2-x, find the value of x. the problem i am having is that the first a is in a square box and the first 2 is in a squre box. so does 6 and -x in a square box. I am not sure what the boxes represent?

204. ## Prealgebra

2/3(7x+6/7)=-160/63

205. ## HIS 103

How has the nature and technology of warfare evolved, from earliest times to 1500 CE?

what is the

207. ## english

Many greek tables had three legs that ended in feet shapec like paws. Am I correct in saying this is adjective clause

115=-5(1+4b)

54x^5-16x^2