# Questions Asked onNovember 28, 2011

1. ## chem

Classify as a strong, weak, or non electrolyte. FeCl2, HBr, HCN, CaCO3. I put FeCl2 and HBr as strong, HCN as weak and CaCO3 as non.

2. ## calculus

find the work done in winding up a 175 ft cable that weighs 4.00 lb/ft?

3. ## statistics

This table shows claims and their probablity for an insurance company. AMOUNT OF CLAIM PROBABILITY $0 0.65$50,000 0.25 $100,000 0.06$150,000 0.02 $200,000 0.01$250,000 0.01 1. Calculate the expected value? 2. How much should the company charge as an

4. ## World Geography

What biomes have the highest population density?

7. ## chemistry

5. The industrial production of hydroiodic acid takes place by treatment of iodine with hydrazine (N2H4): 2I2 + N2H4 → 4HI + N2 a.How many grams of I2 are needed to react with 36.7 g of N2H4

8. ## Physics

Zinc has a work function of 4.30 ev . A 4.50eV photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron?

9. ## geometry

YW bisects angle XYZ. m of angle XYW = (2x + 7)degrees and m of angle XYZ = (6x - 8)degrees. Find the value of 'x'.

If I get a scholastic art and writing award (winner earns a scholoship) every year will that help me to get to yale. This is a curious question becuase I'm doing this this years and every year till my senior year.

98. ## math

the favorite foods of a selected group of 5 year olds. A total 5,280 childern were polled. How many children chose pizza? 40% were pizza, pasta 30%, cheese 12%, french fries 14% undecided 4%

99. ## Physics/Science

At what point in the swing of a pendulum is the maximum amount of the ball's motion transferred to the object it hits? (I think it's at its lowest swing point but I'm not completely sure.) And what does this "kinetic energy" depend on?

100. ## math

rodney opens a saving account and deposits 3000 dollars. the saving account earn 5% yearly simple terest. If rodney does not deposit any additional money into the account, how much compound interest did she earn over all 3 years

101. ## Math

I lost the last link.... Triangle DEF has D= 58 degrees, E= 41degrees52', and f(little f)= 0.032 microns. Find d 52/60 (to get the inches gone) 58+41.86(repeating for quite a fe2 digits) 180-99.86666667=80.13333 So my equation is f Sin85/Sin80.1333 How

103. ## Stats

A simple random sample will be obtained from a normally distributed population. Find the minimum sample size needed to be 99% confident that the sample standard deviation s is within 5% of the standard deviation. Is such a sample size practical in most

104. ## math

Factor 18-9t+t^2 I don't think this is factorable help

105. ## biology

divides the new plant cells in telophase

106. ## Intermediate algebra

Hello, I am kind stuck on this question In the lab you discover a relationship between the temperature of the air and the speed of sound. You find the speed of sound is never lower than 331 m/s and increases by 60% of the current temperature. a. What is

107. ## math

solve v^2+v-6=0 Would v=2

108. ## Physics

A great white shark with a mass of 3000 kg swimming at 3.00 m/s swallows a 250 kg fish at rest. What is the speed of the great white shark right after swallowing the fish?

109. ## chemistry

Volume of 0.185 mol . L-1 and 0.74 M

110. ## calculus

Consider the function whose second derivative is f''(x)=7x+6sin(x). If f(0)=2 and f'(0)=3 , find f(x) .

Do you think unskilled labor is just a commodity or input

112. ## math

One box holds 16 crayons another box holds 24. Write a sentence using words that compares the crayons in the two boxes.

113. ## calculus

find the area of the region under y=6 ln(3 x) and above y=8 for 4

114. ## Math

divisible by 15,27,36,16,28,57,102,268,4518,93

115. ## accounting

refer to christmas company. how many units are to be tracked for forming?

116. ## com 172

Review the following passage and paraphrase it in the following box. Use the reference to create an appropriate APA-formatted in-text citation. Additionally, include one direct quotation. One of the most valuable skills a student can develop is focus.

117. ## calculus

Let f''(x)=5x+5 with f'(2)=1 and f(-2)=2. Find f'(x) and f(3)?

118. ## Calculus

Given f"(x)=-25sin(5x)and f'(0)=0 and f(0)=4. Find f(pi/2)

119. ## Vision Math

Explain to me how this is true: Six people are given 1/10 of a veggie pizza and 2/5 of the pizza is left how is that true?

120. ## Math

Your search for Determine the number of square meters of vinyl needed to line the inside of a right rectangle swimming pool. The pool is 7m long, 4m wide, and has a uniform depth of 2.5m returned no results.

121. ## physics

1- How are transformers made efficient using the key idea of "eddy's current" and "laminate" 2-there is a copper tube thee are 2 waights the same mass, one travels faster down the tube and one travels slower down the tube. why is that. can you please

122. ## social studies

how did turnpikes,canals,and railroads affect the way that people in different states interacted

123. ## Physics

A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of è = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the

124. ## Math

how do I factor 18w^2+24wt+8t^2

125. ## geometry

If the area of a trapezoid is 209 square yards and the bases are 15 yards and 23 yards. What is the height of the trapezoid?

126. ## Chemistry

At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O?

127. ## English

Hello. Please tell me if it's possible (and natural) to say: 1)the city central square; 2)the central city square; 3)the city's central square. The meaning: the central square of the city. Thank you for help.

Imagine that you own a small, local clothing store along the Jersey Shore boardwalk and decide that you want to engage in e-Commerce. Write a 4-5 page paper on the following: 1. Imagine that someone has offered you $1,000 to buy your domain name shortly 129. ## PHYSICS If the dummy is thrown forward with a force of 130.0 n while simultaneously being hit from side with a force of 4500.0n what force will the seat belt have exert on the dummy to hold in seat 130. ## ALGEBRA A newspaper article discussing whether Social Security could be cut offered the information shown in the figure. Use the information in these graphs to answer the question. What is the difference between the amount of money collected from Social Security 131. ## English 7 Is there any infomation that tells how Rosa Parks became a civil rights leader (3 supporting deatils). Thank You!!! 132. ## math the populaaion of oak fores is increasing a a rae of 2% per year. If the populaion is 64,242 today, wha will it be in three years? 133. ## socials the three turning points in world war 2 i think that is El Alemein, stalingrad, midway. stalingrad where hitler tried invade ussr but he failed. 134. ## ALGEBRA A newspaper article discussing whether Social Security could be cut offered the information shown in the figure. Use the information in these graphs to answer the question. How many workers pay into Social Security for each person getting benefits in 2000? 135. ## math- factoring factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3 136. ## socials teacher talk about wolf packs and i not know what that is. i think that submarines used by Germans. what difference between that and u boats? 137. ## algebra if$192 increased to $363 in 2 years. what is the interest rate 138. ## social studies why did railroad construction end canal building 139. ## socials what bring americans in world war 2? I think invasion of pearl harbour bring them in world war 2. 140. ## English Do you think unskilled labor is just a commodity or input 141. ## Business Can anyone tell how to analyze a committee meeting theoretically as it relate to leadership theory. I am having a difficult time starting. 142. ## history What was the secret CIA operation to overthrow the Cuban Government called? Operation Seagull The Bay of Pigs operation Operation Mongoose Order 632 I think its operation mongoose? 143. ## Finance GE issued preferred stock that had a par value of$100. The preferred stock pays a dividend of 6.50%. Investors require 5.7% today on this stock. What is the value of the preferred stock today? Round to the nearest $1. (A)$100 (B) $88 (C)$75 (D) $114 144. ## physics A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. The mass of the box is m. The ramp is inclined at an angle of  above the horizontal and the coecient of kinetic friction between the box and the ramp is k. 145. ## Operations Management You are managing a breakfast and lunch only restaurant that sells all-inclusive plated meals (i.e. all lunches include any protein or hot foods as well as salads and sides on a single plate). You’ve decided to try and apply “drum-buffer-rope”. You 146. ## Math find the following ã(12&(-6))^12 147. ## Finance IBM's common stock has a beta of 0.85. If the expected risk-free return is 4.5% and the market risk premium is 7%. a) Calculate IBM’s required rate of return (10pts) b) Assume IBM’s actual realized return is 15%. Calculate its abnormal return (i.e. 148. ## Operations Management 6. You manage the Distribution Center shown in the diagram below which, for one particular product, supplies only the two retail locations, A and B. You want to convert from your old Reorder Point-based ordering format to Pull Replenishment. It takes you 2 149. ## Algebra Using Proportionality How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5" 280-300 weight Canada 150. ## history/english are southerners considered to be immigrants? 151. ## Science Okay, say im doing a science fair project, and I am not really good at coming up with questions, what would be a good question to ask about Newtons First Law of Motion 152. ## math julia shoots 40 baskets and makes 30 what percent did she make 153. ## Pre Algebra I am having a problem with slopes and intercepts problems. Write each equation in slope-intercept form. Find slope and y-inercept. 3x - y = 14 154. ## trig Write cot(t) in terms of sin(t) if the terminal point determined by t is in the first quadrant. Do not leave a fraction inside a radical or use absolute value. 155. ## precalculus graph the parabola y=2x^2-6x-3. plot point on the parabola A[1,-7] and draw a line through A with an angle of inclination equal to 30 degrees. then find the equation of the line and its second point of intersection B, with the parabola 156. ## Math I need help with an equation problem. Write the equation of the line that passes through each pair of points. (-2, -7) and (3,8) 157. ## math You have used 225 of your 500 sheets of printer paper. What fraction of the paper have you used? 158. ## Algebra To determine the question use Frogs F and G are 5cm to cube and 40cm to cube. a. Ratio What are ratio volumes and surface areas for a frog? (The formula for figuring out this data A correlation V square=2/3 Ratio Volumes: Surface areas: b. Toxin Let us say 159. ## Health 26. When someone is choking you need to perform chest compressions. -False? 31. The female reproductive cell is called an egg. -False? 34. If the egg is not fertilized, then conception occurs. -False? 45. The embryo is a blood vessel-rich organ that forms 160. ## math - Please help me to understand The average selling price of homes in a certain city is$356,300. Assume the variable is normally distributed with a standard deviation of $64,600. If 396 homes are for sale, how many homes will sell for more than$325,000? (Round up to the next whole

Issac has to do 1000J of work on a 5kg box, and all the work he did simply went into lifting it above the ground. How high above the ground will the box be when all the work has been done?

162. ## physics

In a European country a bathroom scale displays its reading in kilograms. When a man stands on this scale, it reads 90.4 kg. When he pulls down on a chin-up bar installed over the scale, the reading decreases to 79.5 kg. What is the magnitude of the force

163. ## Calculus

Hello, could someone please help me with this problem? I'm a little stuck with it. Thanks, Isaac A rectangle is to be inscribed with its base on the x-axis and its other two vertices above the x-axis on the parabola y=9-x^2 (a) find the dimensions of the

164. ## phsyics

A 40.6-kg crate rests on a horizontal floor, and a 69.1-kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exerts on the person.

165. ## calculus

w=4e^sqrt(s) Find the derivative of the function.

166. ## English

Hello. Do you think it is possible to say: "to post photos in the press" or is it "to publish photos in the press"? Thank you for help.

167. ## Social Studies 9

PLEASE i really NEED HELP; and i need this by TOMORROW. -no links please . How and why was Hudson bay company established ?

168. ## Math

∛(y^13) ∛(16y^14)Multiply and simplify assume all expressions under radicals represent non negative number My friend helped me she said azanswer is 12(y^13)(square root sybol y)

169. ## Calculus

Sand is being dumped from a conveyor belt at a rate of 20 cubic ft/min into a pile the shape of an inverted come whose diameter and height are always the same. (a) Find the rate of increase of the height when the pile is 10ft high. This is a 2 part

170. ## Geometry

The figure is formed from tectangles. Find the total area 8Ft 5ft 3ft 3ft I just can't figure this out. or I am having a blond moment

171. ## statistics

Suppose that weights of 5th grade elementary boys are normally distributed with mean µ =90 lbs and variance ó2 = 4 lbs. Find the weight that corresponds to Q3 and interpret this measure of position.

172. ## Chemistry

Determine the final end (final) value of n in a hydrogen atom transition, if electron starts in n = 1 and the atom absorbs a photon of light with an energy of 2.044 X 10^-18J? A) 3 B) 4 C) 2 D) 6 E) 5

173. ## physics

(a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 129 km above Earth's surface? (b) What is the period of revolution? All right, I swear I have done everything and cannot figure this out!

174. ## calculus

Find the derivative. f(x)=ln(8-e^-x) I got -e^-x/8-e^-x but it was wrong. WHAT DID I DOOOO?!

176. ## Phsyics

A 40.6-kg crate rests on a horizontal floor, and a 69.1-kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exerts on the person.

177. ## scientist

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

what word goes with lunar?

179. ## Geometry

The piolet of a single-engine airplane flies at a constant speed of 200 km/h at a bearing of N 25 degree E. There is a 40 km/h crosswind blowing southeast (S 45 degress E). What are the plane's actual speed and direction? Round the speed to the nearest

180. ## Physics

What is the magnitude of the gravitational field at the surface of a neutron star whose mass is 1.64 times the mass of the Sun and whose radius is 9.1 km?

I am pretty confused about mechanical weathering and chemical weathering. what is the easiest way to remember the differences of these 2 things

220. ## Biology

Can you explain what the quality of the reverse transcriptase in the HIV virus has to do with the problem that there is still no vaccine against the HIV virus?

235. ## Mechanics

At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a constant acceleration of 0.9 rad/s^2 until it reaches 70 rpm. The motor is then disconnected. How many revolutions are completed at t = 20 s?

236. ## math

Test these conjectures. Give three examples. Explain if the conjecture is correct or incorrect. 1. If a number is divisible by 4, it is always an even number._________________________________ 2. All multiples of 5 have a 5 in the ones

237. ## Comprehensive English

We have a final exam coming up with a comprehensive essay including use of each of the types of essays (strategies) you studied this semester— o Critique (pp. 19-22) o Research (pp. 378-380) o Comparison (pp. 217-218) o Illustration (pp. 186-187) o

238. ## English

Hello. Please help me with the correct word order: 1)The president says that now / at the moment the government is working on a new plan. 2)The president says the government is now working on a new plan. 3)The president says the government is working on a

239. ## math

just the basic formulas for area, length, and width

240. ## Physics

Four particles in the xy plane have the following masses and coordinates: 1 kg at (3 m, 3 m), 2 kg at (-2 m, 4 m), 3 kg at (3 m, -2 m) and 4 kg at (-3 m, -4 m). Find the total moment of inertia about: x-axis? y-axis? z-axis?

241. ## physics

if you want to reach a speed of 13 m/s at the top of the loop-the-loop, how much power must you supply to the go-kart?

242. ## Physics

Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through: a) the midpoint of the rod; b) the center of mass of the system of

269. ## Math

John Receive a 10,000 loan, with an interest rate of 6 %, for 6 years. What is the Remaining Principal Balance after the 9tht payment?

280. ## maths

The equation of the circle is x(squared)+y(squared)-3x -4=0.Find : (i)the coordinates of its center and the radius (ii) the coordinates of the points at which it cuts the x-axis

Y=30X+.25

282. ## calculus

A party store ordered 50 cases of balloons. The number of cases in stock t months after the order arrives is given by the equation 50e^(-.9t). What is the average number (exact and approximate) of cases in stock over the same 6 months?

283. ## math

Antiderivativeofe.5x-0.1x

284. ## Geometry

Anyone have the Amsco's geometry textbook and can help me out with some homework?

285. ## Mechanics Of Materials

How do you determine what distance to use to sum the moment in the loaded portion of a conjugate beam? I think on the shear portions that you use [2/3]*L (center of mass for a constant density triangle), but I have no idea what to use for the... bending

286. ## English

Stupid question but i have two critiques on Robert Frost's "Stopping by Woods on a Snowy Evening", how would i write the critics points without quoting like everything they stated? The critics have made some major points but i don't want to quote

287. ## math

81,__63,__,45,__

288. ## science

Describe the process by which a fungus feeds. A fungus feeds first by growing hyphae into the food source. Then chemicals ooze from the hyphae into the food source. The chemicals break down food into substances that the hyphae are able to absorb. I used

289. ## Physics

At t = 0 s a flywheel is rotating at 30 rpm. A motor gives it a constant acceleration of 0.9 rad/s^2 until it reaches 70 rpm. The motor is then disconnected. How many revolutions are completed at t = 20 s? number of revolutions?

290. ## Physics

In the experiment, a meter is hooked up to a speaker to monitor the amplitude of the received sound. Suppose the background signal level is 15 mV, the signal is 90 mV with no attenuator and is 30 mV with an attenuator in place. Calculate pt/pi including

291. ## Math

Three neighbors are sharing a rectangular strip of land for a garden.They divide the landinto equal peices. What fraction of the land does each person get if they share it equally? Write the answer in more than one way.

292. ## Getting Work done with Pulleys

Wats the hidden shortcut to figure the mechanical advantage for a pulley system by not doing calculations? Is that using many pulleys at once? I really don't know. Just guessing.

293. ## math discrete

(a)Sarah wants to make a bracelet. She needs some beads and goes to a shop where they sell beads in exactly 100 different colours. i. How many ways can she pick 25 beads, each of a different colour? ii. How many ways can she pick any 25 beads? (b) Suppose

294. ## physic

An infinite uniformly-charged sheet with a = -2 x 10^-10 C/m2 occupies the yz plane. A deuteron1 is created at a point on the +x axis 5 m from the sheet. The deuteron is produced with zero kinetic energy and is free to move. a) What is the location of the

295. ## physics

For no apparent reason, a poodle is running counter-clockwise at a constant speed of 3.40 {\rm m/s} in a circle with radius 2.2 {\rm m}. Let \vec v_1 be the velocity vector at time t_1, and let \vec v_2 be the velocity vector at time t_2. Consider \Delta

296. ## Math

A bag contains 5 slips of paper. On each slip is written the name of a member of the Avila family--Mr.Avila,Mrs.Avila,their son,or one of their 2 daughters. Find the probability of each outcome if you take a piece of paper out of the bag without looking.

297. ## science HElp

the covalent bond between the monomers of an enzyme macromolecules are peptide ester or phosphodiester bond question2 why urctic forx change coloring from brown in summer and white in winter . My answeers is = fox change phenotype but genotypes does not

298. ## Biology

Describe how the location of each part of the cellular respiration is diffrent in bacteria and in more complex cells?

299. ## basic question

why is it if you guys don't know the answer or if you don't want to answer a question do you guys leave it unanswered. At least you could do is comment back and say you don't know it to at least let people know that you have seen their questions.

how to do Legal Research for this Issue Employment Discrimination 2. Textbook reference: Chapters 5, 35 3. Possible search terms: ethics, employment discrimination, Title VII, past discrimination 4. Here is the situation: ABC Corporation decides to respond

301. ## math

stacy multiplied 5x9 andand said the answer was 44. what two patterns could you use to show that her answer is not correct?

302. ## Chemistry

What happens when hydrogen sulfide is heated through an iron sulfide solution?

303. ## chemistry

8). What is the pH of a fruit with a [–OH] = 3.2  10–9 M –OH? A) 10.5 B) 8.49 C) 3.51 D) 3.5