# Questions Asked onApril 29, 2012

1. ## Algebra

The formula for the volume of a cylinder is: V=πr^2*h If the volume is 432 cubic inches and the height is 8 inches, solve for the length of the radius.

2. ## geometry

Write an equation for each circle if the coordiantes of the center and length of the radius are a. center(-1,-5) radius = 2 units b. center(0,3) radius = 7 units c. center(-9,7) radius = 1/2 units

3. ## math

Write the slope-intercept equation for the line with slope -2/5 and y-intercept (0, -3) and graph the line.

4. ## psychology

Can the expression on your face produce the emotion which you would like to experience? Explain. ------ I believe that expression on ourface produce the emotion which we would like to experence. right? even though we are sad inside we tend to be happy. and

5. ## geometry

Find the coordiantes of the center and the radius of each circle a. (x+root5)^2 + y^2 -8y =9

6. ## geometry

Find the coordinates of the center and the radius of a circle with and equation of: a. x^2 + 2root7x +7 + (Y-root 11)^2 =11 b. x^2 -12x + 84 =-y^2 + 16y

7. ## psychology

Discuss the biological consequences of stress as outlined by psychoneuroimmunologists. thank you

8. ## Homework

The formula for the volume of a cylinder is: V=πr^2*h If the volume is 432 cubic inches and the height is 8 inches, solve for the length of the radius. Round answer to 2 decimals.

9. ## math

An arithmetic series has a first term 8 and third term 20. What does the fifth term equal? What does the second partial sum equal?

10. ## Statistics

When fifteen vehicles were observed at random for their speeds (in M.P.H.) on a freeway, the following data were obtained. 61 53 57 55 62 58 60 54 62 60 59 66 55 54 63 Suppose that from past experience it may be assumed that vehicle speed is normally

11. ## MATH

A rectangle pen for a pet is 5 feet longer than it is wide. Give possible values for the width W of the pen if its area must be between 266 and 750 square feet, inclusively. The width of the pen from the smaller value of the width is how many feet to the

12. ## MATH

The cumulative number of car accidents from 2000 to 2010 can be modeled by the quadratic expression, C=-42x^2+924x+14,112, where x=1 corresponds to 2001, and so on until x=11 corresponds to 2010. Find the number of cumulative car accidents in 2003. Use the

13. ## Algebra 2

If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s(where h and s are in ft, t is in seconds and v is in ft/sec) A package is thrown downward with an

155. ## finite

1. Alabama State University’s Bookstore has determined that the supply function for a certain author’s newest book is p = (1/300)q + 13. The demand function for this book is p = -.03q + 19. Graph both demand and supply functions on the same set of

156. ## British Literature

John Ruskin illustrates a direct correlation between the decline in morality and the pollution visible in his world in “The Storm Cloud of the Nineteenth Century.” Illustrate this principle in action by utilizing between two and four of the texts we

157. ## Calculus 3

find the curvature of r(t) = at the point (1,0,0)

158. ## chemistry

The combustion of propane is given by the following reaction: C3H8 (g) + 5 O2 (g) ---> 3 CO2 (g) + 4 H2O (g) If 5.00 L of propane are burned in in the presence of excess O2, how many liters of carbon dioxide will be formed?

Calculate the concentration of HCO3- in an aqueous solution of 0.0885 M carbonic acid, H2CO3 (aq). I was going to set this up as 0.0885 -x = ? Am I suppose to use the Ka value for carbonic acid?

160. ## Help W/ Definite Integrals

Evaluate the definite integral of (4x^3-x^2+2) from 5 to 2. Can someone please explain what I'm being asked to do? My book is not clear on this concept.

161. ## chemistry

How can you prevent or stop eutrophication

162. ## Geography Help??

show how society and family life compare and contrast in the Pacific Rim? I don't need an answer, just an explanation please. I don't know what that means..

163. ## math

Given A = {5, 6, 7}, B = {3, 4, 5, 6}, and C = { 4, 5, 6, 7}. Evaluate each set A ¿ B b) A U C c) B U C d) (A U B) ¿ C e) A U (B U C) f) (A ¿ B) ¿ C g) (A ¿ B) U C

164. ## Science

A diver standing on the diving board has a mass of 89.0 kg and has a gravitational potential energy of 2.50 x 103 J. Determine how high the diver is above the water surface. (Assume the water is at ground level).Use 9.81 m/s2 as the value for gravity.

165. ## Physics

A balloon rubbed against denim gains a charge of −2.0 µC. What is the electric force between the balloon and the denim when the two are separated by a distance of 5.0 cm? (Assume that the charges are located at a point.) The value of the Coulomb

Can you write them in Mathematical/numbers form I'll solve them myself. i don't really get it though i have written the first one in mathematical for but i'm not sure if that's right. 1. When six is subtracted from five times a certain number, the result

167. ## science

how can concentration of Cl- in mixture of two chlorides be calculated given concentration of the chlorides

168. ## Chemistry

Calculate the concentration of H+(aq) and the concentration of OH-(aq) for the following solution with the following pH at 298K showing all your working. pH = 3.20

169. ## Algebra

Determine the comparable interest rate for a $60,000 loan when the quoted information is 10.7% + 0.5 pt +$200. (Round your answer to two decimal places.

World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15m/s^2 . Part a)How much horizontal force F must a sprinter of mass 60kg exert on the starting blocks to produce this

Point N is on hypotenuse BC of triangle ABC such than angle CAN is 45 degrees. If AC=8 and AB=6, find AN.

asked by My Name Is Bob
172. ## college physics

Superman must stop a 190-km/h train in 180m to keep it from hitting a stalled car on the tracks. part a)If the train's mass is 3.8×10^5kg , how much force must he exert (find the magnitude)? part b)Compare to the weight of the train (give as %). partc)

Question #1 A 0.140kg- baseball traveling 30.0m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 14.0cm . What was the magnitude of the average force applied by the ball on the glove? question #2 How much tension must a

174. ## life orientation

explain 5 factors that contribute to the substance abuse

175. ## Physics

A small cork with an excess charge of +6.0 µC is placed 0.25 m from another cork, which carries a charge of −3.2 µC. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 × 10 9 N · m2 /C 2 . Answer in units

176. ## stats

suppose that the wait time at the bank is uniformly distributed in the interval 4-min-8min find the probability that a randomly selected customer has to wait longer than 6.5 minutes

177. ## geometry

word problem can you help me: a trapezoid has an area of 4 square units, and a height of 1 unit. what are the possible whole numbers lengths for the bases? would the only whole number be; 4? im not sure how to answer this

178. ## Economics/History

What trend did Johan Palmstruch start in Europe? How successful was this trend?

179. ## geometry

if you know the area of a parrallelogram is 45.0 square feet and the base is 10.o feet, how can you find the height? Explain your method and then solve the question.

180. ## physics

A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 4.0 cm. a)Find the frequency of this radiation. b)Find the time required for a pulse of radar waves to reach an airplane 4.8 km away and return.

181. ## math

the probability of havingtype O blood is 1/2 and the probablity if having type A blood is 1/4. what is the probablity of a person having either typr O blood or type A blood ?

182. ## Chemistry

Write the IUPAC name for straight-chain hydrocarbon with this formula: CH3CH2CH2CH2CH2CH2CH3 Write the IUPAC name for any branched-chain hydrocarbon with this formula:C9h20

183. ## physics

question : net force of 225 N accelerates a bike and rider at 2.65m/s^2. What is the mass of the bike and rider together ?

184. ## geometry

i have to find the area of an irregular polygon how can i draw a picture to send you to show you? is this possible?

185. ## @elena

thank you so much help with the problem. i have trouble solving part b of the problem you helped me with. it told me to give it as a percentage, I got 10% but it is wrong. can you please help me Superman must stop a 190-km/h train in 180m to keep it from

186. ## Intermediate Algebra

The magnitude of an earthquake on the Richter scale is given by the formula R=log I, where I is the number of times more intense the quake is than the smallest measurable activity. How many times more intense i an earthquake having a richter scale number

187. ## English Parallelism

I need help with parallelism i need to rewrite these sentences. 1. Because of prejudice in the corporation, not only did he leave but also sued for two million dollars; he did not win the case in court. 2. Since he wanted neither to get a ticket nor bother

188. ## Chemistry

This volume of base and its corresponding pH is known as the______

189. ## english

what point about technology was Ayn Rand making by portraying such a primative future, and how do the events of the story establish that point?

190. ## statistics

For a normal distribution with a mean of 140 and a standard deviation of 55 find each value requested. a. What is the minimum score needed to be in the bottom 10% of the distribution? b. What scores form the boundaries for the middle 75% of the

191. ## Chemistry

What is the [CrO4] in a 2.5 L saturated solution of lead (II) chromate to which 0.05 mol Pb(NO3)2 is added?

192. ## statistics

You are designing a study to determine whether music has an effect on learning. Previous research indicates that the standard deviation to learn a task is 3.4 minutes. How many subjects would you need to ensure with 90% confidence that the estimate is

193. ## Computer science

A. Given a = 5, b = 1, x = 10, and y = 5, create a program that outputs the result of the formula f = (a b)(x y) using a single printf() function. B. Create a program that uses the same formula above to output the result; this time, however, prompt the

194. ## precalculus

a rectangular piece of cardboard measuring 14 inches by 27 inches is to be made into a box with an open top by cutting squares of equal size from each corner and golding up the sides . let x represent the length of a side of each square. for what value of

195. ## Algebra

x2 - 5x + 5 = 0

196. ## GED-Word Problems

Ms. Niemeyer is taking the train 3,240 miles to Oregon. She will travel 1/8 the distance the first day and 1/6 the distance the second day. How far will she have left to go after two days?

197. ## Chemistry

Please check a Nernst equation for me? Calculate the cell potential for the following reaction as written at 61 °C, given that [Zn2 ] = 0.800 M and [Fe2 ] = 0.0170 M. Half reactions: Zn-->Zn^2+ + 2e^- (potential= -0.76)(anode) Fe^2+ + 2e^- -->Fe

198. ## biology

Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions.

199. ## biology

Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? write the reaction for this procss (Crp +ADP => Cr + ATP) as a 'coupled' reaction, identifying the exergonic and endergonic reactions. what would this type of ATP

200. ## algebra 2

Coffee Express sells three drinks -lattes mochas and cappuccinos. Each latte has 3 ounces of espresso and 13 ounces of milk. Each mocha has 3 ounces of espresso 11 ounces of milk and 2 ounces of chocolate syruo. Each cappuccino had 5 ounces of espresso and

201. ## math

if 1 centimeter on a map repesents 10 kilometers then 6cm represents how many km/

223. ## Economics

You bought the bond for $1,040, after 6 months you received a coupon of$35 and after another 6 months you received another $35 coupon and you sold the bond for$1,070. What would be your total dollar return in that case? What would be your total

224. ## math

each bead has a value according to its color how do you finnd the value of the beads

241. ## chemistry

if 180 grams of ice at -123 degrees celsius is heated to steam at 125 degrees celsius, how much energy would it take?

242. ## ALGEBRA

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.) $300 balance, 18% rate,$250

243. ## physics

An astronaut on the Moon attaches a small brass ball to a 1.00- m length of string and makes a simple pendulum. She times 15 complete swings in a time of 75.0 seconds. From this measurement she calculates the acceleration due to gravity on the Moon. What

247. ## physics

Rank the speed of sound through the following from greatest to least:A. HeliumB. Benzene C. Mercury

248. ## chemistry

a salt solution is evaporated to dryness. If 25.7 g of the solution leaves 1,949 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution

If $835 is invested in an account that earns annual interest of 4.5%, compounded semiannually, what will the account balance be after 13 years? (Round your answer to the nearest cent.) asked by Mike 250. ## physics Rank the beat frequency from highest to lowest for the following pairs of sounds:a. 876 Hz, 871 Hz b. 786 Hz, 784 Hz c. 721 Hz, 728 Hz d. 542 Hz, 541 Hz asked by Jim 251. ## chemistry calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq) asked by Randy 252. ## chemistry calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq) asked by Randy 253. ## chemistry how many moles of sodium chloride are in 937 mL of a 1.88 M solution of sodium chloride? asked by Randy 254. ## Physics- Final exam help A proton with kinetic energy 100 keV is moving in a plane perpindicular to a uniform magnetic field of magnitude 2.3 T. Find the radius of its orbit. Not sure what equation to use or how to solve. asked by Tim 255. ## physics a 1250 kg car, rolling at 40km/h along a flat frictionless surface strikes a horizontal coiled spring and is brought to rest in a distance of 2.5m. Assuming there is no friction, what is the spring constant of the spring? asked by amanda 256. ## Math -Urgent!!! List all the possible rational zeros of f(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show me please. asked by Tabby 257. ## Algebra -4x+1-2(x-1)= -4(x-4) asked by David 258. ## Algebra 2 A package with square ends has combined length and girth(girth is perimeter of a cross section) of 120 in. The surface area of the entire package is 3600 sq. in. Determine the dimensions of the package. s in. * s in.* l in. One solution is: 11.08in. * asked by Nancy 259. ## physics Imagine a Rip van Winkle type who lives in the mountains. Just before going to sleep, he yells, "WAKE UP", and the sound echoes off the nearest mountain and returns 7.6 hours later.Find the distance between Rip and the imaginary mountain. asked by Jim 260. ## Chemistry 50.0mL of 0.01M Ba(OH)2 is added to 150.0mL of 0.01M HNO3. What is the new pH of the solution? asked by Zac 261. ## area and volume A balloon has a circumference of 22in. Use the circumference to approximate the surface area of the balloon to the nearset square inch. possible answers; 154in^2 616in^2 1,521in^2 484in^2 Find the volume of the square pyramid.Round to nearest tenth if asked by lilman 262. ## physics What beat frequencies are possible with tuning forks of frequencies 258, 263, and 267 Hz? asked by Jim 263. ## Calculus Consider the area between the graphs x+1y=12 and x+8=y2 . This area can be computed in two different ways using integrals First of all it can be computed as a sum of two integrals Interval a to b f(x)= i put 12-x but it's wrong Interval c to b f(x)= i put asked by jasmineT 264. ## chemistry How many grams of oxygen are collected in a reaction where 245 mL of oxygen gas is collected over water at a temperature of 25 ^\circ {\rm C} and a total pressure of 688 torr asked by raul 265. ## Physics a 1.5kg cannon is mounted on top of a 2.0kg cart and loaded with a 52.7 gram ball. The cannon, car, and ball are moving forward with a speed of 1.27m/s. The cannon is ignited and launches a 52.7 gram ball forward with a speed of 75m/s. Determine the asked by Sarah 266. ## Math a young Colorado spruce tree is growing at a rate of 20 cm per year. Currently, it is 244 cm tall. A 300 cm tall white spruce tree is growing at a rate of 12 m per year. In how many years will the two trees be the same height? Solve algebraically asked by Hanu 267. ## Physics after an ice show, Michelle helps clear the props from the ice. Standing in her skates next to a potted artifical tree, she gives it a push. The tree, which has a mass of 6500g, slides forward at a velocity of 13m/s. Michelle, with a mass of 40.0kg, slides asked by Sarah 268. ## geometry in segment pt, l is the midpoint of pa and a is the midpoint of pn. if pn = 17 and la = 3.5, what is the length of nt? asked by Corey 269. ## Physics Philadelphia Flyers player Mike Richards stands on the frictionless ice next to the goal. Neither Mike nor the goal are anchored to the ice. Frustrated after a recent playoff loss, 102.5kg Mike suddenly pushes on the goal, sending it across the ice a asked by Sarah 270. ## Physics In an unusual return to space, Astronaut Sally Ride is conducting repair work on the Hubble Space telescope. She throws a hammer of mass 500.0g forward at 20.0m/s. The astronaut, mass 80.0kg, recoils in the opposite direction. What is Sally's recoil asked by Sarah 271. ## physics Frequency and period are related, in that they are which of the following?A) inverses of each other.B) None of these.C) both on the same wavelength.D) directly proportional to each other.E) two expressions for much the same thing. asked by Kristie 272. ## Physics The mass of a rocket car plus fuel is 2,000kg. The rocket car starts from rest. The engine expels fuel(in the form of exhaust) over a period of 8 seconds. The exhaust has a velocity of 1,000m/s due west, and the velocity of the rocket car after 8 seconds asked by Sarah 273. ## Math Luis has$150,000 in his retirement account at his present company. Because he is assuming a position with another company, Luis is planning to "roll over" his assets to a new account. Luis also plans to put $3000/quarter into the new account until his asked by Terri 274. ## Linear Algebra - Question I have this number that I just wanted to be sure how to do. They give me a Parallelepiped with corners lettered from A to H. Then the question is: In a certain orthonormal reference, the coordinates of points A, B, D and E are respectively A(0,0,2) asked by Jer 275. ## Physics- Final exam review A proton with kinetic energy 100 keV is moving in a plane perpindicular to a uniform magnetic field of magnitude 2.3 T. Find the radius of its orbit. Not sure what equation to use or how to solve asked by Tim 276. ## physics Beats in sound are the result of which of the follwing wave? A) resonance.B) refraction.C) reflections.D) amplitude changes.E) interference asked by Kristie 277. ## Science Vanessa pushes a box with 50 N of force. The box accelerates 2 m/s2 for 10 seconds. What is the mass of the box? asked by Jessica 278. ## Probability and Statistics 2 The numbers below represents heights (in feet) of 3-year old elm trees, where leaves represent fractional parts of each value. Stems Leaves 5 1,8 6 1,2,4,7,8,9 7 0,2,3,3,4,5 8 1,1,2,3,5,6,6,7,7,9,9 9 0,1,3,4 a) Find the five number summary for the given asked by Kim 279. ## algerbra translate the phrase into a mathematical expression and then simplify. nine times a number subtract twice the same number asked by deb 280. ## Math Solve and please explain how you arrived at your ans: square of 3x-1=2 asked by Kadesha 281. ## Probability and Statistics 2 The University of Southern Mississippi currently uses GE brad fluorescent light bulbs that have a mean life of 900 hours. Sylvania clams that its new fluorescent bulbs, that cost the same as the GE bulbs, last longer than the GE brand. A sample of 50 asked by Kim 282. ## Probability and Statistics 2 Minute Maid orange juice company claims that 25% or more of all orange juice drinkers prefer its product. To try to disprove the validity of this claim, Tropicana orange juice company sample 200 orange juice drinkers and found that 41 prefer the Minute asked by Kim 283. ## physics Is it true that all radio waves are faster than all sound waves—no exceptions? A) False always.B) True, in most common cases.C) False in some cases.D) True in all cases. asked by Kristie 284. ## Cultural Dependency theory refers to what? asked by Kim 285. ## Chemisty (please read soon) which will become a buffer in 1L of H2O? a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3 mole HCl d) 0.2 mole NaOH & 0.2 mole HBr e) 0.4 mole HC2H3O2 & 0.2 mole NaOH I think that the answer is e. Is that correct? asked by Zac 286. ## Cultural Anthropology what is Factory industrialism? asked by Kim 287. ## Math Solve for x: x^2 -2x-4=0 asked by Devon 288. ## trig a 6 foot tall man is standing near a tree on level ground .if the man shadow 4 feet long .how many feet tall is the tree? asked by diamond 289. ## Algebra 2 If a rock is thrown upward from a height of 100 ft, with an initial velocity of 32ft/sec, solve for the time that it takes for it to hit the fround (when h=0) Round your answer to 2 decimals asked by Billy 290. ## Stats A manufacturer wants to increase the absorption capacity of a sponge. Based on past data, the average sponge could absorb 3.5 ounces. After the redesign, the absorption amounts of a sample of sponges were (in ounces): 4.1, 3.7, 3.3, 3.5, 3.8, 3.9, 3.6, asked by Tom 291. ## statistics A sociologist is studying marriage customs in a rural community in Denmark to determine the age of the woman at the time of her first marriage. the sample standard deviation of these ages was 2.3 years. The sociologist wants to estimate the population mean asked by Anonymous 292. ## Chemistry 0.200 moles of NaF are added to 1L 2.0 molar HF. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00 asked by Zac 293. ## math A geometric series with the first term 7 converges to 70. What does the common ratio equal? What does the second partial sum equal? asked by Jim 294. ## Stats Consider the following Hypotheses test: Ho:m>=80 Ha:m asked by bobbie 295. ## Statistics The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y)$34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Perform an F test and determine if the price and the number of flash drives sold

50.0mL of 0.1 molar NaOH is added with 50.0mL of 0.1 molar CH3COOH. The Ka = 1.8*10^-5. what is the pH of the solution? a) 7.00 b) 9.22 c) 4.77 d) 8.22 e) 5.78 I think that the answer is d. Would i be safe in saying that?

299. ## Chemistry

0.200 moles of NaF are added to 1L 2.0 molar HF. The Ka = 7.2*10^-4. What is the pH? a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00 I got 4.14. pH = -log(Ka)-log([NaF]/[HF]) ==> pH = -log(7.2*10^-4)-log(.2/2) ==> pH = 4.14 Or did I do something wrong?

300. ## physics

A uranium nucleus 238U may stay in one piece for billions of years, but sooner or later it de- cays into an particle of mass 6.64×10−27 kg and 234Th nucleus of mass 3.88 × 10−25 kg, and the decay process itself is extremely fast (it takes about

an auditor wishes to test the assumption that the mean value of all accounts receivable in a given firm is $260.00. She will reject this claim on ly if it is clearly contradicted by the sample mean. the sample deviation of 36 accounts is$43, the sample