# Questions Asked onOctober 6, 2010

1. ## Math

Betsy, a recent retiree, requires $6,000 per year in extra income. She has$60,000 to invest and can invest in B-rated bonds paying 13% per year or in a certificate of deposit (CD) paying 3% per year. How much money should be invested in each to realize

2. ## chemistry/thermochem

The bond enthalpy of F2(g) is 156.9 kJ/mol. Calculate ÄH°f for F(g). 1 kJ/mol

3. ## Physics

An object is being acted upon by three forces and moves with a constant velocity. One force is 60N along the x-axis, the second force is 75N along a direction making a counterclockwise angle of 150 degrees with the x-axis. What is the direction of the

4. ## Chemistry

I found the following procedure to prepare starch indicator solution on a website:- To prepare starch indicator solution, add 1 gram of starch (either corn or potato) into 10 mL of distilled water, shake well, and pour into 100 mL of boiling, distilled

5. ## math

points a,b,c,and d lie on a straight line in the given order. AC = 25 cm and BD = 46 cm. The ratio of length CD to AB is 5/2. Find the length of line segment BC in cm. sorry miss the CD part

6. ## Gen Chem 1

A tanker truck carrying 2.01×10^3kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuic acid is 95.0% H2SO4 by mass and has a density of 1.84g/L. Sodium Carbonate (Na2CO3)is used to neutralize the the sulfuric acid spill. How

7. ## Physics

The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book

It is greater than 7 tens and less than 8 tens. the number has 4 ones. write the number word

what do you call someone who cant turn pancakes?

10. ## chemistry

the molar mass of a newly synthesized jluorocarbon was measured in a gas microbalance, This device consists of a gkass bulb forming one end of a beam, the whole surrouned by a closed container. The beam is pivoted and the balance point is attained by

11. ## Chemistry

CO+H2O CO2+H2 kp=0.0611 atm @2000K A reaction mixture initially contains a CO partial pressure of 1334 torr and H2O partial pressure of 1778 torr at 2000K. Whats the partial pressure of CO2 and H2? I got 381 torr for both, but its not correct.

12. ## science physics

Two locomotives approach each other on parallel tracks. Each has a speed of v = 95 km/h with respect to the ground. If they are initially d = 7.5 km apart, how long will it be before they reach each other?

13. ## Writing Sentences and Paragraphs

Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe

14. ## chemistry

part B. would you expect the emissions to vary if metal flourides were used rather than metal chlorides?

15. ## Physics

The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book

16. ## MATHS

How many minutes before 12 noon is it, if one hour ago it was three times as many minutes after 8 am? Thank you

17. ## Physics

A merry-go-round is at rest before a child pushes it so that it rotates with a constant angular acceleration for 38.0 s. When the child stops pushing, the merry-go-round is rotating at 1.20 rad/s. How many revolutions did the child make around the

18. ## psychology

Did you ever have a "déjà vu" experience?do you think they really happen to people? How do you explain such experiences? What do you think of the idea of "déjà vu"?

19. ## Geometry

If the measures of two complementary angles are in the ratio 1:5, the measure of the larger angle is: A)75 B)144 C)150 D)72

20. ## bus stats

60% of households have internet, what is the probability that 3 randomly selected households will have internet?

21. ## US History

The question is "How might Juan Cabrillo's explorations affect later settlements in CA?" In the book there's only a little sentence talking about him.. "Cabrillo sailed 1,200 miles along the coast of what is now California. Cabrillo failed to find wealth,

22. ## I NEED HELP REALLY BAD!

ok so your sister buys a pencil as .39 cents. And a notebook (1) for 1.19$. the total cost was 3.92$. how many pencils did she buy? show work, but i don't know how. our teacher help us with word prblems.

23. ## Math

Sheila's age is two years more than twice Nicole's age. The sum of their ages is the same as Steven's age. If Steven's age is ten years less than five times Nicole's age, ,find the age of each. Write a verbal model!

24. ## chemistry

From data below, calculate the total heat (J) needed to convert 0.298 mol of gaseous ethanol (C2H6O) at 401°C and 1 atm to liquid ethanol at 25.0°C and 1 atm.

25. ## Physics

An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous speed at the end of 10.0 s of flight? What is its average speed up to that moment? How high has it risen? What is its instantaneous

26. ## algebra

An equivalent expression of h+zx

27. ## physics

Romeo is tossing pebbles at Juliet's window and wants the pebbles to hit the window gently, with only a horizontal component to their velocity, as they hit the window. He is standing at the edge of a rose garden 4.5m below her window and 5.0m from the base

28. ## Science

A horse with a force of 50 N pulls a cart of wood a distance of 10 m. Calculate the amount of work done.

29. ## calculus

If f(x) = sec x, find f''(π/4).

73. ## chemistry

Suppose you put 50mL of water in the can instead of 100mL and heated it to 40 degrees instead of 20 degrees. In what ways, if any, would this afect the results of the experiment? What would happen if you used 200mL of water and heated it only 10 degrees?

74. ## chemistry

calculate the amount of solid NH4Cl to add to 50 mL of 1 M ammonia to form a mixture that has a pH of 9 assume no volume change in the solution

75. ## Math

hi guys! I was wondering how to do x6-18x2+8 divided by factor x2-4 I normally use synethetic division what else easier method should i use?

Think about the energy you use every day (running, eating, ...) Where have you seen heat energy being lost? Activity.... Heat lost through

77. ## chemistry

What is the relative mass ratio of 11.31g of pb and 6.64g of au when pb has 3 mols and au and 2?

78. ## algebra

If 8x+16=48 then what does x equal?

79. ## algebra

evaluate the fraction 3x+5x-6x+2x/x if x=6

80. ## math

Please need help on this Create an equation of a nonlinear function and provide two inputs for your classmates to evaluate. f(x)=10²+5 find f(2) and f(-2)

81. ## Chemistry

Is CaCl2 a solid or is it soluble? I know Ca is is insoluble...

82. ## AP World History

I am suppose to write a DBQ tomorrow on the Hans and Romans. My prompt states: analyze the Han and Roman attitudes towards Imperial Power and the State.

83. ## Maths

How must $59 be shared between Michael and Matthew so that Michael’s share is$4 less than twice Matthew’s share?

130. ## AP Chemistry

how do you balance a redox equation like: Bi(NO3)3 + Al + NaOH = Bi + NH3 + NaAlO2 ??

131. ## Chemistry

How would I determine the electronegativity of Ethanol?

132. ## math

thank you so much reny! but i was wonndering how can you factor x8-2x6+x5+x4-x3+x+1 by x3+1 THANK YOU SOOO MUCH!

133. ## precalculus

what is 15x^3-22x^2+8x

134. ## chem

why do different compound have different colours in their visible emissions?

135. ## Physics

A weight of 50.0 N is hung from the center of a stretched horizontal wire 10.0 meters long. It causes the wire to say 1.00m at its center. What is the force exerted by each half of the wire in supporting the weight?

136. ## English-Writeacher

Writeacher, I tried to make my composition more sophisticated by adding varied different words instead of repetetive ones. Can you please have a look at this. I really need this by 2:00 pm. I'll appreciate all the help you can give me, thanks.

137. ## Statistics

# Statistics - bobpursley, Wednesday, October 6, 2010 at 4:30pm second applet. Set mean to zero, std deviation to .8 oz check below enter shaded area .05 Notice the answer comes up 1.31 ounces. So the mean must be 5.3+1.31=6.61 Put that in for the mean,

138. ## college

A 26 loudspeaker is suspended 3.0 below the ceiling by two cables that are each 40 from vertical. What is the tension in the cables? help please!

139. ## algebra 1

5p+9c+p for c

140. ## eakin elementary

If the 80o angle is in standard position, find two positive coterminal angles and two negative coterminal angles.

141. ## math

could you use only the millions period to order 462,409,524, 463,409,524 and 463,562,391

142. ## physics

A bag of sand dropped by a would-be assassin from the roof of a building just misses Tough Tony, a gangster 2-m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.

143. ## algebra

m=-3 passing through p(3.5)

144. ## linear algebra

these equation are certain to have the solution x=y=0 for which values of c is there a whole line of solutions? cx+2y=0 2x+ay=0

145. ## statistics

How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when using a 95% confidence interval?

146. ## math

If you already know the mean and all her test scores but one, how can you find the missing tes score?

147. ## health

What are the limitstions of what an organizational chart communicates

For f(x) = 2x-3 and g(x)= 2x^2 find, a) (f + g)(x) = My answer is 2x^2 + 2x - 3. Is this correct? b) (f - g)(x) How would you do this? c) (f X g)(2) I do not know what to do since the 2 is there.

149. ## math

Question part Points Submissions 1 2 3 0/1 0/1 0/1 0/2 0/2 0/2 Total 0/3 Find three consecutive even integers such that four times the middle integer is equal to the sum of the first and third integers.

150. ## physics

how much heat is required to change 400g of ice at -20c into steam at 120c

deductive reasoning

152. ## Physics

A speedboat starts from rest and accelerates at +2.07 m/s2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of +0.523 m/s2. Following this, the boat accelerates at -1.55 m/s2 for 8.00 s. What is the

204. ## Algebra-Can you please check this Reiny

Can you check this: x^-3y^2/x^2y^-4 I think the answer is y^6/x^5 Thanks for explaining the other problem

205. ## English

I tried to correct the wrong sentences myself. Please, tell me if everything is ok. 1) Then, Marlow went into the broken-down hut and found an old book about seamanship with notes written in code. 2) He came to Africa with the intention of civilizating the

206. ## economics

P 2 3 4 5 6 7 8 9 10 11 12 13 14 QD 400 380 360 340 320 300 280 260 240 220 200 180 160 QS 40 80 120 160 200 240 280 320 360 400 440 480 520 Suppose the quota is lifted and a price ceiling of 11 is imposed. Find the new market price. How much will be

207. ## chemistry

How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5? I have followed the steps for a similar problem posted;I found x to 3.16e-4 mol/L but I'm having trouble converting it to grams.

208. ## Physics

A golf club contacts a ball for 0.15 s at angle to horizontal and the ball strikes ground distance from fairway. Initaila speed 25 m/s and angle of projection is 15 degrees Calculate time between ball leaving club and when it first touches ground range of

209. ## Chem

Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate. I know the equation is AgNO3(aq)+NaCl(aq)---->NaNO3(aq)+AgCl(s) Is Ag^+(aq)+ Cl^-(aq)--->AgCl(s) right?

210. ## AP Chemistry

How do I calculate orbital hybridization?

211. ## CHEM 111-O2

C57H104O6(l)+O2(g) CO2(g)+H20(g)

212. ## algebra

If n x 2 = 28, then what does n equal

213. ## Biology

Can someone please explain how enzymes work? I need to know the parts of one too.

214. ## management

With increasing globalization, how can organizations allocate scarce resources? where should I look for information?

215. ## science

I am trying to figure out how to teach young students, say 3rd/4th grade the six steps of the scientific method in a simplified way they would understand...Any ideas?? Any examples/and /or sites?? Thanks, jarrad

216. ## CHEM 111-O2

C57H104O6(l)+O2(g) CO2(g)+H20(g) THE COEFFICIENTS OF PEANUT COMBUSTION

217. ## Consumer affairs and business

”.Reflect on how you would work with a client to advise them on the importance of insurance to manage risk. How would you address their reluctance to spend money on premiums when they may never file a claim? Refer to course content in your reflection (If

218. ## Chemistry 1151

what is the pressure of a 0.85 Liter sample of Helium with a mass of 0.070 grams when it is at 5 degrees Celcius?

219. ## chemistry

when doing a flame test: the hydrated salt is overheated and the anhydrous salt thermally decompose, one product being a gas; will the reported value of x be too high, too low on the unaffected?

220. ## Math

What are good examples of functions with horizontal asymptotes of 5?

221. ## Chemistry 1151

How many oles of Neon are in a 25mL container at STP?

222. ## Chemistry 1151

i have been trying for a few hours now to solve this, but i missed tis day in class and my mind wont wrap around the concept. can someoneplease help?? How many moles of Neon are in a 25mL container at STP?

223. ## chem

what formula do you use to determine mass percent of water?

224. ## physics

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a constant speed v. The car

225. ## math

A population of primates in a certain jungle is doubling each year. Describe how the population increases in size as a function of time. Give some example values for this population over time. Is this a linear or exponential relationship?

226. ## math models

What is the classification for this polynomial? 4g^2h^4j^2+3g^6h^8 A. monomial B. binomial C. trinomial

227. ## chemistry

How many grams of HCOOH are needed to make 3.7 liters of aqueous solution of pH=3.5?

228. ## math

If 250,148,571 is the total population what percent is 136,800,000?

229. ## physics

One kilogram of water vapor at 200 kPa fills one side of a partitioned chamber. The right side is twice the volume of the left and is initially evacuated. Determine the pressure of the water after the partition has been removed and enough heat has been

230. ## math models

What is the classification for this polynomial? 4g^2h^4j^2+3g^6h^8 A. monomial B. binomial C. trinomial

231. ## physics

Find the center of mass of the three mass system given that m1 1.90 kg and m2 1.30 kg Specify relative to the center of the left mass "1.00 kg "

232. ## Physics

Water flows approx. 0 over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate the rate at which mechanical energy is transferred to the turbine blades, assuming 53% efficiency.

233. ## algebra

when dealing with corresponding proportional sides how do you figure out the following: a rectangle with 6.5m on side and 3.7m on base and the other rectangle is 4.0m base and e on side?

234. ## Math

Find the slope intercept form of the line with the following properties. Slope=4 containing the points (-2,-5) I know that slope intercept form is y=mx+b so the m is the slope which is 4 but now I get confused since they give me x any y values (-2,-5). Is

235. ## chem-follow up question to previous post

how do you calculate the molar mass?

236. ## Math

For f(x) = 2x-3 and g(x)= 2x^2 find, a) (f + g)(x) = My answer is 2x^2 + 2x - 3. Is this correct? b) (f - g)(x) How would you do this? c) (f X g)(2) I do not know what to do since the 2 is there. Determine whether the graph of the following equation is

237. ## calculus

Show that the function f(x)=4x^3−15x^2+9x+8 satisfies the three hypotheses of Rolle’s theorem on the interval [0,3]. Then find the values of c on the interval [0,3] that are guaranteed by Rolle’s theorem. Give your answer as a set of values, e.g.,

238. ## phy

A ball is thrown from the window of a high-rise building with an initial velocity of 6.1 m/s at an angle of 32 deg. below the horizontal. The bill strikes the ground 4.4 seconds after being thrown. Find the height from which the ball was thrown.

239. ## math

In an equilateral triangle, if the lengths of the three sides are 5x − 2, 6x − 10, and 4x + c, what are the values of x and c?

240. ## com/155

Review pp. 517–520. Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives. What is the most effective way to determine

241. ## calculus

Specify the region over which the following function f(x) is increasing and the region where it is decreasing. f(x)= √-x Your answer should be either open intervals or the empty set ϕ.

242. ## Calculus

A kicker is setting up for a field goal. The goal is 120 feet away and 10 feet high. The kicker can give an initial speed of 75 ft/s to the ball. What range of angles of elevation are possible to kick the ball so it passes over the goal?

243. ## calculus

Given the function g(x)= (3x) / (2+5x^2 ) find its region of increase and decrease. Give open intervals.

244. ## physics

A 3.0 m long, 2.2 kg rope is suspended from the ceiling. Graph the tension in the rope as a function of position along the rope, starting from the bottom.

245. ## calculus

Suppose the function f(x)=2x^3+ax^2+bx has a critical point at x=−1, for which f(−1)=−2. What is a, b?

246. ## calculus

Specify the region over which the following function f(x) is increasing and the region where it is decreasing. f(x)=(1) / |x|. Give your answer in open intervals.

247. ## physics

A man lifts a 2.7 kg stone vertically with his hand at a constant upward acceleration of 1.2 m/s2. What is the magnitude of the total force of the stone on the man's hand?

248. ## calculus

Find the minimum of the function f(x)= x^2 – ((54 ) / (x) ).

249. ## Chemistry

Phenylcarbinol is used in nasal sprays as a preseriative. A solution of 0.52g of the compound in 25.0g of water has a melting point of -0.36C. What is the molar mass of phenylcarbinol?

250. ## calculus

Try to find the value of a such that the function f(x)=asinx+ (1/3) sin3x gets its extremum points at the point x= (π / 3). Decide if it is maximum or minimum, and find it.

251. ## Com/155

Imagine you are expected to write a three-page paper. Design an organizational and time management plan to complete this paper. Keep in mind the paper requirements are to select a topic, write a thesis, write supporting material, and include a minimum of

252. ## language arts

First write one noun of each type below.then write as sentence using the nouns. underline all the nouns in your sentence. common and concrete__________________________________________________________. proper and concrete___________________. please help me

253. ## calculus

For the function f(x)= (√1−x) / ( √1+x) find: a. the regions of increase and decrease, b. the regions of concave up/down and where f(x) has an inflection point. c. The "regions" should be open intervals or the empty set ϕ

254. ## com/155

I received my first major credit card at the early age of eighteen. I was positively not ready for that responsibility. Shopping carelessly was not a wise decision. Within six month's, my credit was suffering tremendously. I had already reached my credit

255. ## Physics

I have 3 different questions. 1) Calculate the coefficient of kinetic friction if it takes a force of 64 Newtons to keep a 54 kilogram box of books sliding across any icy surface at a uniform speed. 2) A car weighing 14,000 Newtons rests on a 20.0 degree

256. ## PHYSIC

If a blue car drives 10km/h across the deck of an ocean liner that is traveling at 90km/h, what is the blue car's speed relative to the surface of the water when it drives toward the front of the ocean liner?

257. ## Physics

A) Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G. B) What is the density of the sun ? (The sun's radius is 6.96×108 m). Notice how it compares with the

What is the solution of 3 times the absolute value of x + 5

259. ## calculus

find h'(2) given that f(2) = -3, g(2) = 4, f'(2)= -2 and g'(2)= 7. A. h(x) = 5f(x) - 4g(x) B. h(x) = f(x)g(x) C. h(x) = f(x)/g(x) D. h(x) = g(x)/ 1+ f(x)

260. ## algebra

What is the answer to 7(d+5d) - 16d

261. ## Science

A boy walks a total distance of 210 km due North. His starting position is at 20 km and his final position is 34 km. If it takes him 3 hours and 20 minutes to make this trip, what is his total velocity? What is his speed?

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts for the graph of

263. ## calculus

find an equation of the tangent line to the curve y = x √x that is parallel to the line y = 1 + 3x.

264. ## Algebra

The profit from selling x pieces of handmade jewelry can be modeled by the equation P(x)=-x^2+130x-3000. What is the range of profitable orders (P(x)>0)?

265. ## geometry

The perimeter is 68. Find x,an,BC,AC.if ab is 2x+7,bc is 3x+5, and ac is 5x-4

266. ## geography

was the china's one child policy successful? need opinions thank you

267. ## Physics

An airplane flies due north at 250 km/h relative to the air. There is a wind blowing at 60 km/h to the northeast relative to the ground. What are the plane's speed and direction relative to the ground?

268. ## Physics

A powerboat heads due northwest at 11 m/s relative to the water across a river that flows due north at 5.9 m/s. What is the velocity (both magnitude and direction) of the motorboat relative to the shore?

269. ## Algebra1

What is the answer to 8-(-n)=1? I have tried to figure this out, and I can't.

270. ## Physics

An airplane flies due north at 145 km/h with respect to the air. There is a wind blowing at 65 km/h to the east relative to the ground. What is the plane's speed relative to the ground?

271. ## Chemistry - Help

fill in the blanks __________ is matter that has 2 or more different atoms put together.

question: I have fewer ones than tens. The value of my tens is 30. What two numbers can I be?

273. ## calculus

an 8ft 2 by 4 is leaning against a 10ft wall. THe lower end of the 2 by 4 is pulled away from the wall at the rate of 1ft/sec. How fast is the top of the 2 by 4 moving toward the ground (a) when it is 5 ft from the ground and (b) when it is 4 ft from the

274. ## General Psychology

what is the process of repeating information to oneself to keep it in short-term memory

294. ## Chemistry

If you had one gallon of concentrated hydrochloric acid (12 N) and added water to make dilute hydrochloric acid (6 N), how much dilute hydrochloric acid would you have?

295. ## English

Can anyone here tell me any of the stories you used to tell your kids of your past lifes? I need to write one for English, and my mom doesn't want to tell me one. I just need examples.. or maybe you guys can give me a story I can use? ^.^ Just a story you

296. ## analogies

dollar:cent;meter:_________

297. ## Chemistry

What volume of 0.5 N nitric acid would be required to completely neutralize 300 ml of 1.0 N sodium hydroxide?

298. ## geometry

In the figure below, B is the midpoint of , AB = 5x + 2, and AC = 12x – 2. What is the value of BC?

299. ## Chemistry

When titrating an acid with a base, a dilute solution of the base is used. When titrating a base with an acid, a dilute solution of acid is used. Why are these titrations done with dilute solutions?

1/6h=9

301. ## Algebra

Can someone pleas give me an example of a nonlinear function with 2 inputs? I have to provide 5 problems for class and have no idea where to begin or how to set up the problem.

A skateboarder, starting from rest, rolls down a 14.0-m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 20.5° with respect to

303. ## APC Chemistry

Please correct me if any wrong info is given Volume(cm3)Area (cm2)Thickness (cm) .20 cm3 100 cm2 0.02 cm .28 cm3 122 cm2 0.002 cm .24 cm3 144 cm2 0.016 cm .41 cm3 225 cm2 0.0182 cm If you had used a very crude balance that allowed only one significant

6+y=17

305. ## History

What would "stock market speculation" mean This is regarding the Great Depression

306. ## math

The population of bacteria in one cubic centimeter of the blood of a sick person has been modeled by the function P(t) = 115 t(0.88^t) where t is the time, in days, since the person became ill. Estimate how fast the population is changing 14 days after the

307. ## Math

Mrs. Jones had some white paint and some green paint, and a bunch of wooden cubes. Her class decided to paint the cubes by making each face either solid white or green. Juan painted his cube with all 6 faces white - Julie painted her cube solid green.

308. ## physics

what force is being applied to a meteor with a mass of 500 kg as it travels at a constant velocity of 5000 meters per second?

309. ## Chemistry

I need help calculating the partial pressure of H2 using the following information 0.028 g Mg with excess HCl which produced 31.0 mL of H2 gas. The gas was collected by water displacement in a 22 degrees Celsius water bath. The pressure was 746 mmHg.

310. ## Math

I need help in solving this: Problem #1 For f(x)=-6x3+10 find f(4) and f(-4) Problem #2 For g(x)=20-5x2 find f(1) and f(-1)

311. ## analogy

month:week:_______:month moon:lunar:sun:_________ snow:cold_______:sweet

312. ## science

what force is being applied to a meteor with a mass of 500 kg as it travels at a constant velocity of 5000 meters per second?

313. ## Physics

A sprinter explodes out of the starting block with an acceleration of +2.79 m/s2 , which she sustains for 1.65 s. Then her acceleration drops to zero for the rest of the race. What is her velocity at t = 1.65 s and at the end of the race?

314. ## Geography

How do the shores of Long Island differ from each other. The South Shore and he North Shore

315. ## math

A 270 in pipe is cut into twp pieces. One piece is twice eight time the length of the other. Find the lengths of the pieces.

316. ## physics

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 26 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 135 m), the block swings toward

317. ## Physics

A speedboat starts from rest and accelerates at +1.94 m/s2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of +0.515 m/s2. Following this, the boat accelerates at -1.58 m/s2 for 8.00 s. What is the

318. ## French

I've been given an article and some questions to answer. One of them is: "Au paragraphe deux que veulent dire les mots... a) enjeux b) nouvelle" I can't figure out what the question is asking me to do with those two words.

319. ## math

659 x 1357=1357 x n n=

320. ## math

3 3/4 YD= ? in A)60 B)45 C)120 D)135 i think it is d

321. ## math

how can i drop an egg 4 feet without breaking it

322. ## science

how much force is excerted by a 25kg rock rolling down a hill at 3 meters per second per second?

323. ## college

200- to 300-word response addressing the following questions: o What everyday changes, if any, might you make to increase the amount of energy expended in your day-to-day activities? o What types and amounts of exercise would work best for you? o Can the

324. ## Physics

You are driving to the grocery store at 14.8 m/s. You are 140.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.440 s and that your car brakes with constant acceleration. You are 133 m from the intersection when

325. ## french

do you use le,la,l',les for this question? Ou,est-------- ordinateur?

326. ## Education Theory and Practice

Name and discuss factors that describe teaching as a profession.

327. ## math 115

I am stuck with this problem can some let me know how to work this problem please help me The representative tells you that floor plan #1 sells for $300,000 and floor plan #2 sells for$200,000. She also mentions that all the available houses combined are

329. ## physis

if someone dropped a 2.13 kg cannon ball from the 57.3 m tower of pisa, how much did gravity do on the ball

330. ## statistics

what percent of all students had scores less than 820

331. ## Chemistry

How many milliliters of 0.230 M Na2S2O3 solution are needed to titrate 2.349 g of I2 according to the equation below? I2(aq)+2S2O3^2-(aq)->S4O6^2-(aq)+2I^1-(aq)

332. ## Chemistry

Solutions of silver nitrate and sodium chromate are mixed. What is the net ionic equation? I got: 2Ag(aq) + CrO4-2(aq) -> Ag2CrO4(s) is that right?

333. ## assessment of learning

When to use an identification type of test? Steps or guidelines in making an identification type of test. Thanks.

334. ## Psycology

Identify and explain various discipline psycology is related to.

335. ## algebra

if 10+5y=77 then what is y?

336. ## Science

What are the different forms of the same gene referred to as?

337. ## Statistics

The weight of a product is normally distributed with a standard deviation of .8 ounces. What should the average weight be if the production manager wants no more than 5% of the products to weigh more than 5.3 ounces?

338. ## math 115

I am stuck with this problem can some let me know how to work this problem please help me The representative tells you that floor plan #1 sells for $300,000 and floor plan #2 sells for$200,000. She also mentions that all the available houses combined are

339. ## biology

why is the process of mitosis and meiosis both important to living organism?

340. ## Chemistry

I did a lab for Organic Chemistry I did a simple distillation for an unknown and found that it boiled at 76 degrees. I also found out that the unknown was ethanol since we knew what the 4 possibilities were and mine was closest to ethanol. I also did a

341. ## biology

when would and organism need to undergo the process of mitosis and meiosis?

357. ## chemistry

Calculate the heat released when 3.10 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride. 1 kJ

358. ## chemistry

calculate the amount of solid NH4Cl to add to 50 mL of 1 M to form a mixture that has a pH of 9 assume no volume change in the solution

359. ## ochem

A student dissolved 30 mg of a crude unknown in 2 ml of 95% ethanol at room temperature. After chilling in an ice bath and washing crystal with small amount of ice-cold ethanol, she recovered 5mg. Why was the recovery so low?

(17-A)SQUARED=2209 SOLVE FOR A

361. ## chemistry

the boiling point of diphenyl ether is 259 degrees C. It dissolves many nonpolar compounds but it is a poor solvent for crystallization.Why?

362. ## Math

These questions that I have completed are on a test review for my exam and I would just like to know if they are correct. These are only a few of the questions, I have more that are just not complete yet. Thank You! 1) List the intercepts for the graph of

I NEED EXAMPLES OF ARCHIPELAGO

A rifle with a weight of 35 N fires a 4.0 g bullet with a speed of 250 m/s. (a) Find the recoil speed of the rifle. ___m/s (b) If a 700 N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. ___m/s

365. ## math

the lappans buy 3 large sandwich wraps to serve at a picnic. Nine people in all will be at the picnic. show 3 different ways to cut the sandwiches so that each person gets an equal share. Help please!!!

366. ## algebra

the number of boys is ten less than double the number of girls, if the total number of students is 38 how many boys and girls are in the class

367. ## math

my number is a multiple of 5, but doesnt end in 5, the prime factorization of my number is a string three numbers, two of the numbers in the prime factorization are the same, my number is bigger than the seventh square number

368. ## science

is the following definition of smog correct: Smog is a mixture of smoke and fog or a noxious mixture of air pollutants that can often be seen as a haze in the air.

369. ## Physics

For this problem, ignore air resistance. You are to fire a rifle that shoots a particular bullet at 460 m/s at a target that is 45.7 m away and level with the rifle. Assuming that the acceleration due to gravity is 9.80 m/s², how high above the target

370. ## chem

My liquid boiled at 96.29 F. It is odorless and transparent. It could be water with salt. Cant be sugar inside becuse that would cause water to boil above 212F/100C. Water boils at 212F. What is my liquid?

371. ## English

Write a note on the characterstic features of 'Hamlet' by william shakespeare.

372. ## Physics

A bag of sand dropped by a would-be assassin from the roof of a building just misses Tough Tony, a gangster 2-m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.