# Questions Asked onDecember 1, 2011

1. ## Chemistry

Explain how the calculated molarity of the potassium permanganate would be affected by each of the following experimental errors. In each case, you must also state if the calculated molarity is higher or lower than the actual morality. a) Some sodium

2. ## chemistry

which of the molecules listed below can form hydrogen bond? For wich of the molecules would dispersion forces be the only intermolecular force? Give reasons for answer. A.H2 B.NH3 C.HCl D.HF

At one time, Maple Leaf Village (which no longer exists) had North America’s largest Ferris wheel. The Ferris wheel had a diameter of 56 m, and one revolution took 2.5 min to complete. Riders could see Niagara Falls if they were higher than 50 m above

4. ## chemistry

calculate the hydronium ion concentration in an aqueous solution that contains 2.50x10^-6M in hydroxide solution

5. ## geometry

Write the equation for the vertical line that contains point E(8, 6).

6. ## Physics

The planet Krypton has a mass of 7.1 × 1023 kg and radius of 3.3 × 106 m. What is the acceleration of an object in free fall near the surface of Krypton? The gravita- tional constant is 6.6726 × 10−11 N · m2/kg2. Answer in units of m/s2

7. ## Physics

A satellite moves in a circular orbit around the Earth at a speed of 6.3 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. The value of the

8. ## chemistry

What mass of steam is required to release 4.36 × 105 kJ of heat energy on condensation? answer in unit of g.

9. ## calculus

Find the integral of x^3 + [(x^4)(tanx)] from -pi/4 to pi/4

10. ## Math

"A ship leaves port on a bearing of 34.0 degrees and travels 10.4 mi. The ship then turns due east and travels 4.6 mi. How far is the ship from port, and what is its bearing from port?" I would like to know how the actual steps in finding the answer

11. ## Physics

1.Two balls, each with a mass of 0.871 kg, exert a gravitational force of 8.23 × 10−11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6.673 × 10−11 Nm2/kg2. Answer in units of m I got .785 which is

12. ## Chemistry

3NO2 + H2O = 2HNO3 + NO How many grams of nitrogen dioxide are required to produce 5.89 x 10 to the 3rd power kg HNO3 in excess water?

13. ## Physics

A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.08 s. How much longer should the pendulum be made in order to increase its period by 0.31 s?

26. ## physics

A rocket weighs 2.0 X 107 N. Its engines exert a force of 2.5 X 107 N at liftoff. What is the rocket's acceleration when it lifts off?

114. ## chemistry

A 210 g iron bar is heated and then placed in 100. g of water in an insulated container. The water temperature increases from 21.2 °C to 53.3 °C. What was the initial temperature of the iron bar? (Specific heats: cFe = 0.449 J/gK; cwater = 4.184 J/gK)

115. ## Physics

Light shines through a single slit whose width is 1.12 mm. A diffraction pattern is formed on a screen located 4.0 m away. The distance between the middle central bright fringe and the second dark fringe is 4.0 mm. What is the wavelength of the light?

116. ## science

a bouncing ball of mass 200g leaves the ground with a kinetic energy of 10J a)if the ball rises vertically, calculate the maximum height it is likely to reach. b)in practice, the ball rarely reaches the maximum height. explain why this is so.

117. ## Calc

We are working on finding the intervals of convergence of power series in class. Why do we not have to test for the convergence of the endpoints for geometric series? They always seem to diverge. Is this a set rule when working with the geometric series

118. ## Calculus I

Find the exact area of the surface obtained by rotating the curve about the x-axis. y = sqrt(1+5x) from 1

119. ## Math

x+3y=1 -5x+4y=-24 Solve the linear system by using elimination

120. ## Ela Help!!!!!!!!!!!!!!!!!!!!!!!

what does Vegetarian - that's an old Indian word meaning lousy hunter mean?

121. ## social studies

during a group meeting when they are each reading a draft of their formal report, Madiha and Anne realize that sometimes they have the word "there" correctly and sometimes the word should be "their". They use their word processor's "find" feature to help

122. ## calculus

An object moves in such a manner that its velocity at time t is given by v(t) = t3 - 4t2 +3t At t = 0, it starts at position x = 0. During the interval [0, 4] what is the absolute distance moved?

123. ## algebra

bonnie is four years older than clyde. ten years she was twice his age. how old is bonnie?

124. ## algebra

find the average rate of change from (2,1) to (8,5) for f(x)=(4x^(2)-2x)/(6x)

125. ## math

suppose the diameter of a circle has length d. the length of a chord is c and the length of the arc cut off by the cord is s. express sin(s/d) in terms of c and d

126. ## English

I urgently need you to check these sentences. Thank you. 1) I'm angry/annoyed/upset(?)/ furious with him for arriving late. I'm angry/upset about his behavior in class. I'm fed up with his behavior. 2) I'm dissatisfied/satisfied with my exam result. 3) I'm

127. ## statistics

How do we compute sample size fluctuations? Suppose we have a population of 16000 and a sample size of 30, and the number of samples 1000, what will be the impact on population mean and standard deviation when the population is normally distributed? When

What are the three elements of customer service, and how are they important to CRM?

129. ## Science 7R (Lab questions)

We did a lab today at science and for homework we have to answer questions about the Lab. I need help on 2. 12. Name two ways that a plant and animal cells differ in structure? 13. How are plant and animal cells different in function? She said that we have

z/7=1/21

131. ## Chemistry 1010

Describe exactly how you would make 150.0g of a 4.00% (w/w) solution of NaBr in water ?

132. ## math

The number 33 bus arrives at the corner of Coldspring and Hillen every 15 minutes. The number 40 bus arrives at the same corner every 46 minutes. If both buses leave the corner at 9:08 am, when is the next time the buses arrive at the corner at the same

133. ## intro to comp

Which type of memory can only be read and not written to? (Points: 5) Volatile RAM PROM FLASH I think its RAM

134. ## into to comp

Which of the following is a common standard interface for hard drives? (Points: 5) API EIDE SCSI USB is it D What is the interface between a hard disk and the CPU? (Points: 5) BIOS filter Controller Interface mechanism Small Computer Interface Is it

135. ## pre cal

Is the given function linear or nonlinear. If linear determine the slope. x y = f(x) 1 -2 -2 -14 3 8 4 4 -6 1

136. ## physics

A toboggan of mass 8.4 is moving horizontally at 18 . As it passes under a tree, 18 of snow drop onto it. We're covering Momentum and collisions, and I have no idea where to start here.

137. ## chemistry

An analytical chemist determines that an unknown sample contains 0.3452 mol of LiCl. How many atoms of chlorine does this sample contain?

138. ## statistics question

if i have x^2 = 15.505 and 9 degrees of freedom and a significance level of .10 how do i figure out the p value on my calculator?

139. ## math

How you can use a hundred chart to subtract 12 from 46

140. ## English

Sorry, I included the wrong post. I still have a few doubts on the following sentences. 1) The traffic isn't very heavy. 2) A security officer will control (check?) you for metal. 3) Get on the plane (not in), find your seat and wait for your flight

141. ## social studies

"It is the case that good communicators advance more quickly in the company." Which of the following would be the best revision of this sentence? "It is the case that good communicators advance faster in the company." "It is true that good communicators

142. ## English

Could someone explain to me why the word "like" is plural and not singular because I actually thought "like" was singular. And isn't "the girls" singular? "the girls like the movie"

143. ## math

Marnie collects red, blue and purple buttons. At the beginning of the year she has 360 buttons in a box. The ratio of red buttons to blue buttons is 4:3 and there are twice as many red buttons as purple buttons. a.What is the ratio of blue buttons to

144. ## To Laruen ~

Please do not use all-caps when you type or umpteen thousand exclamation marks or question marks. Those kinds of actions indicate to us that you have no patience or online manners. Please don't continue doing those things. You may end up putting yourself

145. ## Math

solve 10x^4-11x^2+3=0

146. ## geometry

sam walkded15ft. up a ramp and discovered he was 9 ft above the ground. pam walked an additional 20ft up the ramp. how far above the ground is she?

147. ## Math

Jamie is a quality control specialist. He is required to check 180 rubber balls out of a shipment of 18,000for defects. He finds that 3 are defective. Of the balls in the bin, he predicts there will be 300 balls defective. What percent if the rubber balls

148. ## calculus

What is the area under each of the given curves? y=e^x/2 ; x=0 x=1

149. ## simplest form

write each fraction in simplest form 1) 24/32 = 3/4 2) 18/27 = 2/3 3) 33/39 = 11/13 4) 8/18 - 4/9 5) 16/28 = 4/7 6) 21/28 = 21/28 7) 18/30 = 3/5 8) 25/35 = 5/7 ARE THESE Correct?

150. ## physics

A 2.40- bullet embeds itself in a 1.20- block, which is attached to a spring of force constant 770 .

151. ## algebra

given the following quadratic equation, determine if it has a maximum or a minimum value. Then find the maximum or minimum value f(x) - -11x^2 - 2x - 7

152. ## chemistry

a lab experiment calls for 10% acetic acid solution. The lab has only 5% and 15% acetic solutions available. How much of each should be mixed to obtain 10 liters of a 10% solution?

153. ## statistics

minnie went to union high school while mickey went to southern high school. both schools have equally challenging classes, class size, grading policies, etc. the one difference is in their year end tests. the union high test is out of 100 points, whereas

154. ## convert derivatives of x,y,z, to r, Ɵ,z

convert derivatives of x,y,z, to r, Ɵ,z with chain rule? I want provment rules of converting rectangular derivatives to cylindrical derivatives and and also cylindrical to spherical.I know the rules but I cant prove EQUATIONS.thx alot

155. ## algebra

Darla is building a new deask. to make sure she had made a square corner, she measures 4ft. from the corner along one edge and 6ft from the corner long the othe edge . how long should the diaonal be between those two points if the corner is a right angle?

156. ## chemistry

The radius of an atom is about 10,000 times as large as its nucleus. If the atom were enlarged such that the radius of its nucleus was 1 inch, what would be the radius of the atom in meters? I need the formula to follow so that I can solve this problem.

please check if I answered these questions correctly-they had to be in the past tense-not sure what number 6 is asking 1.¿Comó te sentiste ayer? Me sentí muy bien ayer. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama ayer? Mi mama fue a

158. ## math

Emily sara and Samantha share 540 beads. em took 90, sara took 3 tiems as many as the total number if beads emily and samantha took. How many beads must sara give to samantha so that both receive the same number of beads?

159. ## Physics 12

An alpha particle is accelerated by a voltage of 1.53*10^3 V and is then deflected by a magnetic field of strength 0.020 T into a circular path of radius 0.40 m. If the alpha particles have a charge of 3.2*10^-19 C, what is their mass?

160. ## physics

A desk weighing 80 N rests on the floor. The coefficient of friction between the floor and the desk is 0.25. What is the frictional force between yhe desk and the surface of the floor?

161. ## English 7 Essay: Rosa Parks (Ms. Sue)

Ms. Sue can you check my essay is it good. Btw we did the conclusion today at class (last paragraph). I did the mistakes I made yesterday (that you told me to change). Rosa Parks A person's characteristics are shaped by the setting and beliefs of society

162. ## calculus

A spring exerts a force of 4x lbs when it is compressed a distance of x feet. How much work is required to compress the spring a distance of one inch?

163. ## chemistry

Which is not a true statement concerning electromagnetic radiation? It travels through space at 3.0 x 1010 cm/s. It travels in a straight line. It has the fastest speed possible in nature. The sun is a source of it.

164. ## calculus

An object moves in such a manner that its velocity at time t is given by v(t) = t3 - 4t2 + 3t At t = 0, it starts at position x = 0. During the interval [0, 4] what is the net distance moved?

165. ## Chem 101

At 600degrees Celcius, gaseous CO and Cl2 are mixed together in a 1.00 L closed container. At the instant they are mixed, their concentrations are CO=.25 mol/L and Cl2= .69 mol/L. After equilibrium is established, their concentrations are CO= .25 mol/L and

166. ## algebra

How do you determine whether/how many nonreal solutions an equation has? The statement: x^3 - 4x^2 - 3x + 2 = 0 has two nonreal solutions is false How do I solve this?

2sin2x+1=0

169. ## computer programming

write a program that can read 10 interger values into an array and find the total for that array in the program , write 3 fiunctions: a function to read values , a function to find the total of element value and a function to print value

170. ## Criminal Justice

How does a prosecutor determine which cases to pursue?

171. ## Outside of School (question)

What kind of activities I can do outside of school????? Pleas list if you have any ideas. Thank YOU! :)

172. ## algebra

how can i solve the inequality x+9>12 do i subtract -9 from both sides?

173. ## English

Tom and Phyllis said they would pay our dog's boarding costs. What is the subordinate clause? Is it our dog's boarding costs

174. ## Math

In a flower box there are nine red flowers and six white flowers. There are three times as many yellow flowers as white ones. How many flowers are there in all?

175. ## math

Find the following 12 square root symbol (-6)12

176. ## science

What are vesicles?

177. ## chem

what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst.

178. ## STATISTICS QUESTION

if i have x^2 = 20.303 with 9 degrees of freedom and a significance level of .05 how do i figure out the P-value and by X^2 i mean chi square

179. ## science

what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst

180. ## Grammar

Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a

181. ## chemistry

20 g of CO2 is placed in 0.75l Bottle and sealed. what is the pressure in the bottle if the temp is 25C?

182. ## Math

Jamie is a quality control specialist. He is required to check 180 rubber balls out of a shipment of 18,000for defects. He finds that 3 are defective. Of the balls in the bin, he predicts there will be 300 balls defective. What percent if the rubber balls

183. ## math

18a^3 + 30a^2 / 3a

The salesperson in medication ads dresses to look like a doctor because: a. she has tested the product directly. b. the product was developed by physicians. c. FCC regulations demand this. d. the salesperson's credibility is enhanced. I think it is b but I

185. ## physics

What is the downward force on a ball with a mass of 7.5 x 10^-1 kg thrown in the air due to gravity?

186. ## calculus

what is the exact area of f(x)= 4x+5 from x=1 to x=4 using the limit of an infinite sum method.

187. ## calculus

Find the center of mass of the region bounded by the curve y = x3 - 4x2 +3x ; the x-axis ; x = 0 ; x = 1

188. ## geometry

The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in

189. ## math (Ms.Sue)

Bella planted 7 marigolds in each of the 8 rows in her garden.Then she planted 2 tulips in each of the rows.If she bought 60 marigolds in all,does she have any remaining?If so,how many? My Solution: 7*8=56 60-56=4 4 is my answer am i right?

190. ## logic

Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional

Hi I posted early and got a response but the correction suggested can't be corret. Could someone please check these answers-I had to answer in past tense-- Could some one please check these-I had to answer them in the past tense which is still confusing

192. ## Calculus

Let R be the region bounded by the x-axis, x = 5 and the curve y = x. This region is rotated around the x-axis. Find the volume of the resulting solid. (Note: R is a triangular region. The resulting solid has a simple shape. You may ask me if you are

193. ## Calculus

Let R be the square region bounded by y = 2, x = 2, and the x and y-axes. When R is rotated about the x-axis, what is the volume of the resulting solid? What is the volume of the solid generated by rotating R about the y-axis?

Could some one please check these-I had to answer them in the past tense which is still confusing me-I think most of them are correct-Thank you 1.¿Comó te sentiste ayer? Yo sentí muy bien. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama

195. ## Environmental Science

the Nitrogen, carbon, phosphorous cycles roll in the tundra

214. ## CHEMISTRY

DETERMINE THE NUMERICAL VALUE OF KEQ. A) 2HI(g)--------H2(g) +I2(g) Where [HI]=0.27m,[H2]=0.86M and [I2]=0.86M at 200c

215. ## English

In the sentence, Shenika looks tired,what part of speech is tired?

216. ## math

Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional

217. ## intro to comp

What is the set of instructions the computer uses to boot up called? (Points: 5) BIOS BOOT POST SETUP im confused i don't know the answer to this one

218. ## chemistry

assume you had a solution that contained a mixture of a silver ions and stronium ions. come up with three different reaction plans that would allow you to precipitat either the silver ion or strontium ion, but the other ion would remain in solution

219. ## Alg. 2

Hello so I'm suppose to Determine whether the given binoial is a factor of the polymonial P(x) and here's the question (2x-4); P(x)=2x5-4x4+2x2-2x-4 I keep going over and over it and end up with ridiculous numbers -_- please help! thank you

221. ## algebra

For the polynomial below list each real zero and its multiplicity. f(x) = (x + 1/1)^4 (x^2 + x)^5 Really need some help with this! Have worked it twice and got two different answers!

222. ## Physics

A square pool with 180-m-long sides is created in a concrete parking lot. The walls are concrete 52.9 cm thick and have a density of 2.50 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.515. What is the maximum possible

223. ## English

I left out the following adjectives. 1)I'm cheerful about (I can't find an example). 2) She was depressed about the hard wprk.

224. ## government

Why does the electoral college not allow citizens living in U.S. territories to vote, as it is the only place in the universe (astronauts have voted) that U.S. citizens can't vote.

225. ## statistics

A set of data is normally distributed with a mean of 98 and a standard deviation of 15. What is the probability that the value from the data is less than 88 ?

226. ## physics

A 40 N force is applied to pull the desk horizontally to the right. What is the magnitude (the net force or the total force) acting on the deak ?

227. ## Math

perform the indicated operations and simplify x-5/x-7-x-1/x+7+x-35/x^2-49

228. ## calculus

An annuity has a differential equation of y'=4500+.035y, and an initial condition of y(0)=1000. Describe what is going on.

229. ## sociology

From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the

230. ## media and american culture

Do you think the Internet has created more harm than good to artists in the music industry? Explain your answer.

231. ## college algebra

I think this is an exponential equation. I can not figure out how to put the equation into the TI-84 to get the approximate form 3/5 ln(5x-1)+1 =1.4 subtract 1 from sides and divide by 3/5 lh(5x-1)=0.6667 Put in logarithm form e^0.6667=5x-1 add 1 to both

Which of the following is NOT a question you need to answer to choose a persuasive strategy ? What do you want readers to do ? What points will the audience agree with ? How strong a case can you make ? What kind of persuasion does your organization value

233. ## Physics

A 5 meter diameter telescope is used to observe binary star systems. What is the minimum separation distance (perpendicular to the line of sight) for which the two stars can be resolved if they are at a distance of 1,000 light years = 10 m and they are

234. ## Physics

A 3.0 cmm high object is placed 10 cm from a concave mirror whose radius of curvature is 10 cm. Where is the image located?

235. ## american history

I must provide a historical overview of the evolution of U.S. cities from colonial times to the present. could you please provide me with a starting point and some web resources. thanks.

Is 1,725+346 more or less than 2,000? Explain how you can tell without actually adding.

237. ## english

Do I need a comma after the word book and does the sentence sound alright? When I first saw the title of the book I knew the theme would pertain to the importance of one’s identity.

238. ## ICD-9-CM

Can you please help me code this correctly. Cataract due to type I diabetes. The question calls for two codes. I am really struggling with this course. Thank you.

239. ## US Gov

Using the buddy system, an agency can circumvent the usual OPM search process by: a. asking the president to appoint a specific candidate. b. blanketing in a job candidate. c. duplicating positions. d. issuing a merit dispensation. e. issuing a name

240. ## education

How do media writers influence society?

241. ## scientist

How could measuring the orbit of a comet help scientists understand when it will next be visible from earth

242. ## English

I have started on my initial draft and turning it into an essay. Like I said before it is about Banning cellphones while texting/driving and my main objective is that the device serves as a distraction leading to consequences.. We have to use research

243. ## English

Thank you very much. I left out the following sentences. 1) I like everything in (of) the place where I live. My town is famous for its wines and truffles among other things. 2) There are a lot of sports facilities:tennis courts, a football pitch (ground?)

244. ## physics

Find the speed of a sleigh sliding 326 feet in 22 seconds.

245. ## writing

Do you have any tips for writing an opinion paper?

246. ## algebra

can you place 44 coins in 10 containers evenly and not have the same amount of coins in each container

247. ## Math

What adds up to get 100%? 68% , 1/2 , 60% ,1/20 , 1% , 0.9 , 0.04 ,13/20 , 1/7 , 3/25 ,16% ,55% , 0.02 , 1/9 , 0.15 , 1/8 , 24% , 0.44 , 0.06 , 1/6 , 1/4 , 29% , 0.037 , 1/3 , 19% , 17/50

248. ## Calculus

what happens when the limit goes to infinity 4x-6sqrt(x)

249. ## chemistry

A student used 6.3 x 10^3 J to heat up 50.0g of porcelain from 25.0 degrees Celcius to 45.0 degrees Celcius. What is the specific heat of porcelain?

250. ## chemistry

How much of the water (in grams or mL) is consumed to produce 15 mL of the H2 gas? Use PV = nRT ; assume T = 298K, P = 1 atm

251. ## Alg2

what are the # of possibilities of buying 2 CD's from 10 that are on sale?

252. ## physics

Help me with this problem i do not get it? A light wave can travel the earth to the moon in 1.3 s. the distance to the moon is 384,790 km. how long would it take a sound wave to travel the same distance at 343 m/s? state you answer in days. I got 2 days

253. ## Intro to comp

What unit of measure is used to determine the performance of a CPU? (Points: 5) Bits per second Cycles per second Hertz Instructions per second Is it D

254. ## Physics

john and Sarah participated in a roller skating show. while 75kg john skated backwards at 3.00m/s, 60kg Sarah jumped into his arms with a velocity of 5m/s in the same direction. a. how fast did the pair roll backwards together? b. if john instead skated

255. ## Science

A ball bounces up 28 centimeters after being dropped from a height of 2 meters. What percent of the potential energy is converted into kinetic energy on the bounce?

256. ## calculus(QUICK QQUESTION!!)

if f(t) were continious on the interval [-2,1] but youo were only given the function for t=-2,-3/2,-1,-1/2 ..,3/2 and 2, explain how would you apporximate f'(1)

257. ## geography

true or false? Peru's landform make easy to travel from one part of the country to another

258. ## physics

Water in a cylindrical container is hanging by a rod from the ceiling at point O shown in the figure. The container is initially full, and initially displaced 20 degree . There is a hole in the bottom where water pours out and the top of the container is

259. ## maths

use the inverse method to solve the system of linear equations -x +3y+2=1 2x+5y=3 3x+y-2z=-2

260. ## Geology

I need to write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of metamorphic rocks. Can someone help me get started with this and on the right track? Thanks

261. ## English

Ms. Sue I just cannot figure what the subordinate clause would be in this sentence, Tom and Phyllis said they would pay our dog's boarding costs. Is it "said they"

262. ## grammar

Can you check this sentence, please? I know a little about helping injured and sick animals from volunteering at the social shelter. I look forward to learning more in school about how to treat animals.

describe the rate at which chemical weathering generally takes place.

x+100=50

266. ## media and american culture

Do you think the Internet has created more harm than good to artists in the music industry? Explain your answer.

8r-23=-7

268. ## arithmetic

if V(X)=3 then find 1)V(X+10) 2)V(X-3) 3)V(5X) 4)V(2X+3)

269. ## Question

What is a High School Diploma???? I'm really curious.

270. ## chemistry

how many gram of uranium will radiate the equivelent energy output of a major earthquake measuring 10^19J? Energy from fission of uranimu 223 is 10^-12.

271. ## Math

Find the equation of the diameter of the circle x^2+y^2-6x+2y=15, which, when produced, passes through the point (8,-2).

272. ## algebra

what's the percent increase in the sales from 2.08 million to 16.3 million?

273. ## Chemistry

what is the concentration of a weak acid with a pH of 3.25, if the Ka of the weak acid is 1.6 x 10^-7 ?

274. ## math

Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional

275. ## algebra

16 times 3 over 4 what doe sit equal with it simplify

276. ## arithmetic

find the whole to 565 tires 12.4%what numbers of tires.

277. ## Geology

I need to write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of igneous rocks. Can someone help me get started with this and on the right track? Thanks

278. ## math

how do i write 3474.8 in scientific notation

279. ## Math

i go to college and it take 40 to 45 gallon every monthto go to college, some time cost of the gallon varies 2.96 to 3.61 /gallon . what would be my weakly cost to drive college. please answer . i come up with 21 dolor.Am i right or miss some thing .

280. ## Physics

A radio set at a sound level of 20 dB is suddenly increased to 80 dB. how many more time greater is the pressure amplitude at 80 dB? I do not know what to do please help

281. ## Social Studies

What was the month day and year that the Townshend Acts happened?

282. ## us history

What was Scott Joplin most known for duirng the 1920's? please do not just give me a url to a site with his biography because i have already looked at many! I am trying to narrow my answer down to 3 sentences. thanks!

283. ## Social Studies

In what country were the first assistance dogs developed in the 1920s as guide dogs for veterans who lost their sight during World War 1?

284. ## science

Magnetisim is a type of

285. ## networking

I need help on how to design a boardroom in which any department's information can be accessed and expressed

3x+17=32

287. ## spanish

how do you say, "what subjects are at your school.?"

288. ## college algenra

it a log problem? e^x=87

289. ## arrays an expanded algorithm

I need an example to help my son like 23x17

290. ## statistics

130dan72 Ã§Ä±k

291. ## algebra

how do i solve x+9>12?

292. ## Science

Give an example that explains each below. a- *answered* b- fluids exert pressure

293. ## geometry

in triangle FSH, angle f is 58 degrees and angle s is 64 degrees. in triangle LVQ, angle v is 64 degrees and angle q is 48 degrees are the two triangles similar?

294. ## biology

how many poeple prefer batteries than plugging a cable on the wall and why?

295. ## math

18a^3 + 30a^2 / 3a

296. ## Math

What is a3-1=? The 3 post to be on top of the a a little bit

297. ## Math

what does cos x = 0.418? On the interval (0,2pi)

x/8=+11

300. ## writing

what are the persuasive techinques in writing such as bandwagon and testimonal and what do they mean?

301. ## variation

IF arithmetic mean is 10 and V(X)=4 find mean and standard deviation of z where Z=5x+4

302. ## spelling

the book says circle the vowel spellings coin would be oi house - oue or is therw something i am missing

303. ## Math

Add Simplify if possible 9x/x^2-4 + x/x-2

304. ## English

I urgently need you to check these sentences. 1) Tourists spend their holiday in bed and breakfasts and go to restaurants. 2) I like the countryside because the air is cleaner and the atmosphere is quieter.There is always something to do, like going for a

305. ## math

(6c+3d)(7c-2d) how do i do this?

4x+5=17