Tuesday

September 30, 2014

September 30, 2014

Total # Posts: 71,456

**statistics**

lj
*September 15, 2014*

**Physics **

A block of mass m is given an initial speed of v along a horizontal frictional track. It travels a distance d and comes to a rest. the coefficient of kinetic friction between the block and the track is ....
*September 15, 2014*

**Math (Ms. Sue! Anyone!)**

addition
*September 15, 2014*

**Math (Ms. Sue! Anyone!)**

1)At 1 p.m., Lin records an outside temperature of –14.8°F. At 3 p.m... she records the outside temperature and notices the temperature had increased by 22.6 degrees. What was the temperature that she recorded at 3 p.m.? ( no multiple choice) *confused on this ...
*September 15, 2014*

**French**

Thanks! Do I close the letter in the same manner as English? Ex. Amicalement, *My name*
*September 15, 2014*

**French**

In an informal letter, is writing just Bonjour! or Salut! without a name acceptable?
*September 15, 2014*

**Algebra1**

3(x+1) = -2(x-1)-4 3x + 3 = -2x + 2 - 4 3x + 3 = -2x - 2 Can you solve it now?
*September 15, 2014*

**math**

1)At 1 p.m., Lin records an outside temperature of –14.8°F. At 3 p.m... she records the outside temperature and notices the temperature had increased by 22.6 degrees. What was the temperature that she recorded at 3 p.m.? ( no multiple choice) *confused on this ...
*September 15, 2014*

**pre-calculus**

At a selling price of $ 54 , a lamp company breaks even on total sales of $ 3564 . If the company's overhead is $ 396 , find the marginal production cost per lamp and find the profit on sales of 145 lamps.
*September 15, 2014*

**accounting**

Wallace Inc., a developer of radiology equipment, has stock outstanding as follows: 30,000 shares of cumulative preferred 2% stock, $90 par and 125,000 shares of $10 par common. During its first four years of operations, the following amounts were distributed as dividends: ...
*September 15, 2014*

**French**

How do you say which country are you from in French informally?
*September 15, 2014*

**counting**

My daughter home work wants her to count the animals in each picture and draw the correct number of counters to show how many
*September 15, 2014*

**Math**

A ramp long rises to a platform. The bottom of the platform is from the foot of the ramp. Find , the angle of elevation of the ramp. Round your answer to the nearest tenth of a degree.
*September 15, 2014*

**5th grade math**

55555555555555
*September 15, 2014*

**Biology**

How are the hydrogen bonds broken during DNA replication? Is it done by the DNA polymerases?
*September 15, 2014*

**World history help**

What does the juror token tell us about Greeks justice system? Need help ASAP!!!
*September 15, 2014*

**math**

Why is 1 not a prime number?
*September 15, 2014*

**Engish (ESL)**

Verb - furnished Subject - material ???
*September 15, 2014*

**Engish (ESL)**

The bison's hide furnished material for Indian tepees and robes. What's the subject and the verb?
*September 15, 2014*

**History**

Which one?? Which three empires competed for influence in the Balkans? 1. Austria-Hungary 2. Russia 3. ? History - Sierra, Monday, September 15, 2014 at 4:32pm The third one would be Serbia. History - Ms. Sue, Monday, September 15, 2014 at 4:37pm You're wrong, Sierra. The ...
*September 15, 2014*

**Pre-Calculus/Trigonometry**

Am I right? Which of the following is the equation of a line that passes through the point (3,2) and is parallel to the y-axis? y = 3 x = 2 y = 2 x = 3 <---
*September 15, 2014*

**Pre-Calculus/Trigonometry**

oh okay thanks :)
*September 15, 2014*

**Pre-Calculus/Trigonometry**

okay, but i still dont understand on how to solve this
*September 15, 2014*

**Pre-Calculus/Trigonometry**

slope intercept form m= y2-y1/ x2-x1
*September 15, 2014*

**Pre-Calculus/Trigonometry**

the slopes will be the same?
*September 15, 2014*

**Pre-Calculus/Trigonometry**

Help please What is the slope of the line that passes through (1,0) and is parallel to y = 3x + 5?
*September 15, 2014*

**History**

Which three empires competed for influence in the Balkans? 1. Austria-Hungary 2. Russia 3. ?
*September 15, 2014*

**physics**

What is the ball's rebound speed on its first bounce?
*September 15, 2014*

**Math**

It's greater than 700 000 The sum of all it's digits is 14 It has no zeros The hundreds digit is 3
*September 15, 2014*

**Chemistry**

never mind it tells me that it is not right. I don't know what I am doing wrong. (6.626*10^-34)(3.00*10^8)/ (500*10^-9)= 3.98*10^-19 so 100/ 3.98*10^-19= 2.52*10^-18
*September 15, 2014*

**Chemistry**

2.52*10^-18??? is what I got
*September 15, 2014*

**Chemistry**

A 100-watt lightbulb radiates energy at a rate of 100 J/s (The watt, a unit of power, or energy over time, is defined as 1 J/s). If all of the light emitted has a wavelength of 500nm, how many photons are emitted per second? (Assume three significant figures in this calculation.)
*September 15, 2014*

**Chemistry**

I got 5.56*10^-45 which doesn't make sense?
*September 15, 2014*

**Chemistry**

A laser produces 15.0mW of light. In 3.00hr , the laser emits 4.53×1020 photons. What is the wavelength of the laser?
*September 15, 2014*

**Chemistry**

3.5^3
*September 15, 2014*

**Chemistry**

how would you find out the mass?
*September 15, 2014*

**Chemistry**

A proton in a linear accelerator has a de Broglie wavelength of 115pm. What is the speed of the proton?
*September 15, 2014*

**Chemistry**

9.5*10^4?
*September 15, 2014*

**Chemistry**

what is the mass of the electron?
*September 15, 2014*

**Chemistry**

An electron has an uncertainty in its position of 611pm. What is the uncertainty in its velocity?
*September 15, 2014*

**Organich Lab Help Please!!!!!!!!**

The second part of the question I found that aqueous phase is still the bottom layer based on the density of each. I just want to make sure I'm on the right track. Thanks!
*September 15, 2014*

**Organich Lab Help Please!!!!!!!!**

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml of water. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above mixture. ...
*September 15, 2014*

**Biology**

Are a replication fork and an origin of replication the same thing?
*September 15, 2014*

**7th grade math**

You should do 1/2 * 3/4, not the other way around.
*September 15, 2014*

**history**

4. The Puritans viewed themselves as creating A. an ideal Christian community to be copied by others B. a prestigious university for training ministers C. an English colony identical to the lifestyle in England D. a haven for persecuted religious minorities I think its A? The ...
*September 15, 2014*

**Math**

But if I plot f(x) = -3x + 5 and -f(x) = 3x - 5, it does not give me the reflection.
*September 15, 2014*

**Math**

If I want to reflect f(x) = -3x + 5 over the x-axis, would the new equation be f(x) = 3x - 5? Or is it -f(-x) = 3x - 5?
*September 15, 2014*

**history**

The established church in the Southern colonies was? the Anglican Church right? The most important cash crop in colonial Virginia was? tobacco right? Roger Williams believed wholeheartedly in A. extermination of all Native Americans B. complete separation of church and state C...
*September 15, 2014*

**history**

what was the puritan ultimate source of authority? it was the bible right?
*September 15, 2014*

**college algebra**

An executive invests $29,000, some at 8% and some at 4% annual interest. If he receives an annual return of $1,680, how much is invested at each rate?
*September 15, 2014*

**general knowledge**

How to write 9 september 2014 in 5 letters without using numbers..?
*September 15, 2014*

**Settlement**

One goal the French and Spanish colonists had in common in the New World was Answer developing the fur trade. establishing stable governments. converting the Native Americans. searching for gold and other precious metals.
*September 15, 2014*

**Organich Lab Help Please!!!!!!!!**

a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the top layer Ethylene...
*September 15, 2014*

**statistics**

AAA reports that the average age of a car on U.S. roads in recent years has risen to 7.5 years. Suppose that the distribution of the age of automobiles assumes a mound shaped distribution. If 99.7% of the ages are between 1 year and 14 years, what is the value of the standard ...
*September 14, 2014*

**Math**

How do you write the transformation of a quadratic function two units right from its parent function? Is it y = (x + 2)^2?
*September 14, 2014*

**Math**

A Social Security number has seven digits. How many Social Security numbers are possible?
*September 14, 2014*

**Math**

An exam consists of six true-or-false questions. Assuming that every question is answered, in how many different ways can a student complete the exam? In how many ways may the exam be completed if a penalty is imposed for each incorrect answer, so that a student may leave some...
*September 14, 2014*

**Quick math help**

An angle with a measure of 89.9 degrees... Would it be a right or an acute angle?
*September 14, 2014*

**physics**

While riding in a hot air balloon, which is steadily descending at a speed of 1.39 m/s, you accidentally drop your cell phone. (a) After 4.00 s, what is the speed of the cell phone? (b) How far is the cell phone below the balloon after this time? d = m (c) What are your ...
*September 14, 2014*

**Physics Help**

A crane is used to lift air conditioning units to the top of a 5-story building. Each story is 3.5 m high. The crane accelerates the units while lifting the units past the first story and then lifts them at a constant velocity past the second through fourth stories. it hen ...
*September 14, 2014*

**Chemistry Urgent Help and Check Please!**

a) You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the top layer Ethylene...
*September 14, 2014*

**Physics Help Urgent **

On a dare, you decide to try bungee jumping. You fall freely you are moving at 15 m/s downward. At that point the cord begins to stretch. The cord slows you to a stop as it stretches, then pulls you back upwards. When the cord is no longer pulling on you, you are moving ...
*September 14, 2014*

**physics**

At a point P, the electric field is 78 N/C at 51° counter-clockwise from the positive x axis. A particle of mass 4.7 kg and charge -0.11 C is located at P. Find the direction of the force on the particle: ___ degrees counter-clockwise from the positive x axis the direction...
*September 14, 2014*

**chemistry **

2 HI(g)--><--H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.248 M. Calculate the concentration of HI in the equilibrium mixture. M. Please help! I have no ...
*September 14, 2014*

**physics**

It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian rocks have come to Earth ...
*September 14, 2014*

**statistics**

You have just completed a round trip to New York and back by car. The one way distance traveled is 210 miles. If your average speed traveling to New York was 70 miles per hour and your average speed returning to Baltimore was 50 miles per hour (heavy traffic) what was your ...
*September 14, 2014*

**Geometry**

If you live in Australia ,then you have been surfing. Is it a true conditional statement?
*September 14, 2014*

**statistics**

You have just completed a round trip to New York and back by car. The one way distance traveled is 210 miles. If your average speed traveling to New York was 70 miles per hour and your average speed returning to Baltimore was 50 miles per hour (heavy traffic) what was your ...
*September 14, 2014*

**Physics Help**

On a dare, you decide to try bungee jumping. You fall freely you are moving at 15 m/s downward. At that point the cord begins to stretch. The cord slows you to a stop as it stretches, then pulls you back upwards. When the cord is no longer pulling on you, you are moving ...
*September 14, 2014*

**English help**

I need help coming up with a personal response to the story "The Stealing Thors Hammer." I don't know how to put it. It must have as comment, interpretation, evaluation etc.
*September 14, 2014*

**Physics**

A 47.0-g Super Ball traveling at 29.5 m/s bounces off a brick wall and rebounds at 15.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 5.00 ms, what is the magnitude of the average acceleration of the ball during this time interval?
*September 14, 2014*

**Organic Chem Help **

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. ----- Ethylchloride is less dense so it is the top layer Ethylene ...
*September 14, 2014*

**math**

(12^5)^3 = 12 ( I have to find the exponent) my answer is 15 for the exponent
*September 14, 2014*

**Math**

Use distributive property and simplify the expression. 4 + 2(3x - 1) + 9 - 6x + 15 - 5x + 14 - 3x + 14 - 6x + 11 *my answer* I wanna make sure my answer is right. 3.82e+7 (there is no multiple choice) my answer is 38200000
*September 14, 2014*

**Chemistry Urgent Help Please!**

If caffeine is soluble in hot benzene but insoluble in hot petroleum ether, how could you use this information to design a crystallization procedure?
*September 14, 2014*

**Math!**

1) What is the value of 19 + 5a^4 + 3b^2 when a = 2 and b = -4? (this is not a multiple choice question) but my answer is 147. 2)Combine the like terms to simplify the expression: 4 + 7xy^2 + 5y^3 + 10x -4xy^2 - 8x - 4y^3 + 9 - y^6 + 3x^2y^2 + 10x + 13 - y^3 + 3xy^2 + 2x + 13...
*September 14, 2014*

**physics**

Two cars A & B are coming closer to one another with speed 36 km/h and 72 km/h Separated by a distance 1500 m calculate : 1 . time interval after which two car meet . 2 . if acceleration of car A is 2m/s2 then calculate time interval after which car A & B Will meet. 3.if ...
*September 14, 2014*

**physics**

A train is moving parallel and adjacent to a highway with a constant speed of 24 m/s. Initially a car is 48 m behind the train, traveling in the same direction as the train at 35 m/s and accelerating at 3 m/s 2 . What is the speed of the car just as it passes the train?
*September 14, 2014*

**Chemistry Urgent Help Please!**

You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above mixture. Assuming the...
*September 14, 2014*

**Chemistry**

2.91*10^6?
*September 13, 2014*

**Chemistry**

What is the velocity of an electron that has a de Broglie wavelength approximately the length of a chemical bond? Assume this length to be 2.5×10−10m .
*September 13, 2014*

**Math**

What is the parent function of h(x) = -x^2? Is it h(x) = x^2 or h(x) = -x^2? How can I describe h(x) = -x^3 as a transformation of the parent function of a cubic function? Do I just say that it is a reflection, or is there a way of saying it with numbers, as in h(x) = x^3 - 4?
*September 13, 2014*

**math**

2.Calculate the growth rate of Asset J dividends, we have to assume that future dividend payments will grow at a constant rate into the future forever. This constant rate can be estimated by calculating the average growth rate from the past dividends. Calculate Asset J’s ...
*September 13, 2014*

**HISTORY**

9-10. Since almost all Native American tribes were ,_______________ much of our information on their culture comes from the writings and stories of ___________________________. A. non-literate B. stupid C. Christians D. Muslims E. traders and missionaries F. All of the above I...
*September 13, 2014*

**chemestry**

How many molecules (not moles) of NH3\rm NH_3 are produced from 8.21×10−4gg of H2\rm H_2
*September 13, 2014*

**HISTORY**

15-20. Put the following events in chronological order, with A for the first to occur and G for the last to occur. g The “Pilgrims” land at Plymouth Rock, Massachusetts F Defeat of the Spanish Armada D Jacques Cartier leads the first French effort to colonize the New...
*September 13, 2014*

**HISTORY**

True False Columbus first sighted land in the New World near Newfoundland. I would say false because wasn't John Cabot the one to discover Newfoundland? Columbus was a devout adherent of A. Sunni Islam B. Hinayana Buddhism C. Orthodox Judaism D. Roman Catholicism E. ...
*September 13, 2014*

**HISTORY**

European overseas commercial expansion was aided by A.advances in shipbuilding and navigation B.the centralized power of nation-states C.European desires for wealth through trade D.the desire for alternative trade routes to bypass the Ottomans E.All of the above F. None of the...
*September 13, 2014*

**Science**

what is spectral broadening
*September 13, 2014*

**statistics**

A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 13 hours, with a standard deviation of 2.5 hours. It is desired to estimate the mean viewing time within two-quarter ...
*September 13, 2014*

**math**

when you throw up a cricket ball foot ball tennis ball and a basket ball which will go to a maximum height
*September 13, 2014*

**engineering science**

An object is kept in equilibrium on an incline by means of supporting force, which is at an angle of 30 degrees o the inclined. The weight of the obbject is 500N. The incline forms an angle of 45 degrees with the horizontal. The coefficent of the friction between the surfaces ...
*September 13, 2014*

**maths**

Ted recieved his pocket money He spent: 3/5 on games 1/10 on magazines What fraction of his pocket money is left? I dont understand how to do this question. Please help
*September 13, 2014*

**maths**

Thank you so much. I understand your method. Thank you again:)
*September 13, 2014*

**maths**

Debra recieved her £15 pocket money. She spent: 1/3 on magazines 2/5 on a necklace How much did she have left? My answer 1/3 of 15 is 5 2/5 of 5 is 2 2 pound is left Am I correct?
*September 13, 2014*

**History**

Discuss the causes of French Revolution of 1789
*September 13, 2014*

**HISTORY**

The most likely place of origin for Native Americans is A. Atlantis B. Asia C. Israel D. Polynesia E. Mars F. All of the above I would say central Asia, correct?
*September 13, 2014*

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