Thursday

September 3, 2015
Total # Posts: 560

**Math please help hurry**

A submarine is travelling parallel to the surface of the ocean at a depth of 626m. It begins a constant ascent in order to reach the surface after travelling a distance of 4420m. The ascent takes 35mins. A.) what angle of ascent or angle of elevation would the submarine need ...
*December 9, 2013*

**Acid/Base Chemistry**

A 497 mL sample of 0.9960 M HI is mixed with 443 mL sample of KOH (which has a pH of 13.51). What is the pH of the resulting solution? What are the steps to solving this problem? I think you need to find the concentration of OH by taking 10^-pOH, and then do an ICE table from ...
*December 8, 2013*

**Geometry**

for each parallelogram find the measures of the angles formed by extending two adjacent side through their common vertex: angle is 90 degrees
*December 1, 2013*

**Math quick question**

Thank u so much:)
*November 20, 2013*

**Math quick question **

Create a system of linear equations with this situation: Megan considers two different car rental options. One option costs $19 per day plus $0.12 per kilometre . Another option costs $42.50 per day for unlimited kilometres . Thanks :)
*November 20, 2013*

**phyics**

did you ever figure out the answer? I'm doing this problem now and i can't figure it out
*November 12, 2013*

**science**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013*

**Socials**

If in Napoleon Bonaparte's perspective, what was the best form of government did he want and why would this be good for the country(France)? Doing a project where you make a campaign trying to persuade people to vote for you(Napoleon) :) Thanks in advance!
*October 22, 2013*

**Physics -URGENT-**

A 2 kg mass accelerates at 5.7 m/s 2 in a direction 19◦ north of east. One of the two forces acting on the mass has a magnitude of 17.1 N and is directed north. Determine the magnitude of the second force. Answer in units of N
*October 13, 2013*

**To ms sue**

Can you please help me with my English , much appreciated
*September 19, 2013*

**English writing a concluding paragraph**

I have to write from specific to general in my concluding paragraph and can't have any contractions, no 1st person or second person , no rhetorical questions , no in conclusion, in summary, etc
*September 19, 2013*

**English writing a concluding paragraph**

My essay is about conformity and rebellion. I need a really good conclusion. My intro is this: In life there will be certain situations in which we will have to stay in order or choose to make our decisions ourselves. For example there will be times when conformity will strike...
*September 19, 2013*

**7th Grade**

Well we learn about the Earth and DNA and plants and all of the components of a plant we also learn about Animals.
*September 16, 2013*

**Sciences**

Helium has an atomic number of two.what can be inferred about helium from this fact?
*September 16, 2013*

**Math**

how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. y5/3 is under the square root sign sorry I retyped this, but I made a mistake typing it before
*September 12, 2013*

**Math**

No wait let me re type the question: y5/3 is under the square root sign
*September 12, 2013*

**Math**

the ay was supposed to be a square root sign..
*September 12, 2013*

**Math**

how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. ãy 5/3
*September 12, 2013*

**English, check my answers**

Oh thank you:)
*September 11, 2013*

**English, check my answers**

please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences: 1. My dog's been so sick lately. 2. We've been having lots of fun in science classes. 3. Why's the dog eating from the cats' ...
*September 11, 2013*

**Chemisry**

6M HCl + 1M NaOH => NaCl + H2O If I'm understanding this correctly, all of the NaOH is used up because the molarity is 1 where the HCl's is 6 this leaves excess HCl correct?
*August 26, 2013*

**Algebra**

The deck around a swimming pool has the same width all the way around. The perimeter of the pool is 50m. The outside perimeter of the deck is 74m. What is the width of the deck
*June 10, 2013*

**Math**

if 3/5 of the class are boys and there are 12 more boys than girls. How many girls are there in the class?
*June 4, 2013*

**Physics**

An arrow is fired horizontally from the top of a 40.0-m vertical cliff and lands 125 m away. Therefore the arrow was fired at _____ m/s.
*May 18, 2013*

**Physics**

I don't understand.. could you give a better answer?
*May 11, 2013*

**Physics**

A car that was initially at rest reaches a final speed of +50.0 m/s over a displacement of +55.0 m. What is the magnitude of the acceleration? Find the time it took to travel the first 55 m.
*May 11, 2013*

**environment**

United Nations Environment Program Greenpeace
*May 11, 2013*

**chemistry**

enzymes convert glucose M=180.2 to ethanol M=46.1 according to the equation C6H12O6=2C2H5OH + 2CO2 what is the maximum mass of ethanol that can be made from 15.5 kg of glucose?
*May 4, 2013*

**math**

a company employs 12 gardeners at $26 per day , and 8 clerks at $17 per day. What is the mean daily wage,in dollars,of the 20 employees?
*April 28, 2013*

**math**

a man pays 60 cents for every 200m3 of gas used,plus a fixed charge of $13.75. How much does he pay when he uses 55 000m3 of gas?
*April 28, 2013*

**math**

simplify in radical form (x^-2/5)^1/4
*April 24, 2013*

**chemistry FP depression**

if I had to choose a solvent for a freezing point depression lab...would I choose Chloroform or Benzophenone? and why?
*April 23, 2013*

**chemistry**

if calculating molecular weight of unknown by freezing point depression...All of the unknowns in the activity were nonpolar organic molecules with molecular weight= 100-250 g/mol and using around 1g of the unknown. Provide an example of a solvent that could possibly be used ...
*April 22, 2013*

**chemistry HELP**

if calculating molecular weight of unknown by freezing point depression...All of the unknowns in the activity were nonpolar organic molecules with molecular weight= 100-250 g/mol and using around 1g of the unknown. Provide an example of a solvent that could possibly be used ...
*April 22, 2013*

**physics**

Thunderstorms can have an electric ﬁeld of up to 341 × 10 ^5 N/C. What is the magnitude of the electric force on an electron in such a ﬁeld? The fundamental charge is 1.6002 × 10^−19 C .
*April 22, 2013*

**Physics**

A coil with 347 turns of wire, a total resistance of 49 Ω, and a cross-sectional area of 0.28 m2 is positioned with its plane perpendicular to the ﬁeld of a powerful electromagnet. What average current is induced in the coil during the 0.31 s that the magnetic &#...
*April 22, 2013*

**physics**

A ﬂat coil of wire consisting of 56 turns, each with an area of 39 cm^2, is positioned perpendicularly to a uniform magnetic ﬁeld that increases its magnitude at a constant rate from 3.1 T to 10 T in 5.7 s. If the coil has a total resistance of 0.56 Ω, what ...
*April 22, 2013*

**Chemistry**

You're incorrect.
*April 7, 2013*

**Math**

Is the equation sinx + cosx = 1 an identity? Why?
*March 20, 2013*

**Physics**

A series of pulses, each of amplitude 0.190 m, are sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. (a) What is the displacement at a point on the string where two pulses ...
*March 16, 2013*

**psychology**

The first year after the speed limit was reduced to 55 mph was the first year since there was a federal speed limit that no one in the United States who was observing the speed limit died in an auto accident. What does this prove?
*March 4, 2013*

**Psychology**

I know a man who read to his 5 children every night before they went to bed, and they all could read before entering preschool. Suppose that this were true of all children we could find who were read to every night before going to bed but true of only a few of those who were ...
*March 4, 2013*

**psychology**

For question #1, can you say that the two variables are positively correlated however, it doesn't mean that running regularly can cause one to lives longer. For question #2, are you saying that there are other variables that need to be considered?
*March 4, 2013*

**psychology**

1. A recent study confirms that people who run regularly, live longer. How can one explain that? 2. More retired people die each year than those who have not retired. Does this mean that delaying retirement will increase one's life expectancy? Explain.
*March 4, 2013*

**Psychology**

How could my wife and I find out whether the South Beach Diet works for us? Write the methods section for an experiment.
*March 4, 2013*

**psychology**

Here is what i come up with. will you see if it make sense? Recruit few random women from her age group. Randomly divided them into 2 groups Assign each group one of the bicycle. Let the two groups compete and see which group perform better.
*March 4, 2013*

**psychology**

A friend of mine finished fourth in her age group in the world duathlon (run, ride, run). She has two bicycles that differ along several variables, but she isn’t sure which one will be best for the next season. How could she find out? Write the methods section for an ...
*March 4, 2013*

**psychology**

Suppose that you have developed three new kinds of hair shampoo, and you want to know how people's preference depends on their age. Design an experiment to find out.
*March 4, 2013*

**psychology**

What implications do the results of an experiment have for subjects that were not observed in the experiment?
*March 4, 2013*

**Math**

Use the discriminate to determine the number of real solutions of the equations. 7^2-2x+1
*February 25, 2013*

**Probability/Decision Analysis**

A manufacturer is trying to decide whether to build Building A or Building B. The profit per unit is $5. Building A gets an annual cost of $100,000 with a production capacity of 25,000 units each year. Building B gets an annual cost of $200,000 with a production capacity of 50...
*February 20, 2013*

**Statistics**

A brewery's filling machine is adjusted to fill bottles with a mean of 32.6 oz. of ale and a variance of 0.004. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability that the next ...
*February 15, 2013*

**H. CHemistry**

if the atmosphere can support a column of mercury 760 mm high at sea level, what height of a hypothetical liquid whose density is 1.40 times the density of mercury could supported?
*January 30, 2013*

**geometry**

a ladder is placed next to a building to get to the top. the bottom of the ladder is placed 7 feet away from the building at an angle of 56 degrees.how tall is the building?
*January 29, 2013*

**english**

What is the simple subject and simple predicate in sentence: The smell of cooking is delicious to the hungry campers.
*December 31, 2012*

**english**

What is the simple subject and simple predicate in the sentence: A good fire is difficult to build.
*December 31, 2012*

**math urgent**

i think it b c a
*December 20, 2012*

**Algebra 2**

Subract. Put the answer in the simplest form 9/x-4 - 5/x+4
*December 19, 2012*

**Math **

1. The total of 36, 78, 198, 475, and 620 is A. 2,109. B. 1,731. C. 1,187. D. 1,407. I say it's D 1407
*December 10, 2012*

**Math**

what is 5.8, 5.29,5.2942,5.029 from least to greatest
*October 8, 2012*

**ok**

ok any body else thatcould anser this cuz i don't want to do my homework
*October 1, 2012*

**Math Help!**

is 10 000 more than 881 462 is 1000 000 less than 2 183 486 is 1 000 000 more than 746 000 is 1 000 000 less than 624 327 207
*October 1, 2012*

**governement**

I don't know
*October 1, 2012*

**governement**

citizens of a place?
*October 1, 2012*

**government**

set of land boundaries of a state?
*October 1, 2012*

**Algebra**

What is the rule in equation form of an input/output table if the inputs are 2 10 and 6 and the outputs are 2 6 and 4 ?
*October 1, 2012*

**physics**

a car traveling at 7 m/s accelerates to a velocity of 12.0 m/s in 2.0s. what is the acceleartion of the car?
*September 25, 2012*

**grade six math**

The anser is 7,555,131 its sooo easy
*September 13, 2012*

**math**

What is the value of the 3 in .ooo3?
*September 9, 2012*

**Math (cummulative review)**

Factor the given polynomial: 3y2+5y-8 the 2 is an exponent...
*September 5, 2012*

**English**

'How about painting the wall a new color?' is addressing one person asking a question to a seperate individual. 'How about we paint the wall a new color? is referring to the person asking the question who would like to help the individual with the painting.
*August 31, 2012*

**Health**

All of your points sound really good so far. I have another factor that you could add. E. Most likely to develop diabetes due to the result of not eating healthy
*August 30, 2012*

**Health**

'C' is the best answer out of all of them. I'd make 'B' a correct answer as well. Both of the liquids are healthy to drink.
*August 30, 2012*

**Fitness And Nutrition**

Well, let's go over it. 'A' is the plan that can be followed and used for a long period of time. 'B' is the plan that you have to go to a lot of stores to find one item. It would be tiring after a while. 'C' is the plan that in 1 week you lose, let...
*August 6, 2012*

**chemistry**

How Many H bonds in Oblate Polyhedra?
*June 29, 2012*

**trigonometry**

write 2=5cis 11pie/6 in standard form.
*May 17, 2012*

**trigonometry**

find the dot product of u=2i-7j and v=i+8j
*May 17, 2012*

**trigonometry**

given v=5i+3j and w=-4i+8j, find projwv
*May 17, 2012*

**trig**

find the single term of cos^2 4theta - sin^2 4theta
*May 16, 2012*

**trig**

find the period of f(x)=-2cot x/5
*May 16, 2012*

**Chem**

Okay I got the second pH w/HCl and it is 2.23. but still can't find the pH of both of the ones w/HC2H3O2. Please help?
*May 7, 2012*

**Chem**

Complete the table below: Note: Make simplifying assumptions, do not use the quadratic formula. What is the pH of the solution created by combining 1.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH: 1.90 pH w/HCl...
*May 7, 2012*

**algebra**

(6x-2y)/(x^2+xy-2y^2)-(3x+2y)/(x^2+3xy-4y^2)
*April 25, 2012*

**Basic Dressmaking Processes**

A Correct 2. D Correct 3. B Correct 4. A C PAGE 6 5. A Correct 6. D Correct 7. C Correct 8. B Correct 9. C Correct 10. D Correct 11. C Correct 12. C Correct 13. A Correct 14. B Correct 15. D Correct 16. C Correct 17. A Correct 18. A Correct 19. B Correct 20. B Correct
*April 24, 2012*

**Math**

If you're rolling two dice, what is the probability that the sum of two dice is a 7?
*April 15, 2012*

**math**

i try and try to practice for my checkpoints but i keep on failing in them!!!!!!!!!!! what can i do to improve in maths,science and english. please help me practice. I was hoping you could give me the real checkpoint papers for all subjects!! thatcwould be amazing then i'...
*April 12, 2012*

**english**

I'm writing a english paper about A Tale of Two Cities to show why/how the topic of law/corruption/power matters from the way Dickens uses it in the text. I am trying to write my intro, but I am having trouble. All I have so far is an attention-getter, a quote. Here is the...
*April 5, 2012*

**Chemistry**

Thank you so much! Not I dont think I will fail my test tomorrow!
*April 4, 2012*

**Science**

you are to make a buffer of pH = 4.33 using HNO2 and NaNO2 what ratio of NO2- to HNO2 is required?
*April 2, 2012*

**math**

The diameter of each tire on Niki's bike is 66 centimeters (cm). It takes her 16 minutes to ride 10 kilometers (km). How fast did Niki ride, in kilometers per hour?
*March 25, 2012*

**11th grade math**

A farmer wants to fence in 60 000m^2 of land in a rectangular field along a straight road. The fencing that he plans to use along the road is $10 per meter and the fencing that he plans to use for the other three sides costs $5 per meter. a) How much of each type of fence ...
*March 25, 2012*

**Acoustic and Auditory Physics**

Yeah, I am having trouble interpreting it. I think The first resonant frequency fits well within a frequency range where the ear is maximally sensitive makes the most sense
*March 18, 2012*

**Acoustic and Auditory Physics**

A resonant frequency is a frequency that resonates within a tube of some length. The first resonant frequency of the average ear canal is around 3,000 Hz. Look at the Fletcher-Munson diagram. Which of the following statements is correct? The intensity level of the first ...
*March 18, 2012*

**geometry**

A triangle is inscribed in a circle. One side of the triagle has lenghth 12 cm, and the angle opposite that side measures 30 degrees. What is the diameter of the circle?
*March 8, 2012*

**Algebra 2**

On some tubes of caulking, the diameter of the circular nozzle opening can be adjusted to produce lines of varying thickness. The table shows the length (L) of caulking obtained from a tube when the nozzle opening has diameter (d) and cross-sectional area (A). 31) Does L vary ...
*March 3, 2012*

**ap chemistry**

what volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOCl to acheive a PH of 8.00?
*March 1, 2012*

**IUP**

A Circular metal loop is 28.0 cm in diameter. how large a current must flow through this metal so that the magnetic field at its center is equal to the earths magnetic field of 5.00*10-5T?
*February 29, 2012*

**calculus**

A particle moves in a straight line with velocity given by v(t) =sin t metres per second. Find the total distance travelled by the particle in the first 4 seconds of motion
*February 14, 2012*

**math 7**

what is 3/7th of 490
*February 7, 2012*

**math**

I have the same problem.
*January 30, 2012*