Tuesday

September 30, 2014

September 30, 2014

Total # Posts: 1,516

**Heat Transfer**

A factory would like to produce plain carbon steel strips with pieces of polyethylene plastic ﬁlm bonded on them. The bonding operation will use a laser that is already available to provide a constant heat ﬂux of q′′0= 85, 000 W/m2for a speciﬁ...
*April 15, 2012*

**Physics**

what 2 properties of carbon make it a good material to use for motor brushes?
*April 14, 2012*

**6th G-Math**

1.What is a reasonable estimate for the area of a circle with radius 4 cm? A. Area=12cm^2 B. Area=16cm^2 C. Area=24cm^2 D. Area=48cm^2
*April 9, 2012*

**math**

13 - 8x = 5x + 2 x= -11/-13?
*April 9, 2012*

**6th G Math**

Sam has started babysitting to earn extra money. On Thursday night she earned $26, on Friday night she earned $19, and on Saturday night she earned $24. What is the mean amount of money she earned during the weekend?
*April 8, 2012*

**science-anatomy**

How is static equilibrium accomplished? How is dynamic equilibium accomplished?
*April 7, 2012*

**science**

How does colorvision and night vision function?
*April 7, 2012*

**math**

sonya spent 3/8 of her money and had $15 left. how much money did she orginally start with?
*April 4, 2012*

**Trig**

1)y=1-tan(3pi-2x) Find period and phase shift 2)y=-sin(5x+3) Find amplitude,period,and phase shift 3)y=1-sin(3pi-2x)Find amplitude,period,and phase shift 4)y=2csc(2x-1)Find period and phase shift 5)Given the graph of y = sin (x), what transformation can be made to make the ...
*April 1, 2012*

**Trig**

y=sin(2pi*x-pi) find the amplitude, period, and phase shift
*April 1, 2012*

**Trig**

y=sec(2x+1) Find the period and phase shift. Sorry i'm really bad at these.
*April 1, 2012*

**Trig**

y=2tan(x-1) Find the period and phase shift.
*April 1, 2012*

**physics**

In this equation, vd is the speed of the detector, and vs is the speed of the source. Also, fs is the frequency of the source, and fd is the frequency of the detector. If the detector moves toward the source, vd is positive. If the source moves toward the detector, vs is ...
*March 28, 2012*

**Calculus**

solve: Sin2x=Sinx
*March 27, 2012*

**Chemistry**

How many mL of 3.00M HNO3 would you need to make exactly 100mL of 0.83 HNO3 by dilution with water? (The FM of HNO3 = 63.0.)
*March 14, 2012*

**chemistry**

Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide. NH4I(s) Picture NH3(g) + HI(g) At 400°C, Kp = 0.215. Calculate the partial pressure of ammonia at equilibrium when a sufficient quantity of ammonium iodide is heated to 400°C.
*March 8, 2012*

**math**

If you deposit $10,000 in a savings account now, what interest rate compounded continuously would be required for you to withdraw $15,000 at the end of 6 years? B. A savings and loans facility offers a CD with a monthly compounding rate that has an APY of 6.25%
*March 7, 2012*

**world cultures**

i need help on knowing that the cultural changes between Umayyad and Abbasid. pleaseee! thank you
*March 5, 2012*

**chemistry**

How many grams of ice at -11.2 degrees C can be completely converted to liquid at 29.8 degrees C if the available heat for this process is 4.12×10^3 kJ? For ice, use a specific heat of 2.01 J/(g*degrees C) and delta H_fus = 6.01 kJ/mol.
*March 4, 2012*

**History**

Why is Lucius Lyon reluctant to give up the Toldeo Strip?
*February 25, 2012*

**statistics research**

What proportion of adults use between 15 and 23 gallons of gas per week if it is normally distributed with a mean of 16 gallons and a standard deviation of 5 gallons?
*February 24, 2012*

**Physics**

The hypotenuse of a right triangle is 29.0 centimeters. The length of one of its legs is 20.0 centimeters. What is the length of the other leg?
*February 22, 2012*

**Pre-Cal (polynomials)**

Look at the right end behavior of each function )\(as x -> infinitey). what about the function determines whether its graph wil point up or down on the right-hand side?
*February 22, 2012*

**Pre-Cal (polynomials)**

How does the degree of a polynomial function affect the end behavior?
*February 22, 2012*

**Pre-Cal (polynomials)**

what is the general relationship between the degree of a polynomial function and the number of "bends" or relative maximum and minimum points in the graph?
*February 22, 2012*

**GEOMETRY**

Which statement is the contrapositive of the following conditional: If a triangle is isosceles, then it has 2 congruent sides. a. If a triangle does not have 2 congruent sides, then it is not isosceles. b. If a triangle is isosceles, then it does not have 2 congruent sides. c...
*February 21, 2012*

**GEOMETRY**

What is the slope of line that passes thru (-4, -2) and (5, 1)?
*February 20, 2012*

**GEOMETRY**

Find the value of y if B is midpt of AC, and C is midpt of BD. AB=7y-2 BC=x+3 CD=9
*February 20, 2012*

**Chemistry**

Sorry here are the data: Values at 20 degrees Celcius ethanol : density (g/mL)= 0.789/ vapor pressure (torr)= 43.9 water: density (g/mL) =0.998/ vapor pressure (torr)= 17.5 I' m still confused on what you are telling me to do :( Can u please clarify...
*February 18, 2012*

**Chemistry**

A solution is made by mixing 30.0 mL of ethanol, C2H6O, and 70.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 °C? I got an answer of 15.45 torr and it marked me incorrect and said "Your answer is the the partial vapor pressure...
*February 18, 2012*

**physics**

a.) A 125 kg stone has an acceleration of 84.9 m/s2. Determine the net force acting on the stone. b.) A 45 N force is acting on a 757 kg slab. Determine the acceleration of the slab. c.) A 63.2 N force acts on a block and causes an acceleration of 85.1 m/s2. Determine the mass...
*February 13, 2012*

**Chemistry**

Thank you Dr. Bob! That was very helpful
*February 10, 2012*

**Chemistry**

Consider an ideal gas encloesd in a 1.00 L container at an internal pressure of 10.0 atm. Calculate the work, w, if the gas expands against a constant external pressure of 1.00 atm to a final volume of 20.0 L. w = ____ J now calculate the work done if this process is carried ...
*February 10, 2012*

**algebra**

Sarah blends coffee for Tasti-Delight. She needs to prepare 170 lbs of blended coffee beans selling for $3.59 per pound. She plans to do this by blending together a high-quality bean costing $5.00 per pound and a cheaper bean at $2.00 per pound. To the nearest pound, find how ...
*February 9, 2012*

**math**

THANK YOU!!!
*February 8, 2012*

**math**

write the expression using negative exponents. (4/3x)+(4/x^2)-(7x/5thsqrroot2x) and Write the fraction as a sum or two or more terms. (6x^3-8x^2+4)/(x^(1/4)
*February 8, 2012*

**Math**

if a polynomial function is of degree n, then the graph will have n-1 relative maximum and minimum points. Is this: Always True, Sometimes True, or Never True? It's really confusing me.
*February 7, 2012*

**Pre-Cal**

In terms of x, write expressions for the length, width, height, and volume of the boxes created in the activity. I just need an example, so i'll just give one box. X-1 length-20 width-14 height-1 volume-280
*February 6, 2012*

**Pre-Cal**

I have a piece of paper 22 in. long and 16 in. wide. I cut a 7 in. x 7 in. square from each corner. I then fold up the sides and form a box with an open top. What is the volume of this box?
*February 6, 2012*

**Homeostasis**

Genetic conditions that cause death or disability in young people would be more likely to be selected against (from an evolutionary standpoint) because those genetic conditions would get in the way of the person being able to reproduce and would therefore reduce the person&#...
*February 4, 2012*

**history**

I am, thank you so much, i really appreciate it :)
*February 2, 2012*

**history**

is it 1
*February 2, 2012*

**history**

The Anti-Federalists _____. 1.)opposed the ratification of the Constitution My answer2.)supported a stronger national government 3.)were a tiny minority of the population 4.)were infuriated by the Bill of Rights
*February 2, 2012*

**calculus**

Consider the function f(x)=65x−cos(x)+2 on the interval 0 less than or equal to x less than or equal to 1. The Intermediate Value Theorem guarantees that there is a value c such that f(c)=k for which values of c and k? Fill in the following mathematical statements, ...
*February 2, 2012*

**Physical Science**

a=change in vel./time 6m/s-0m/s divided by 4 sec. acc. = 1.5 m/s^2 F=ma F= (80 kg)(1.5m/s^2) F=120N Hope this helps! :D
*February 1, 2012*

**Math**

simplify: 3sqrt(2)+5sqrt(4)+8sqrt(2)-2sqrt(6)
*February 1, 2012*

**physics**

If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. pool is 30 m long please answer in km
*January 27, 2012*

**physics**

If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. pool is 30 m long please answer in km
*January 27, 2012*

**physics**

If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. -answer in km
*January 21, 2012*

**physics**

If you have swam one lap in a swimming pool, that means you have swam from one end to the other and back. In 3 h, a swimmer makes exactly 30 laps in a swimming pool that is 30 m long. Determine the distance the swimmer traveled, the total displacement of the swimmer, the ...
*January 16, 2012*

**Geometry**

Which is logically equivalent to ~p -> q? a.) ~q -> p b.) ~q -> ~p c.) q -> p d.) q -> ~p
*January 7, 2012*

**English 7 - Extra Credit Project (PLZ READ!)**

Um... Writeacher, I don't I'll be aloud to e-mail people.
*January 1, 2012*

**English 7 - Extra Credit Project (PLZ READ!)**

What is Rachel Renee Russell adress. I can't seem to find it. I'm really writing a letter to her and doing this as a extra credit project for english.
*January 1, 2012*

**FFA**

OK :) Thank You!!! :)
*December 31, 2011*

**Math**

Evaluate this function for x=-3 f(x)= 4x^3-5x^2/2x-4
*December 31, 2011*

**Math**

Monte has a small rectangular herb garden that has a length 3 yd longer than twice its width. If the area of the garden is 50 yd^2, what is the length of the garden, to the nearest tenth of a yard?
*December 31, 2011*

**Hard work I HAVE done already! :)**

yeah yeah thx
*December 30, 2011*

**Question**

I'm also going to take SAT's and ACT's next year if I get accepted to John Hopkins Talent Search. Plus I'm also doing ACT's and SAT's 2 in high school.
*December 30, 2011*

**Question**

Thank You!!! :) PS: It really helps :)
*December 30, 2011*

**Question**

Thanks!
*December 30, 2011*

**Question**

Ok. Have fuun but please reply my other post.
*December 30, 2011*

**Question **

I'M CURIOS SO DON'T JUST JUDGE ME AND BE RUDE i'M REALLY CURIOUS AND i FORGOT TO ASKED THIS QUESTION. DO NOT JUDGE ME!!!! Do I start taking SAT's and ACT's in grade 10th or 11th/12th grade???? I'm really curious.
*December 30, 2011*

**Question**

Thank You Everyone!!!! :) It does helps!! :) I got these clubs from Clarkstown North HS (I'm hoping I move and go to that high school).
*December 30, 2011*

**Question**

OK. Thanks but are these good clubs for those colleges and Yale????
*December 30, 2011*

**Question**

Senior class is the only class I'm doing (because like there is 9th grade class, and 10th grade class, and 11th grade class) because it's the most important grade. Gradution, prom, scholarships, SAT's and ACT's, awards, colleges application, it's a lot so ...
*December 30, 2011*

**Question **

Will these clubs below help me get into one of these colleges: 1. Illinois state university school of arts 2. Yale University School of Arts 3. The Illinois Institute of Art — Chicago 9th Grade Club • Epiphany (Literary Magazine) • Heart Club • Helping ...
*December 30, 2011*

**Statistics**

2. You are given the following data. Number of Absences Final Grade 0 93 1 90 2 79 3 66 4 60 5 56 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days. Show all ...
*December 30, 2011*

**Contest Question**

Oh I didn't know about that. Thanks for telling me.
*December 29, 2011*

**Contest Question **

Open to all Commonwealth citizens aged 18 or under, the Essay Competition offers young people the opportunity to make their voice heard on a global platform, encouraging students to engage with issues which are important to them. What does this means??? So I have to write (...
*December 29, 2011*

**Science**

OK. I thought it was plant too but thought I was wrong but I was correct. Thank You!!! :)
*December 29, 2011*

**Science **

Where is the cell wall is found? Plant or animal or both?
*December 29, 2011*

**Science Fair Question**

ok. Thank You!!!! :)
*December 29, 2011*

**Science Fair Question **

•Decide which type of project you’re doing. Projects can be entered as one of two types: (1) Science / Technology, or (2) Inventions •Decide which category your project fits in. Click here for a list of the categories. •Gather all of the information you ...
*December 29, 2011*

**HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!**

poured I mean
*December 29, 2011*

**Help! **

My mom "pour" the macaroni and cheese into mu bowl to serve. It's not that hard, Also don't put HELP!!!!!!!!!!! because you'll get yourself on the ban list.
*December 29, 2011*

**Science Fair**

I do know what it means my dad tells me many times. Thanks
*December 29, 2011*

**Science Fair**

Yes I think it have something to do with it since this is about how junk food and healthy food affect the human body. So it's probably the first one.
*December 29, 2011*

**Science Fair **

I'm doing my science fair project on like how healthy and junk food affect the human body. I check on the site (Rockland Sit Fair) and reading the Project Categories. Does these project categories below relates to my project??? Medicine and Health: Study of diseases and ...
*December 29, 2011*

**Contest Question**

ok Thank You!! :)
*December 29, 2011*

**Contest Question**

I'm reading the entry form for National Children Book of the Year Contest since I'm going to partcipate in it.
*December 29, 2011*

**Contest Question **

Entries can be submitted for only $45 (with each additional entry for only $25) until January 16, 2012. Do they mean I should send $45 or 25?????
*December 29, 2011*

**Publish**

The Scholastic Kids Are Authors is for grades k-8 not high schoolers so I'm doing it this year and next year. I'm going to try to publish my stories but I have to find a place to do it. I know your right that is the important thing but they also want others things too.
*December 29, 2011*

**Publish **

Do publish your work (stories, art wk, etc.) will express colleges (ivy league). I'm partcipating some contests that involved publishing work (if one of the winners). Like Scholastic Arts and Writing, Schloastic Kids Are Authors, and National Children Book of the Year ...
*December 29, 2011*

**Science Fair**

Thank You! :)
*December 29, 2011*

**Science Fair**

Oh so when they reach the amount of partcipates they close it ok. I have to register fast.
*December 29, 2011*

**Science Fair **

S/I/T Exhibition 2012 The exhibition will be held on Sunday, March 25th, 2012 at Pfizer in Pearl River, New York. In case of cancellation due to inclement weather, the snow date is Sunday, April 1st, 2012. Registration opens Sunday, January 1, 2012 and closes on Monday, ...
*December 29, 2011*

**Question**

Thank You!!! :) Now I know what it is. I'm going to try to get one for Yale or Harvard. I don't why the awards in NO way reflect any intention to offer acceptance for admission??? They should do that because that person... anyone or me worked really hard.
*December 29, 2011*

**Question **

Why do colleges (like yale, harvard, etc.) give out book awards to high school students????
*December 29, 2011*

**Math 7 - Extra Credit Project**

k thanks
*December 29, 2011*

**Math 7 - Extra Credit Project**

Which source that tells how to do order of operation step by step. I'm making a booklet explain how to do it. I'm also going to make it pretty and creative.
*December 29, 2011*

**Social Studies 7R - Extra Credit Project**

I'll google it instead.
*December 29, 2011*

**Social Studies 7R - Extra Credit Project**

I'm haitian. It''s just that like what should I inculde I don't want to put EVERYTHING in the poster.
*December 29, 2011*

**Social Studies 7R - Extra Credit Project **

I'm making a small poster about my culture. What should I add to it???? Any important things I should add??? This is a extra credit project for Social Studies.
*December 29, 2011*

**English 7- Extra Credit Project**

Thanks. I'm going to google how to write a good letter to the author.
*December 29, 2011*

**English 7- Extra Credit Project**

Ok.
*December 29, 2011*

**English 7- Extra Credit Project **

I'm writing a letter to my favorite author (Rachel Renee Russell) explaining why I love her book and why she is my favorite author. I'm doing this for extra credit for english plus I'm really writing a letter to her. Is there any helpful formate about writing a ...
*December 29, 2011*

**IQ**

Thank You!!! :) PS: I'll go check on that info you gave me.
*December 29, 2011*

**IQ **

What is IQ??? Like when a teacher says this says it in your IQ. One time my dad told me something that says something in my IQ but I don't know what it is. So what is IQ????
*December 29, 2011*

**Question**

Ok. Thank You
*December 29, 2011*

**Question**

The one at the bottem continues above what I said.
*December 29, 2011*

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