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October 20, 2014

October 20, 2014

Post a New Question | Current Questions

**11th Grade chemistry**

How to get pure gold from impure gold..please specify the chemical equation.. any example is fine,e.g. AuCl3 -> Au
*Wednesday, May 13, 2009 at 8:26am*

**11th grade**

during what holiday did german and english soldiers observe an informal truce they shared their food buried theri dead and sang together
*Saturday, January 31, 2009 at 10:53pm*

**11th grade**

hi, i am haveing prob;ems with my math its called solving the quadratic equation but my teacher is not really giving me the attention i need to pass the class but will you help me please
*Wednesday, January 28, 2009 at 10:51am*

**11th grade Art**

What is keyhole painting? Could you help me with analysing an artwork. What information should I give.
*Friday, January 23, 2009 at 10:10am*

**11th grade**

what were knights social status and daily lives like?? its kind of confusing how this site puts it to me please help me understand..
*Tuesday, January 6, 2009 at 10:05am*

**11th grade**

what were the most significant tecchnological innovations of the medieval period? need help this subject kills me!!!!!!
*Tuesday, January 6, 2009 at 10:01am*

**11th grade**

im writing this essay for an european history class. i've already started it but i just need help adding in deatails on the caliphate. like, why did it decline? and what were the results of this? please help me!!!!!!!!
*Thursday, December 18, 2008 at 6:25pm*

**11th grade**

why did the religons of buddhism and christianity spread when and as it did in africa during 300 bce?
*Tuesday, December 2, 2008 at 10:14pm*

**English 11th grade level**

Whaat was on santiago's small line in old man and the seaa?
*Tuesday, November 25, 2008 at 3:44pm*

**11th grade chemistry**

whats the ionic name for strontium iodide
*Thursday, November 20, 2008 at 7:03pm*

**11th grade**

Why do we need to polish magnesium before using it in an experiment?
*Saturday, October 18, 2008 at 5:45pm*

**11th grade**

what is the difference between a student loan, a grant and a scholarship and how would you go about applying for each of them.
*Thursday, October 16, 2008 at 11:47am*

**11th grade**

CAROLINA, 1670-1760 TO WHAT EXTENT WAS ECONOMICS THE BASIS FOR PROTEST?
*Wednesday, October 8, 2008 at 8:28pm*

**11th grade ETHICS**

Compare and contrast absolute and relative approaches on culture and morality. PLEASE HELP I AM SOOOO STUCK !!
*Wednesday, October 8, 2008 at 2:52pm*

**11th grade physics**

im not procrastinating i really dont understand it. im not asking for the answers im just asking for a little more help??
*Sunday, October 5, 2008 at 8:51pm*

**11th grade**

why do biologists use a classification system to study the diversite of life?
*Thursday, September 25, 2008 at 5:26pm*

**11th grade**

where can i find a simple map of the original 13 colonies showing french and spanish territories
*Sunday, September 21, 2008 at 1:23pm*

**11th grade**

your pet dog runs around in circles, chasing his tail. Does this mean acceleration?
*Thursday, September 18, 2008 at 5:00pm*

**11th grade**

is separating water into hydrogen and oxygen a physical or chemical separation?
*Saturday, September 13, 2008 at 6:05pm*

**11th grade**

true or false. if three points are coplanar, they are collinear
*Thursday, September 11, 2008 at 11:06pm*

**11th grade**

does any one know anything about persian calendars how do they count years and anything at all
*Saturday, September 6, 2008 at 6:05pm*

**11th grade**

use a graphic organizer like the one below to compare the most powerful parts of the british and french governments
*Thursday, September 4, 2008 at 6:33pm*

**11th grade (World History)**

Which ruin is about 140 miles southwest from Copan?
*Tuesday, September 2, 2008 at 7:52pm*

**11th grade u.s. history**

Describe the Puritians. What were their beliefs? Why did they leave England? What did they accomplish in the new world? ANY HELP IS APPRECIATED.
*Monday, September 1, 2008 at 10:12pm*

**AP classes**

I am taking an AP class for the first time. How does this differ from regular classes and what should I expect. (11th grade)
*Tuesday, August 26, 2008 at 8:14pm*

**11th Grade US History**

Why was James A. Garfield assassinated? What was the motive of the assailant(Charles Guiteau) What was the effect of the assassination on the American public?
*Monday, April 7, 2008 at 10:41pm*

**11th Grade US History**

I need the names of two U.S. Presidents that have been impeached.
*Thursday, April 3, 2008 at 11:41pm*

**pre calc**

Is there any complex numer that is equal to its conjugate? a+bi=a-bi????? precalc 11th grade a+bi=a-bi ---> 2 bi = 0 ---> b = 0 So, the imaginary part has to be zero.
*Thursday, November 16, 2006 at 7:10pm*

**Algebra**

Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th Grade 7th Grade 8th Grade High School 9th Grade ...
*Thursday, October 9, 2014 at 8:35pm*

**11th grade math**

in triangle DEF,<D=50 degree, DE=14 meters, and DF=10 meters. find the area of triangle DEFto the nearest tenth of a square meters
*Sunday, April 7, 2013 at 12:10pm*

**Physics 11th grade**

1) A racing car has a mass of 1525 kg. What is its kinetic energy if it has a speed of 35 m/s? 2) How much potential energy does Tim,with mass 60.0 kg, gain when he climbs a gymnasium rope a distance of 3.5 m? -Benchmark Review-
*Sunday, March 10, 2013 at 4:29pm*

**statistics**

sing the 95% confidence level and the 11th grade male writing scores in the Class Data file, you would expect the lower end of the confidence interval to be approximately what value?" Answer
*Monday, November 26, 2012 at 10:09pm*

**English 11th grade**

Analyze the sentence to select the adverb clause, subordinating conjunction, and the word(s) modified in the appropriate boxes below. Please get to bed early since you have a test tomorrow.
*Wednesday, October 3, 2012 at 9:35am*

**Chemistry (11th grade)**

we have the following equation- 2HCl+CuSO4 yields H2SO4+CuCl2. the question is if 7 moles of HCl react, how many moles of H2SO4 will be produced?
*Sunday, June 3, 2012 at 10:14pm*

**11th grade algebra 2**

(1-7) write each function in vertex form (8-10) write each funtion in standard form? 1) Y=x^2+3x-10 2) Y=x^2-9x 3) Y=X^2+x 4) Y=x^2+5x+4 5) Y=4x^2+8x-3 6) Y=(3/4)x^2+9x 7) Y=-2x^2+2x+1 8) Y=(x-3)^2+1 9) Y=2(x-1)^2-3 10)Y=-3(x+4)^2+1
*Thursday, April 5, 2012 at 6:42am*

**english/11th grade**

He responds whenever he is called. In this sentence the Adverb clause is: whenever he is called and the Subordinating conjunction is: whenever what is the word modified? how can i figure out which word it is?
*Thursday, November 17, 2011 at 1:15pm*

**Math 11th Grade**

Use Demoivre's Theorem to find the fourth roots of -16. Leave the four roots in trigonometric form. How the heck do i do this?
*Sunday, April 3, 2011 at 9:34pm*

**Physics 11th Grade**

Ninja usually weighs 80 kg. He ate 5 kg of cookies over the Holiday Break: a. What is his weight? and B. How can ninja use physics to lose weight?
*Sunday, January 9, 2011 at 5:24pm*

**11th grade**

A student reads that bromine (Br) tends to gain one electron in chemical interactions. Which BEST describes a region of the periodic table where all elements tend to share this property?
*Friday, December 24, 2010 at 5:10pm*

**11th grade**

4. The use of technology such as telephones and computers means that money exchanges and other financial transactions can be a. based on the U.S. dollar all over the world. b. converted to prices in any currency. c. made instantaneously. d.sensitive to variations in any ...
*Tuesday, December 21, 2010 at 7:48pm*

**11th grade**

a race car travels along a raceway at a constant velocity of 200 km per hour.what horizontal force acts and what is the net force acting on the car?
*Monday, December 20, 2010 at 12:50pm*

**11th grade**

A resonating glass tube closed at one end is 4.0 cm wide and 47 cm long. What are the frequencies of the first three harmonics for the resonating tube? The speed of sound in air at this temperature is 346 m/s.
*Friday, December 17, 2010 at 10:04am*

**11th grade**

A reflecting telescope contains a mirror shaped like a paraboloid of revolution. If the mirror is 4 inches across at its opening and is 3 inches deep, where will the collected light be concentrated?
*Thursday, December 16, 2010 at 7:39pm*

**11th grade**

A thunderstorm has an electric field one night of 1.5 105 N/C. What is the magnitude of the electric force on an electron in such a field?
*Thursday, December 16, 2010 at 5:20pm*

**11th grade**

mr.reyes's geometry class built kites.of the 32 students in class, 87.5% of the kites flew.of the remaining kites, 75% of kites were unfinished.how many kites were finished but did not fly?
*Wednesday, December 15, 2010 at 6:46pm*

**11th grade pre ap physics**

An athlete whirls a 7.00 kg hammer tied to the end of a 1.1 m chain in a horizontal circle. The hammer makes one revolution in 0.9 s. What is the tension in the chain?
*Monday, December 13, 2010 at 10:30pm*

**11th grade**

Joe wants to draw a triangle.the lengths are 5cm,12cm,and 13cm. A:will joe be able to draw the triangle?why or why not?
*Monday, December 13, 2010 at 9:43am*

**11th grade**

a rock is dropped from a 20.0m bridge falls into the river below. a.)at whqat velocity does it strike the water? b.)how much time did the rock take to reach the water?
*Sunday, December 12, 2010 at 12:40pm*

**11th grade**

Consider two vectors where F1 = 38 N, F2 = 58 N, and = 240o and = 25o, measured from the positive x-axis with counter-clockwise being positive. What is the magnitude of the equilibriant?
*Sunday, December 5, 2010 at 4:15pm*

**11th grade**

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.17 x 10^6 m/s. find the central force acting on the electron as it revolves in a circular orbit of radius 5.42 x 10^-11m.
*Sunday, December 5, 2010 at 3:33pm*

**11th grade**

so I have this problem and I dont know what numbers to multiple and whatnot. Can someone help me? This is the problem: 4000 g Fe2O3* 1mole Fe2O3/159.68 gFe2O3* 3mole CO2/1mole Fe2O3
*Thursday, December 2, 2010 at 4:18pm*

**11th grade**

a 1000 kg car has a motor that exerts 1500 N of force to move it forward. a frictional force of 400 N opposes it's forward motion. calculate the acceleration of this car
*Wednesday, December 1, 2010 at 11:16pm*

**11th grade**

A balloon at contains 0.5 L of gas at a constant pressure of 1.0 atm. If the pressure is increased to 3.0 atm, what will be the volume of the gas?
*Tuesday, November 30, 2010 at 8:10pm*

**11th grade**

A 625-kg racing car completes one lap in 14.3 s around a circular track with a radius of 50.0 m. The car moves at constant speed. (a) What is the acceleration of the car?
*Monday, November 29, 2010 at 9:01pm*

**11th grade**

which ons is stronger 1)A solid cylinder of 2)A hollow cylinser of iron 3) A cylinder made up of slits of iron
*Sunday, November 28, 2010 at 11:19am*

**11th grade**

accounts cash book find journal entries for. (1) discounted bill of rs .1000 at1% by bank (2) interest allowed by bank rs.5000
*Monday, November 22, 2010 at 11:18pm*

**11th grade**

The following data are weights of hummingbirds (in grams) randomly selected from a population. Which histogram best portrays this data set? (You may want to use your TI-83 to help you.)
*Wednesday, November 17, 2010 at 1:16pm*

**Physics 11th grade**

I have to determine the muzzle velocity of a toy gun by treating it as a horizontal projectile. What could be a possible hypothesis when a toy gun is shot 5 meters away from the bucket and the ball which was loaded in it is supposed to fall in?
*Wednesday, November 10, 2010 at 12:01am*

**11th grade physics**

how high above the surface of the Earth would an object need to be for its weight to be half its weight on the surface?
*Monday, November 8, 2010 at 1:09pm*

**11th grade physics**

if action and reaction are always equal and opposite, why dont they always cancel each other and leave no force for acceleration of the body?
*Monday, November 8, 2010 at 1:20am*

**11th grade**

A 7.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.8 N. Find the speed of the block after it has moved 2.8 m. Answer in units of m/s
*Sunday, November 7, 2010 at 11:48am*

**11th Grade AP English**

i have to wright an essay tomorro comparing The Great Gatsby and The Color of Water. Can anyone help me get some ideas/topics on what i should wright about?
*Thursday, November 4, 2010 at 1:40pm*

**11th grade physics**

You place a box with a mass of 20kg on an inclined plane that makes a 35.0° angle with the horizontal. What is the component of the gravitational force acting down the inclined plane?
*Tuesday, November 2, 2010 at 3:36pm*

**11th grade**

Sodium Vapor lamps emit a characteristic yellow light . What can we deduce about sodium atoms, based on this observation?
*Monday, November 1, 2010 at 6:59pm*

**11th grade**

volatile liquids with lower boiling points give better results than those with higher boiling points. suggest a reason for this.
*Sunday, October 31, 2010 at 4:30pm*

**11th grade**

When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 5.3 m/s2 as it slows from 9.5 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s
*Monday, October 11, 2010 at 11:33am*

**11th grade Algebra**

A number is multiplied by -3 and then this product is decreased by 7. The result is 4 less than twice the opposite of the number. what is the number?
*Sunday, October 3, 2010 at 8:42pm*

**11th grade**

How would I solve the following equation for x? 2 sin^2(x) + 3 tanx secx = 2 I've tried the problems from different approaches, but couldn't come up with a solution. Could you please provide your thought process. It would be greatly appreciated. Thanks!
*Friday, October 1, 2010 at 4:45pm*

**11th grade**

How many uranium atoms are there in 9.5 g of pure uranium? The mass of one uranium atom is 4 × 10−26 kg
*Thursday, September 30, 2010 at 9:13pm*

**H. Physics 11th grade**

while flying over the grand canyon, the pilot slows the plane down to one-half the velocity in item 3. If the wind's velocity is still 75 km/h toward the southeast, what will the plane's new resultant velocity be?
*Wednesday, September 29, 2010 at 8:14pm*

**11th grade**

An automobile with an initial speed of 4.56m/s accelerates uniformly at the rate of 2.4m/s2. Find the final speed of the car after 4.4 s. Answer in units of m/s.
*Tuesday, September 21, 2010 at 5:41pm*

**11th grade**

When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 3.8 m/s2 as it slows from 8.8 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s.
*Tuesday, September 21, 2010 at 5:36pm*

**11th grade**

When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 3.8 m/s2 as it slows from 8.8 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s.
*Monday, September 20, 2010 at 6:32pm*

**11th grade**

Suppose you surveyed 50 students and 34 said that they approve of how the president is doing. Construct 90%, 95%, and 99% confidence intervals for the true proportion of students in your school who approve of how the president is doing. Be sure to specifically calculate the ...
*Sunday, September 12, 2010 at 1:00am*

**11th grade**

The base of a pyramid is 10 cm high is the triangle shown. Find the volume of the pyramid. The hieght/leg of the traingle is 4 the base/leg is 6 and the hypothnues is 7.21
*Sunday, September 5, 2010 at 8:15pm*

**11th grade**

While driving his sports car at 20.0 down a four lane highway Eddie comes up behind a slow-moving dump truck abd decides to pass it in the left lane. If Eddie can accelerate at 5.00 m/s^2, how long will it take for him to reach a speed of 30.0 m/s?
*Wednesday, September 1, 2010 at 9:49pm*

**11th grade**

the measure of an angle is 8 degrees less than 3 times the measure of the angle's supplement. find the measure of each angle
*Monday, August 30, 2010 at 10:08pm*

**11th grade cytology**

It is a biological fact that a human being can live without food for a number of weeks. However, if deprived of water, a human being will die in approximately three days. Explain the large difference in time between these two facts.
*Friday, August 27, 2010 at 11:07pm*

**11th grade Chemistry 1**

If your weight is 120 pounds and your mass is 54 kilograms, how would those values change if you were on the moon? The gravitational force on the moon is 1/6 the gravitational force on Earth.
*Tuesday, August 24, 2010 at 6:35pm*

**11th grade**

in the distance you see an arch 192m. you estimate your line of sight with the top of the arch to be 8.4 degrees above the horizontal. appox how far in kilometers are you from the base of the arch?
*Sunday, August 22, 2010 at 6:57pm*

**12th grade maths**

how to present math in different angles which represents depth of subject,easiness,empowerment,basics,logic,analyze,view of subject from back,view from front.Give multiple e.g.s .(just 11th & 12th)
*Friday, August 20, 2010 at 7:05am*

**12th grade maths**

how to present math in different angles which represents depth of subject,easiness,empowerment,basics,logic,analyze,view of subject from back,view from front.Give multiple e.g.s .(just 11th & 12th)
*Friday, August 20, 2010 at 6:58am*

**11th Grade Physics**

A stone falls from a tower and travels 100m in the last second before it reaches the ground. Find the height of the tower
*Thursday, August 5, 2010 at 12:37pm*

**11th Grade Physics**

The maximum speed of a bus is 72km/h, it accelerates uniformly at the rate of 1m/s^2 and retards uniformly at the rate of 4m/s^2. Find the least time in which it can do a journey of 1km ?
*Tuesday, July 27, 2010 at 9:02am*

**11th grade Physics**

Difference between Atomic spectrum and emission spectrum. First give me the clear cut definition of both and then the difference!!!
*Saturday, July 24, 2010 at 2:28pm*

**11th Grade Physics**

A rocket is fired vertically from the ground with a resultant vertical acceleration of 10ms^-2. The fuel is finished in 1 minute and it continues to move up. What is the maximum height reached? Solve it!!! N Please solve it as i've to copy it in my correction notebook it&#...
*Thursday, July 22, 2010 at 2:17pm*

**Maths 11th Grade**

The difference between the two acute angles of a right-angled triangle is 2(pie)/5 radians. Express the angles in degrees?? How to Solve it
*Wednesday, July 21, 2010 at 1:25pm*

**Grade 11th Maths**

(Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A'
*Sunday, July 4, 2010 at 7:49am*

**Grade 11th Maths**

(Second Time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø
*Sunday, July 4, 2010 at 7:48am*

**Grade 11th Maths**

(Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AUB=Ø, then prove that A=Ø,B=Ø
*Sunday, July 4, 2010 at 7:48am*

**Grade 11th Maths**

This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AUB=Ø, then prove that A=Ø,B=Ø
*Tuesday, June 29, 2010 at 7:12am*

**Grade 11th Maths**

This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø
*Tuesday, June 29, 2010 at 7:11am*

**Grade 11th Maths**

This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A'
*Tuesday, June 29, 2010 at 7:09am*

**Grade 11th Chemistry**

How many molecules of water and oxygen atoms are present in 0.9g of Water. this numerical is based on Mole Concept. Kindly solve it!!!
*Monday, June 28, 2010 at 1:55pm*

**math 11th grade**

If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?
*Saturday, June 26, 2010 at 7:42pm*

**11th Grade Physics**

I want two examples based upon law of conservation of charge i know the definition just want two examples!!!
*Friday, June 25, 2010 at 7:39am*

**11th grade**

write an expression that represents the width of a rectangle with length x+5 anmd area x to the 3 power + 12x to the 2nd power+ 47x+60
*Monday, May 24, 2010 at 11:38pm*

**Physics 11th grade**

A) What is the intensity of sound at 148 dB? Units: W/m^2. I found this to be 630.9573445 using Io*10^B/10 in which B= 148 dB. B)Compare it to that of a whisper at 20 dB. Using the same formula i find this to be 1e-8 but it is marked as wrong. Please help with B!
*Friday, May 21, 2010 at 8:26pm*

**11th grade English**

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?
*Sunday, May 16, 2010 at 3:32am*

**11th grade Physics**

A student makes a magnet by winding wire around a nail and connecting the wire to a battery. Which end of the nail will be the north pole?
*Wednesday, May 5, 2010 at 8:38am*

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Post a New Question | Current Questions