Saturday

September 20, 2014

September 20, 2014

Post a New Question | Current Questions

**12th grade**

How much current flows in a 12 watt rad?io connected to a 120-Volt circuit
*Monday, June 29, 2009 at 10:42pm*

**senior courses**

this is a reply to Ms.Sue's question yesterday. my college and career goals are to do with Foods. cooking, culinary arts .. but i don't think that i can chose my next year (12th grade) courses according to that, can i? those are my plans for college right now i'm ...
*Wednesday, April 29, 2009 at 10:59am*

**12th grade**

If an economy has elements of more than one economic system. it is a ________.
*Thursday, April 16, 2009 at 4:10pm*

**12th grade chemistry**

Calculate the number of grams in the following :[149.096 g/mole] 8.55 moles of (NH4)3PO4 IT WOULD BE NICE IF I CAN GET STEP BY STEPS TO GET ANSWER !!!
*Monday, March 30, 2009 at 6:32pm*

**12th grade**

Ode on a Grecian urn What does "all breathing human passion far above" mean in line 28?
*Tuesday, March 3, 2009 at 2:22am*

**12th grade**

what mass of copper may be produced when excess CuSO4 is reacted with 100g of aluminum metal?
*Monday, February 23, 2009 at 2:21pm*

**12th grade Data**

In this sequence, tk is a factorial number, often written k!. Show that tk=k!=k(k-1)(k-2)...(3)(2)(1)
*Monday, February 23, 2009 at 12:43pm*

**12th grade**

whick is a positive connotaion of the word inactive? a)lazy B)passive C)relaxed d)slacked
*Friday, February 20, 2009 at 8:06am*

**12th grade**

Write the chemical equation for Sulfiric Acid and potassisum sulfate the product is potassium sulfate and water.
*Monday, February 16, 2009 at 10:55pm*

**12th grade**

A particle starts at x=0 and moves along the x-axis with velocity v(t)=2t+1 for time t is less than or equal to 0. Where is the particle at t=4?
*Tuesday, January 6, 2009 at 9:28pm*

**12th grade history**

Why did the Roman Catholic reform leaders believe that the fundamental aspect of improving the Church was to enhance the performance of the clergy?
*Wednesday, December 17, 2008 at 10:00pm*

**12th grade (Law)**

Could you tell me some information about NATO? I have to do a project for my law course and need to know how it impacts the world.
*Monday, December 15, 2008 at 9:18pm*

**12th grade chemistry!!**

Where on the periodic table would you find elements that ionize to form cations and anions?????
*Sunday, December 7, 2008 at 11:59am*

**12th grade calculus**

let f(x)=x^2 1. show that the line tangent to the graph of f at the point (1,1)is y=2x-1
*Sunday, November 16, 2008 at 10:22pm*

**12th grade calculus**

a marathoner ran the 26.2-mi New York City marathon in 2.2h. show that at least twice, the marthoner was running at exactly 11 mph
*Thursday, November 6, 2008 at 8:06pm*

**12th grade calculus**

find the derivative of y with respect to the appropriate variable y=sec^-1*5s
*Sunday, October 19, 2008 at 8:37pm*

**12th grade calculus**

find the derivative of y with respect to the appropriate variable. y=sin^-1ã2t ã =radical
*Sunday, October 19, 2008 at 8:34pm*

**12th grade calculus**

find the lines that are (a) tangent and (b) normal to the curve at teh given point x^2 + xy - y^2 = 1
*Sunday, October 19, 2008 at 7:23pm*

**12th grade**

How is the structure of the female and the male reproductive system suitable for their functions? Please reply soon!!! Thanks.
*Thursday, October 16, 2008 at 6:06pm*

**12th grade**

I'm having trouble ordered triple in algebra 2 w/ trigonometry, could someone please hellllllllllllllllllp me!
*Monday, October 13, 2008 at 9:03pm*

**12th grade Math?**

How would you factor 3x^3-4x^2+4x-1? P.S. Factor theorem does not work here.
*Sunday, October 12, 2008 at 11:48pm*

**12th grade**

Think of a business in your local area. Describe its operation in terms of factor markets and product markets.
*Sunday, September 21, 2008 at 2:34pm*

**12th grade**

In statistic: How to construct a duble steam display for the minutes it took the mailperson to deliver mail as listed: 80 68 56 64 69 70 64 70 62 73 69 82 62 58 63 65 67 54 71 61 67 75 70 66 62 73 59 58 78
*Saturday, September 20, 2008 at 9:22pm*

**12th grade math!!!**

what is the prime power factorizatopn of 554 706 758 514 844 830 788 677
*Wednesday, September 17, 2008 at 7:35pm*

**12th grade Science**

A bud covers the bloom but when it erupts it holds up the flower from underneath find the name it’s divided into together and alone? -thanks-
*Wednesday, September 10, 2008 at 4:03pm*

**12th grade**

Which one of the following items is an example of a symbol in "Bernice Bobs Her Hair
*Wednesday, September 10, 2008 at 2:08pm*

**12th grade**

Given that x is an inetger, state the relation representing each equation by making a table of values. y=3x+5 and -4<x<4
*Wednesday, September 3, 2008 at 9:25pm*

**12th grade**

Why is it difficult to recognize the worth and dignity of all individuals at all times?
*Wednesday, September 3, 2008 at 5:33pm*

**12th grade**

determine teh number of ways arranging the letters in the word handle if there are no restrictions?
*Thursday, August 28, 2008 at 7:47pm*

**12th grade**

IN THE BOOK LYDDIE HOW DID THE FAMILY ESCAPE THE BEAR INTRUSION?
*Monday, August 25, 2008 at 10:12pm*

**12th grade government/economics**

what margin is required to choose the president?
*Sunday, August 24, 2008 at 10:24pm*

**12th grade government/economics**

If no candiate for the presidency wins a simple majority of the total number of electoral votes, what body has the power to choose the president?
*Sunday, August 24, 2008 at 10:23pm*

**12th grade government/economics**

what are two ways that amendments to the constitution can be ratified?
*Sunday, August 24, 2008 at 10:22pm*

**12th grade government/economics**

what are two ways that amendments to the constitution can be proposed?
*Sunday, August 24, 2008 at 10:21pm*

**12th grade government/economics**

The Constitution specifies a three-fourths marjority for just one process. what?
*Sunday, August 24, 2008 at 10:07pm*

**10th grade math**

1.548937075 x 10 to the 12th. round the number to 3 significat figures. I thought I would respost this because the other one was getting confusing
*Tuesday, August 19, 2008 at 8:56pm*

**Math - PreCalc (12th Grade)**

The function f(x) = 6x + 5 is defined over the interval [-1, 4]. If the interval is divided into n equal parts, what is the value of the right end point of the first rectangle?
*Friday, March 21, 2014 at 11:42am*

**Math - PreCalc (12th Grade)**

How many 4-digit numbers are possible if the hundreds digit is 8 and if repetition of digits is allowed? A) 100 B) 1,000 C) 9,000 D) 900 E) 1,800
*Friday, March 21, 2014 at 11:08am*

**Math - PreCalc (12th Grade)**

The function f(x) = x2 − 5 is defined over the interval [0, 5]. If the interval is divided into n equal parts, what is the area of the kth rectangle from the right? A) [(2+k(5/n))^2+5](5/n) B) [(k(3/n))^2−5](5/n) C) [(k(5/n))^2+5](5/n) D) [(k(3/n))^2+3](5/n) E) [(k...
*Friday, March 21, 2014 at 10:53am*

**Math - PreCalc (12th Grade)**

The function f(x) = 2x + 1 is defined over the interval [2, 5]. If the interval is divided into n equal parts, what is the value of the function at the right endpoint of the kth rectangle? A) 2+3k/n B) 4+3k/n C) 4+6k/n D) 5+6k/n E) 5+3k/n
*Friday, March 21, 2014 at 9:57am*

**Math - PreCalc (12th Grade)**

If Sn = 1 + 6 + 11 + 16 + 21 + 26...... where an = (5n − 4), what would be the mathematical expression represented by Sk + ak + 1? A) (k(5k − 3)/2)+ 5k + 1 B) (k(5k − 3)/2)+ 5k − 4 C) (k(5k − 3)/2)+ 5k + 2 D) (k(5k − 3)/2)+ 5k − 3 E) (...
*Thursday, March 20, 2014 at 1:05pm*

**Math - PreCalc (12th Grade)**

What value must be defined for f(4) to remove the discontinuity of this function at x=4? f(x)=(x^2−16)/(x−4) A) 0 B) 4 C) -4 D) 8 E) -8 f(4)=(4^2−16)/(4−4) f(4)=0/0 you can't divide by zero. I don't understand the question.
*Thursday, March 20, 2014 at 12:38pm*

**Math - PreCalc (12th Grade)**

If Sn represents the sum of the squares of the first n natural numbers, use proof by induction to find which of the following expressions for Sn is true? A) Sn = n(n − 1)/3 B) Sn = n(2n − 1)/3 C) Sn = n(n + 1)/3 D) Sn = n(n + 1)(2n + 1)/3
*Thursday, March 20, 2014 at 12:23pm*

**Math - PreCalc (12th Grade)**

What does this function show at x = 5? f(x)=x^2−25/x−5 A) removable discontinuity B) jump discontinuity C) infinite discontinuity D) continuity E) none of the above
*Wednesday, March 19, 2014 at 12:00pm*

**Geometry/Algebra 1/12th grade **

Find the value of x. Round u'r answer to the nearest hundredth, if necessary. Area of triangle=108m^2 A=1/2 bh b=(x+6)m h=xm So, 108m^2=1/2 ((x+6)m)(xm) 108m^2=1/2 m^2+x^2+6???? If so then what? Sub m^2 from the left side?? Then what? :/
*Friday, August 30, 2013 at 2:19pm*

**Poetry/British Literature/12th grade **

Which of the following poems is a dramatic monologue? (A) "My Last Duchess" (B) "Love Among the Ruins" (C) Childe Roland to the Dark Tower Came (D) all of these
*Tuesday, August 27, 2013 at 4:13pm*

**Adv Chem 12th grade**

4. Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name. • RbF • CuO • (NH4)2C2O4 (Note: C2O4– is called oxalate.)
*Wednesday, December 19, 2012 at 7:34pm*

**Math**

The volleyball court -if it id 80 ft long and 50 ft wide, how would you find the dimensions of the court? Explain please! Remember that I am a 6th grader. Please don't give me a 10-12th grade answer.
*Monday, September 24, 2012 at 8:50pm*

**12th grade math**

a block of mass 77kg is placed at the top of a frictionless plane that is inclined 46degrees to the horizontal. The height of the plane is 23 meters. find the speed of the block at the bottom of the plane. Show the steps please, -thanks
*Monday, June 11, 2012 at 8:17pm*

**Physics(12th grade)**

When the temperature of a gas in a vessel is increased by 1C then the pressure is increased by 0.5%. what will be its initial temperature?
*Monday, April 9, 2012 at 12:52am*

**Physics (12th Grade)**

When an ideal diatomic gas is heated at constant pressure then what fraction of heat given is used to increase internal energy of gas?
*Monday, April 9, 2012 at 12:49am*

**Physics (12th Grade)**

In a certain process 500 cal of heat is given to a system and the system does 100J of work. What will be the increase in internal energy of the system?
*Monday, April 9, 2012 at 12:27am*

**Physics (12th Grade)**

The isothermal bulk modulus of elasticity of a gas is 1.5 * 100000 N/m^2. What will be its adiabatic bulk modulus of elasticity? Given the ratio of Cp/Cv=1.4
*Monday, April 9, 2012 at 12:20am*

**Physics (12th Grade)**

The isothermal bulk modulus of elasticity of a gas is 1.5 * 100000 N/m^2. What will be its adiabatic bulk modulus of elasticity?
*Sunday, April 8, 2012 at 1:15pm*

**math**

On a map of downtown, 12th street is perpendicular to Avenue J. The equation y=-4x+3 represents 12th street. What is the equation representing Avenue J if it passes through the point (8,16)?
*Thursday, January 5, 2012 at 11:29pm*

**12th grade physics**

A person pulls a wagon through thick grass with a force of 800 N. The angle that the handle makes with the ground is 35. How much force moves the wagon forward?
*Monday, September 26, 2011 at 6:40pm*

**Calculus 12th grade.**

1. A body is moving along a straight line with a velocity which varies according to the equation v=9t^2+2t, where v is in feet per second and t is in seconds. Find the expression for the distance as a function of time. A. 3t^3+t^2+C B. 3t^3+2t^2+C C. 18t+C D. 20t+C My answer ...
*Saturday, March 5, 2011 at 10:04pm*

**12th grade Trigonometry **

Solve this trigonometric equation.give all positive values of the angle between 0deg and 360deg that will satisfy. Give any approximate value to the nearest minute only. 3 sin theta - 4 cos theta = 2
*Friday, March 4, 2011 at 6:31am*

**12th grade chemistry**

How many molecules of water can be made from 9.21 x 10^22 molecules of hydrogen sulfate? The equation is 2Fe(OH)3 + 3H2SO4 -> Fe2(SO4)3 + 6H2O
*Wednesday, March 2, 2011 at 12:04am*

**12th grade, Advance Algebra**

How to press the value of log, to evaluate log, to find the unknown log using EL-531WH, advance D.A.L
*Sunday, February 27, 2011 at 6:48am*

**12th grade chemistry**

If the reaction below proceeds with a 96.8% yield, how many kilograms of CaSO4 are formed when 5.27 kg SO2 reacts with an excess of CaCO3 and O2? 2 CaCO3(s) + 2 SO2(g) + O2(g) 2 CaSO4(g) + 2 CO2(g)
*Thursday, January 27, 2011 at 10:34pm*

**Physics 12th Grade**

An archer puts a 0.34 kg arrow to the bowstring. An average force of 220 N is exerted to draw the string back 1.3 m. Assume that air resistance is negligible. If the arrow is shot straight up, how high does it rise? I am confused at how to find the distance that it will rise.
*Wednesday, January 5, 2011 at 12:07pm*

**12th grade**

one type of probability used everyday is: a)experienced probability b)scientific probability c)frequency of occurence d)none of the above
*Wednesday, December 15, 2010 at 9:20pm*

**12th Grade Calculus **

Find d^2y/dx^2 by implicit differentiation. x^(1/3) + y^(1/3) = 4 I know that first you must find the 1st derivative & for y prime I got 1/3x^(-2/3) + 1/3y^(-2/3) dy/dx = 0 Then for dy/dx I got dy/dx = [-1/3x^(-2/3)] / [1/3y^(-2/3)] I think that from here I would use the ...
*Tuesday, December 14, 2010 at 10:15pm*

**12th grade**

Objects on the moon's surface have an acceleration due to gravity one-sixth that on the earth's. What would the 40 kg boy weigh on the moon? (Round answer to nearest tenth.)
*Thursday, December 9, 2010 at 10:38am*

**12th grade PYSICS**

A 45.7-kg boy on a swing moves in a circular arc of radius 3.80 m.At the lowest position, the child's speed reaches 2.78 m/s. Determine the magnitude of the tension in each of the two vertical support chains. i used mv^2/r, but i keep getting the answer wrong. the answer ...
*Sunday, November 7, 2010 at 6:57pm*

**12th grade**

Solve & plot a graph for the following: F(X)=cos(X)-cos to second power X for the interval negative pi greater than or equal to X less than or equal to positive pi
*Saturday, November 6, 2010 at 8:33pm*

**12th grade (physics)**

a car with bad shock absorbers bounces up and down with a period of 0.731s after hitting a bump. The car has a mass of 1850kg and is supported by four springs of equal force constant k. Determine a value for k. Answer in units of N/m. if you can, could you explain how to get ...
*Thursday, October 28, 2010 at 7:27pm*

**12th grade**

A cubic box of volume 4.0 multiplied by 10-2 m3 is filled with air at atmospheric pressure at 20°C. The box is closed and heated to 160°C. What is the net force on each side of the box?
*Wednesday, October 20, 2010 at 4:26pm*

**12th grade**

a marble that is rolling across a lab table has a velocity of 0.7m/s. If the table is 0.9m high, how far from the edge of the table will the ball travel in the horizontel direction before it hits the floor ?
*Monday, October 18, 2010 at 7:08pm*

**12th grade art**

Will someone plz help me. I have looked through website after website and I cant find the right peron. Just like a page address or something or explain about his works and his life. Please and thanks!
*Tuesday, October 5, 2010 at 8:13pm*

**12th grade Calculus**

It says find the numbers, if any, at which the given function is discontinuous. f(x)=abs(x+2) *abs - absolute value f(x)=e^xsinx for both of these problems i saw that it was continuous but i don't really know
*Tuesday, October 5, 2010 at 6:15pm*

**12th grade**

If a car is accelerating downhill under a net force of 3674, what additional force would cause the car to have a constant velocity?
*Sunday, October 3, 2010 at 7:52pm*

**12th grade**

bikes tyre filled with air pressure=6 atm =6x10^5 Pa on tempreture 20c = 20+273 = 293 K.. we used the bike on tempreture at 45 c the volume increase by 2%. find the new volume?PV=nRT
*Sunday, September 26, 2010 at 4:54pm*

**12th grade physics**

Helium is monatomic with a relative atomic mass of 4. calculate (i) the density of helium gas at a temperature of 0 degrees Celsius and a pressure of 101kPa and (ii) the rms speed of the helium atoms under these conditions
*Monday, September 20, 2010 at 11:59am*

**12th grade - Advanced Functions**

the height, h, in meters, of a gold ball t seconds after is is hit can be modelled by the function: h (t) = 4.9t^2 + 32t + 0.2. When is the height of the ball 15 m?
*Monday, July 19, 2010 at 9:54pm*

**12th grade**

If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units.
*Thursday, July 15, 2010 at 1:12pm*

**12th grade**

80,000+38250+26,500-(16/100)(80,000+38250) WHAT IS THE ANSWER AND HOW DID YOU GET IT \
*Sunday, July 4, 2010 at 4:04pm*

**12th grade**

gaseous ammonia is made by the following reaction: N2+3H2 - 2NH3. if you start with 7 liters on nitrogen gas, how many liters of hydrogen are needed for a chemical reaction?
*Monday, June 14, 2010 at 11:21am*

**12th grade**

Does the size of a 1,5V cell(battery) affect the internal resistance of a circuit containing: 3 different size batteries,multimeter,connecting wire,a light bulb resistor.How do i set up this experiment.I'm really lost, please help. Thank you in advance
*Saturday, May 22, 2010 at 3:18pm*

**12th grade Shakespeare**

"O, what a rogue and peasant slave am I!" -Hamlet (Act II, ii) What are two interestin ways that Shakespeare uses language in this soliloquy?
*Tuesday, May 18, 2010 at 8:16pm*

**12th grade Project work**

How can I prepare a beautifully decorated hand made file on a project work for school?
*Monday, May 3, 2010 at 10:46am*

**12th grade**

How would one distinguish successful from unsuccessful assertions of judicial power? What is it that puts Marbury in one class and Dred Scott in another?
*Monday, April 12, 2010 at 10:39pm*

**12th grade**

The radioactive isotope of Carcon (^14C)has a half life of 5730. What is the decay constant of ^14C? If we start with a sample of 1000 carcon nuclei, how many will be left in 22920 years time?
*Thursday, April 8, 2010 at 12:34pm*

**12th grade**

I need help paraphrazing a section from Robert Browning's poem "My Last Duchess" here it is : Fra Pandolf chanced to say "Her mantle laps Over my lady's wrist too much,"
*Thursday, March 18, 2010 at 9:54am*

**12th grade economics**

Frank wants to buy a $10,000 car. The car dealer offers him financing of 60 payments at 9% interest. What will his payments be assuming he pays $0 down?
*Sunday, March 14, 2010 at 4:00pm*

**12th grade**

the constitution was written in order to establish a stronger central government that that provided by the articles of confederation, however the whole point of th american revolution was to renounce an oppressive central authority. explain this apparent reversal in the ...
*Wednesday, March 3, 2010 at 9:32pm*

**12th grade A.P. Government**

My teacher has selected us to be in particular groups and I am a conservative. So I need to address Education and state the issues like how a conservative would. But I have no idea about it. Can someone please help me??? Please....
*Tuesday, January 12, 2010 at 7:54am*

**12th grade Physics**

charges of +1.000 C are located at the corners of a 45-45- right triangle which has a hypotenuse that is 1.414 m long. Determine the resultant force on the charge located at the vertex of the right angle.
*Tuesday, December 15, 2009 at 8:41pm*

**12th grade Physics**

the force between two charges is 20.0 N. if one charge is doubled, the other is tripled, and the distance between them is halved, calculate the resultant force between them.
*Tuesday, December 15, 2009 at 8:32pm*

**12th grade Politics**

United States is the only sizable industrialized country that does not have a socialist party as a major source of power. Why is this??? Can someone please give me some points or reasons??? Thank you!!
*Wednesday, November 4, 2009 at 10:47am*

**12th grade Advanced Functions**

A generator produces electrical power, P, in watts, according to the function: P(R)= 120/ (0.4 + R)^2 where R is the resistance, in ohms. Determine the intervals on which the power is increasing.
*Sunday, October 25, 2009 at 7:50pm*

**12th grade chemistry**

Thanks for your answer DrBob. I am still stumped.The question I was asked to answer is Do acetic acid and stearic acid undergo controlled oxidation reactions? Explain why/why not and draw an equation to illustrate the answer.
*Sunday, October 4, 2009 at 4:53pm*

**12th grade A.P. Economics**

which of the following is the most essential for a market economy? 1.) functioning labor unions 2.) good government regulation 3.) active competition in the marketplace. 4.) responsible action by the business leaders. I think its choice no. 3, am i right?
*Sunday, September 13, 2009 at 6:10pm*

**12th grade**

which does suzuki in "hidden lessons" explore more thoroughly, the causes of children's negative or positive attitudes toward nature or the effects of these attitudes?
*Tuesday, July 14, 2009 at 12:06am*

**12th grade English**

How does Saki in "The image of the lost soul" use descriptions of places to reach desired effect in story? Can anyone tell me how? an example form the text would be helpful
*Thursday, July 2, 2009 at 11:50am*

**12th grade AP Economics**

Making a list of what you would consider the most important trade-offs of spending more money on air-travel safety. Can someone please help me!!!
*Wednesday, July 1, 2009 at 4:10pm*

**12th grade**

Penn Foster Examination #93051 Cooking Appliances I've gotten 16 out of 25 completed but I'll just post the whole exam to make sure I have THOSE right. Thanks for your help guys!
*Saturday, May 23, 2009 at 4:13pm*

**12th grade- Trigonometry**

Find the exact value of each expression Cos^-1(0) Tan^-1 sqrt(3)/3 Sin^-1(1) Since the expressions are capitalized, I'm not sure if I have to do anything different. Any help is appreciated.
*Thursday, May 14, 2009 at 9:04pm*

**12th grade**

List 3 problems of Decentralized power that existed under the Articles of Confederation. For each problem, identify one solution that the Constitution provided to address the problem.
*Thursday, February 5, 2009 at 9:54pm*

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