Thursday

August 27, 2015
Total # Posts: 338

**Math**

A 40lb child sits at one end of a teeter-totter-totter which is 12 feet long and has the fulcrum in the center. How many feet from the fulcrum should a 60 lb child sit so the teeter-totter will balance?
*August 20, 2015*

**physics**

The pressure in the room also increased when the temperature increased, because pressure is ___________ to temperature.
*June 11, 2015*

**Chemistry**

How much time a 250 watt heater takes to heat up 1 kg of water from 20 degree c to 50 degree c?
*June 9, 2015*

**Chemistry**

A beaker contains 50 gm water at 20 degree c.How much water having temperature 60 degree C should be added to have an equilibrium temperature of 40 degree c?
*June 9, 2015*

**Chemistry**

thank you!!!!
*May 5, 2015*

**Chemistry**

Calculate the value of the equilibrium constant for the following reaction: PbI2 (s) + 2I- (aq) <-> PbI4 ^ 2- (aq) The solubility product constant Ksp for PbI2 is 9.8e-9 and the formation constant Kf for PbI4^2- is 3.0e4 I have Ksp=[PbI4^2-] Kf= [PbI4^2-] / [PbI2][I-]^2 ...
*May 5, 2015*

**Chemistry**

I have no idea how to do this like idk I'm really confused with this question..
*May 2, 2015*

**Chemistry **

Use the info below to calculate how much it would cost you to produce 500g of NiSO4*6H2O . don't forget to include the cost of the original nickel token . Na2CO3*H2O costs $6.58/3 kg 6 M H2SO4 costs $12.65/5L 9 M HNO3 costs $10.53/2.5L Show clearly how you obtained your ...
*May 2, 2015*

**Socials 1 question**

How does birth control affect our world population? Please give me a list of ideas, no sites please I know it helps reduce population growth rate but please tell me more about countries who don't have birth control and what it results in etc.. Thanks :)
*April 7, 2015*

**Chemistry**

The density of air is about 1.29g/l at standard temp and pressure . Would carbon dioxide rise up or sink in the atmosphere ? Thanks:)
*March 13, 2015*

**math**

the question says solve for x x+3/5+4x/15=x-7/3
*January 19, 2015*

**Math**

Two numbers-- Their greatest common factor is 3. Their least common multiple is 90. How many answers are possible? Explain.
*December 19, 2014*

**physics**

A car is moving at 36 miles per hour. The kinetic energy of that car is 5 × 105 J. How much energy does the same car have when it moves at 115 miles per hour? Answer in units of J
*December 12, 2014*

**Physics**

A block is at rest on an inclined plane. The mass is 44 kg. µs = 0.54 Find the critical angle, θc, at which the block just begins to slide. Answer in units of ◦
*December 7, 2014*

**algebra**

A sausage sample was found to contain 65% moisture, based on fresh weight. The sausage was dried in an oven until its moisture content was 10% . A 2.0 g portion of the dried sausage was extracted with the Soxhlet method to determine the amount of crude fat. A clean Soxhlet ...
*November 29, 2014*

**Physics**

I don't understand how to do this : A force of 40 N accelerates a 7.17 kg block at 6.0 m/s2 along a horizontal surface. Determine the normal.
*November 25, 2014*

**English**

Ahhhh just submmitted the test- the third answer was wrong :( The final answer must be "states the primary basis for the act".
*November 19, 2014*

**English**

Hmm... I am stuck on that as well for flvs! :( I think it would be either the third or the fourth one. What did you get??
*November 19, 2014*

**Math**

I need help with my hw
*November 11, 2014*

**physics**

A ball is kicked at a 45* angle over a 6 ft fence 20 m away at 17 m/s. How far above the fence will the ball pass? No air resistance
*November 9, 2014*

**physics**

During a baseball game, a batter hits a pop-up to a fielder 92m away. The acceleration is 9.8 m/s^2. If the ball remains in the air for 5.8 seconds, how high does it rise?
*November 9, 2014*

**Algebra 1**

Thank you.
*October 16, 2014*

**Algebra 1**

I did this conversion problem, but I think it's incorrect. Problem: A bread slicer runs 20 hours per day for 30 days and slices 144,000 loaves of bread. How many loaves per minute are sliced? I did 20hr/1days times 30days/600hrs times 1hr/60mins times 144000 loaves/30days....
*October 16, 2014*

**Math quick question!**

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the path is concrete, ...
*September 28, 2014*

**Math **

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the path is concrete, ...
*September 28, 2014*

**Math URGENT!!**

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the path is concrete, ...
*September 28, 2014*

**Math **

This year, Ms. Nelson's class has 20 students. Which of the following statements must be true? I. This year at least two of these students have their birthdays on a Sunday. II. This year at least two of these students have their birthdays on the same day of the week III. ...
*September 24, 2014*

**PHILOSOPY**

HILL WOULD CLAIM THAT A LACK OF AESTHETIC PERCEPTION MIGHT INDICATE
*September 22, 2014*

**math**

A metal sphere has a mass of 1 kg. 1 cubic centimeter of this metal has a mass of 4.8 grams. find the radius. how do you work this out?
*September 22, 2014*

**history**

what are the major settlements of the 13 colonies? I know Plymouth is MA's and Jamestown is Virginia's
*September 7, 2014*

**English Check my answers please**

Having same problems with these did you get them right?
*September 2, 2014*

**Biology**

Today many different species of tortoise may be found in he Galapagos islands. Using your knowledge of evolution, explain how these many specues arose from one common ancestor?
*June 18, 2014*

**math**

Sorry, my question is worded confusingly. so, there are two diagonals on the kite. the shortest diagonal is 18 cm total. the longest diagonal has only part of the length given which is 12 cm, I need to find the length of the other part. is there any way that I can post a ...
*May 11, 2014*

**math**

I think so too; there wasn't an angle give
*May 11, 2014*

**math **

I have to find the area of a kite. I am only given part of the longest diagonal (12 cm) and half of the other diagonal (9 cm). I know the formula is diagonal 1 times diagonal 2 times 1/2. I have the length for one diagonal which is 18 cm b/c 9+9. How can find the length of the...
*May 11, 2014*

**biology**

what are three ways that DNA mutation can alter genetic material?
*April 30, 2014*

**ela**

Is there another word/phrase for the value "treat others the way you want to be treated"?
*April 28, 2014*

**biology**

Give the phenotype and genotype for the F2 generation of a person with Type a heterozygous blood and a type O blood type. Remember to use all possible parents. Using Punnett squares I got 50% type a blood and 50% type o blood is this right??
*April 2, 2014*

**history**

I wrote a DBQ on the industrial revolution, this is part of it: During the Industrial Revolution, the upper class lived without struggle, yet the working class suffered endlessly through dangerous working conditions. This demonstrates the impact Industrialization had on the ...
*April 1, 2014*

**geometry**

is every composition of transformations cumalitive? In other words, does the order matter? I think it depends on transformation, but I'm not sure
*March 25, 2014*

**math**

The deck in Hope's backyard is round. It has 5 posts evenly spaced around the edge to support a trellis. For her birthday party, she wants to connect each post to all the other posts with crepe-paper streamers. How many streamers will she report?
*March 24, 2014*

**Math**

hope's mom baked a cake for hope's birthday. It is in the shape of a rectangle 10 inches long and 6 inches wide. If she starts at one corner and puts a candle every 2 inches, how many candles will fit around the edge of the cake?
*March 24, 2014*

**material balance**

In a process for concentrating 1000kg of freshly extracted orange juice containing 12.5 wt% solids, the juice is strained, yielding 800kg of strained juice and 200kg of pulpy juice.the strained juice is concentrated in a vacuum evaporator to give an evaporated juice of 58% ...
*March 23, 2014*

**history**

"Such is the Old Town of Manchester, and on re-reading my description, I am forced to admit that instead of being exaggerated, it is far from black enough to convey a true impression of the filth, ruin, and uninhabitableness, the defiance of all considerations of ...
*March 14, 2014*

**biology**

thank you!!
*March 11, 2014*

**biology**

I'm doing a lab report for a cellular respiration experiment. My experiment involves blowing/exhaling CO2 into Bromothymol blue solution until it turns yellow, then adding drops of Nh3 (ammonia) to turn it back to its original blue color. I'm seeing if the amount of ...
*March 11, 2014*

**history**

The first link has what I'm looking for, thank you!
*February 12, 2014*

**history **

What was Napoleon Bonaparte's impact on Europe and on the world? I would say that it contributed to the rise of democracy, even though Napoleon ruled as a dictator.
*February 12, 2014*

**Summer Reading**

I didn't read my books because I didn't have English until after Christmas. I can't find my list, but I know all the ones I'm supposed to read except for one. I know this book is called "Fish." Do you have any idea who it might be by?
*January 7, 2014*

**math pleasethank u Damon**

thanks
*January 6, 2014*

**math please**

1.Give a linear function with its zero at x=a, what is the equation of the vertical asymptote of its reciprocal function? 2.Give a quadratic function with its zeros at x=a and x=b, what are the equations of the vertical asymptotes of its reciprocal function? 3.Once you know ...
*January 6, 2014*

**history current events**

What is Iran's position on stateless people? Also, are there any links or resources where I can find information about this?
*December 13, 2013*

**world history**

Why did Joseph II grant religious tolerance? What was the purpose?
*December 8, 2013*

**Chemistry**

So does [mols NaOH = mols KHP] mean that the values of one is equal to the other?
*October 17, 2013*

**Chemistry**

A sample of 1.018 g of KHP (potassium hydrogen phthalate, molar mass = 204.22 g/mol) was dissolved in ~ 25 mL distilled water and titrated with a NaOH solution of unknown concentration. If 28.69 mL of base was used to reach the endpoint, what was the concentration of the NaOH...
*October 17, 2013*

**AP Chemistry**

156.37
*October 15, 2013*

**Math To: Reiny**

Nevermind, Thank you for all your help, and I am just going to write the numbers. Thanks so much :)
*September 18, 2013*

**Math To: Reiny**

no im talking about the simplifying questions, I have to do it this way for exaple: square root of 50= 5*square root of 2. cant just write a number down.
*September 18, 2013*

**Math To: Reiny**

I cant do it this way, I have to do it this way: for exaple: square root of 50= 5*square root of 2.
*September 18, 2013*

**Math To: Reiny**

its to the power of -5/2 and I'm supposed to put it in a radicand so I think im right? and please help me with my other questions!!! I have tried so much
*September 18, 2013*

**Math To: Reiny**

I thought you would add the x and y's ? And can you please help me with these: I begging you!!!! I've tried so much and can't do it!!! simplify sqaure root of 160000 simplify sqaure root of 0.04 simplify 3 * square root 81 simplify square root of 900 simplify ...
*September 18, 2013*

**Math To: Reiny**

for the 4^-5/2 I got 1/ 2* square root of 4^5
*September 18, 2013*

**Math To: Reiny**

for this one: 12) (10xy^3) (3x^2y^2) (5x) (2y) I got (12) 18x^2 3y^5 and do you know what 4^-5/2 expressed as a radical with positive exponents would be, I did read your reply but I keep getting those questions wrong so can you please show me how to do them
*September 18, 2013*

**Math To: Reiny **

This is one whole question: (12) (10xy^3) (3x^2y^2) (5x) (2y) I don't know how to do any of these: simplify sqaure root of 160000 simplify sqaure root of 0.04 simplify 3 * square root 81 simplify square root of 900 simplify square root of 0.0025 simplify [(a^2bc^4)(ab^3c^2...
*September 18, 2013*

**Math Please Urgent **

Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure root of 160000 simplify...
*September 18, 2013*

**Math Ms. Sue**

Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure root of 160000 simplify...
*September 18, 2013*

**Math**

Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure root of 160000 simplify...
*September 18, 2013*

**English 3 questions**

How does cost determine which financial choice you make? What would your life be like without taxes? What are your choices to finance (pay for) a major purchase like your first car? thanks
*July 16, 2013*

**Algebra 2 help **

Consider the following functions. f(x) = x2 − 3x, g(x) =√(x+2) (a) Find (f *g)(x). (Simplify your answer completely.) (B)Find the domain of f *g. (Enter your answer using interval notation.) (c) Find (g *f)(x). (Simplify your answer completely.) (D) Find the domain...
*July 14, 2013*

**Math**

A doorway has the shape of a parabolic arch and is 16 feet high at the center and 8 feet wide at the base. If a rectangular box 12 feet high must fit through the doorway, what is the maximum width the box can have?
*July 11, 2013*

**Health**

How can I answer this question: Is my life balanced? Thanks :)
*July 3, 2013*

**chem**

Determine the unknown concentration of the ion in each of the following cells. (a) Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.10 mol·L-1) | Pb(s), E = +0.047 V. (b) Pt(s) | Fe2+(aq, 1.0 mol·L-1) , Fe3+(aq, 0.10 mol·L-1) || Fe3+(aq, ?), Fe2+(aq, 0.0010 mol·L-...
*June 21, 2013*

**English**

what this be correct relating to the quote Iranian women were forced to wear the veil for their own protection from being raped or even from being killed. Marjane was really affected by the iranian revolution because her mom was harrased by fundamentalists since she opposed ...
*June 3, 2013*

**English**

ok thanks do you know how this relates to Persepolis
*June 3, 2013*

**English**

Quote:"There are two ways to be fooled:One is to believe what is not so;the other is to refuse to believe what is so" My interpretation is when you get the truth you don't want to take ,but when you get it correct you think its wrong. Is this interpretation ...
*June 3, 2013*

**English(MAcbeth)**

please help
*May 8, 2013*

**English(MAcbeth)**

why is fair is foul and foul is fair a paradox and is it a motif. I believe its a motif because it keeps repeating in the story. WHy is it a paradox.
*May 8, 2013*

**math**

1/2 + 1/3 = 3/6 + 2/6 = 5/6 You cooked 5/6 of greens.
*April 24, 2013*

**4th grade math**

What is the angle measure of three pieces out of twenty
*April 16, 2013*

**ela**

what is the authors purpose for writing the test john white and roanoke?
*April 6, 2013*

**algebra 2\arithmetic series**

on the moon ,afalling object falls jest 2.65feet in the first second afther
*March 23, 2013*

**Geometry**

The coordinates of the vertices of a parallelogram are given. Find the possible coordinates for the fourth vertex. L(0,4), M(6,0),N(2,4)
*March 14, 2013*

**Tips**

Any ideas on how to get good grades on a test when your sick?
*February 24, 2013*

**health**

c is the best answer
*February 14, 2013*

**Social studies **

Conquest in the americas. How might the history of europeans in the americas be different if the indians had not been killed by european diseases???
*January 29, 2013*

**Social studies**

Ohhh thank you
*January 28, 2013*

**Social studies**

Europeans unknowlingly carried diseases such as smallbox measles and influenza to which native americans had no immunity. Can you please tell me the significance of the word immunity???
*January 28, 2013*

**Chemistry help**

Write a descriptive text and a word equation on how silicon is extracted from earth's crust' .
*January 26, 2013*

**science**

Suppose you put your lunch up on a shelf. Name two kinds of energy it has, and explain why. I think it would have potential energy because it has stored energy being off the ground, but what other energy?
*January 13, 2013*

**algebra**

how do you write an equation for a trend line?
*January 10, 2013*

**science**

why does the period of the pendulum decrease if the length of the pendulum decrease?
*January 8, 2013*

**maths**

h = 15 cm
*December 3, 2012*

**maths**

formula for volume frustum of a cone is: 1/3 π h (R² + Rr + r²) 1 liter = 1000 cubic cm 28.49 liters = 28490 cubic cm 1/3 π h (R² + Rr + r²) = 28490 Substitute values to get h and then find l by s = √((r1 - r2)2 + h2) then substitute l in ...
*December 3, 2012*

**7th grade math Ms. Sue please**

five is 20
*November 16, 2012*

**science**

50 ml of ZnSO4 solution was transferred to a mercury cathode and enough solid potassium nitrate is added to make the solution 0.1 M in KNO3. The electrolysis of Zn2+ is carried to completion of -1.3 V vs. SCE with the passage of 241 C of electricity. calculate the initial ...
*November 5, 2012*

**science**

50 ml of ZnSO4 solution was transferred to a mercury cathode and enough solid potassium nitrate is added to make the solution 0.1 M in KNO3. The electrolysis of Zn2+ is carried to completion of -1.3 V vs. SCE with the passage of 241 C of electricity. calculate the initial ...
*November 5, 2012*

**PLEEEESE HELP ME**

HELP!!
*November 2, 2012*

**MATH 9 HELP!!**

Justin wants to build a multi media room. 1/2 of the room will be for a home movie theater. 1/2 of the home theater will have comfy seats. The comfy seats will take up 24 m. 1. Draw the room and label all the areas 2. What are all the possible dimensions of the comfy seat area...
*November 2, 2012*