Sunday

April 19, 2015

April 19, 2015

Total # Posts: 848

**Science**

If you tested bleach with an indicator, it would be a BASE with a high pH, because it is a very strong cleaning product.
*October 12, 2009*

**physics**

A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.2 m/s at ground level. Its engines then fire and it accelerates upward at 4.20 m/s2 until it reaches an altitude of 960 m. At that point its engines fail, and the rocket goes into ...
*October 10, 2009*

**physics**

An inquisitive physics student and mountain climber climbs a 50.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.08 m/s downward. (a) ...
*October 10, 2009*

**physics**

Nevermind! I got it: (a) What is the speed of the ball at the bottom of the first plane? v2 = vi2 + 2 a (x - xi) (b) How long doe is take to roll down the first plane? v = vi + a t (c) What is the acceleration along the second plane? v2 = vi2 + 2 a (x - xi) (d) What is the ...
*October 10, 2009*

**physics**

A ball starts from rest and accelerates at 0.520 m/s2 while moving down an inclined plane 9.65 m long. When it reaches the bottom, the ball rolls up another plane, where, after moving 14.40 m, it comes to rest. (a) What is the speed of the ball at the bottom of the first plane...
*October 10, 2009*

**Literature**

Can anyone PLEASE find me a short summary of these poems? the forsaken merman-matthew arnold the portrait- robert browning
*October 5, 2009*

**Chemistry**

Two successive reactions, D-->E and E-->F, have yields of 48% and 73%, respectively, What is the overall percent yield for conversation of D to F?
*September 29, 2009*

**Chemistry**

Two successive reactions, D-->E and E-->F, have yields of 48% and 73%, respectively, What is the overall percent yield for conversation of D to F?
*September 27, 2009*

**Chemistry**

Would the balanced equation for this be: B2H6(g)+ 3H2O(l)--> 2H3BO3(s)+ 3H2O(g)
*September 27, 2009*

**MATH**

EVALUATW (-8B)^2 AND -8B^2 WHEN B=10. (-8B^2)= -8B^2= SOLVE USING THE ADDITION PRINCIPLE. 3.8=S=0.1. THE SOLUTION IS S= THANK YOU
*September 27, 2009*

**MATH**

Translate to an algebraic expression. The product of 21% and some number. The translation is= Type the percentage as a decimal. use d to represent some number.
*September 26, 2009*

**Math**

4/-3+(5/-12)= Simplify your answer. Type a fraction.
*September 26, 2009*

**spanish 2**

*Estamos en Philadelphiao *No estamos listos. *Como esta usted?
*September 23, 2009*

**Physics**

A ball travels at 59.78 m/s for a distance of 16.45768956 meters, then decelerates at -89.67 m/s2 until is reaches a velocity of -89.67 m/s, then accelerates at 59.78 m/s2 until it reaches a velocity of 16.45758956 m/s, as shown in the graph to the right. What's the ...
*September 21, 2009*

**socio**

i'm talking about disparities like african americans having higher rates of hypertension or infant mortality or homicide
*September 13, 2009*

**socio**

what are the consequences of health disparities on everyone
*September 13, 2009*

**elementary**

What is the rule in math?
*September 9, 2009*

**Math**

[6x + 5]/3 = 3x/7 - 2 Please help.
*September 4, 2009*

**math**

Wait, I forgot / means division, I thought you needed to fill in the correct symbol
*September 2, 2009*

**math**

All you have to do on those problems is put an operation symbol in place of the / and see if it works
*September 2, 2009*

**english**

Thank you!
*September 2, 2009*

**english**

Analogies: 1) Worthwhile : Valuable :: A) Worthless : priceless B) Beneficial : Worthy *I think it's A* 2) Store : Supply :: A) Department : section B) Provision : dispensary C) Keep : Distribute D) Stockpile : Reserve *I have no idea what this one is*
*September 2, 2009*

**3rd grade**

Well, I have been out of 3rd grade for awhile, but i am in middle school:) I think Ali could use 6 hundreds, and 24 ones. Therefore turning the 2 tens into ones (2x10= 20) and adding the ones she already had (20+4=24) ~Hope I helped;)
*September 2, 2009*

**English**

Ask yourself what part of speech "two" is- both are completely different parts of speech, but one of your answers is right
*September 1, 2009*

**Financial Math**

Sales is 59250 with 100% what is cost of sales: ? with 31.97%, Gross profit : ? with ?%, Personnel Cost : 18486.00 with ?%, Expenses: ? with 10.21%, Direct Operating Profit: ? with ?% what are the values of (?)
*August 27, 2009*

**elementary math**

I say it's easier to multiply them because you keep the same denominator...i think
*August 22, 2009*

**physics**

part b is 31.87
*July 30, 2009*

**Algebra**

Limits? I don't get it?
*July 14, 2009*

**Algebra**

Determine the vertical asymptotes for the graph function: f(x) = 4/x+10 g(x) = x^4 + 2/x h(x) = x^2+4/x(x+5)(x-2) f(x) = x+5/x^2 +4x - 32
*July 14, 2009*

**science**

what are the protections that exist to safeguard and protect the galapagos islands?
*July 5, 2009*

**Algebra**

Please solve: a. 1/3 - 5/6 = 1/x b. t+1/3 - t-1/2 = 1
*June 30, 2009*

**Science/Geology**

Thank you!
*June 28, 2009*

**Science/Geology**

I feel like an idiot for even asking, however, here goes... I need to do a "graphical representation of mechanical and chemical weathering, water, wind, and ice erosion." I have read through my text numerous times and still am not sure how to do this. Does anyone ...
*June 28, 2009*

**Algebra**

Thank you!
*June 28, 2009*

**Algebra**

I would choose B. Am I correct?
*June 28, 2009*

**Algebra**

Find the equation of the line parallel to the line 3x + y = 5 and containing the point (4, – 2).
*June 28, 2009*

**Algebra**

I did this problem, but would like to compare answers please if someone can help. Thanks! Find the equation of the line parallel to the line 3x + y = 5 and containing the point (4, – 2).
*June 25, 2009*

**Math**

Thanks! I knew I would get this stuff! Thanks for your help!
*June 23, 2009*

**Math**

Yes so my conclusion is that V(x) = x (7 – 2x)^2 is this correct?
*June 23, 2009*

**Math**

Suppose you take a piece of cardboard measuring 7 inches by 7 inches, cut out square corners with sides x inches long, and then fold up the cardboard to make an open box. Express the volume V of the box as a function of x.
*June 23, 2009*

**Math**

I figured it out. Thanks for your help!
*June 23, 2009*

**Communications Theory**

Thanks for your help!
*June 21, 2009*

**Communications Theory**

Can you give an example of "framing" from the present week's news? What words or images are used to "set" the frame?
*June 21, 2009*

**Algebra**

Given f(x)=rootsignx-2 and g(x) = x-7 what is the domain of the quotient function? A. (-infinity,2] B. )-infinity,7 U (7, infinity) C. [2,7) U (7, infinity) D. (2,infinity)
*June 18, 2009*

**Algebra**

But that is for the given line not the parallel or perpendicular one? So what I see is as follows and is correct? a. For the Parallel slope we change to the form y = mx + b, and the value of m is the slope 5x - 2y = 10 -y = -5x + 10 y = 5x - 10 the slope is 5 m = 5 Why are we ...
*June 17, 2009*

**Algebra**

So is the slope of the given line 2.5? I don't need to know that, but just wanted to make sure. Thanks!
*June 17, 2009*

**Algebra**

Given line = 5x – 2y = 10 Find the slope for a line parallel to the given line Find the slope for a line perpendicular to the given line
*June 17, 2009*

**Algebra**

Let g(x) = 10-x/2+x and then a)Find g (–1) b)State the domain of the function c))Find g (t + 1) and simplify as much as possible
*June 15, 2009*

**science**

how do fish move around
*June 4, 2009*

**Physics**

A ball is thrown vertically upward with a speed of 1.53 m/s from a point 4.21 m above the ground. Calculate the time in which the ball will reach the ground. {Distance Above Ground} = D = (4.21) + (1.53)*t + (1/2)*(-9.8)*t^2 {D = 0} ----> {Time To Reach Ground} = 1.096 sec ...
*May 25, 2009*

**physics**

A 2.7-kg box is released on a horizontal surface with an initial speed of 2.9 m/s. It moves on the surface with a deceleration of 0.27 m/s^2. Calculate the kinetic friction force on the box. I couldn't find an example of this anywhere but...is it: {Friction Force} = m*a...
*May 25, 2009*

**Physics**

What should be the angle between two vectors of magnitudes 3.20 and 5.70 units, so that their resultant has a magnitude of 6.10 units? Cos x = (b^2 + c^2 - a^2) / 2bc Cos x = (3.2^2 + 5.7^2 - 6.1^2) / (2 * 3.2 * 5.7) Cos x = 5.52/36.48 Cos x = 0.15 x = 81.3 degrees
*May 25, 2009*

**chemistry concentrations**

Can someone please help me with the following problem? 1.Calculate the volume of 1.88 M NaI that would be needed to precipitate all of the Hg+2 ion from 482 mL of a 1.61 M Hg(NO3)2. The equation for the reaction is thank you!
*May 5, 2009*

**algebra**

how do you multiply 4y squared and 4x squared?
*May 5, 2009*

**high school biology**

What is the relationship between codon and gene.
*April 23, 2009*

**Pre Cal.**

è is theta.
*April 21, 2009*

**Pre Cal.**

If cscè= -5/4 and 180degree < è < 270 degree, find tanè. (-3, -4) r=5 tan=y/x=-4/-3=4/3 Is this correct?
*April 21, 2009*

**English**

what does lidds stand for?
*April 12, 2009*

**8th grade**

i have this at 7th grade
*April 1, 2009*

**Health**

What cellular process involves mitosis?
*March 25, 2009*

**Math**

What is the area of a circle with a diameter of 12 ft by pi? Please help me with the formula~thanks!
*March 23, 2009*

**Advanced Math.**

List the possible rational roots of 2x^3 + 17x^2 + 23x - 42 = 0 My answer: the possible rational roots are {±1, ±2, ±3, ±6, ±7, ±14, ±21, ±42. ±1/2, ±3/2, ± 7/2, ±21/2}. Correct?
*March 23, 2009*

**Pre-Cal.**

Which of the following results in the graph of f(x)=x^2 being expanded vertically by a factor of 3 and? reflected over the x-axis? a. f(x)=1/3x^2 b. f(x)= -3x^2 c. f(x)= -1/x^2 +3 d. f(x)= -1/3 x^2
*March 23, 2009*

**Pre-algebra**

HELP!!!!!!
*March 4, 2009*

**Pre-algebra**

no like changing money wise interst to percentages.
*March 4, 2009*

**Pre-algebra**

how do you change interst to percents?
*March 4, 2009*

**Math**

How is writing a percent as a fraction like writing a decimal as a fraction?
*March 4, 2009*

**Math**

How do you change 0.8571428 to a percent?
*March 3, 2009*

**Math**

the total fare for 2 adults and 3 childrren on the Tilt a Whirl ride $14.00. If a child's fare is 1/2 of an adult's fare, what is the adult fare? we know the answer is $4 for adults and $2 for children. How do we figure this out though in 4th grade terms -no algebra ...
*February 1, 2009*

**Geography**

My question is: How are the tribes of the Amazon and other rainforests affected by deforestation?
*January 14, 2009*

**Math**

Rate is 6% , time is 3 years, interest is $216.00, what is the principal?
*January 13, 2009*

**12**

what do you call a female bug that floats
*January 7, 2009*

**math**

Duhhh all seventh graders get this problem
*January 6, 2009*

**math**

1262.47
*December 28, 2008*

**physics**

Consider that a coin is dropped into a wishing well. You want to determine the depth of the well from the time t between releasing the coin and hearing it hit the bottom. Suppose that t=2.059 s and assume the speed of sound in air is 330 m/s. What is the depth of the well? Can...
*December 11, 2008*

**pigskin geography**

the state capitals in which a game will be played
*December 10, 2008*

**physics**

A ball of mass m = 500g moves around a vertical axis with an angular speed ù. It is attached to two strings of length: the upper a = 30 cm and the lower b = 40 cm.Both strings are taut and perpendicular to each other. Each of the strings beaks if the tension exceeds 12....
*December 9, 2008*

**math**

alright thx!
*November 26, 2008*

**math**

is the second circle twice as big? like is that how they compare?
*November 26, 2008*

**math**

How is the circumference of a circle with radius 9cm related to the circumference of a circle with diameter 9cm? i dont understand this.Help?? Thanks:)
*November 26, 2008*

**Research Project on Computer Confidentiality**

just to break up the first sentence of everyones anwers, i'm doing this too! lol it's difficult, yes, but keep going! i found a decent site on princeton.edu. type the question into bing and look at the web sites. i can't remember what the whole address is, sorry! ...
*November 12, 2008*

**science**

An object travelling in a circle is accelerating ecause it is constantly changing ____________________.
*October 20, 2008*

**PHYSICS**

When you say mu, do you mean "meww"?
*October 19, 2008*

**social studies**

legends myths or stories passed on by word of mouth
*October 15, 2008*

**Chemistry**

Need Help with these two problems 1.One piece of copper jewelry at 111Â°C has exactly twice the mass of another piece, which is at 36.0Â°C. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside ...
*October 12, 2008*

**English**

Which is the correct sentence when using verb form and verb tense? Since American Idol premiered on television, many talented contestants have appeared on the show. 8b. Since American Idol premiered on television, many talented contestants appeared on the show.
*October 10, 2008*

**Hisotry- Dialectics**

What are Hegel's, Fukuyama's, Marx's and St.Augustine's dialectics and how do they differ from each other. What are their views on the progression of humanity? I know that Hegel's view said that an thesis gave rise to an antithesis which was resolved by a ...
*October 9, 2008*

**Math**

Are there any prime numbers divisible by 2? Explain.
*October 7, 2008*

**Chemistry**

I am trying to find the ground state for, Pb2+ I went back two on the chart and came to Hg. And entered it's ground state. Why is this wrong?
*October 6, 2008*

**Chemistry**

Without referring to a periodic table, pick the electron configuration of elements with the following atomic numbers and classify the elements. (Type your answer in noble gas notation using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.) (a) 17 (b) 20 (c) 23
*October 6, 2008*

**Chemistry**

Write the ground state electron configurations of the following ions. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne] for F -.) Pb2+ Au+ Mn2+
*October 6, 2008*

**college english**

not sure what to do
*October 1, 2008*

**college english**

How to correct this sentence Since 1980, the aids epidemic has continued to spread widely throughout the world.
*October 1, 2008*

**chemistry**

A 43 kg person drinks 490 g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 16% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in ascending is ...
*September 26, 2008*

**music**

the meaning of the word rest heads
*September 23, 2008*

**music**

the meaning of the words
*September 23, 2008*

**chemistry**

Yes you had the equation right. And that worked. Thank you!
*September 22, 2008*

**chemistry**

Determine the amount of heat (in kJ) given off when 2.07 multiplied by 104 g of ammonia are produced according to the following equation. Assume that the reaction takes place under standard-state conditions at 25.0°C. N2(g) + 3 H2(g) 2 NH3(g) ΔH°rxn = -92.6 kJ
*September 22, 2008*

**chemistry**

What is the mass in grams of 14.6 amu?
*September 15, 2008*

**Literature**

I Have read it i'm just not good with metaphors and not sure if i am looking for names or objects
*September 10, 2008*