Saturday

April 30, 2016
Total # Posts: 1,209

**math**

F is dU/dr, but your answer is not right :(
*October 4, 2015*

**math**

The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:
*October 4, 2015*

**technology**

A _____________ is a way of students to keep track of information during research . a) credible website B)search log c) Boolean operator d) online database ** please help!
*October 1, 2015*

**Art**

Bourgeois by Alfred Jacob Miller Look at the following illustration of an early american settler. it would likely inspire a writer to create a story based on all of the following historic information except A) the clothing worn by the individuals B) the background scenery c) ...
*September 30, 2015*

**math**

brenda is making lemonade and needs 1 2/3 cups of lemonade concentrate for each batch. She wants to make 4 1/2 batches of lemonade, how many cups of lemonade concentrate will she need?
*September 30, 2015*

**Technolgy**

what was the answer?
*September 29, 2015*

**Art**

At the water´s edge by Paul cézanne This painting is a good example of A) creative use of brushstroke for textures. B) usage of warm color for mood. C) asymmetrical balance for unity. D) line for creation of emphasis. i think the answer is B please help am i correct?
*September 28, 2015*

**Art**

Achille De gas in the Uniform of a cadet by Edgar Degas How was the proportion used in this image? A) to create a mood of tranquility B) to create an optical illusion C) to create a sense of perspective in the image D) to make sure the person was drawn correctly i think A
*September 28, 2015*

**Washington lee **

A certain spring stretches 8.9 cm when it supports a mass of 0.89 kg . If the elastic limit is not reached, how far will it stretch when it supports a mass of 18 kg ?
*September 27, 2015*

**physics**

A giant bull running at 15 m/s slows at a rate of 2.4 meters per second per second. How long does it take it to stop?
*September 22, 2015*

**physics**

A bear spies some honey and takes off from rest, accelerating at a rate of 2.8 m/s^2. If the honey is 20m away, How fast will the bear be going when he gets to the honey?
*September 22, 2015*

**english**

In "The Maori: Genealogies and Origins in New Zealand,” which evidence best helps the reader infer that the Maori people live in a difficult climate?
*September 16, 2015*

**Physics**

Packing material made of pieces of foamed polystyrene can easily become charged and stick to each other. Given that the density of this material is about 35 kg/m^3, estimate how much charge might be on a 2.5 cm diameter foamed polystyrene sphere, assuming the electric force ...
*September 7, 2015*

**AP Calculus**

Would I do the same thing as x approaches: Infinity -2+ -2- 2+ 2-
*August 26, 2015*

**AP Calculus**

Would I do the same thing as x approaches: Infinity -2+ -2- 2+ 2-
*August 26, 2015*

**AP Calculus**

Find each of the limits without a calculator. Use the limits as an aide to sketch the graph of f(x)= (x-2)/(|x|-2) for-10<_x<_10 and -6<_y<_6. Be sure to clearly indicate any asymptotes, holes or other important characteristics. lim x->∞ f(x)
*August 26, 2015*

**Environmental Conservation**

What are the loopholes in blindly assuming that Traditional Ecological Knowledge (TEK) is the most complete knowledge for effective conservation? What are the possibilities of linking traditional knowledge with scientific methods to help in conservation efforts? Can someone ...
*August 18, 2015*

**Environmental Conservation**

Is Ramachandra Guha for utilitarian (or instrumental) or the intrinsic (or inherent) value of nature? I am a bit confused about the journal article he wrote "The Authoritarian Biologist and the Arrogance of Anti-Humanism: Wildlife Conservation in the Third World".
*August 4, 2015*

**math**

I have two kinds of candy,one which is selling at P8.00 per kilo and other at P6.00 per kilo. How many kilos of the P6.00 candy can i mix with 20 kilos of the P8.00 kilo candy to have a mixture that i can sell at P7.00 per kilo?
*July 16, 2015*

**math**

Assuming segments from A to E and from B to D to be straight, find BC. If the shape looks like a cricket bowtie, the #s are AB=10, BC=3x-2, DE=6 CD=x+2 angles B(top left corner)& D(bottom right corner)are 90* angles
*July 9, 2015*

**math**

im so lost its suppose to be one large #
*July 9, 2015*

**math**

find the product of the square root of 25 and each of the five answers. when the five answers are 12, 18, 8/3, 8/3, 18.2
*July 9, 2015*

**math**

Given that triangles PQR~STU:triangle #1 sides 8,9,10 triangle #2 3,?,? a) What is the ratio of similitude of PQR~STU triangles? Express answer in fractional form. b) What is the ratio of the perimeter of PQR~STU triangles? Express answer in fractional form.
*July 9, 2015*

**math**

The lengths of the sides of a triangle are 13, 14 and 15 units. Find the shortest side of a similar triangle whose longest side is 21.
*July 9, 2015*

**LA**

A A D C
*June 3, 2015*

**college math**

4x-5y-4z=2. X+8y+4z=8. 16x-20y-16z=8 solve the following system
*May 13, 2015*

**math**

Given the position function, s of t equals t cubed divided by 3 minus 12 times t squared divided by 2 plus 36 times t, between t = 0 and t = 15, where s is given in feet and t is measured in seconds, find the interval in seconds where the particle is moving to the right.
*April 26, 2015*

**math**

The side length of a rectangular box with a square base is increasing at the rate of 2 ft/sec, while the height is decreasing at the rate of 2 ft/sec. At what rate is the volume of the box changing when the side length is 10 ft and the height is 12 ft? Remember to use the ...
*April 26, 2015*

**calculus**

A water tank has the shape of an inverted right circular cone with base radius 3 meters and height 6 meters. Water is being pumped into the tank at the rate of 12 meters3/sec. Find the rate, in meters/sec, at which the water level is rising when the water is 2 meters deep. ...
*April 25, 2015*

**chemistry**

How many milliliters of 0.748 M Mg(NO3)2 contain 1.700 g of Mg(NO3)2
*April 23, 2015*

**chemistry**

Tim O'connor?
*April 16, 2015*

**chemistry**

500 mL Of hydrogen at 27 degrees celcius and 3 atms pressure is compressed to 100 mL at 100 degrees celsius. What is the new pressure in atms?
*April 9, 2015*

**chem3A**

7.34 grams of a gas occupies a volume of 2.5 liters at a pressure of 1216. mm and a temperature of 73 degrees celsius. What is the molecular weight of the gas?
*April 9, 2015*

**Chemistry**

yes it is but i need help in how to solve it.
*April 9, 2015*

**Chemistry**

In the reaction Ca(OH)2 + 2HCL -> CaCl2 + 2H2O: How many kilograms of H2O will be produced when 0.0948 Kg of Ca(OH)2 react with excess hydrochloric acid?
*April 9, 2015*

**geometry**

A crate is 7ft. Wide 7ft. Deep and 7ft. Tall write the measurements of the crate in exponential notation, standard form, and expanded form
*April 8, 2015*

**math**

A crate is 7ft. Wide 7ft. Deep and 7ft. Tall write the measurements of the crate in exponential notation, standard form, and expanded form
*April 8, 2015*

**math**

Thank you
*March 27, 2015*

**math**

Briana wants to divide 5/8 pound of soil evenly among 4 pots how much soil will be in each pot
*March 27, 2015*

**Chemistry**

You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.220 M sodium benzoate. How much of each solution should be mixed to prepare this buffer? mL of benzoic acid ? mL of sodium benzoate?
*March 27, 2015*

**Chemistry**

5.0x101 mg of NaCl is added to 0.100 L of a 1.4x10-2 M solution of Pb(NO3)2. Calculate the resulting equilibrium concentration of Pb2+ after mixing. Show all work.
*March 4, 2015*

**social studies**

which is the main climate in cyprus 1. tropical and dry 2. continental cool summer 3 mediterranean 4 humid subtropical
*March 3, 2015*

**Human Geography**

"Real-life contact between members of different social groups is always structurally mediated and embedded in particular historical and geographical contexts of power relations between and within social groups." Can some explain this quote to me?
*February 22, 2015*

**Human Geography**

Thanks, Ms. Sue.
*February 21, 2015*

**Human Geography**

What does "challenging white privilege" means?
*February 21, 2015*

**chemistry**

4g of a mixture of CaCO3 and sand is treated with an excess of HCl and 0.88g of CO2 is produced. What is the percentage of CaCO3 in the mixture
*February 17, 2015*

**Chemistry**

1.2048g sample of impure Na2CO3 is dissolved and allowed to react with a solution of CaCl2 resulting CaCO3 after precipitation, filtaration and drying was found to weight 1.0362g. calculate the percentage purity of Na2CO3
*February 14, 2015*

**Chemistry**

6 mol sample of Cu2S is roasted in excess O2 to yield Cu metal and SO2. Calculate the mass of Cu metal produced
*February 14, 2015*

**English**

Do you think that the nostra aetate is important for this era dose this document affect your life
*February 5, 2015*

**English**

Do you think that the nostra aetate is important for this era dose this document affect your life
*February 5, 2015*

**English**

Do you think that there is any thing missing from the nostra aerate
*February 5, 2015*

**English**

Who do you believe is the intended audience ( who was it written for ) of nostra aerate? What is the intended (purpose) of nostra aerate ? Explain answers with exames from the text
*February 5, 2015*

**College Human Geography**

Thanks, Ms. Sue. I got it.
*February 3, 2015*

**College Human Geography**

"Why is there inadequate action by the state to curb the violence?" Can someone explain what the question is asking?
*February 3, 2015*

**College Human Geography**

Thanks, Ms. Sue.
*February 2, 2015*

**College Human Geography**

"What role does race play in the film?" Can someone explain this question?
*February 2, 2015*

**physics II**

A rocket is launched vertically from ground with a constant acceleration. If the rocket emits a burst of sound every five seconds after launching, find the difference of intensity levels observed at the launching site for the first and the second bursts of sound.
*January 31, 2015*

**Physics II**

Please can anyone explain. Thank you. A rocket is launched vertically from ground with a constant acceleration. If the rocket emits a burst of sound every five seconds after launching, find the difference of intensity levels observed at the launching site for the first and the...
*January 31, 2015*

**Geography**

The shoreline has retreated as much as 50 miles and its level has dropped by 40 feet. Can someone explain this sentence to me?
*January 27, 2015*

**English**

Can someone please tell me what this quote means? “We have everything we need to be happy but we aren't happy. Something is missing... It is not books you need, it's some of the things that are in books. The magic is only in what books say, how they stitched the ...
*January 27, 2015*

**Geography**

Thanks, Ms. Sue.
*January 27, 2015*

**Geography**

What does "thristy crops" mean?
*January 27, 2015*

**chemistry**

Calculate the amount of heat required to raise the temperature of a 39g sample of water from 6∘C to 23∘C.
*January 26, 2015*

**College Geography**

"The desert was tamed but the price was calamitous, the worst climatic disaster in the history of the Soviet Union." Can someone explain what tamed means in the sentence? This sentence has to do with the Aral Sea.
*January 25, 2015*

**math**

Johnny is jogging along a track. He has already jogged 1 2/3 miles. He plans to jog a total of 3 1/4 miles. How many miles does he have left to jog?
*January 21, 2015*

**Chemistry **

A 5.00 g mixture of methane (CH4) and ethane (C2H6) is combusted in oxygen gas to produce carbon dioxide and water. If 14.09 g of CO2 is produced, how many grams of methane was in the original 5.00 g mixture ?
*January 21, 2015*

**chemistry**

Nevermind i got it
*January 12, 2015*

**chemistry**

What volume of 1.34 mol/L hydrochloric acid, HCI is expected to react completely with 6.89 g of calcium
*January 12, 2015*

**Sociology (Racism)**

Thank you for explaining it, Ms. Sue.
*January 9, 2015*

**Sociology (Racism)**

Which groups or individuals are able to talk to one another in a constructive way? I don't understand what does "in a constructive way" mean. Can someone explain it.
*January 9, 2015*

**Algebra**

56 more than 3 times a number
*December 23, 2014*

**Maths**

If length,breadth of rectangle is 3:4 ,area=6912, find dimension
*December 23, 2014*

**Math**

A ship leaves England for the Strait of Magellan. It is traveling at a constant speed of eight knots and takes 41 days to reach the Strait of Magellan. The ship reaches the Strait of Magellan at the exact time of day that it left England. How far did the ship travel? Choose ...
*December 9, 2014*

**Chemestry**

To fnd the empirical formula i have to convert the percent in g first, or a take the date in percent?
*December 7, 2014*

**geology **

Convert these dates to BP dates (using 1950 as "the present.")1843 ± 50 years BC
*December 2, 2014*

**physics**

A child on a barber shop spins on a stool. If the child turns counterclockwise through 8.0 radians at a certain time and with an angular velocity of 2.56 rad/s. What is the time interval in minutes when the child turns?
*December 1, 2014*

**Physics**

A 1.75-kg wooden block rests on a table over a large hole as in the figure below. A 5.20-g bullet with an initial velocity vi is fired upward into the bottom of the block and remains in the block after the collision. The block and bullet rise to a maximum height of 20.0 cm.
*November 30, 2014*

**geometry**

Equilateral triangle ABC and isosceles triangle DBC share side BC. If angle BDC= 34 and BD=BC, what is the measure of angle ABD? I don't know how to solve this questions, can someone guide me through?
*November 26, 2014*

**Geometry**

Equilateral triangle ABC and isosceles triangle DBC share side BC. If angle BDC= 34 and BD=BC, what is the measure of angle ABD? I don't know how to solve this questions, can someone guide me through?
*November 26, 2014*

**geometry **

the ratio of the length of the corresponding side of two regular polygons is 3:4. the are of the larger polygon is 320m^2. what is the are of the smaller polygon?
*November 20, 2014*

**Math**

I need help on how to explain to my 5th grader how to come up with an algebra equation from a word problem. Any suggestions? Example: Gerry had a total of 30 pens and pencils. He decided to trade with his friends all his pens for pencils. If he traded every pen for 2 pencils ...
*November 20, 2014*

**Algebra**

Gerry had a total of 30 pens and pencils. He decided to trade with his friends all of his pens and pencils. If he traded every pen for 2 pencils, he would have 48 pencils in all. How many pens and how many pencils did he have before the trade?
*November 19, 2014*

**Geometry**

Thank you!
*November 12, 2014*

**Geometry**

Sorry, is it angle N?
*November 12, 2014*

**Geometry**

In triangle NLM, name the angle that is included between line NM and line LN? Is it line LM?
*November 12, 2014*

**Physics**

I have a blue liquid with density 1040 +- 20 yellow liquid 1190 +- 60, (dark)red liquid 1170 +- 30 pink/light red liquid 1100 +- 60 my task is to find out what liquids are they all of the densities were calculated in class(we were doing an experiment).
*November 6, 2014*

**physics**

Daneil is bouncing on a trampoline. After a certain bounce he leaves the ground traveling at a speed of 2.54 m/s. How far into the air does he go? I need helllpppp I'm so bad a physics, I need to know what formula to use..
*November 6, 2014*

**Biology**

Please Give 10 statements to prove that plants can reproduce sexually.
*October 29, 2014*

**Math**

I cannot find anything
*October 19, 2014*

**Math**

Find the first 3 common multiples for 6,7,8.
*October 19, 2014*

**math**

alyssa has saved 26 quarters from washing cars. how many cents does alyssa have?
*October 14, 2014*

**chemistry **

A solution of sodium thiosulfate, Na2S2O3, is 0.4206 M. 28.94 mL of this solution reacts with 5.89 mL of I2 solution. What is the molarity of the I2 solution?
*October 14, 2014*

**English 1**

the first question would be love? and the second would be it model?
*October 13, 2014*

**English 1**

Companies*
*October 13, 2014*

**English 1**

Sorry, put one more sentence Name verb and subject for the sentence "Compaies usually love these qualities." Is the subject companies and verb is usually? and for this sentence "He would be a model employee" Would he be the verb and be the verb?
*October 13, 2014*

**English 1**

thank you
*October 13, 2014*

**English 1**

experience the subject?
*October 13, 2014*

**English 1**

is the verb will?
*October 13, 2014*

**English 1**

What is the verb and subject in this sentence> "His experience with computers and copy machines will be valuable in an office." For the subject I got his but I can't figure out the verb!
*October 13, 2014*