Friday
July 31, 2015

Posts by sammy


Total # Posts: 488

Science
2NO2. how many grams of NO2 will be produced with 5.00 moles of NO React? what would the working out of this be?
May 6, 2010

physics
two parallel conductors are located one above the other, with both carrying currents in opposite directions. As a result they repel each other. is the upper conductor in a stable state of levitation? b) Now we reverse one current so that the two conductors attract each other. ...
April 18, 2010

Analogy
Analogy: broom is to sweep AS brush is to _____________ 5 letter word that starts with either scr, spr, str, or thr. I've been trying to figure this out but I can't. I need help.
April 14, 2010

5th grade
Need help with an analogy. brother : mother fly : _ _ _ _
April 14, 2010

Math
Describe how a mathematical function is created. Be sure to include a discussion of dependent and independent variables, and the two sets called domain and range.
April 14, 2010

Math
A population of primates in a certain jungle is doubling each year. Describe how the population increases in size as a function of time. Give some example values for this population over time. Is this a linear or exponential relationship?
April 14, 2010

Math
Give two examples of linear relationships (they can be from the world of business, science, sports, or other areas). Since their graphs would be straight lines, describe the meaning of the slopes of these lines as they relate to these relationships
April 14, 2010

Math
Describe the basic differences between linear growth (a linear model) and exponential growth (an exponential model).
April 14, 2010

Classroom Management Techniques
The Nile perch population explosion has been accompanied by: a decrease in the dissolved oxygen in the shallowest portions of Lake Victoria. a decrease in the dissolved oxygen in the deepest portions of Lake Victoria. an increase in the dissolved oxygen in the deepest portions...
March 22, 2010

social studies
What would most likely happen if the Canadian government overruled the current laws protecting French language and heritage in the province of Quebec?
March 21, 2010

MATH
bjhkfghk.ghdlf; yuio;ryuieuh
March 19, 2010

Chem
How would increasing the volume of the reaction vessel affect these equilibria. You don't have to tell me the answers, but can you please explain to me how I get the answer. a) NH4Cl(solid) <===> NH3(gas) + HCL(gas) b) N2(gas) + O2(gas) <===> 2NO(gas)
March 10, 2010

Chemistry
Why does changing the volume of the reaction vessel have no effect on this equilibrium? CO(g) + Fe3O4(s) <===> CO2(g) + 3FeO(s)
March 8, 2010

chemistry
a chemist reacts 8.85g or iron with an excess oh hydrogen chloride to form hydrogen gas and iron(II)chloride.calculate the theoretical yield and the percentage yield of hydrogen if 0.27g H2 are collected
March 7, 2010

CHEM
If 335g water at 65.5 degC loses 9750 J of heat, what is the final temperature of the water?
March 1, 2010

math
Write as fractions. a. 1/2 of 3/4 b. 1/3 of 3/5 c. 3/4 of 1/6
March 1, 2010

Chemistry
If 430 mL of 0.837 M aqueous HNO3 and 23.5 g of solid Al are reacted stoichiometrically according to the balanced equation, how many grams of solid Al remain? Round your answer to 3 significant figures. 6HNO3(aq) + 2Al(s) → 3H2(g) + 2Al(NO3)3(aq)
February 26, 2010

math
an airline passanger fell asleep halfway to her destination. When she woke up, the distance remaining was half the distance traveled while she was asleep. What portion of the trip was she asleep?
February 23, 2010

Physics
Hi, I tried this question...should we use g as -9.8m/s^2?
February 5, 2010

Physics
A force of 4.3 x 10-15 N acts between an electric dipole with dipole moment 2.3 x 10-29 C m and an electron. How far away from the dipole is the electron located when it travels along the dipole axis?
February 5, 2010

Physics
A hydrogen atom consists of a positively charged proton (nucleus) and a negatively charged electron. The following is correct due to Coulomb's law: a.The two particles repel each other b.The electron accelerates toward the proton c.The electron and proton are in mechanical...
February 5, 2010

Microeconomics
Explain how the supply of new housing interacts with shifts in the demand for owner-occupied housing in your neighbourhood or an area with which you are familiar. In what ways does the mechanism differ from that which exists normally in markets for consumer goods such as ...
February 1, 2010

Chemistry
The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of the air in the flask at 257C is 762 mm Hg. If the flask is immersed in a water bath at 425C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at the new temperature is ...
January 31, 2010

Physics
Sorry for the repost, i made a typo in the original post's subject. A dry water well is 1.5 m in radius and 5.0 m deep. In order from lowest to highest, the fifth resonant frequency of this well is closest to ... I know that it is an open-closed system, but how would we ...
January 27, 2010

physis
A dry water well is 1.5 m in radius and 5.0 m deep. In order from lowest to highest, the fifth resonant frequency of this well is closest to ... I know that it is an open-closed system, but how would we take into account the amplitude, which is the radius given for this ...
January 27, 2010

Chemistry
Assuming it behaves as an ideal gas, calculate the temperature of a sample of He whose molecules have an average translational kinetic energy of 1.14E-23 kJ/molecule.
January 24, 2010

algebra
Asked question wrong last time. New question with description of how to figure it out please. What is the value of 3t+7 given -2t+1 =3
January 17, 2010

algebra
What is the value of 3t+7 when you know -21t+1=3 I need to know how to figure this out not just the answer. Thank you
January 17, 2010

social studies
what is a nobleman
January 10, 2010

Calculus
im asking the rate of convergence as the order such h^2? h^3? etc
December 11, 2009

Calculus
Find the Rates of convergence of the following functions as h->0 lim h->0 sin h - hcosh ------------- = 0 h Find the Rates of convergence of the following functions as n->inf lim (Sin (1/n))^2=0 n-> inf
December 11, 2009

algebra
Qaud Forumula -b+-sqrt(b^2-4ac) / 2a 3x^2-2x-4=0 a = 3 b = -2 c= -4 -(-2) +- sqrt((-2)^2-4(3)(-4))/ 2(3) = 2 +- sqrt(52) / 6
December 11, 2009

hca 270
i have to do this and i have no idea im so confused i know to define but what is a real world example. and what are the fouec's and five pillars? im confused a little hint of help please The Four C’s and Five Pillars Directions: Consult Ch. 1 and the glossary of ...
December 4, 2009

Physics
Alcohol flows smoothly through a horizontal pipe that tapers in cross-sectional area from A1 = 41.9 cm2 to A2= A1/3. The pressure difference Δp between the wide and the narrow sections of the pipe is 11.1 kPa. What is the volume flow rate ΔV/Δt of the alcohol? ...
December 1, 2009

Physics
An object has a mass of 0.5 kg. It undergoes a simple harmonic motion. The amplitude of that motion is 0.07 m and the period is 0.31 s. What is the total energy of the object?
December 1, 2009

math
how do i find the local extrema for this graph. f(x)= x(e^x)
November 18, 2009

Math
If a circle has the radius of 6 and it is at the orgin, what are seven points on the circle. I already have four and I need three more. So far I have, (6,0) (0,6) (0,-6) and (-6,0). What am I missing. I also can't write any decimals for the points, but it can be expressed...
November 17, 2009

math
my teacher wants me to look up in the stock market how much was the price per share for Pier 1 Imports on March 31, 2009 and November 16, 2009. Where do i go to find this information?
November 16, 2009

math
is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the reals, f(0)=0, F ...
November 15, 2009

math
is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the reals, f(0)=0, F ...
November 14, 2009

math
find the number that makes the fractions equivalent 1/2=?
November 12, 2009

math
i am the one who asked the question
November 11, 2009

chemistry
Could someone explain dipole-dipole forces for me?
November 6, 2009

5th grade Language
So did we ever figure out if these answers from Ms. Sue are correct? I have this homework tonight and struggling with question #4.
November 5, 2009

2nd grade
what solids and liquids used i house
October 29, 2009

Physics
There is a 12mm high object that is 10 cm from a concave mirror with a focal length of 17 cm. (a) Where (B) How high, and (C) what type type is its image. For C i got real inverted and reduced but how do you do parts A and B
October 22, 2009

Physics
There is a 12mm high object that is 10 cm from a concave mirror with a focal length of 17 cm. (a) Where (B) How high, and (C) what type type is its image. For C i got real inverted and reduced but how do you do parts A and B
October 21, 2009

english
simple subject of this sentence Alex Tanner added a spoonful of vanilla
October 14, 2009

social studies
Prince Edward Island
October 14, 2009

Physics
What angle should you rotate a mirror so that a reflected ray rotates through 28 degrees. I got 20, but i am not sure, please help
October 13, 2009

Algebra 1A
HELP!!! Translate to an inequality. Use the variable x. The price of an amusement park ticket is greater than or equal to $12. The inequality is _ _ $ _. Simplfy your answer. Put the variable on the left side of the inequality. Than you!
October 2, 2009

Home and Careers
What are the seven areas or personal grooming?
October 1, 2009

MATH
Divide if possible 48/-8 select the correct choice below and fill in any answer boxes in your choice A.48/-8= B.The answer is undefined.
September 26, 2009

Math
Solve. 8x+4=4x+5= the solution is x= simplify your answer. Type an integer or fraction
September 26, 2009

ECONOMICS
The demand for gasoline is less elastic in the short run than in the long run. Which of the following is a reason for this? (A) If the price of gasoline is relatively high for a long time, consumers are more likely to buy more fuel-efficient cars. (B) In the short run, the ...
September 14, 2009

Physics
The freezing point depression of a .100 m solution of NaCl solution is .34C. Calculate the percent dissociation of NaCl.( Kf for water=1.86) Please help
August 27, 2009

Physics
There is a rod that is 55 cm long and 1 cm in radius that carries a 8 uC charge that is ditributed uniformly over its entire length. What would be the magnitude of the electric filed 4.0 mm from the ord surface, not near either? So far I have 2(8*10^-6)(9*10^9)/.55=261818 then...
August 27, 2009

Chem
When salt is spread on a snow-covered road at -2C, the snow melts. Though when the same amount of salt is spread on the snow covered road at -30C, nothing happens. Explain? Is this diue to beinf ionic, and nonvolatile vapor and volatile vapor pressure?
August 25, 2009

Chem
Which compound does not dissociate a. table sugar b. NaCl C. MgCl2 D. CaCl2 I say b becasue it dissociates 90%, right?
August 25, 2009

Chem
Wwhich compound does not dissociate? a. Table sugar
August 25, 2009

Chem
If you had a 5.55 M solution of NaCL that has a density of 1.025g/ml at 20C, what would the concentration be of the solution in molarity.I got .541 m am I right or my calculation totally off?
August 25, 2009

Physics
There is a rod that is 50cm long and has a radius of 1cm that carries a charge of 2uC distributed uniformly over its length. What would be the value of the magnitude of the electric field. (a) 4.0 mm from the rod surface, not either end So far I have 2(8*10^-6)(9*10^9)/.55=...
August 25, 2009

Physics
There is a rod that is 50cm long and has a radius of 1cm that carries a charge of 2uC distributed uniformly over its length. What would be the value of the magnitude of the electric field. (a) 4.0 mm from the rod surface, not either end So far I got E1/4density-2pie0r or E= 2(...
August 25, 2009

Econ
Suppose that the government decides to charge cola consumers an excise tax. Before the tax, 12 million cases of cola are sold every month at a price of $3.50 per case. After the tax, 6 million cases of cola are sold every month; consumers pay $4.00 per case and producers ...
August 24, 2009

Physics
There is an electric field in a certain region that is defined as E=axihat, a is N/C and x is defined by the position in meters. What is the volume charge density in the region. So far I did 32p=(32)(8.85*10^-12) I got 3.54*10^-10, where did I go wrong?
August 20, 2009

Physics
There is a figure with a +2.0 UC charge on the left and a -2.0 uC charge on the right. P is in the center between the two charges. They are 5.0 cm apart. 1) Find the electric field 5.0 cm to the left of P. 2) Find the electric filed 5.0 cm directly above P. 3) Find the ...
August 19, 2009

Physics
There is a proton that is at the origin and an ion at x1=6 nm. If the electric field is zero at x2= -3 , what is the charge on the ion? All I ahve for this is 2q/d^3=-e/x1^3 q=9*10^9 d=9 e=1.602*10^-19 x1=6 I get -2.7. They want an integer so i put up -3. What am I doing wrong?
August 17, 2009

Physics
There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1 *10^-11N. Where did I ...
August 12, 2009

Physics
There is a 85 uC point charge at the origin. What is the electric field at the point x= -45cm , y= 55cm. I am doing (-.45+.55)/(-.45^2+.55^2)^3/2 Where did I go wrong? I have to find the elctric point for the Ex and Ey.
August 12, 2009

Physics
A -3.5 uC charge experiences a 13N i hat electric force in a certain electric field.What would the force be for a proton experience in the same field? I amd doing this 13/-3.5=-3.7 then multiplying 1.6*10^19 where did i go wrong
August 12, 2009

Physics
There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1 *10^-11N. Where did I ...
August 12, 2009

Physics
There is a figure q1= 23 uC and q2= 16 uC. The force on q1 points in the -x direction. q1 is at (0,1) q2 is at (2,0) q3 is at (2,2) What is the magnitude of the force on q1? I am doing this (9*10^9)(23*16)(-4ihat)7^3 where did i go wrong?
August 12, 2009

Econ
Suppose a new type of pest, which is immune to existing pesticides, attacks the wheat crop. As a result, at a given quantity of clothing, the economy is able to produce fewer bushels of wheat than before the attack of the new pests. Adjust the PPF curve to show the economy'...
August 11, 2009

Physics
There is a proton that is at the origin and an electron at the point x= 0.42nm and y=0.36nm. Find the elctric force on the proton for Fx and Fy. For my total force I got 7.53*10^-11N For my x direction I got 5.8 *10^-11N, and for my y dirction i got 5.1 *10^-11N. Where did I ...
August 11, 2009

Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the Earth’s ...
August 10, 2009

math
The ratio of staff to patients at Lakeview is 8 to 7. If total staff plus patients is 1575 people, how many staff are at Lakeview? help me get started on how to solve this
July 20, 2009

math
The ratio of staff to patients at Lakeview is 8 to 7. If total staff plus patients is 1575 people, how many staff are at Lakeview? help me get started on how to solve this
July 20, 2009

English
Hi, I need a title for my essay it is about woman being unhappy with their marriages. I wanted to call it dissatisfying Marriages. If you have a better title that you can offer, please do.
July 7, 2009

Science
What electrical appliance uses a 1.5 Volt battery?
May 8, 2009

World War 1
HOW MANY SHIPYARDS DID WE HAVE DURING WORLD WAR 1?
May 5, 2009

language(involes songs)
MAYBE A KIND OF FASTISH AND PANICKY SONG BECAUSE THERE IS A FIRE.
May 5, 2009

science
I think it is rice because popcorn can not fit together without crumpling and rice sticks really well together.
May 5, 2009

4th grade vocab
The hiking territory was 500 sq. feet.
May 4, 2009

division
You could ask your teacher and she could probably teach you. or your parents.
May 4, 2009

??????
its ok!
May 4, 2009

??????
what site?
May 4, 2009

??????
to give you a hint of which one it is, the second letter is an o.
May 4, 2009

??????
Thank you!!!!!
May 4, 2009

??????
also what were they than?
May 4, 2009

??????
Dang! But ok.
May 4, 2009

??????
What was the main trainning center during world war 1
May 4, 2009

4th grade geography
Ok thanks!
April 30, 2009

4th grade geography
which website is for The Great Pyramid?
April 30, 2009

4th grade geography
Thanks for your help everybody!
April 30, 2009

4th grade geography
what country and year were these manmade stone constructions built? The Great Wall Mount Rushmore Itaipu Dam Stonehenge and The Great Pyramaid
April 30, 2009

College Algebra
Another one if you can help Solve the formula for the indicated variable. N=a+b Ln (c/d) for c
April 30, 2009

MATH 1111
i do not know how! But i like your Name!!!!! (same as mine!)
April 30, 2009

MATH 1111
College Algebra help with logarithms! Ln (x-4) - Ln (x+1) = 16 How do I take natural logs?? it's a study guide question for our final exams
April 30, 2009

math
range is the numbers that is the first number and the last number so you would say the range is 5 to 10. The mode is the number that appears the most.
April 30, 2009

Science
Frogs and lizards
April 29, 2009

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