Friday
April 18, 2014

Posts by sammy


Total # Posts: 454

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

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...

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?

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 p...

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 p...

math
find the number that makes the fractions equivalent 1/2=?

math
i am the one who asked the question

chemistry
Could someone explain dipole-dipole forces for me?

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.

2nd grade
what solids and liquids used i house

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

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

english
simple subject of this sentence Alex Tanner added a spoonful of vanilla

social studies
Prince Edward Island

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

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!

Home and Careers
What are the seven areas or personal grooming?

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.

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

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 num...

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

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...

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?

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

Chem
Wwhich compound does not dissociate? a. Table sugar

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?

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=261...

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(...

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 recei...

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?

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 electri...

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?

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 g...

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.

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

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 g...

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?

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'...

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 g...

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 elect...

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

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

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.

Science
What electrical appliance uses a 1.5 Volt battery?

World War 1
HOW MANY SHIPYARDS DID WE HAVE DURING WORLD WAR 1?

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

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

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

division
You could ask your teacher and she could probably teach you. or your parents.

??????
its ok!

??????
what site?

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

??????
Thank you!!!!!

??????
also what were they than?

??????
Dang! But ok.

??????
What was the main trainning center during world war 1

4th grade geography
Ok thanks!

4th grade geography
which website is for The Great Pyramid?

4th grade geography
which website is for The Great Pyramid?

4th grade geography
Thanks for your help everybody!

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

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

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

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

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.

Science
Frogs and lizards

Science
I do not think any animals live in blackberry bushes.

DRBOB
ok!

DRBOB
whats your question?

Math
i think it is 25. Both your friend and you are wrong because when you divide 30 by half you get 15.So 15+10=25.

Geography
I have been looking for a while for a good map! So Thank you SSSSOOOOO much!!!!!!!!!!

Geography
Thank you Ms.Sue!

Geography
Where can i go to get a map of the world during the civil war?

4th grade
The first Sammy is not me!

4th grade
those two Sammys are not just me!

4th grade
Sammy is very smart and i agree with Anna too!

4th grade
I think Anna is right too.

ALgebra
what would the x intercepts be for this equation? y=x^2-3x-4 thanks.

science
ok earth science what is a solstice and why do we have them?

Chemistry
FLVS!!!!

Maths
(x+5)(x-1) Expand the brackets

GEOGRAPHY
in what state are the Everglades located? What is the northernmost place on Earth called?

geography
could u help me think of sometihng to say though??

geography
thank you:)

geography
three groups - first nations, metis, and red river settlers around 1870

geography
describe how each of the three groups of people in Rupert's land lived.

art
Can anyone please explain to me what does it mean by "the individual approach of the artist"? THANKS A LOT!!!!!!!!!

cal
Water, at the rate 10 ft^3/min, is pouring into a leaky cistern whose shape is a cone 16' deep and 8' in diameter at the top. At the time the water is 12' deep, the water level is observed to be rising 4''/min. How fast is the water leaking away? Can anyone...

biology
Thank you so much !

biology
Can anyone tell me what a frog intestine nucleus should look like, and what a frog intestine cell membrane should look like? If anyone has a picture to show, that would be really helpful. Thanks in advance!

French
It's my first time using this site, but from what I have heard, it's really good. I had to write a paragraph using l'imparfait, le passe recent, plus que parfait, and the passe compose. Could anyone check my paragraph and tell me what I did wrong? I hope there aren...

physics
bobpursley, what does the mu stand for in your equation?

chemistry
So I should try separating the solids using a magnet, and then use water? If it's not too much to ask, could you write out a simple procedure for me?

chemistry
I need to create an experiment to seperate and identify the components of an unknown heterogeneous mixture and to recover as much of the seperated solid components as possible. The unknown mixtures may contain up to 4 of the following substances, one or none from the following...

Math/Chemistry
A watch loses 0.44 seconds every minute. How many minutes will the watch lose in 1 day?

Chemistry- HWK CHECK
no 5 is c!

statistics
a recent poll of 700 peole who work indoors found that 278 of the smoke. If the researchers want to be 98% confident of thier results to within 3.5% how large a sample is necessary? how do i work this problem?

statistics
a recent poll of 700 peole who work indoors found that 278 of the smoke. If the researchers want to be 98% confident of thier results to within 3.5% how large a sample is necessary? how do i work this problem?

math(is this how you work this)
solve the equation 15-4x=2(3x+1) 15-4x=6x+1 -4x+6x+1-15 2x-14 x=-14/2=-7

Calc
a partial moves along the x-axis so that its velocity at time t, for 0< = t = < 6, is given by a differentiable function v whose graph is shown above. The velocity is 0 at t=0, t=5, and the graph has horizontal tangents at t=4. the areas of the regions bounded by the t-a...

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