Friday
November 21, 2014

Posts by jessica


Total # Posts: 2,674

finance
how long will it take to double my investment with 2500 at 4% annually
October 29, 2011

Physics
A rocket, 8975 kg, traveling at 1255 m/s East explodes into two pieces. if one piece, 2450 kg, moves at 750.0 m/s due south, what is: the mass of the second piece? the momentum of the second piece? the velocity of the second piece?
October 27, 2011

statistics
In 2006, the General Social Survey asked, "Do you see yourself as someone that tends to be lazy?" For this question, 20 people said that they definitely did out of 1513 randomly selected people. What is the 95% confidence interval for the proportion of all Americans ...
October 27, 2011

Physics
A proton, moving in negative y-direction in a magnetic field , experiences a force of magnitude F, acting in the negative x direction. a) What is the direction of the magnetic field producing force? b) Does your answer change if the word proton is replaced by electron? I get a...
October 25, 2011

Chemistry
What caroxylic acid and alcohol is needed to produce isopentyl propionate?
October 24, 2011

Word Problem
A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 212 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
October 24, 2011

BEDMAS with decimals
30.8
October 24, 2011

Physics
An isolated segment of wire of length L=4.50 m carries a current of magnitude i=35.0 A at an angle theta=50.3 degrees with respect to a constant magnetic field with magnitude B= 6.70E-2 T. What is the magnitude of the magnetic force on the wire? a) 2.66 N b) 3.86 c) 5.60 N d) ...
October 24, 2011

Chemistry
What carboxylic acid and alcohol is needed to produce isobutyl propionate?
October 24, 2011

Chemistry
What carboxylic acid and alcohol is needed to produce propyl acetate?
October 24, 2011

Chemistry
What caroxylic acid and alcohol is needed to produce isopentyl propionate?
October 24, 2011

Physics
Suppose that the magnetic field o fthe Earth were due to a single current moving in a circle of radius 2988 km through the earth’s molten core. The strength of the Earth’s magnetic field on the surface near a magnetic pole is about 6.00E-5 T. About how large a ...
October 23, 2011

Physics
1)A wire is carrying a current, i, in the positive y-direction. The wire is located in a uniform magnetic field, B, oriented in such a way that the magnetic force on the wire is maximized. The magnetic force acting on the wire, FB, is in the negative x direction. What is the ...
October 23, 2011

Physics
Please help me with these choose the best answers since I'm not sure of my answers. A current element produces a magnetic field in the region surrounding it. at any point in space, the magnetic field produced by this current element points in a direction that is a) radial ...
October 23, 2011

Physics
1)A wire is carrying a current, i, in the positive y-direction. The wire is located in a uniform magnetic field, B, oriented in such a way that the magnetic force on the wire is maximized. The magnetic force acting on the wire, FB, is in the negative x direction. What is the ...
October 23, 2011

Physics
Please help me with these choose the best answers since I'm not sure of my answers. A current element produces a magnetic field in the region surrounding it. at any point in space, the magnetic field produced by this current element points in a direction that is a) radial ...
October 23, 2011

Physics
1)A wire is carrying a current, i, in the positive y-direction. The wire is located in a uniform magnetic field, B, oriented in such a way that the magnetic force on the wire is maximized. The magnetic force acting on the wire, FB, is in the negative x direction. What is the ...
October 23, 2011

Physics
1)A wire is carrying a current, i, in the positive y-direction. The wire is located in a uniform magnetic field, B, oriented in such a way that the magnetic force on the wire is maximized. The magnetic force acting on the wire, FB, is in the negative x direction. What is the ...
October 23, 2011

Physics
1)A wire is carrying a current, i, in the positive y-direction. The wire is located in a uniform magnetic field, B, oriented in such a way that the magnetic force on the wire is maximized. The magnetic force acting on the wire, FB, is in the negative x direction. What is the ...
October 23, 2011

Mathematics
Determine the quadratic equation whose solutions are: 3 and -2. Explain your solution
October 21, 2011

Mathematics
In 11 years, the age of Russel will be half of the square of the age he was 13 years ago. Find his present age. Explain your solution
October 21, 2011

Physics
Two long parallel wires separated by a distance, d, carry currents in opposite directions. If the left-hand wire carries a current i/2, and the right-hand wires carries a current i, determine where the magnetic field is zero.
October 20, 2011

geometry
DEFG is an isosceles trapezoid. Find the measure of E.
October 20, 2011

math
a candy sells chocolate fudge for $4.50 for the first pound and $2.50 for each additional pound. how many pounds could be purchased with $29.00?
October 18, 2011

physics
At the airport, you pull a 18 kg suitcase across the floor with a strap that is at an angle of 41° above the horizontal. Find the normal force and the tension in the strap, given that the suitcase moves with constant speed and that the coefficient of kinetic friction ...
October 18, 2011

math help me please!!!!!!!!!!!!!!!!
no affence esha but actually for that answer i would say thats wrong cause if you add it correctly its actually 1,442
October 18, 2011

Chemistry Lab
Suppose for the reaction of Cu(NO3)2 + NaOH, you have not added enough sodium hydroxide to precipitate all the copper as copper hydroxide Cu(OH)2. a)How could you tell that not all the copper had precipitated? b)what effect would this have on the final yield?
October 18, 2011

Calculus
I get 2(sqrt3/2)(1-(3/4)1^(4/3)) But that's not the answer.
October 13, 2011

Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the y-axis and whose cross-sections perpendicular to the y axis are equilateral triangles. I asked this same question for the y-axis around the x-axis (Thanks for the explanation) but I ...
October 13, 2011

Calculus
I don't see any error, but webwork just says y= , I can't enter anything besides what y is supposed to be. The slope I took was a method I found in my book but it only says that, how to take the slope, and I don't even know if I had that right. But I cant enter ...
October 13, 2011

Calculus
Webwork asks me to enter an answer for y=
October 13, 2011

PLEASE I really need help!!!
I dont know what to do for this problem.
October 13, 2011

Calculus
Find the equation (in terms of x and y) of the tangent line to the curve r=3sin3(theta) at theta=pi/4. I dont know if I'm taking the right approach for this question but her goes what I did: I found the slope I got (9(-1/2)(sqrt3/2)+3(sqrt3/2)(1/2))/(9(-1/2)(1/2)-3(sqrt3/2...
October 13, 2011

Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the y-axis and whose cross-sections perpendicular to the y axis are equilateral triangles. I asked this same question for the y-axis around the x-axis (Thanks for the explanation) but I ...
October 13, 2011

Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the y-axis and whose cross-sections perpendicular to the y axis are equilateral triangles. I asked this same question for the y-axis around the x-axis (Thanks for the explanation) but I ...
October 13, 2011

Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the y-axis around the x-axis. What I did was: V=ç(0,1)pi(1-x^3)^2 dx v=pi(x^7/7-x^4/2+x) and I evaluated it for one since 0 is just going to be 0. and I got 9pi/14 The answer ...
October 13, 2011

Calculus
Find the volume of the solid obtained by rotating the region bounded by y=x^3, y=1, and the y-axis around the x-axis. What I did was: V=ç(0,1)pi(1-x^3)^2 dx v=pi(x^7/7-x^4/2+x) and I evaluated it for one since 0 is just going to be 0. and I got 9pi/14 The answer ...
October 13, 2011

English
I was wondering if you could help me revise this? Questions plague the mind of many readers of why exactly Tessie Hutchinson was stoned in Shirley Jackson’s, “The Lottery”. This gruesome tale tells of an innocent woman stoned in a small village of 300 people. In...
October 11, 2011

physics
Two blocks with mass m1 = 7.2 and m2 = 7.7 are connected by a massless string over a frictionless and massless pulley. The angle of the incline is equal to 45.0. The kinetic coefficient of friction between m1 and the incline is 0.22. What is the minimum value of the static ...
October 9, 2011

English
I am writing this essay about Shirley Jackson's "The lottery" My essay is supposed to be about i think i want to talk about stoning in south africa( how long it lasted, if it still takes place, was it for punishment or for no reason) and the second body paragraph...
October 9, 2011

English Please help
i have an essay and ive been researching the topic like for freaking ever and i havent been able to fine anything "scholarly" through collins(my college's) libraries searching databases do you know any scholarly websites..?? Like literally ive been researching ...
October 9, 2011

healthcare
required annually pap smear: government is limiting those who have medicaid only to recevie the pap smear only every 3rd year but those you have private insurance it will cover it annually . what do you think opinions
October 8, 2011

Chemistry
I got 9.25527 for the pKa then for the Henderson-Hasselbalch equation: 9.00=9.25527+log(.600/acid) 10^(-.25527)=(.600/acid) .5556/.600M=acid acid=.925925...M molarity (.925925)*2.10L= 1.94 moles of NH4Cl 1.94 moles *53.4 grams=104.02g of NH4Cl
October 8, 2011

Chemistry
How many grams of dry NH4Cl need to be added to 2.10L of a 0.600M solution of ammonia,NH3 , to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8x10^-5. I just wanted to make sure I dd this write, can you please check my work? Thank you!!!! I found the pKa ...
October 8, 2011

Geography
Graticules on small scale map represents ________ and ______. Graticules on large scale map represents ________ and ______.
October 7, 2011

physics
2. A tiger jumps horizontally off of a 1.7 meter tall rock with a velocity of 3.2. How far from the base of the rock does the tiger land?
October 7, 2011

english
Please tell me the anthropological perspective. Is the culture, the cross-disciplinary discipline etc? Thanks!
October 7, 2011

Biology
Using Darwin’s Theory of Evolution, describe how Eukaryotic cells could have developed from Prokaryotic cells. What advantages would the Eukaryotic cells have over the Prokaryotic?
October 6, 2011

chemistry
yes thank you the 1st one was considered strong :)
October 5, 2011

chemistry
a)H2SO4 b)CuS c)HF d)Zn(NO3)2 Which are strong, weak, or non electrolytes. I was think A was strong B and C were weak and D is non
October 5, 2011

Chemistry
Find the standard entropy (S^0) of ice at 25K. delta Hfus = 6009 J/mol and Cp of ice = 38 J/molK.
October 5, 2011

Algebra
The larger of two numbers is 23. if three times the number is 5 more than eight times the smaller, find the smaller number.
October 4, 2011

Physics
A motorist travelling at 107 km/hr is being chased by a police car at 133 km/hr. If the police car starts from 3.0 km back, how long does it take to catch the motorist? Leave time in hours
October 4, 2011

Mechanics
When a problem is statically indeterminate, what additional equations do you need to solve?
October 4, 2011

Physics
i dont get how to get rid of all the t's...
October 4, 2011

Physics
A hot air balloon is rising at a constant velocity of 13.3 m/s. When the balloon is at a height of 15 m, a heavy object is dropped overboard. IF air resistance on the object is neglected, how long does it take for it to reach the ground?
October 4, 2011

Physics
You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 113 N, the sled has an acceleration of 1.3 m/s2 If the sled has a mass of 6.6 kg, what is the mass of your little sister?
October 4, 2011

Mechanics
What does a polar moment of inertia depend on?
October 3, 2011

Math
A triangle and trapezoid share a 15 inch base and a height of 10 inches. For what values of b is the area of the trapezoid less than twice the area of the triangle?
October 3, 2011

biology
what is activation energy?
October 3, 2011

math stats
you draw from a deck. if you get a red card you win nothing. if you get a spade you win $5. for any club you win $10 plus an extra $20 for the ace of clubs. A. create a probability model for the amount you win. B. Find the expected amount you will win. C. What would you be ...
October 3, 2011

Statistics
A bag contains two blue, three purple, four yellow, two red, three green and one orange marbles. What is the conditional probability that, without replacement, the second marble is purple given that the first marble is green?
October 2, 2011

Statistics
A bag contains two blue, three purple, four yellow, two red, three green and one orange marbles. What is the conditional probability that, without replacement, the second marble is purple given that the first marble is green?
October 2, 2011

english writing
what does the word class means to you? Why or why not?
October 2, 2011

Chemistry
A mixture contains only CuCl2 and FeCl3. A 0.7391 g sample of the mixture is completely dissolved in water and treated with silver nitrate. if 86.91 mL of 0.1463 M silver nitrate soultion is needed to precipitate all the chloride as silver chloride, what is the weight percent ...
October 2, 2011

Chemistry
An aqueous solution with a density of 0.998 g/ml at 20 degrees Celsius is prepared by dissolving 12.8 mL of CH3CH2CH2OH (p=0.803 g/mL) in enough water to make 75.0 mL of solution calculate the percent (w/w), percent (w/v), parts per million, and molality?
October 2, 2011

Chemistry
The manufacture of ethanol (CH3CH2OH) yields diethyl ether ((C2H5)2O) as a by product. the complete combustion of a 1.005 g sample of the manufactured product yielded 1.963 g of carbon dioxide. what are the weight percents of ethanol and diethyl ether in the sample?
October 1, 2011

Chemistry
Aluminum metal and Iron(III) oxide react to give aluminum and iron metal. What is the maximum amount of Iron that can be obtained from a reaction mixture containing 2.5 grams of aluminum and 9.5 grams of Iron(III) oxide? What mass of excess reactant remains?
October 1, 2011

Chemistry
An aqueous solution with a density of 0.998 g/ml at 20 degrees Celsius is prepared by dissolving 12.8 mL of CH3CH2CH2OH (p=0.803 g/mL) in enough water to make 75.0 mL of solution calculate the molarity
October 1, 2011

History
The monroe doctrine was proclaimed in repose to revolution in____________. southern europe or latin america. I choose latin america
September 30, 2011

English
how to write a newspaper review?
September 29, 2011

english
Please tell me which of these two are Implicit statement and implicit premises or conclusions and please tell me the difference, I have quiz on this. Thanks! 1)Hilter rose to power because the Allies had crushed the German economy after workd war one. Therefore if the Allies ...
September 28, 2011

calculus
Find the slope of the curve at the indicated point. f(x)= abs(x) at a. x=2 b. x=-3 f(x)= abs(x-2) at a. x-1
September 28, 2011

history
i'm sorry it's suppose to be.... was the proposed capitol philadelphia
September 28, 2011

history
Before the change to a site on the potomac the was the proposed capitol philadelphia?
September 28, 2011

Math
The ratio of a rectangle is 3:4, its perimeter is 32in. What are the lengths of the sides?
September 28, 2011

trig
Find a cofunction with the same value as sin 19 degrees
September 27, 2011

help please
The pattern of learning that is strongest is called : A.learning modality B.intelligence activity C.learning style D.both a&c I got c what do you think?
September 25, 2011

help please
A is correct answer or not?
September 25, 2011

United States Government
Which of the following would NOT be advocated by modern conservatism? a. Free markets b. Small governments c. Laissez-faire economics d. Welfare programs e. Reliance on tradition I would say Reliance on tradition. what say?
September 24, 2011

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes yesterday , but I'm wondering if it is suppose to have anything else done to it-it seems ...
September 23, 2011

algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it seems way too easy ...
September 22, 2011

chemistry
analyze and explain the buffer system in buffered aspirin(carboxyic acid)
September 22, 2011

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it seems way too easy ...
September 22, 2011

Algebra II-Please recheck
Is that in simplest form or am I suppose to do something else with it? It seems too easy-
September 22, 2011

Algebra II
the first step should be x^2+2x-2x-4 = x^2-4(I forgot to put the (-4)
September 22, 2011

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? (x-2)(x+2)(x-4)original problem 1.x^2 + 2x-2x=x^2-4) 2. (x^2-4)(x-4) 3. x^3-4x^2-4x+16=0
September 22, 2011

government
first result was this page XD
September 20, 2011

government
Do voter ID laws conflict with anything in the Constitution besides, situationally, the 24th Amendment?
September 20, 2011

math
15 1/36 - 1 1/9+3 1/3
September 19, 2011

english
Hi, I need help finding these 3 questions please: I couldnt find them, thanks!!(1) what are the ethical concerns of embryonic stem cell research? (2) what are the benefits of related to adult stem cell reseach? (3) who are the voices in our society who will decide on how the ...
September 18, 2011

Alg
.Write an algebraic expressoin for4 times the sum of q and p HELPPP PLZZZ :)
September 9, 2011

geometry
if n is a prime number than n +1 is not . True or false
September 8, 2011

geometry
if n is a prime number than n +1 is not . True or false
September 8, 2011

physics
A car is driven east for a distance of 41 km, then north for 21 km, and then in a direction 30° east of north for 25 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's total ...
September 8, 2011

PHYSICS
its going to be 58x10^2 or 5.8x10^3
September 8, 2011

Reading
All of the little things. Like where the story takes place, when the time frame is, what the characters look like.. etc.
September 8, 2011

English
What all should I include in my intro paragraph for a 5 paragraph essay? My topic is about how people take eyesight for granted.
September 8, 2011

English
winter and carnival need to be capitalized because it is the name of a specific carnival.
September 8, 2011

Chemistry
They are both the same thing?
September 8, 2011

Pages: <<Prev | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | Next>>

Search
Members