Saturday
November 22, 2014

Posts by Sarah


Total # Posts: 4,396

Finance
anderson inc has 5,000,0000 debt at 10% per year, sale of 10,000,000, a tax rate of 40% and a net profit margin of 6%, what is anderson's times interest earned ratio?
April 17, 2013

science
Pt | Cr3+ (2.7010-4 M), Cr2+ (0.500 M) || Pb2+ (0.0710 M) | Pb Consider the following electochemical cell. Calculate the voltage of the cell, Ecell, including the sign.
April 17, 2013

chem
In acidic solution copper(I) ion is oxidized to copper(II) ion by nitrate ion. I got Cu^+(aq) + NO_3^-(aq) --> Cu^2+(aq) + NO_3^2-(aq)but itswrong
April 17, 2013

chem
for the E0cell i got 2.35 and for Q i got 8.186 then when i plugged that into the equation i get 2.7101V is that correct? I plugged 1 in for n.
April 16, 2013

chem
3 Ce4+(aq) + Cr(s) ¨ 3 Ce3+(aq) + Cr3+(aq) What is the emf of this cell when [Ce4+] = 2.9 M, [Ce3+] = 0.11 M, and [Cr3+] = 0.015 M?
April 16, 2013

chemistry
If the equilibrium constant for a one-electron redox reaction at 298 K is 7.8 104, calculate the corresponding ÄG° and E°cell. how would i set this problem up?
April 16, 2013

BIO
You can easily do this by using a biology textbook or searching it on google.
April 14, 2013

chemistry
then do you subtract the given cell potential from that?
April 14, 2013

chemistry
A voltaic cell that uses the reaction Tl3+(aq) + 2 Cr2+(s) ¨ Tl+(aq) + 2 Cr3+(aq) has a measured standard cell potential of +1.19 V. determine E‹red for the reduction of Tl3+(aq) to Tl+(aq).
April 14, 2013

calculus
Find the length of the curve over the given interval: x=t+1 y=ln cos(t) for t=0 ---> t=pi/4
April 14, 2013

precalc
1. A plane is headed at 122 degrees with an air speed of 350mph in a wind that is blowing from 38 degrees. Find the ground speed of the plane and the speed of the wind if the actual flight was at 133 degrees. 2. A plane is heading at 20 degrees at 300mph If a wind is blowing ...
April 14, 2013

Histroy
Religious tolerance
April 14, 2013

chem
would it be this? Cd(s) + Cl2(g) + 2e==> Cd^2+(aq) + 2e + 2Cl^-(aq)
April 13, 2013

chem
y dont you use Pt for the second equation?
April 13, 2013

chem
A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode. A salt bridge connects the two beakers. Write the equation for ...
April 13, 2013

ap chemistry
The volume of 0.100 mol of helium gas at 34°C is increased isothermally from 1.00 L to 4.50 L. Assuming the gas to be ideal, calculate the entropy change for the process.
April 12, 2013

chem
La(s) ¨ La(OH)3(aq) (basic solution) Complete and balance the following half-reactions
April 11, 2013

Tourism Industry
Which of the following is a key tourism management challenge caused by the seasonality of demand, but greatly impacting service quality? A. revenue share B. loyalty systems C. access restrictions D. condo rating systems E. human resource scheduling
April 9, 2013

tourism industry
Governments invest in many different industries, including the tourism industry. As a result, economic impact studies are conducted to assess the ______________ of this government spending. A. TFC B. TSA C. MUI D. ROI E. TEI
April 9, 2013

chem
hoiw do you know that? is it teh only one?
April 9, 2013

chem
From the following list, identify the ions that are more easily reduced than H+. Fe2+(aq) Al3+(aq) Cr3+(aq) Ag+(aq) Sn4+(aq)
April 9, 2013

HISTORY
how did the US support Diem's regime between 1954-1964?
April 8, 2013

Newton's Laws
1. An 1760 kg car is moving to the right at a constant velocity of 2.94 m/s. (a) What is the net force on the car? (b) What would be the net force on the car if it were moving to the left? 2.A freight train has a mass of 6 107 kg. If the locomotive can exert a constant pull of...
April 8, 2013

chmistrye
Using the data in this table of the thermodynamic quantities for selected substances and given the pressures listed, calculate ƒ¢G at 25‹C for each of the following reactions (a) N2(g) + 3 H2(g) ¨ 2 NH3(g) PN2 = 2.0 atm, PH2 = 5.4 atm, PNH3 = 2.2...
April 7, 2013

chem
what is the Ka equation for HCHO2 i thought it was K_{a} = [CHO_2][H^+]/[HCHO_2] but its not correct
April 7, 2013

history
Why did the US intervene in Vietnam, during the Vietnam War, and support Diem's regime for econommic reasons? Not only for America's own good but for what else?
April 7, 2013

chemistry
How many Cl atoms are in a 2.54g sample of CCl4?
April 6, 2013

math
Jose, Paul,and Dan went fishing. It was a good day, and all three of them caught a fish. Dan's fish weighed four times as much as Paul's fish, and Jose's fish weighed half as much as Dan's fish. Altogether, the three fish weighed 21 pounds. How much did each ...
April 5, 2013

english/writing
thank you both! :)
April 5, 2013

english/writing
i want to say that the novel is a transcendentalist story of the strength of individual character
April 5, 2013

english/writing
how can i reword this sentence differently and better? it sounds wrong to me. In conclusion, The Scarlet Letter is a transcendentalist novel of the strength of individual character.
April 5, 2013

Science
How does heart rate increase? Does it double? Does it increase with the intensity of the workout? I already know the background of heart rate but have trouble with the questions above.
April 4, 2013

english/writing
Sounds so much better....Thank You! :)
April 4, 2013

english/writing
how can i write this sentence in a different way The Scarlet Letter was one of the first mass-produced books in the United States upon its release in 1850, and it received much praise and criticism for the novels supposed morbidity.
April 4, 2013

math
jose, Paul, and Dan went fishing. It was a good day,and all three of them caught a fish. Dan's fish weighed four times as much as Paul's fish, and Jose's fish weighed half as much as Dan's fish. Altoghther, the three fish weighed 21 pounds. How much did each ...
April 4, 2013

math
what percent of 6,350 is 1,397?
April 4, 2013

English/writinh
Im having a hard time starting my introduction for my essay. I already wrote my thesis statement which is: " In Nathaniel Hawthorne’s, The Scarlet Letter, it suggests that one must find their own internal strength and strive for individual redemption by applying the ...
April 2, 2013

chemistry
If a 1.59 mole sample of argon occupies 3.07 L at constant temperature and pressure then what volume will 4.35 moles of argon occupy at the same conditions?
April 2, 2013

Physics
d = 1/2 (a)(t)^2 = 160 m at rest, Vo = u = 0 m/s I found the final velocity by using v = u +at = 0 + (20)(4) = 80 m/s d = vt t = 160 m / 80 m/s = 2 s I might be wrong at this I know d= Vot - 1/2 (a)(t)^2 By any chance, what textbook are you using?
April 1, 2013

Science Physics
An object weighs 12 N on earth. When it is brought to Mars, it has a weight of 4.8 N. What is the acceleration due to gravity on Mars? (Taking the acceleration due to gravity on earth is 10 m/s²)
April 1, 2013

Mechanics
Two objects with masses 5.60 and 2.40 hang 0.600m above the floor from the ends of a cord 8.00m long passing over a frictionless pulley. Both objects start from rest.Find the maximum height reached by the 2.40kg object
April 1, 2013

Mechanics
Two objects with masses 5.60 and 2.40 hang 0.600m above the floor from the ends of a cord 8.00m long passing over a frictionless pulley. Both objects start from rest.Find the maximum height reached by the 2.40kg object
March 31, 2013

math
Karina drew a shape with 2 pairs of parallel sides and no right angles. Which shape could Karina have drawn? A. square B. rhombus C. rectangle D. trapeziod
March 27, 2013

algebra
wrong
March 27, 2013

Algebra
Given f(x) = (x-1)(x-2) + (x-2)(x-5) + (x - 3)(x-8), what are the sum of the roots of f(x)?
March 26, 2013

physics
thank you
March 26, 2013

physics
How to calculate the series AC coupling capacitance? Is there an equation for this? Thank you for any help
March 26, 2013

chemistry
Why must the water levels be equal in a tube before measuring the volume of gas?
March 26, 2013

PHYSICS
Thanks! That works and makes sense. :)
March 26, 2013

PHYSICS
Here is one of my questions from my physics study. It tells me the answer (35 J), but how do I find that answer? I would appreciate a formula or step by step calculation. Thanks! :) A 30 kg kid on rollerskates is moving 1 m/s. His brother pushes him with a force of 5 N. What ...
March 26, 2013

Reading
In Ralph Waldo Emerson's "Nature", how does he show his idealism in the essay? I don't understand what the question's asking...what's idealism?? thank you!!!
March 25, 2013

Calculus
I've done p= x(3750 − 1/3x^2) and C = x(1000 + 70x + 3x^2) Profit= 3750x-1/3x^3-1000x-70x^2-3x^3= 2750x-70x^2-4/3x^3 P'(x)= 2750-140x-12x^2 Then I did the Quadratic Formula and and got 22 but it's wrong
March 25, 2013

Calculus
The monthly demand function for a product sold by a monopoly is p = 3750 − 1/3x^2 dollars, and the average cost is C = 1000 + 70x + 3x^2 dollars. Production is limited to 1000 units and x is in hundreds of units. (a) Find the quantity that will give maximum profit. (b) ...
March 25, 2013

Calculus
The monthly demand function for a product sold by a monopoly is p = 3750 − 1/3x^2 dollars, and the average cost is C = 1000 + 70x + 3x^2 dollars. Production is limited to 1000 units and x is in hundreds of units. (a) Find the quantity that will give maximum profit. (b) ...
March 25, 2013

math
The monthly demand function for a product sold by a monopoly is p = 3750 − 1/3x^2 dollars, and the average cost is C = 1000 + 70x + 3x^2 dollars. Production is limited to 1000 units and x is in hundreds of units. (a) Find the quantity that will give maximum profit. (b) ...
March 24, 2013

science 207
chronic asthms when caused by air p[ollution is ,most likely due to: short term pollutant exposer long term pollutant exposer thbe weather during an episode of pollutant expossure exposure to a cerain kind of pollutant
March 24, 2013

science 297
chronic asthma when caused by air pollution is most likely due to
March 24, 2013

statistics
The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of the scores, a “B” grade to the...
March 24, 2013

Chemistry
What is the pH of a .0035 M Ba(OH)2 solution. I did -log(.0070) to find pOH So 14-2.15=11.85 pH? Just want to double check.
March 22, 2013

HELP PHYSICS!
Four charges with equal magnitudes of 7.81 × 10-12 C are placed at the corners of a rectangle. The lengths of the sides of the rectangles are 2.52 cm and 4.02 cm. Find the magnitude of the electric field at the center of the rectangle in Figures a and b. img166....
March 20, 2013

PHYSICS HELP!
The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -5 x 10-9 C placed at corner A and then at corner B. q1= 1.5e-9...
March 20, 2013

Physics
Four charges with equal magnitudes of 7.81 × 10-12 C are placed at the corners of a rectangle. The lengths of the sides of the rectangles are 2.52 cm and 4.02 cm. Find the magnitude of the electric field at the center of the rectangle in Figures a and b. img166....
March 20, 2013

Physics
The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -5 x 10-9 C placed at corner A and then at corner B. q1= 1.5e-9...
March 20, 2013

Ashford
This week you will analyze the computational complexity of the game you select. A good way to do this is to determine the steps of the game in the algorithm format from Week 4 and figure out how many steps it could take at maximum to finish the game. Include this analysis in ...
March 19, 2013

Ashford
Often, after graduation, students report that they can barely remember some of the concepts they studied in school. This is particularly true if a difficult concept is introduced. As asymptotic notation is perhaps one of the most difficult concepts to grasp and apply in this ...
March 19, 2013

Ashford
Often, after graduation, students report that they can barely remember some of the concepts they studied in school. This is particularly true if a difficult concept is introduced. As asymptotic notation is perhaps one of the most difficult concepts to grasp and apply in this ...
March 19, 2013

Physics
The process of inhalation in the lung may be modelled (very simplistically) by the pV diagram shown below , in which the pressure drops sharply in the lungs at constant volume, followed by expansion at constant pressure, and then finished by the pressure returning to ...
March 19, 2013

Physics
The process of inhalation in the lung may be modelled (very simplistically) by the pV diagram shown below , in which the pressure drops sharply in the lungs at constant volume, followed by expansion at constant pressure, and then finished by the pressure returning to ...
March 19, 2013

math
A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg)?
March 18, 2013

physics
A thin spherical shell of mass M = 2.00 kg is released from rest at the top of an incline of height H=1.31 m and rolls without slipping to the bottom. The ramp is at an angle of θ = 24.1o to the horizontal. Calculate the speed of the sphere's CM at the bottom of the ...
March 18, 2013

Physics
What is the gibbs free energy for the reaction a)temperature b)800 degrees celsius c)comment on whether the reactions are spontaneous or not (CHEMICAL REACTION) deltaH = -100kJ delta S= -200 J/K
March 18, 2013

Math
5/4 + 7/4 x cos(2x)+ 3/4 x cos(4x)- 1/8 x cos(2x) x cos(4x)
March 17, 2013

Math
Rewrite in terms of an expression containing only cosines to the power 1. 4 cos^6x
March 17, 2013

physics
The engine on a 0.2kg model airplane exerts a forward force on the plane of 10N. If the plane accelerates at 2m/s2, what is the magnitude of the resistive force due to the wind acting on the airplane?
March 16, 2013

Calculus
I'm extremely confused on what to do in part a of this question. Consider the curve given by x=3sin(theta), y=1+2cos(theta), 0<=theta<=3pi/2 (a) Eliminate the parameter and find a Cartesian (Rectangular) equation for the curve.
March 13, 2013

pre calc
The front sprocket off a bicycle is 12 centimeters and the rear one is 5 centimeters. What is the linear velocity of the chain around the back sprocket? if the bicycle has tires that have a 38 centimeter diameter, how fast is the bicycle moving?
March 12, 2013

pre calc
The front sprocket off a bicycle is 12 centimeters and the rear one is 5 centimeters. What is the linear velocity of the chain around the back sprocket? if the bicycle has tires that have a 38 centimeter diameter, how fast is the bicycle moving?
March 12, 2013

precalc
The front sprocket off a bicycle is 12 centimeters and the rear one is 5 centimeters. What is the linear speed of the chain going around the first sprocket?
March 12, 2013

Math - Probabilities
There are a total of 116 foreign language students in a high school where they offer Spanish, French, and German. There are 22 students who take at least 2 languages at once. If there are 47 Spanish students, 45 French students, and 49 German students, how many students take ...
March 11, 2013

Math
Richard borrowed 180000 dollars from his bank to help finance the purchase of a house. The bank charges interest a rate of 5.9 percent per year compounded monthly. Richard has agreed to repay the loan in equal monthly installments over 25 years. How much should each payment be...
March 11, 2013

Math
I need help on the second part of the question :/
March 11, 2013

Math
Jim made a down payment of 1000 dollars toward the purchase of a car. To pay the balance of the purchase price, he has secured a loan from his bank at the nominal rate of 5.1 percent per year compounded monthly. Under the terms of his finance agreement, he is required to to ...
March 11, 2013

Stats
Directions: Suppose you have a standard deck 52 cards (4 suits: hearts, diamonds, clubs, and spades each suit has 13 cards (1/4 of the deck) and those 13 cards include one ace,and numbers 2 through 10 and 3 face cards: a jack a queen and king) suppose you pick a card at ...
March 10, 2013

MATH VERY URRRGENT!!!!!!!!!!!!!
1. What is the term for data that are grouped closely together? (1 point) Unselected answer (0 pts) outlier Unselected answer (0 pts) linear Unselected answer (0 pts) positive Correct answer (1 pt) clustering 1 /1 point 2. What association would you expect if graphing height ...
March 9, 2013

algebra
THE COMMUTER Sensible Sally has a job that is 35 miles from her home. She needs to be at work by 8:15 a.m. Sally wants to maximize her sleep time by leaving as late as possible but still get to work on time. From experimentations, Sally discovered that if she left at 7:10, it ...
March 7, 2013

Physicis
The gravitational force between two objects is 2,000N. They are moved so that the distance between them is four times the original distance. What is the new force between the objects?
March 7, 2013

Math(problem solving)
Four darts are thrown at this dartboard. If all four darts hit the board, how many different point totals are possible? there are 4 circles with point totals: working out from the middle bulls eye.. bulls eye = 9 2nd circle = 7 3rd circle = 4 outter circle = 1 please help, i&#...
March 6, 2013

probability
six out of every 400 cans of paint are found to be defective. If you buy four cans of paint,what is the probability that one can will be defective.
March 5, 2013

Math
In a set of 400 ACT scores where the mean is 22 and the standard deviation is 4.5, how many scores are expected to be lower than 26.5? How many of the 400 scores are expected to be greater than 31?
March 3, 2013

Algebra and Trigonometry
thats another question that i have
March 3, 2013

Algebra and Trigonometry
If an airplane wishes to fly north east at 300 mph has a wind blowing from 300 degrees at 60 mph, what heading and velocity must they have to accomplish this?
March 3, 2013

Algebra and Trigonometry
A person who can swim at 3 m/s wishes to swim straight across a river flowing at 2 m/s south. What heading should they swim at? How long will it take to cross the river if it is 56 m wide?
March 3, 2013

Algebra and Trigonometry
A plane if flying at 200 mph with a heading of 45 degrees and encounters a wind of 100 mph from the west. What is the resulting velocity and heading?
March 3, 2013

Trig
A plane if flying at 200 mph with a heading of 45 degrees and encounters a wind of 100 mph from the west. What is the resulting velocity and heading?
March 3, 2013

Life orientation
What can thembi do to deal with the unethical behaviour?name 4 action she can take. 3.3.3 How should discrimination in the work place be dealt with?
March 3, 2013

Life orientation
What,according to the basic conditions of employment act applies with regard to the contraventions that you've identified?
March 3, 2013

maths
heather loves roses.in her rose garden she has half as many pink roses as red,and four time as many red ones as white.there are 37 roses that are either yellow or white.twenty are yellow.how many roses are in heather's garden.
March 2, 2013

Physics
Student E used the most precise scale; this can be seen by the number of digits after the decimal.
March 2, 2013

biology
for a lab it says prepare a 300 ml of .2% sodium bicarbonate solution. I am trying to find how many grams of NaHCO3 i need. so i did 300ml X .002 and got .6ml of NaHCO3. but how do I convert that to grams of NaHCO3
March 2, 2013

calculus II
please for any help. I'm just really confused with this problem.
March 2, 2013

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