Tuesday
September 1, 2015

# Posts by Stephanie

Total # Posts: 1,098

calculus
Well, we know x=3 and y=8 and dx/dt=4. We need to find z (the distance from the particle to the origin) dy/dt, and finally our answer dz/dt. First solve for dy/dt y=2(3x+7)^(1/2) dy/dt=[2(1/2)(3x+7)^(-1/2)](3dx/dt) dy/dt=[(3x+7)^(-1/2)]3dx/dt dy/dt=[(3(3)+7)^(-1/2)](3(4)) dy/...
October 26, 2010

chemistry
strontium nitrate reacts with potassium iodate. What is its molecular,ionic and net ionic equations?
October 23, 2010

statistics
1.test wheter these samples represent populations that are different from the general population- sample of 10 with a mean of 44 and sample of 1 with a mean of 48. 2. The general population of individuals has a mean of 40 , a deviation of 6, and follows a normal curve. for ...
October 22, 2010

Chemistry
The following is given: 20 ml of HCl (2.0 M) added with 5 ml of Na2S2O3 (0.3 M) with 5 ml of H2O S2O3^-2(aq) + 2H^+1 (aq) --> S (s) + SO2 (g) + H2O (l) Calculate the following: a) Reaction rate when 30 mg of sulphur is formed (in 30 ml of solution) after 55 seconds. b) Rate...
October 20, 2010

algebra
the ratio of two integers is 9:7. their sum is 1024. find the two integers.
October 19, 2010

English
Thanks again. Believe I have hang of it now.
October 18, 2010

English
My last two that are confusing me. Identify verb and tell if transitive or intransitive. 1) Most people think of bamboo as a tree or a bush. 2) Bamboo belongs to the grass family. 1) think=intransitive 2) belongs=intransitive
October 18, 2010

English
Thank you very much.
October 18, 2010

English
Please check and see if I answered correctly. Have to identify the verb and tell if intransitive or transitive 1. In China people eat the tender shoots as a vegetable. 2. The Japanese also make flutes from the stems. 3. In some countries, bamboo cages hold animals. 1.eat=...
October 18, 2010

PHYSICS
Actually there are 3600seconds per hour. So the answer of 29.06m/s is correct.
October 17, 2010

PHYSICS
A 287-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.810, and the log has an acceleration of 0....
September 30, 2010

PHYSICS
Pluto has a mass of 1.30 1022 kg and a radius of 1.18 106 m (a) What is the acceleration due to gravity on Pluto? (b) How much would a 4.7-kg person weigh on this planet?
September 30, 2010

english
how can i use appositives in a conservation with a friend
September 20, 2010

physics
A volleyball is deflected vertically by a player in a game housed in a high school gymnasium where the ceiling clearance is 18m. If the initial velocity of the ball is 21.5 m/s, will the ball contact the ceiling?
September 19, 2010

physics
A ball is kicked at a 37 degree angle, with a velocity of 14.6 m/s. How high and far does the ball go?
September 19, 2010

this website barley actually does any homework help
September 17, 2010

English
i need help What does It mean to be an american citizen ?
September 15, 2010

college economics
Assume Nebraska and Virginia each have 100 acres of farmland. The following table gives hypothetical figures for yield per acre in the two states: Nebraska Virginia Wheat 15 5 Cotton 7 4 Who has the comparative advantage in the production of wheat? *For this answer, I think it...
September 13, 2010

3 English H
How can I illustrate the word "aberration"?
August 31, 2010

algebra 1 honors
it says simplify each expression. justify each step. 1. (2 + 7m) + 5 2. 9 x (r x 21)
August 25, 2010

science
Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? o Answer the...
August 24, 2010

ALGEBRA
putting function machines in order. completely don't understand.
August 18, 2010

Math
Explain why the statement is incorrect: The probability that a bus will arrive late at the Civic Center is 0.35 and the probability that it will be on time ore early is 0.60
August 15, 2010

english
I am having a hard time coming up with several sentences about an interaction with a friend or family member about personal finance or credit cards that includes five different pronouns, adverbs, and adjectives. Can anyone help me?
August 1, 2010

That is correct! Great job!
August 1, 2010

geometry
If VZ = 21, ZX = 24, and Z is the midpoint of WY, what is the length of WZ rounded to the nearest tenth?
July 29, 2010

economics
What is meant by the term utility and how does it relate to purposeful behavior
July 27, 2010

geometry
Find the volume of a cylinder with radius 6 cm and height 10 cm. Use 3.14 for ð. Round your answer to the nearest tenth.
July 25, 2010

health
does champva provide adequate level of health insurance for participants
July 21, 2010

British Literature
14. Realism was largely a reaction against >> D) Romanticism 15. Realism is associated with >> D) all of the above Those are the ones I can do easily now. I've never read the stories in here, though I recently finished a big-ass British literature course :O
July 21, 2010

Physics
A .6-kg mass at the end of a spring vibrates 3.0 times per second with an amplitude of .13 m. Determine a.) the velocity when it passes the equilibrium point, b.) the velocity when it is .1 m from equilibrium. c.) the total energy of the system, and d.) the equation describing...
July 17, 2010

Math
1. Identify the degree, leading term and leading coefficient of each polynomial function. A. f(x)= x(x+1)(3x+1)(x-2) B. f(x)= -16+3x^4 - 9x^2 - x^6 + 4x^8 2. Describe the end behavior of a ninth-degree polynomial function with a negative leading coefficient.
July 15, 2010

math
6x-4y=8 have to find the slope for that equation, and the y-intercept, so I'll start with x=0
July 12, 2010

chemistry
when 25.0 g of Zn reacts how many L of H2 gas are formed at STP
July 5, 2010

chemistry
a sample of H2O with a mass of 46.0 grams has a temperature of -58.0 degress celcius. how many joules of energy are necessary to melt 46.0 grams of ice?
June 28, 2010

chemistry
what is the solubility of Ag in water at 0 degrees celcius? what is it for calcium carbonate? and yellow brass?
June 21, 2010

Chemistry
A0 2.95 cm3
June 2, 2010

US History
Where were some of the great achievements created by the enormous growth of American cities in the last decades of the 19th century?
May 31, 2010

Billing and Coding
How do you know what the main term is in a multiple-word diagnosis? Example: Acute Fulminating Multiple Sclerosis
May 27, 2010

English /Lit
Using literary elements,compare and contrast Abigail Adams letter to her daughter with Jean de Crevecoeur's essay from letter to an American farmer. Now i read both essays, and im very fond of both of them . but i have trouble on what to compare and contrast on them, and ...
May 24, 2010

Carol uses the same ratio table to solve the problems below. Do you agree or disagree? 8 cows/2 pigs = c cows/10 pigs 2 pigs/8 cows = 10 pigs/c cows
May 11, 2010

May 8, 2010

grammar
Can you plese tell if the follong questions are true or false (fragment) 1. That movie, one of my favorites, true or false? 2.-The local baseball team, needing a good picher true or false? 4.- Using a flashlight, he looked under the bed for his shoes true or false, thank you
May 8, 2010

college chemistry
A) In some regions of the southwest United States, the water is very hard. For example, in Las Cruces, New Mexico, the tap water contains about 560 ug of dissolved solids per milliliter. Reverse osmosis units are marketed in this area of soften water. A typical unit exerts a ...
April 28, 2010

college chemistry
A solid consists of mixture of NaNO3 and Mg(NO3)2. When 6.50 g of this solid is dissolved in 50.0 g of water, the freezing point is lowered by 5.40⁰C. What is the composition of the solid (in mass percent)? Assume ideal behavior but watch out for the van’t Hoff factor.
April 28, 2010

college chemistry
Pentane, C5H12, and hexane, C6H14, combine to form an ideal solution. At 25⁰C the vapor pressure of pentane is 511 torr and that of hexane is 150 torr. In the vapor over a pentane-hexane solution at 25⁰C, the mole fraction of pentane is 0.15. What is the mole ...
April 28, 2010

college chemistry
If gaseous H2 and O2 are carefully mixed and left alone, they can remain intact for millions of years. Is this “stability” a function of thermodynamics or of kinetics? Give a valid reason to support your choice.
April 28, 2010

college chemistry
a) Is the reaction shown below spontaneous under standard conditions at 25⁰C? CH3OH (g) ----> CO (g) + 2H2 (g) b) Will this reaction be spontaneous at 25⁰C given the following amounts of materials? CH3OH at 1.20 atm CO at 0.080 atm H2 at 0.020 atm
April 28, 2010

college chemistry
Sodium chloride is added to water (at 25⁰C) until it is saturated. Calculate the Cl- concentration in such a solution. Useful data are provided below. ∆G⁰f (kJ/mole): NaCl (s) -384 Na+ (aq) -262 Cl- (aq) -131
April 28, 2010

college chemistry
Carbon monoxide is toxic because it bonds much more strongly to the iron in hemoglobin (Hgb) than does O2. Consider the following reactions and approximate free energy changes: Hgb + O2 ---> HgbO2 ∆G⁰ = -70 kJ Hgb + CO ---> HgbCO ∆G⁰ = -80 kJ ...
April 28, 2010

college chemistry
A zinc-copper battery is constructed as follows: Zn | Zn+2(0.10 M) || Cu+2 (2.50 M)| Cu The mass of each electrode is 200.0 g. Each half cell contains 1.00 liter of solution. a) Calculate the cell potential when this battery is first connected. b) Calculate the cell potential ...
April 28, 2010

college chemistry
Cadmium sulfide (CdS) is used in some semiconductor applications. It is possible to evision the dissolving of this slightly soluble substance as an oxidation-reduction reaction. Calculate the value of the solubility (Ksp) for CdS given the following standard reduction ...
April 28, 2010

college
A standard voltaic cell is constructed so that the overall cell reaction is 2Al+3(aq) + 3M(s) --> 3M+2(aq) + 2Al(s) where M is an unknown metal. If ∆G⁰= -411 kJ for the overall cell reaction, identify the metal used to construct the standard cell.
April 28, 2010

spanish
what colors do you associate with the following words and phases? el invierno, el verano, la primavera, el ortorio, los peces tropicales, el perro Osito, Rosario
April 27, 2010

physics
A siren mounted on the roof of a firehouse emits sound at a frequency of 900 Hz. A steady wind is blowing with a speed of 15 m/s. Take the speed of sound in calm air to be 343 m/s. (c) Firefighters are approaching the siren from various directions at 15.0 m/s. What frequency ...
April 19, 2010

(5c-9)(5c+1)
April 17, 2010

Organic Chemistry
A student tried to dissolve 5.0 grams of impure acetanilide in 50 Ml of hot water. However was not able to get it to dissolve. Why not? What would you do to get it to dissolve??
April 14, 2010

chemistry
THANKS MATT! I'm in your class too! haha, this totally helped. haha
April 6, 2010

Math/Algebra
AlgebRA / MATH
March 30, 2010

Calculus
Find the derivative of y=cos(squarerootsin(tzn(pi*x)))
March 28, 2010

Physical Science
Consider the current-carrying wires in the figure. Both cases consist of long straight wires carrying a current I. In both cases, the wire is also bent in the shape of a circular loop of radius R. The only difference is in how the bending of the wire is done to create the ...
March 19, 2010

literature
during what part of bernice bobs her hair does bernice cut Marjories braids
March 17, 2010

math
give the prime factorization of 189
March 14, 2010

Physical Science
The frequency of circular motion for a charged particle moving around in the presence of a uniform magnetic field does not depend on ... a)The radius of the circle b)The mass of the particle c)The charge of the particle d)The magnitude of the magnetic field e)Actually, it ...
March 13, 2010

HISTORY
WHAT ARE GOOD REULTS OF WW1?
March 13, 2010

Physical Science
Two parallel transmission wires are laid between electrical towers. The distance between towers is 200 m, while the separation between the parallel wires is only 2.5 m. If the wires carry each a current of 1000 A, the magnitude of the force between the wires is closest to ... ...
March 10, 2010

Physical Science
A 9-Volt battery is used to charge a 280 mF capacitor over a 81 Ohms resistance. How long will it take for the capacitor to reach 75% of its maximum charge? What formula is relevant?
March 10, 2010

Writing
March 7, 2010

social studies
i would use my textbook if i had one!
March 7, 2010

social studies
March 7, 2010

social studies
what made the mongols powerful conquerors?
March 7, 2010

algerbra
n = 14
March 2, 2010

Thesis statement
How do you start a thesis statement that discusses the use of metaphors, simile, imagery and symbolism in a text?
March 2, 2010

English
February 28, 2010

English
could change the second and to where.
February 28, 2010

English
The burglas climbed hastily out of the window, terrified that he'd be caught. He didn't notice the water-butt and eventually got stuck in it and he was caught by the passing policeman.
February 28, 2010

Can you please prrof reread this paper for me? As you seen before I had to write about different ethnic groups and discrimination. Please let me know what you think. Thanks! Jews in America Jews in the United States have faced prejudice, segregation, and racism. From the time ...
February 28, 2010

Basic Literary Elements Chart Characters Setting Conflict Theme Protagonists: Time: Who is involved: Antagonist: Place: Type of conflict:
February 28, 2010

Ethics
I have a paper started for my ethics class, but I am not sure if it fits the "criteria" or not. I am supposed to write about an ethic group to which I belong. I decided to do White women. But then I am supposed to have how the group colonized or immigrated to the US...
February 28, 2010

ETH 125
I need to write an essay answering questions. I am having trouble finding any websites on the group that I have chose. Can anyone help me find a site or a couple to answer these following questions? Did the group face prejudice, segregation, racism or any combo of the three? ...
February 26, 2010

Trigonometry
Each base angle of an isosceles triangle measures 42°. The base is 14.6 feet long. A) Find the length of a leg of the triangle. Round to the nearest tenth of a foot.  B) Find the altitude of the triangle. Round to the nearest tenth of a foot.
February 26, 2010

Math
A blueprint for a house shows a bedroom being 5.5 inches wide. The scale used to create the blueprint is 0.50 in. = 1 ft. What is the actual width of the bedroom?
February 25, 2010

Science
I am having trouble finding anything to answer this question. Any help I would appreciate it! Describe Darwin's Theory of Natural Selection and indicate why species are able to adapt to changes in their enviroment. Be sure to include a discussion of how "survival of ...
February 24, 2010

college algebra
By setting up and solving a proportion involving x, find the value of x for the car that you have chosen. State the type of car, the mileage, and show both the set up of the proportion and the steps to solve. Include units with your answer. How would I do this problem? What ...
February 23, 2010

Government
The US has money is all i could come up with. But that isn't true since we are about 3+ Trillion dollars in deficit due to wars and many other things.
February 21, 2010

Government
Weigh the advantages and disadvantages of the current democratic system. In the chapter on the presidency, for example, you must determine the most and least important presidential power. I have some ideas like the pros are the checks and balances system that keep things equal...
February 21, 2010

Science
I just want to see what you all think. I had to write a paper on Malathion and the West Nile Virus. I also had to go by the following topics. Please let me know what you think of the paper. Thanks! Hazard Identification: A lot of people including but not limited to those that ...
February 21, 2010

Environmental Science
Does anyone know where I can find information on camparing the use of Malathion to the risk of contracting the West Nile Virus? I have to explain my vote and consider any relevant political, social and economical aspects. Just having trouble finding information, and following ...
February 20, 2010

ethinic
Thanks!
February 19, 2010

ethinic
I don't think this is totally a homework question, but maybe someone can help. I have to do a PowerPoint presentation soon and have to add speaker notes. Well I have PowerPoint 97....How can I add the speaker notes in that? I know how in 07 but I guess that don't help ...
February 19, 2010

ethics
What could you do to eliminate racial prejudice and stereotypes and reduce their damage? How does this sound for this question? About the only way I can think of helping stop some of the racism and stereotyping is to educate people mainly our children about other cultures and ...
February 18, 2010

Algebra
I am having such a hard time in this class. Hopefully someone here can help me to understand some of what they are trying to teach me. I have a problem here and have been working on it for about an hour now and I can not figure it out. I need to come up with an answer but I ...
February 15, 2010

internet
Your Microsoft/Powerpoint is a program that you can buy. If you are enrolled in a college, usually you can get it for a discount. This will be a program that is downloaded onto your computer. I hope this helps.
February 14, 2010

ethics
Just have a question if to if anyone can show me how to set up a APA citation reference and a in-text citation...... Also how to set up APA format..I read the directions and still get it wrong, so if anyone knows how to simplify it for me I would appreciate it!!!
February 13, 2010

math
Shouldnt this be rounded up to 111? Since the exact answer is 110.156 and you cant play 110.156 tournament, you would have to play either 110 or 111 tournaments. If you only played 110 you would not have exactly 1,000,000....
February 10, 2010

Math
How can we solve this using a Venn diagaram? 12 out of 1000 women at age forty who participate in routine screening have breast cancer. 880 out of 1000 women with breast cancer will get positive mammographies. 90 out of 1000 women without breast cancer will also get positive ...
February 8, 2010

Math - Venn Diagrams
How can we solve this using a Venn diagaram? 12 out of 1000 women at age forty who participate in routine screening have breast cancer. 880 out of 1000 women with breast cancer will get positive mammographies. 90 out of 1000 women without breast cancer will also get positive ...
February 8, 2010

statistics
At Guadalajara Airport, passengers must claim their luggage and then proceed to Customs. In the Customs area, each passenger will press a button that activates a modified stoplight. This light has only red and green bulbs. If the green light shows, the passenger is free to go...
January 25, 2010

College chemistry
a) is around 2.0 b) is zero, all the substance has vaporized at 25 degress there for none of it will be left as a liquid
January 23, 2010

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