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August 21, 2014

Posts by sarah


Total # Posts: 3,838

Trig
171505.3
April 28, 2011

physics
a wheel turning with angular speed of 30 rps is brought to rest with constant acceleration. It turns 60 revolutions before it stops.
April 28, 2011

science
Hachure lines, or lines with teeth, describe _____. a) volcanos b) mountains c) depressions d) discontinuities
April 27, 2011

trig
What is the shortest possible length of a triangle side facing an angle of 20 degrees, if one of the other sides is 5? (answer should be a decimal number, correct within 0.001)
April 25, 2011

math
acrimewave
April 25, 2011

math
4(x) + pi(x)=60 how do i solve this?
April 25, 2011

math
A florist uses wire frames to support flower arrangements displayed at weddings. Each frame is constructed from a wire length 9ft long that is cut into six pieces. the vertical edges of the frame consist of four of the pieces of wire that are each 12 inches long. one of the ...
April 25, 2011

precalculus
What is the component form of vector v given a magnitude of 9 and an angle of theta= 90 degrees with positive x axis. sorry I'm writing this on my phone and I don't have the symbols for vector, theta, or degree.
April 21, 2011

Economics
In long-run equilibrium there will be no economic profit in a purely competitive static economy because: A) barriers to entry will prevent profit from arising B) there will be no uncertainty, no innovations, and no monopoly C) there will be no need for professional managers ...
April 21, 2011

HCS/490
okay thank you for clearing that up!!!! :)
April 20, 2011

HCS/490
so its not right for them to screen because even if you smoke, have a disease or are overweight then you can still do the job they should not base your preformance on you health conditions unless they get in the way of the job?
April 20, 2011

HCS/490
Do employers have the right to screen employees or potential employees to learn if they are smokers, have chronic disease, or are overweight? Why?
April 20, 2011

Math
The perimeter of rectangle P is 12 feet. The perimeter of rectangle Q is 18 feet. Both rectangles have the same area.Find the area and dimensoin of each rectangle.
April 20, 2011

American lIt project
Thanks:) I am looking. Are there any songs that actually have lyrics about times in the 50s?
April 19, 2011

American lIt project
Do you guys know of any songs or poems that have to do with America in the 1950s? Thanks
April 19, 2011

Business Law
Benner imports Inc, an automobile dealership, placed an advertisemet in the chicago sun times to sell a station wagon. The advertisement displayed a price that was $700 lower than the dealership had indicated in the advertising copy sent to the newspaper.  A customer ...
April 17, 2011

American Lit project help (Literature needed)
Thanks, but Im still not finding ones that I can read online. They all are just the cover or you have to buy them. Any other suggestions? Do you think there would be more inserts about food in the homes and gardens?
April 16, 2011

American Lit project help (Literature needed)
So for my amer lit class I am doing a project on American foods in the 1950s and I need a piece of literature to write my essay on. It has to be a short peice not a novel. I really wanted for my literature to be a magazine from the 1950s. Like better homes and garden cooking ...
April 16, 2011

biology
Photosynthetic electron transport, like cellular respiration electron transport, is a series of redox reactions. True False I think it is true.
April 15, 2011

More Solutions Chem
You have 315.00g of sodium hydroxide. How many liters of dangerous 12.0M sulfuric acid (H2SO4) can you neutralize with your supply? __NaOH(s) +__ H2SO4(aq) -> __Na2SO4 + __H2O(l) I know the answer is .43, but I don't know how to get there. Thanks!
April 15, 2011

Solutions Chem
7) You have a 2.5M solution of Silver Nitrate. It contains 450mL of solution. How many grams of silver would you be able to extract? Cu (s) + 2AgNO3 (aq) -> 2Ag (s) + Cu (NO3)2 (aq) I've gotten this much: M=mol/L 2.5=mol/.45 mol= 2.5*.45 mol=1.125 Silver Nitrate= (Ag=...
April 15, 2011

Math
My couch potato friend enjoys sitting in front of the TV and grabbing handfuls of 4 chocolates at random from his snack jar. Unbeknownst to him, I have replaced one of the 26 chocolates in his jar with a cashew. (He hates cashews with a passion.) How many possible outcomes ...
April 14, 2011

allied health part 2-21
which of the following statements about risk management is true? a. risk management is unique to the health care industry b. risk management is controlled and managed by hipaa regulations. c. risk management is concerned with reducing exposure to legal liability d. risk ...
April 13, 2011

allied health part2-19
of the following types of information, which one has the strictest rules regarding the release of informationg? a. substance abuse information b. mental illness information c. genetic information d. adoption information
April 13, 2011

allied health part 2-17
if an institutional review board is involved in a request for information, the information is likely sought by a a. health care facility b. researcher c. court d. substance abuse center
April 13, 2011

allied health part 2
which one of the following activities is considered part of health care operations? a. reviewing the competency of health care workers b. administering a stress test c.giving a patient her prescribed medication d.recording a patient's blodd pressure and temperature
April 13, 2011

DrBob222
You just answered my previous half-life question, and I was curious how to find the value of k. You said that k = 0.693/t1/2 , but how do you evaluate t sub1/2?
April 12, 2011

Half-Lifes
Great! But, so that I can understand it in the future, can you tell me what the value of k is a little more clearly? how do you do a subscript of 1/2?
April 12, 2011

Half-Lifes
How much of a 6gram sample of silver-105m would remain after 4 minutes? Half life=7.2 minutes
April 12, 2011

Chemistry
A 0.225g sample of a weak monoprotic acid requires 37.50 mL of 0.100 M NaOH solution to reach the equivalence point. What is the molar mass of the acid?
April 11, 2011

CHEMISTRY
HOW YOU PREPARE 30.0ML OF 0.800M HNO3 FROM A STOCK SOLUTION OF 4.OOM HNO3? WHAT SOLUTION IN ML OF THE 4.OOM HNO3 SOLUTION WILL YOU NEED?
April 10, 2011

Chemistry
Which of the following combinations will make a good buffer solution? 0.05 M H2CO3 + 0.05 M KHCO3 0.5 M HI + 0.5 M CsI 0.3 M NH4Cl 0.3 M NH4Cl + 0.1 M NH3 0.3 M NH4Cl + 0.1 M HCl thanks
April 10, 2011

physics
On a catapult, what determines how far a missile moves?
April 10, 2011

5th grade Math
Explain how you can find the product of 5 and 3/4.
April 7, 2011

algebra
Or rather, what would I do to find all the zeros for this equation?
April 7, 2011

algebra
p(x)=x^3+2x^2-3x+20 one of this functions zeros is -4 When using synthetic division to find all the zeros of a polynomial function, would you plug in 4 or -4 into the actual equation?
April 7, 2011

math
It's all a matter of knowing the basic distance and midpoint formulas. The distance between two points with coordinates (x1,y1) and (x2,y2) is given by d=the square root of (x2-x1)^2 + (y2-y1)^2 If a line segment has endpoints at (x1,y1) and (x2,y2) the the midpoint of ...
April 7, 2011

Math
14. Parks A survey of 300 parks showed the following. 15 had only camping. 20 had only hiking trails. 35 had only picnicking. 185 had camping. 140 had camping and hiking trails. 125 had camping and picnicking. 210 had hiking trails. Find the number of parks that a) had at ...
April 6, 2011

biology
thank you
April 6, 2011

biology
Explain how alignment of chromosomes on the meta phase plate differs in mitosis, meiosis I, and meiosis II. Why are these arrangements important? Can you tell me where zi can find this information? I don't see it in my text. Thank you
April 6, 2011

algebra
The question is: find f(x+h) for each and the function given is f(x)=x^3+x after you turn it into f(x+h)=(x+h)^3+(x+h) how do you multiply out the cube?
April 6, 2011

Chemistry
In this equilibrium H2(g) + I2(g) <-> 2 HI(g). What is happening on the molecular level? Like given the right energy when a H2 molecule hits a I2, is electron transfered and they just stick together? Or do they have to be in the right position? Who transfers (or is it ...
April 5, 2011

chemistry
Assuming a temperature of 37 C and 1 atm pressure, how many mol/min of CO2 is this?
April 4, 2011

chemistry
what mass of (NH4)SO4 is required to prepare 500 cm3 of M/4 solution?
April 4, 2011

chem
where does the 4.70 come from?
April 4, 2011

Titrations (chem)
In the titration of a 0.101 M sodium hydroxide solution, 19.02 mL of 0.130 M sulfuric acid solution was required to neutralize the sodium hydroxide in reactions that replace both hydrogen ions of the sulfuric acid. Calculate the number of milliliters of sodium hydroxide ...
April 3, 2011

science
which is the correct balanced equation for a given titration process, (a) or (b)? a) 6H+ + 2MnO4- + 3H2O2 -> 4O2 + 2Mn2+ + 6H2O b) 6H+ + 2MnO4- + 5H2O2 -> 5O2 + 2Mn2+ + 8H2O Process: Make a solution in a 100mL volumetric flask using 1g of NaBO3*4H2O, 20mL of 1M H2SO4, ...
March 30, 2011

chem
thank you so much. you're my hero =)
March 30, 2011

chem
which is the correct balanced equation for a given titration process, (a) or (b)? a) 6H+ + 2MnO4- + 3H2O2 -> 4O2 + 2Mn2+ + 6H2O b) 6H+ + 2MnO4- + 5H2O2 -> 5O2 + 2Mn2+ + 8H2O Process: Make a solution in a 100mL volumetric flask using 1g of NaBO3*4H2O, 20mL of 1m H2SO4, ...
March 30, 2011

chemistry
How would you make 250 ml of a .51M calcium hydroxide solution?
March 30, 2011

Math
I need this too
March 30, 2011

Chemistry
If you have constant volume of gas how can you determine the number of moles it has? what equation do you use if your not given the constant volume value?
March 29, 2011

physics
A volume Vi = 23.1 L of air at temperature T = 21 ¢XC is compressed at constant temperature to a volume Vf = 7.7 L. The relative humidity of the air before compression is R = 56.4 %. Saturated water vapour in air at this temperature has a vapour pressure vp = 2.5 kPa and ...
March 29, 2011

chemistry
Consider the titration of 88.0 mL of 0.150 M Ba(OH)2 by 0.600 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. 0.0 ml 12 ml 31 ml 44 ml 88 ml
March 28, 2011

physics help
At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your ...
March 27, 2011

French
omg i know. i have an A- in my french class. i dont study. now i have a final and i really have to study. i cant find a practice tet anywhere. it annoys me sooooooo much. im getting a tutor next year.
March 27, 2011

physics
At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your ...
March 27, 2011

algebra
help solving the equation .8x+2 less than or equal 62-1
March 25, 2011

physical science
in a balanced chemical equation the mass of the reactants is equal to the? a. atoms in a molecule b. atomic mass of the elements c. volume of the reactants d. mass of the products
March 25, 2011

statistics
A business uses a 7-point scale about satisfaction with the services it provides to clients. The ratings are normally distributed with a mean of 4.8 and a standard deviation of .5. What percentage of clients rate their satisfaction 1) Above 5? 2) Above 6? 3) Above 4? 4) Below ...
March 24, 2011

Dynamics
During a high-speed chase, a 2400-lb sports car traveling at a speed of 100 mi/h just loses contact with the road as it reaches the crest A of a hill. a) Determine the radius of curvature r of the vertical profile of the road at A. b) Using the value of r found in a part a), ...
March 24, 2011

English
thank you
March 23, 2011

English
o i read it wrong. so it would be your
March 23, 2011

English
i have found your coat. would you say we appreciate you not having smoked near the entrance?
March 23, 2011

English
smoking
March 23, 2011

English
It has something to do with gerunds. but im sure how it fits. you normally change the subject by adding an 's.
March 23, 2011

English
Identify any improper verbal usage in each sentence. Each sentence has an error. Write the correct form of the verb. We appreciate you not smoking near the building entrance.
March 23, 2011

math
2sin^2x+3sinx+1
March 22, 2011

science-chem- theory questions
you're so wonderful! you're right, i'll use the equations from now on. thank you for enlightening me!
March 22, 2011

science-chem- theory questions
please, help me.. i think i know the answers, but i just want to make sure! i'd love your feed back :) 1) an air bubble is trapped in the tip of a buret before a titration. during the titration, the bubble is passed from the buret tip. will the reported volume of titrant ...
March 22, 2011

Algebra I
A sample of radioactive material weighing 45 grams has a decay rate of 4.25% each day. The equation y = 45(2.7)–0.0425t can be used to find the amount of material that still remains, where t is the number of days that have passed. Approximately what is the amount of ...
March 22, 2011

Physics
Search: The figure shows three crates being pushed over a concrete floor by a horizontal force of F magnitude 440 N. The masses of the crates are m1 = 30.0 kg, m2 = 10.0 kg, and m3 = 20.0 kg. The coefficient of kinetic friction between the floor and each of the crates ...
March 20, 2011

Physics
thanks for the help but i have worked it out but for the forces on the links it is F=m(a+g)+ F(previous link)
March 19, 2011

Physics
In the figure, a chain consisting of five links, each of mass 0.100 kg, is lifted vertically with constant acceleration of magnitude a = 2.50 m/s2. Find the magnitudes of (a) the force on link 1 from link 2, (b) the force on link 2 from link 3, (c) the force on link 3 from ...
March 19, 2011

algebra 1
I don't understand how to divide monomials with negative (or positive, for that matter) powers. Please help!!!!
March 15, 2011

english
Both editors in chief asked for leave of absences at the same time. would the correct form be.... leaves?
March 14, 2011

science
When can an object be considered weightless but still have a gravitational force on it?
March 14, 2011

physics
when can an object have its original mass but zero weight?
March 14, 2011

english
a friend has a new baby and has invited you to her house . write a letter accepting the invitation . ask for two questions that you need before the vist .
March 14, 2011

algebra
You are standing 14 feet from the edge of a cylindrical water tank and 26 feet from a point of tangency. The tank is 10 feet tall. What is the volume of the tank in cubic feet?
March 13, 2011

physics
A car travels between the 100 meter and 250 meter highway markers in 10 second. The average speed of the car during this interval is...
March 13, 2011

college physics
A cue ball initially moving at 4.3m/s strikes a stationary eight ball of the same size and mass. After the collision, the cue ball’s final speed is 2.3 m/s at angle 1 with respect to it's original line of motion. The 8 ball moves with unknown speed at an angle 2 ...
March 10, 2011

Algebra
an investment of 72,000 was made by a business club. the investment was split into three parts and lasted for one year. the first part of the investment earned 8% interest. the second 6% and the third 9%. total interest from the investments was $5640. the interest from the ...
March 9, 2011

physics
It has been proposed to use large inductors as energy storage devices. How much electrical energy is converted to light and thermal energy by a light bulb with a power of 195 W in one day? If the amount of energy calculated in part (a) is stored in an inductor in which the ...
March 9, 2011

Food Analysis
1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0.80l by adding water, what is the molarity of the resulting diluted solution? 2.How many ml of water will be required to dilute 11ml of 0.45Macid solution to a molarity of 0.1M? 3.Calculate the weight CuSO4.5H2O ...
March 8, 2011

Calculus II
Consider the solid obtained by rotating the region bounded by the given curves about the y-axis. y = ln x, y = 4, y = 5, x = 0 Find the volume V of this solid. Help!!! Thank you in advance :(
March 8, 2011

Science
best way to stufy for science
March 7, 2011

algebra
How would one write the equation of a parabola whose directrix is y=-6 and location of the focus is (-3,2)
March 7, 2011

math
what is the deistance traveled on a fiel trip is it a centimeter or millimeter or kilometer.
March 7, 2011

english
haha thank you:)
March 6, 2011

english
So if you were to break this quote down how would you do it?
March 6, 2011

english
how would you say Clara Bow, felt about men? There's one quote where she says: The more I see of men, the more I like dogs.
March 6, 2011

statistics
refer to the schools data set in appendix m which refers to the 94 school districts in northwest Ohio. divide the school districts into two groups. include all schools with less than 2000 students in one group and the other being the ones with more than 2000. Compute the mean ...
March 6, 2011

English
ok
March 5, 2011

English
Ha ive tried asking, but thanks.
March 5, 2011

English
I'm finally starting to write my paper on Clara Bow, and my teacher wants us to write a five page defending who she was I guess. But my question is: what is there to defend??
March 5, 2011

Chemistry
What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.75? The Ksp of Fe(OH)3 is 6.3 × 10-38.
March 5, 2011

Chemistry
What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.75? The Ksp of Fe(OH)3 is 6.3 × 10-38.
March 5, 2011

math
A recipe that makes 18 cookies calls for 3/4 cup of sugar. How much sugar is needed to make 24 cookies using this recipe?
March 3, 2011

Chemistry
What is the molar mass of 4.56grams of Benzoic Acid?
March 2, 2011

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