Friday
October 24, 2014

Posts by John


Total # Posts: 6,306

Physics
A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? rad/s^2 b) How many revolutions does it make in 15 s if it starts at rest?
November 28, 2011

Physics
Smith
November 28, 2011

business
Does anyone know of any specific business turnaround strategies that have failed in the past? What happened with GM? Did they try to do a turnaround? What was their strategy and why did it fail?
November 26, 2011

business
Does anyone know of any specific business turnaround strategies that have failed in the past? What happened with GM? Did they try to do a turnaround? What was their strategy and why did it fail?
November 26, 2011

medical billing
The Local School District Has Asked Your Clinic To Submit a Proposal To Do Pre Employment Physicals FOr 60 Bus Drivers What Financial Or Accounting inFOrmation Do You Need To Submit The Proposal
November 26, 2011

Algebra
Use this proportionality: A correlation V square 2/3 How much more material is needed to manufacture an industrial plastic container with twice the volume of a similar container? A manufacturer of plastic containers prices its product by the amount of plastic used to make the ...
November 26, 2011

Chemistry
You have 1L of an ideal gas at 0 degree celsius and 10 atm pressure. You allow the gas to expand against a constant external pressure of 1 atm, while the temperature remains constant. Assuming, 101.3 J/liter-atm, find q,w,delta E, and delta H in Joules, A) if the expansion ...
November 25, 2011

math
line
November 25, 2011

math
a) use law of cosines b) use hero's formula
November 25, 2011

Physics
[Young & Freedman, 3-12] A military airplane on a routine training mission is flying horizontally (in the positive x-direction) at a speed of 120. m/s and accidently drops a bomb (fortunately not armed) at an elevation of 2090 m. Air resistance may be ignored and answer with ...
November 23, 2011

english
can you give me a good common sentence that has these words:to,two,and too
November 22, 2011

computers
In which type of network configuration is each device connected to exactly two other devices? (Points: 5) Bus Mesh Ring Star im confused between B and C plz help
November 22, 2011

computers
What type of network is a collection of devices that equally share the processing and storage without having a centralized server? (Points: 5) Client/server File server Peer-to-peer Web-based is it C
November 22, 2011

computers
Which type of data communication system is composed of a group of devices in close proximity? (Points: 5) CAN LAN MAN WAN Is it LAN
November 22, 2011

ETH501
1) What I would like for you to do is to choose three (3) "virtues" and then provide a clear definition of each. For example, you might choose such virtues as temperance, justice, honesty, fairness, generosity, or kindness. Be sure that you define each virtue using a...
November 22, 2011

Math
How to graph: x(x+3)^2 I understand its a cubic function. Anyone care to help me with solving and graphing it? thanks.
November 21, 2011

Chemistry
How many more grams of Li SO4 can you dissolve in 250g of water at 10.0 degrees C than at 50 degrees C. The solubility is 35.0 at 10 degrees and at 50 degrees C it is at 32.5. Thanks DR Bob for all your help.
November 21, 2011

Math (URGENT)
I understand why the vertex is there, I just don't understand what you mean by completing the square.
November 21, 2011

Math (URGENT)
How to graph this: Step 0: y=x(x-4) Step 1: y=x^2-4x What's next? Calculator shows vertex at (2,-4) I asked before, but I'm still stuck. Please help. thanks.
November 21, 2011

chemistry
Dr Bob, could you please tell me if this is right. Thanks again. Molar Mass of Na = 22.990 Cl = 35.453 NaCl = 58.453 g/mol Change g to moles……. moles= grams/molar mass = (25g) / 58.453 g/mol = 0.427moles Then M = moles/L = .427 moles/ 0.0105 = 406.66
November 21, 2011

chemistry
An aqueous solution is 25 % mass % NaCI. The density of the solution is 1.05g/ml. What is the molarity of the solution?
November 21, 2011

chemistry
How would you prepare 1.00 L of an alchol water solution that is 5.00 vol % alchol.
November 21, 2011

chemistry
How many more grams of Li SO4 can you dissolve in 250g of water at 10.0 degrees C than at 50 degrees C.
November 21, 2011

Math (URGENT)
How to graph: y=x(x-4) Calculator shows the vertex at (2,-4) Can someone explain why? Thanks.
November 21, 2011

Math
Simplify: y=x(x-4) little help please. thanks.
November 21, 2011

chemistry
Exactly define the number of hydrogen and hydroxide ions at pH 6. What about pH 8?
November 20, 2011

chemistry
4284.416. but what unit would it be in?
November 20, 2011

chemistry
If a gram of water at sea level is heated from 37 degrees Celsius to 101 degrees. How much heat would be absorbed by the water?
November 20, 2011

Math
I have 6 pairs of socks lying unmatched in my dresser drawer. Each pair is a different color(brown, black, red, yellow, green, and purple). When I wake up in the morning, I randomly grab 2 of the loose socks and put them on without looking. If 2 socks are randomly selected ...
November 18, 2011

Physical Chemistry
Derive an expression for number of electrons N(E) with energy that can escape from a metal in terms of Z(E) (density of state) and F(E) (Fermi-dirac function) and ф (work function).
November 18, 2011

Science
Which of the following is visible to a person only because light from another source reflects off it? - lightning - flashlight - cloud - sun
November 16, 2011

Calculus
(a) Find the Riemann sum for f(x) = 7 sin x, 0 ≤ x ≤ 3π/2, with six terms, taking the sample points to be right endpoints. (Round your answers to six decimal places.) I got 3.887250 as an answer, but that's not right. (b) Repeat part (a) with midpoints as ...
November 16, 2011

Math
Record 7 digits (0-9) in ascending order that have a mean of 3 and a median of 1. Explain how to come up with the answer as well please and thank you.
November 16, 2011

Math
Record 7 digits (0-9) in ascending order that have an inter-quartile range of 4.
November 16, 2011

physics
A large, solid metal sphere is suspended from a the ceiling by a cable, and is free to rotate about the wire. If the mass of the sphere is 176 kg, its radius is 0.7 m, and it is initially rotating at 28 rpm (revolutions per minute), what work is required to increase its ...
November 15, 2011

History
Please Help. How did the Islamic Slave Trade change the existing system?
November 14, 2011

History
Please Help. What was one of the powerful movements that transformed European society during the early modern era? Between the 16th and 17th centuries.
November 14, 2011

History
Please Help. I would like to ask if it would have been possible with out the prior development of the Enlightenment? For instance, if some of the main issues that troubled Martin Luther (such as the Catholic Church's practice of requiring "tributes" for pray and/...
November 14, 2011

History
Please help. What was one of the powerful movements that transformed European society during the early modern era?
November 14, 2011

Calculus
A stone is dropped from the upper observation deck of a tower, 200 m above the ground. (Assume g = 9.8 m/s^2.) a)Find the distance (in meters) of the stone above ground level at time t. b)With what velocity does it strike the ground? (Round your answer to one decimal place.) c...
November 13, 2011

US history HELP
From late 1941 into early 1942, World War II in the Pacific experienced a succession of Japanese victories that saw numerous Allied outposts fall.
November 13, 2011

Health
Does Sickle Cell Disease involve a single gene or entire chromosome?
November 13, 2011

economics
since the AC curve in the problem is upward-sloping everywhere, it is not possible to construct a zero-profit equilibrium given the assumptions of the problem (this outcome requires a U-shaped AC curve). this problem will consider an alternative example where a long-run ...
November 13, 2011

economics
Q AC MC 1 4 12 2 8 20 3 12 28 4 16 36 5 20 44 6 24 52 7 28 60 8 32 68 9 36 76 suppose that there are 70 firms in operating in the industry. using the MC curve, find out how much output in total is delivered to the market at each price (you only need to consider prices equal to...
November 13, 2011

spanish
Could anyone please tell me why these sentences are grammatically incorrect please 1. Queremos nuestros hijos tienen maestros buenos y competentes. 2. Esto requiere el gobierno a gastar más dinero. 3. El que me preocupa es que no tenemos suficiente dinero. 4. Es ...
November 12, 2011

computer
How does a computer generated animation work? (Points: 5) The computer creates constant movement in the characters. The computer, along with human workers, moves the characters on the screen. The computer creates a set of continuous movements, one character at a time. The ...
November 11, 2011

computer
What graphics program would you use to create a vector-based graphic that is easily resizable? (Points: 5) CAD Draw Paint Photo-editing im confused between A and C
November 11, 2011

Computer
If you want to create images that can be easily resized, or one that looks like it was created with a pencil or pen, you should choose a __________ graphics package. (Points: 5) bitmap-based colorized raster-based vector-based Is it D
November 11, 2011

computer
plz help
November 11, 2011

computer
Which type of graphics file format keeps track of each individual point in the image? (Points: 5) Bitmap Detailed image Pointilated Vector is it "Vector"
November 11, 2011

Social Studies
Eli Whitney revolutionized industry in the north and south and impacted the Civil War. What 2 key innovations is he attributed with?
November 10, 2011

omputer
THank you so much
November 9, 2011

omputer
The process called __________ marks a particular part of the document for special processing. (Points: 5) blocking editing identifying selecting is it D? im confused betweem B n D
November 9, 2011

computer
A collection of integrated software is called a software: (Points: 5) congregation. family. office. suite. im confused about this one i think its D
November 9, 2011

computer
What type of software is provided with the expectation that the users will change it to meet their particular needs? (Points: 5) Commercial Software Open Source Software Public Domain Software Shareware is it "Open source software" im confused
November 9, 2011

computer
2. _____is applications software designed to help users be more efficient. (Points: 5) a.Assistance software b.Efficiency software c.Productivity software d.Software suites is it D
November 9, 2011

calculus
Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount left in the body, with constant of proportionality . Suppose that the half-life of hydrocodone bitartrate in...
November 9, 2011

math PLEASE HURRY
72magnets
November 8, 2011

chem
51.33 mL
November 8, 2011

physics
Two cars leave the same point at the same time, each travelling at the same constant speed and each having the same mass. The first car drives directly east, while the second car heads directly north. If the centre of mass of the two-car system is travelling at 51 km/h (i.e. ...
November 8, 2011

Calculus
Find the rectangle of largest area that can be inscribed in a semicircle of radius R, assuming that one side of the rectangle lies on the diameter of the semicircle. NOTE: Let L denote the length of the side that lies on the diameter and H denote the height of the rectangle. ...
November 7, 2011

Math
Suppose 8 out of every 20 students are absent from school less than five days a year. Predict how many students would be absent from school less than five days a year out of 40,000 students.
November 7, 2011

computer
Which of the following operating system types is used in PDAs? (Points: 5) a.Multi-user/multi-tasking b.Real-time c.Single-user/multi-tasking d.Single-user/single-tasking is it B
November 7, 2011

computers
plz help
November 7, 2011

computers
Which of the following operating system types is used in medical equipment or a cash register? (Points: 5) a. multi-user/multi-tasking b. real time c. single-user/multi tasking d. single user/single tasking is it A
November 7, 2011

social studies.
15 is C 16 is D I am pretty sure that these are your answers.
November 7, 2011

physics help please
What are the small-amplitude period and frequency of a 10.0 m long pendulum?
November 7, 2011

math
So: 47 137 227 317 Do I need to add +360n?
November 6, 2011

math
tan(2theta-34degrees)=squareroot3, theta range{real numbers of degrees}
November 6, 2011

math
So: 47 137 227 317 Do I need to add +360n?
November 6, 2011

math
sgr2 sinD cosD=sinD
November 6, 2011

math
The points (−12, 20), (0, 5), (42, −3) lie on the graph of f. List three points on the graph of g(x) = 10 − 2f(−3x).
November 5, 2011

Physics
At a particular instant, a stationary observer on the ground sees a package falling from a moving airplane with a speed vobserver at an angle θ to the vertical. To the pilot flying horizontally at a constant speed relative to the ground the package appears to be falling ...
November 5, 2011

Physics
A boat heads directly across a river with a velocity of 12 m/s. If the river flows at 6.0 m/s find the magnitude and direction (with respect to the shore) of the boat's resultant velocity.
November 5, 2011

maths
add all the numbers and divide the answer by 11
November 5, 2011

Algebra 2
The perimeter of a rectangle is 122m. The length of the rectangle is 11m less than 5 times the width. Find the dimensions of the rectangle.
November 5, 2011

Europe in the 19th century
huh? What sites?
November 4, 2011

Europe in the 19th century
I have to write a paper on the changes of labor relations in the quarter century before WWI. So far I can only think the journeymen and master craftsmen, and how the journeymen doesn't have to depend on the master anymore. What other changes in the labor relations are there?
November 4, 2011

marketing
How do consumption habits for products such as Scotch whisky vary from country to country? Why are some spirits products and brands strictly local, while some have global potential?
November 4, 2011

math
3/9 divided by 7/8
November 4, 2011

math
If there are exactly 5 times as many children as adults at a show, which of the following cannot be the number of people at the show?
November 4, 2011

math
In a class of 29 children, each of 20 children has a dog and each of 15 has a cat. How many of the children have both a dog an a cat using Vinn Diagrams
November 4, 2011

calculus
Find the inflection points of f''(x)= x(x+1)(x-2)^2. Explain
November 3, 2011

science
Hi
November 3, 2011

calculus
Lim (1+(a/x))^(bx) x->infinity I'm having a lot of trouble with this limit.
November 3, 2011

Chemistry
I understand that it is 30C, but what equation would one use for this?
November 2, 2011

Chemistry
10 mL of 60oC water is mixed with 10 mL of 0oC water in a perfect calorimeter. What is the final temperature?
November 2, 2011

Translation
I am in a translation class and the sentence contains this phrase can you tell me what it means The city was brutal in its reaction wiping 50 3/4p off the share price what does 50 3/4p stand for
November 2, 2011

physics
You jog at 6.2 mi/h for 5.0 mi, then you jump into a car and drive for another 5.0 mi. With what average speed must you drive if your average speed for the entire 10.0 miles is to be 10.6 mi/h? I don't get why the answer isn't 15.
November 1, 2011

chemistry
Using a coffee-cup calorimeter, it is found that when an ice cube with a mass of 24.6 g melts, 8.19 kJ of heat are absorbed. (a) Calculate the change in enthalpy per gram and per mole of water. (b) Write the thermochemical equation for this physical change. (c) What mass of ...
November 1, 2011

chemistry
When 1.50 g of calcium chloride is dissolved in 150.0 g of water, the temperature of the water rises from 20.50°C to 22.25°C. Assume that all the heat is absorbed by the solution. (a) Calculate the heat of solution per gram and per mole of CaCl2 that dissolves. (b) Is ...
November 1, 2011

math
From 1950 to 1970,some glaciers in Alaska thinned by an average of 1.7 ft per year.What was the change in glacier thickness during this period?
October 31, 2011

History
Please Help? What impact did Niccolo Machiavelli have on events during his days?
October 31, 2011

History
Please help How does Niccolo Machiavelli fit the Renaissance mold?
October 31, 2011

chemistry
Cl- => Atomic number 17 - 10 (Core electrons from [Ne] = 7 K+ => Atomic Number 19 - 18 (Core electrons fom [Ar] = 1
October 31, 2011

Logic
Im guessing its No he doesnt teach 8th grade because he doesnt carpool with Chris...but this is a little tricky to me
October 30, 2011

Logic
Gene will teach 7th grade of Gene will teach 8th grade. If Gene teaches 7th grade, he will be assigned to the Sunset Road School. Gene will carpool with Chris if he is assigned to the Sunset Road School. If Gene teaches *th grade he will have his daughter Briana in his class. ...
October 30, 2011

physics
Hello, I'm trying to figure out which of the following statements are TRUE. I suspect that 2, 6, 8 are true...and that there is one more that is true, but not sure which one? Thanks! It is impossible to have a collision between two objects in which the center-of-mass of ...
October 29, 2011

math
if I leave home to go to the beach and at 7:05 am I am 1/3 of the way there. At 7:25am I am 3/4 of the way there. What time will I arrive at the beach.
October 27, 2011

Chem 101
Using the "Unit conversion method", derive an equation to calculate the heat required to raise the calorimeter to the maximum temperature.
October 26, 2011

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