Homework Help: Computers: Operating Systems

Recent Homework Questions About Operating Systems

Science
You are a retired law enforcement officer who now teaches at a local community college in the criminal justice program. In addition to teaching ethics, you write crime novels on the side. You recently heard of a real-life case that you thought would make the basis for a good ...
Monday, July 23, 2012 at 8:19pm

cild care
Which one of the following statements about childcare centers is correct? A. Childcare centers can't get a license unless they apply to enroll in a QRIS system. B. Childcare centers are automatically enrolled in a QRIS system when they apply to be licensed. C. Childcare ...
Monday, July 23, 2012 at 2:35pm

CJS/230
Will someone please help me find a webite to answer the following questions? What are community corrections? How do community corrections affect the society in which they are practiced? What hypothesis can you make about community corrections and their overall effectiveness ...
Monday, July 23, 2012 at 12:27pm

cis 324
Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She would like an automated system but has a very small budget
Monday, July 23, 2012 at 1:00am

Medical Billing Coding
Unless stated otherwise, assume “normal, healthy patient.” Anesthesia by: MDA and CRNA. Anesthesiologist was medically directing 4 concurrent cases. 14-2A OPERATIVE REPORT, ANESTHESIA INDICATIONS FOR SURGERY: This is a 28-year-old healthy male who has had some ...
Sunday, July 22, 2012 at 10:10pm

Medium Speed wet milling machine and the relations
So far, the world's medium-speed milling machines are dry law. Hot air carrier that is, separation, sorting products. Therefore in need of a massive and complicated: medium heat generator, fans, vents Central, separator , explosion-proof system (inert gas source), ...
Sunday, July 22, 2012 at 10:08pm

Cement quarry application
In general, Portland cement is the main production of cement industry. Portland cement is kind of meticulous powder, usually gray, which consists of calcium (from limestone), silicate, aluminate (clay) and ferrite. Limestone is the main raw material of cement production; most ...
Sunday, July 22, 2012 at 10:03pm

Analyze the Steel Type Coal Ball Grinding Mill Fau
1. The little pineapple snaggletooth In the daily use of Ball Mill, the little pineapple snaggletooth happens most often, the reasons are as follows: (1). The little pineapple design strength is weak, and the manufacturing quality requirements is relatively low. (2). The ...
Sunday, July 22, 2012 at 10:02pm

mathematics please help!
For what value of k does the system below not have a unique solution? -1x + 7y + 2z = 6 2x + 1y + kz = -11 3x - 6y - 2z = -25 A.5 B.0 C.-2 D.-8
Sunday, July 22, 2012 at 6:33pm

ALGEBRA 2
For what value of k does the system below not have a unique solution? -1x + 7y + 2z = 6 2x + 1y + kz = -11 3x - 6y - 2z = -25 A.5 B.0 C.-2 D.-8
Sunday, July 22, 2012 at 6:09pm

Computer science
As a member of the Information Security team at a small college, you have been made the project manager to install an access control system (ACS) in a dormitory. The ACS will automatically unlock the dormitory doors via an electronic proximity reader and integrate with an ...
Sunday, July 22, 2012 at 5:05pm

Math (Alg 2)
The following expression represents the value of which variable in the solution of the system of equations below? |2 -1 1| |1 2 6| |3 -1 2| ___________ |2 -1 -2| |1 2 3| |3 -1 -1| 2X-Y+Z=-2 X+2Y+6Z=3 3X-Y+2Z=-1 A. Z B. Y C. X D. NONE OF THE VARIABLES ARE REPRESENTED
Sunday, July 22, 2012 at 4:54pm

algebra
What is the value for the coefficient determinant (D) in the following system? 4x – 3y = 16 3x + 7y = –25 A. –37 B. –19 C. 37 D. 52
Sunday, July 22, 2012 at 4:11pm

physics
A 326 g object is attached to a spring and oscillates with a period of 0.25 s. The total energy in this system is 5.83 J. What is the amplitude of the motion?
Thursday, July 19, 2012 at 10:53pm

Chemistry
A buffer system contains 0.25M NH4+ and 0.19M NH3. pka of NH4 is 9.25. How many moles of NaOH must be added to 1.00L of this solution to increase the pH to 9.25?
Thursday, July 19, 2012 at 8:43pm

government
what are some drawbacks to the current buearucratic system?
Thursday, July 19, 2012 at 3:16pm

Health
Write a 200- to 300-word response to the following: What is long-term care? Provide an example. What is continuum of care services in the United States? Why is long-term care one of the greatest challenges facing the health care delivery system today?
Thursday, July 19, 2012 at 11:11am

Chemistry
I had an equilibrium laboratory and had to answer a few questions after the lab. Here are 2 questions I can't seem to know how to answer. 1. Explain in your own words why a saturated solution in contact with some undissolved solid is considered to be an equilibrium ...
Thursday, July 19, 2012 at 1:36am

Science
container factory uses a 450 W motor to operate a conveyor belt that lifts containers from one floor to another. To lift 250 1-kg containers a vertical distance of 2.4 m, the motor runs for 45 s. What is the efficiency of the motorized conveyor system?
Wednesday, July 18, 2012 at 9:38pm

Physics
container factory uses a 450 W motor to operate a conveyor belt that lifts containers from one floor to another. To lift 250 1-kg containers a vertical distance of 2.4 m, the motor runs for 45 s. What is the efficiency of the motorized conveyor system?
Wednesday, July 18, 2012 at 8:56pm

US History
1.Which of the following statements about Woodrow Wilson is true? A) He wanted to place strict government controls on corporations. B) He overturned discriminatory laws against African Americans. C) He advocated eliminating the income tax. D) He opposed reforms to the banking ...
Wednesday, July 18, 2012 at 11:58am

Healthcare Finance
Metropolis Health System has received a wellness grant from the charitable arm of an area electronics company. The grant will run for twenty-four months, beginning at the first of the next fiscal year. Two therapists and two registered nurses will each be spending half of ...
Wednesday, July 18, 2012 at 11:53am

Mathematics
x-z=7 x+y=3 z-y=6 For the above system of three equations x= ?
Tuesday, July 17, 2012 at 7:19pm

math
You manage inventory for your company and use a continuous review inventory system to control reordering items for stock. Your company is open for business 310 days per year. One of your most important items experiences demand of 24 units per day, normally distributed with a ...
Tuesday, July 17, 2012 at 9:55am

English
why wouldn't employees be paid or compensated for extensive overtime? Is the branch following eimployee contractual agreements and agency/branch policies? Is the Roanoke branch operating under different salary scales/schedules than others Phoenix offices?
Monday, July 16, 2012 at 11:27pm

Physics(Rotational Energy)
Suppose three masses are arranged as shown, connected by a rodless mass. (2 kg)-------(6 kg)--------(4 kg) 2m 3m a) If this object is free to rotate in space, about what point will it spin? b) A small mass (m=0.1 kg) drops vertically onto the2 kg mass traveling 100 m/s and ...
Monday, July 16, 2012 at 5:42pm

Operating Systems
What two ways (key stroke(s)) do you use to end the COPY CON command?
Monday, July 16, 2012 at 10:36am

Computers
Your sister owns a small clothing store. During a conversation at a family dinner, she mentions her frustration with having to manually track and reorder high demand items. She would like an automated system but has a very small budget. Write a 4-5 page paper in which you ...
Sunday, July 15, 2012 at 8:12pm

Physica
The tension of the string of a system as shown m1=m2=5.00kg in the figure is
Sunday, July 15, 2012 at 6:13pm

Advanced Cost Managemement
Problem 1 - Aunt Ethel's Fancy Cookie Company manufactures and sells three flavors of cookies: macaroon, sugar, and buttercream. The batch size for the cookies is limited to 1,000 cookies based on the size of the ovens and cookie molds owned by the company. Based on ...
Sunday, July 15, 2012 at 3:29pm

Physics
A pulley system os being used to raise a load. The rope begins at the ceilings, goes down, round a pulley on the load, up to a pulley on the ceiling, back down and around a second pulley on the load, and up to a sheave (a motor driven pulley) on the ceiling. The rope is ...
Sunday, July 15, 2012 at 8:26am

Physica
The tension of the string of a system as shown m1=m2=5.00kg in the figure is
Sunday, July 15, 2012 at 3:09am

Anthropology 101
I have and the I just want know if it is correct. 1. The American class system: (Points : 1) is a closed system. is an open system.X is mostly endogamous. is an illusion, because there are no classes. 2. A dowry is: (Points : 1) when, upon marriage, the bride works for the ...
Saturday, July 14, 2012 at 9:43pm

Chem 2
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.00 gallons, what is the boiling point of the solution? Make the following assumptions in your calculation; at normal ...
Saturday, July 14, 2012 at 4:47pm

Harvard Referencing, help please!
Hey, I have here Clinical Protocols in front of me from one of the hospitals. I'm writing up an assignment and need to reference some parts of the protocol. The system that we use in college is Harvard Referencing system but I never referenced protocols before. Any tips? ...
Saturday, July 14, 2012 at 10:40am

Physics
A mass m = 13 kg is connected to two different springs, one on the left and another on the right. It is displaced a distance x to the right from its equilibrium position. (Take k1 = 115 N/m and k2 = 198 N/m.) (a) What is the net force acting on the mass? (Use any variable or ...
Friday, July 13, 2012 at 11:32pm

Physics
The motion of a block-spring system is described by x(t) = A sin(ùt). Find ù, if the potential energy equals the kinetic energy at t = 6.11 s. I'm really not sure how to solve this. It seems that you need more information, either x or A? I appreciate any help...
Friday, July 13, 2012 at 2:36pm

math
a=b+c-2 a=c-d+9 a=b-d+11 Based on the system of equations above, what is the value of a? a) 2 b) 9 c) 10 d) 11 e) 20
Thursday, July 12, 2012 at 10:31pm

Statistics
A reseacher would like to determine whether a change in lighting to full spectrum light bulbs increases productivity on an assembly line. A sample of n= 36 participants is obtained, and the light bulbs over the line are replaced. under general/historical operating procedures, ...
Thursday, July 12, 2012 at 10:10pm

physics
Some kids playing at the park get creative, and they turn a seesaw into a trebuchet – they slide the plank until only 20 cm of its total length of 4 m extends from one side of the fulcrum. While bracing the system in a horizontal position, they place a 0.5 kg cantaloupe ...
Thursday, July 12, 2012 at 1:38pm

Geography
Under the Soviet system the government.. controlled all forms of communication. allowed newspapers to print whatever they wanted. controlled editorials but not the reporting of news. encouraged access to a wide variety of news sources. I think it is either 3 or 4
Tuesday, July 10, 2012 at 9:31pm

Principles of Management - Strategic Management
please review my answers! 1. which of the following is an example of an internal stakeholder of an organization? A) distributors B) suppliers C) Unions D) Individual Workers It is: D) Individual Workers 2. Two drug companies agree to work together to pool their research and ...
Tuesday, July 10, 2012 at 12:21pm

Principles of Management - Effective Management
Please double check my answers please! 1. a team manager is resolving the conflicts that exist among the members of his team in an organization. this is an example of: a. planning b. organizing c. leading d. controlling answer C 2. a manager at a grocery store is trying to ...
Tuesday, July 10, 2012 at 10:16am

Math
You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that ...
Tuesday, July 10, 2012 at 12:02am

Math - Probability
You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that ...
Monday, July 9, 2012 at 9:49pm

College Physics
A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -2.1 x 10-9 C is acted on by a downward electrostatic force of 4.3 x 10-6 N when placed in this field. (a) What is the magnitude of the electric field? (b) What is the ...
Sunday, July 8, 2012 at 9:37pm

MATH
Solve the following system of equations for the unknown variables. a + b = 7 a + c = 12 b + c = 15
Saturday, July 7, 2012 at 10:33pm

Geography - URGENT!
It has been said that Eastern Europe is a political region more than a physical region. Would you agree or disagree with this statement? You must provide a solid argument for your position. My answer: Eastern Europe has only been a political region since after World War II. ...
Friday, July 6, 2012 at 10:16am

algebra
Solve the following system of equations for the unknown variables. x + y = 12 x – y = –2 (NOTE: Show answer in the following format (#,#). If not entered in this format, will be scored incorrect.)
Thursday, July 5, 2012 at 8:50pm

PHY
Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. 1360 m/s correct answer. (b) If an ...
Thursday, July 5, 2012 at 3:35pm

algebra
Solve using the eliminattion method. Show your work. If the system has no solution or an infinite number of solution, state this. -2x-8y==42 -4x+6y=-18
Thursday, July 5, 2012 at 1:15pm

Algebra
Solve using the elimiation method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x=6y= -2 -8x+6y= -26
Thursday, July 5, 2012 at 1:12pm

Physics
In an (x,y) co-ordinates system with x east and y north, an aircraft has the velocity components Vx = -170 ms-1 and Vy = 110 ms-1, and an acceleration of 6.4 ms-2 at an angle od 42 degree from the x axis. What is the angle of the velocity from the x=axis. And what is the y-...
Wednesday, July 4, 2012 at 9:49am

science
please help me in science i don`t now what is the answer of my assignment.dis is a question. 1.what are the main division of nervous system? 2.what are the organs of the central on nervous system? 3.what are the parts of the peripheral nervous system? thank you.
Wednesday, July 4, 2012 at 5:55am

algebra
Solve using the elimination method. Show your work. If the system has not solution or an infinite number of solutions, state this. -2x-8y=-42 -4x+6y=-18
Tuesday, July 3, 2012 at 9:34pm

algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x-6y=2 -8x+6y=-26
Tuesday, July 3, 2012 at 9:32pm

Chemistry - Correction
I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following changes: (a) ...
Tuesday, July 3, 2012 at 3:58pm

Chemistry
I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following changes: (a) ...
Monday, July 2, 2012 at 7:48pm

Physics
A2.0-kg piece of steel with a temperature of 70 degree C is submerged in 1.0 kg of water at 15 degree C. At what temperature does the water/metal system reach equilibrium? The specific heat of steel is 0.107 cal/(g*K). Specific Heat of water is 4185 J/(kg*K.( The answer is 27 ...
Sunday, July 1, 2012 at 10:06pm

Physics
A sunbather lying on a floating raft that experiences no friction with the water gets up and walks to the western end of the raft. While she is walking, how does the center of gravity of the system composed of her and the raft move? Why? If the mass of the raft is 10 times ...
Sunday, July 1, 2012 at 9:28pm

Physics
Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. (b) If an object is fired directly ...
Friday, June 29, 2012 at 10:57pm

system of equations
X^2 + Y^2 =70 Y = 2X + 5 MY ANSWER: -5.6, 1.6 is this correct?
Friday, June 29, 2012 at 1:03pm

prealgbra
brandon needs $480 to buy a tv and stereo system for his room.He received $60 in cash for birthday presents. he plans to save $30 per week from his parttime job.to find how many weeks w it take to have $480, solve 60+30w=480
Thursday, June 28, 2012 at 9:54pm

physics
A 4.7 g bullet is fired horizontally into a 0.50 kg block of wood resting on a frictionless table. The block, which is attached to a horizontal spring, retains the bullet and moves forward, compressing the spring. The block-spring system goes into SHM with a frequency of 8.0 ...
Thursday, June 28, 2012 at 12:10am

Physics
What is the maximum theoretical efficiency of a steam engine operating between 60°C and 410°C?
Wednesday, June 27, 2012 at 11:59pm

English
Someone please help me! I know it long but I need help. ASAP. What's the answer! Discuess whether either party was justified in his/her behavior. What are the effects of benevolent lies, silence, equivocation, or hinting, as alternatives to disclosing what could be hurtful...
Wednesday, June 27, 2012 at 8:44pm

biology 2
The digestive, circulatory, respiratory, immune, and excretory systems all work together to maintain homeostasis. Discuss how a minor malfunction in one of these systems could lead to major malfunctions in others. If methods were developed to improve the efficiency and ...
Monday, June 25, 2012 at 6:23pm

Physics
The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a circular orbit of radius 4.3 1011 m. Find the period of the orbit.
Monday, June 25, 2012 at 11:26am

algebra 1
Solve this system using elimination. If a single solution exists, write the solution as an ordered pair. Your answer will be an ordered pair, no solution, or infinitely many solutions. 5x=y=15 3x+2y=9
Monday, June 25, 2012 at 10:24am

Physics
A block on a spring moves in SHM with amplitude 0.23 m and period 3.8 s. The mass of the block is 2.1 kg. What is the total energy of the system?
Sunday, June 24, 2012 at 7:49pm

Physics
A block on a spring moves in SHM with amplitude 0.23 m and period 3.8 s. The mass of the block is 2.1 kg. What is the total energy of the system? Can someone please take me step by step and show me what my answer should be? Thanks!
Sunday, June 24, 2012 at 7:48pm

managerial Financial Accounting
EXERCISE 12-11. Evaluating Investment Centers with Residual Income [LO 6] Lakeside Hospital is a division of Superior Healthcare organized as an investment center. In the past year, the hospital reported an after-tax income of $2,500,000.Total interest expense was $1,900,000,...
Sunday, June 24, 2012 at 7:17pm

physics
A massless rod of length 1.00 m has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. The system rotates about a fixed axis perpendicular to the rod that passes through the rod 30.0 cm from the end with the 3.00-kg mass attached. The kinetic energy ...
Sunday, June 24, 2012 at 7:09pm

accounting please help!
I have most of them done but would like to have these ones double checked... Please Help!!! 2. The balance sheet format that lists assets above liabilities is the _______ form. A. alphabetical B. liquidity C. account D. report I said B 13. Nick Company reports the following ...
Sunday, June 24, 2012 at 2:33pm

CJS230
Will someone please help me find a resourceful webiste to answer the following questions? What is an example of a state prison system? How might you explain the growth of state prisons? How can U.S. corrections professionals solve the problem of exponential growth in state ...
Friday, June 22, 2012 at 7:01pm

physical edu
Stimulant drugs cannot cause heart attack, stroke and sudden cardiac death. its true right? High blood sugars damage all the following, except ____ 1. the circulatory system, 2. kidneys (from processing too much sugar) 3. and stomach 4. and atherosclerosis. is it 4
Friday, June 22, 2012 at 2:08pm

Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. ÄU = Q - W Where ÄU is the change in the internal energy of the system, Q is the heat/energy ...
Friday, June 22, 2012 at 11:26am

chemistry
An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 8905 J. What is the specific heat of the gas?
Thursday, June 21, 2012 at 9:02pm

Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. Physics(Please respond) - Elena, Thursday, June 21, 2012 at 2:33am ÄU = Q - W Where ÄU is the ...
Thursday, June 21, 2012 at 9:01pm

Geometry
Joel is laying pipe for a sprinkler system before he plants his lawn.The lawn is a rectangle 15 feet long and 8 ft wide. He needs to lay a piece if pipe that will run diagonal along the lawn. It will divide the area of the lawn into two right triangles. what will be the length...
Thursday, June 21, 2012 at 8:04pm

Criminal Justice -rsearch and statistics
I have to write a description of an original research project at least 4 pages long. I have to formulate a theory based on any subject that is relevant to the criminal justice system. My theory should be a definitive statement . There are 3 sections; Theory Construction Data ...
Thursday, June 21, 2012 at 4:31pm

Science help
Will someone please check my work for me? Molecules involved in a chemical reaction must meet to react. What is this concept called? entropy enthalpy collision theory<---- reaction rate 2. Which of the following equations is used to describe reaction rates? ∆H - T&#...
Thursday, June 21, 2012 at 3:35pm

Physics
A system performs 349 J of work on its surroundings while losing 133 J of internal energy. Determine the heat transferred to the system during this process.
Thursday, June 21, 2012 at 11:19am

algebra
A company produces doll houses and sets of doll furniture. The doll houses take 3 hours of labor to produce, and the furniture sets take 8 hours. The labor available is limited to 400 hours per week, and the total production capacity is 100 items per week. Existing orders ...
Wednesday, June 20, 2012 at 8:25pm

Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. I am not sure how to start this. Thank you for the help.
Wednesday, June 20, 2012 at 2:46pm

Physics
The system shown in the figure is held initially at rest. Calculate the angular acceleration of the system as soon as it is released. You can treat MA (1 kg) and MB (12 kg) as point masses located on either end of the rod of mass MC (27 kg) and length L (9 m). (Indicate the ...
Wednesday, June 20, 2012 at 1:22pm

Physics
If someone could help me get started or help me with the first few steps I could probably finish. With Mass A = .500 kg And Mass B = .125 kg Find the angle so that the system will be in equilibrium.
Wednesday, June 20, 2012 at 11:52am

Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. I am not sure how to start this.
Wednesday, June 20, 2012 at 11:51am

Math
Hi, I can't seem to figure out the answer to this problem. Thanks to anyone who can help! *Solve the system of equations. Write your solution(s) in the form (x,y). y = x^2 x^2 + y^2 = 20
Tuesday, June 19, 2012 at 7:31pm

Physics calculus based
Consider the Sun to be at the origin of an xy-coordinate system. A telescope spots an asteroid in the xy-plane at a position given by (x, y) with a velocity given by (vx, vy). [DATA: (x, y) = (3.3, 5.2) ×10^11 m; (vx, vy) = (-6.1, -4.0) ×10^3 m/s.] (A) What will ...
Tuesday, June 19, 2012 at 6:54pm

Intermediate Algebra
Solve using elimination method. If the system has no system or infinite number of solutions, state this. Please show all work. I need to show how I came about my answer. I need this as soon as possible please. I would appreciate any and all help!! 2x+2y=20 2x-2y=4
Monday, June 18, 2012 at 8:51pm

chemistry
calculate the reduction potential for hydrogen ion in a system having a perchloric acid concentration of 2.00 x 10^-4 M and a hydrogen pressure of 2.50 atm.
Monday, June 18, 2012 at 5:43pm

ECONOMICS
For the following questions, you are provided with two statements. Choose the two economic goals THAT ARE MOST IN CONFLICT when considering the difference between the two statements. 1) In a market system, a person is entitled to earn as high an income as possible with no ...
Monday, June 18, 2012 at 11:35am

Physics
A 3.30-kN piano is lifted by three workers at a constant speed to an apartment 28.8 m above the street using a pulley system fastened to the roof of the building. Each worker is able to deliver 197 W of power, and the pulley system is 75.0% efficient (so that 25.0% of the ...
Sunday, June 17, 2012 at 8:01pm

science
what animals dont have a circulatory system. please answer fast thank you
Sunday, June 17, 2012 at 7:23pm

Physics - Center of Mass
A 32-cm-by-32-cm checkerboard has a mass of 120 g. There are four 19-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of the checkerboard, where is the center of mass of the checkerboard-checkers system?
Saturday, June 16, 2012 at 7:41pm

acc/291
I got problem P-13-9-A allfigured out I just can'tP13-9A Condensed financial data of Arma Inc. follow. ARMA INC. Income Statement For the Year Ended December 31, 2011 Sales $392,780 Less: Cost of goods sold $135,460 Operating expenses, excluding depreciation 12,410 ...
Saturday, June 16, 2012 at 1:36pm

Physics
A block with mass 0.55 kg on a frictionless surface is attached to a spring with spring constant 43 N/m. The block is pulled from the equilibrium position and released. What is the period of the system?
Saturday, June 16, 2012 at 1:15pm

chemistry
give the 2 systems of measurement. give at least 5 units used in the English system and 5 units in the metric system.
Friday, June 15, 2012 at 9:12pm

Physics
To supply the plumbing system of a New York office building, water needs to be pumped to a tank on the roof, where its height will provide a "head" of pressure for all the floors. The vertical height between the basement pump and the level of the water in the tank is...
Friday, June 15, 2012 at 4:40pm

Accounting
I need help in working this problem...please help... Gaines Company recently initiated a post audit program. To motivate employees to take the program seriously, Gaines established a bonus program.Managers receive a bonus equal to 10 percent of the amount by which actual net ...
Thursday, June 14, 2012 at 9:05pm

Biology
Which of the following are three common characteristics of echinoderms? A tube feet, circulatory system, body symmetry B marine-dwellers, endoskeletons, water-vascular system C bilateral symmetry, ossicles, respiratory system D mouths, protosomes, body symmetry is it C...
Thursday, June 14, 2012 at 4:32pm

Accounting
What account class would cash prize payment be under? A. Operating expense B. Cost of Goods Sold C. Asset D. Expense E. Liability I'm stuck between A, B, D. Help. thanks.
Thursday, June 14, 2012 at 2:06pm

Social Studies
1. For revolutionaries like Sam Adams, the term _______ embraced a way of life, a core ideology, and an uncompromising commitment to liberty and equality. A. independency B. republicanism C. federalism D. Americanism 2. Which of the following best describes the Columbian ...
Thursday, June 14, 2012 at 10:09am

alg 1
use the method of substitution to solve the system of linear equation 2x-y=5, 9x-4y=22
Wednesday, June 13, 2012 at 6:42pm

Essay:)
Topic: Compare and Contrast the Tang and song dynasties China? The Tang Dynasties (June 18,618-June 4,907)was an imperial dynasty of china preceded by the Sui Dynasty and followed by the Five Dynasties Ten Kingdoms period. It was founded by the cifamily. In chinese history, ...
Wednesday, June 13, 2012 at 3:25pm

College Algebra
solve each system by substitution method x=y+3 3x-2y=4 Pls determine whether the equations are independent, dependent, or inconsistent
Wednesday, June 13, 2012 at 11:39am

physics
An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical advantage of this system...
Wednesday, June 13, 2012 at 5:39am

Physics
A system consists of two particles. Particle 1 with mass 2.0 kg is located at (2.0 m, 6.0 m) and has a velocity of (2.1 m/s, 4.1 m/s). Particle 2 with mass 4.5 kg is located at (4.0 m, 1.0 m) and has a velocity of (4.6 m/s, 4.6 m/s). Determine the position and the velocity of ...
Tuesday, June 12, 2012 at 12:14pm

physics
A satellite with a mass of 260 kg approaches a large planet at a speed vi,1 = 13.1 km/s. The planet is moving at a speed vi,2 = 10.2 km/s in the opposite direction. The satellite partially orbits the planet and then moves away from the planet in a direction opposite to its ...
Tuesday, June 12, 2012 at 12:26am

Physics
A system consists of two particles. Particle 1 with mass 2.0 kg is located at (2.0 m, 6.0 m) and has a velocity of (3.1 m/s, 2.6 m/s). Particle 2 with mass 4.5 kg is located at (4.0 m, 1.0 m) and has a velocity of (1.1 m/s, 0.6 m/s). Determine the position and the velocity of ...
Monday, June 11, 2012 at 7:15pm

Physics
An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical advantage of this system...
Monday, June 11, 2012 at 6:02pm

Physics
Young acrobats are standing still on a circular horizontal platform suspended at the center. The origin of the two-dimensional Cartesian coordinate system is assumed to be at the center of the platform. A 30-kg acrobat is located at (4 m, 9 m), and a 36-kg acrobat is located ...
Monday, June 11, 2012 at 3:39pm

Art
Could you please check if everything is correct? Thank you. 1) In 1986, Eric Drexler published “Engines of Creation”, a scientific dissemination in which shows not only the theoretical bases of nanotechnology, but also a series of speculation about the possible ...
Monday, June 11, 2012 at 1:22pm

Physics. Please help!
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to...
Sunday, June 10, 2012 at 7:58pm

Physics
A 0.95 m rod with uniform mass distribution runs along the x axis with its left end at the origin. A 1.8 m rod with uniform mass distribution runs along the y axis with its top end at the origin. Find the coordinates of the center of gravity for this system.
Sunday, June 10, 2012 at 6:55pm

Physics
From your intergalactic survey base, you observe a moon in a circular orbit about a faraway planet. You know the distance to the planet/moon system, and you determine the maximum angle of separation between the two and the period of the moon's orbit. Assuming that the moon...
Sunday, June 10, 2012 at 5:48pm

Physics!
The figure shows a uniform disk with a circular hole cut out of it. The disk has a radius of 4.00 m. The hole's center is at 2.00 m, and its radius is 1.00 m. What is the x-coordinate of the center of gravity of the system? The center of the disk is (0,0) The center of the...
Sunday, June 10, 2012 at 5:44pm

Math
The operation § associated to any number means “divide the number by 3”. Is the set of integers paired with the operation § a mathematical system?
Sunday, June 10, 2012 at 5:38pm

Managerial Accounting
What is FedEx’s strategy for success in the marketplace? Does the company rely primarily on a customer intimacy, operations excellence, or product leadership customer value proposition? What evidence supports your conclusion? What are FedEx’s four main business ...
Sunday, June 10, 2012 at 11:31am

Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to...
Sunday, June 10, 2012 at 10:52am

Physics 1
Three charges are fixed to an xy coordinate system. A charge of +16C is on the y axis at y = +3.1 m. A charge of -16C is at the origin. Lastly, a charge of +55C is on the x axis at x = +3.1 m. Determine (a) the magnitude and (b) direction of the net electrostatic force on the ...
Saturday, June 9, 2012 at 10:37pm

physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift system in order to lift...
Saturday, June 9, 2012 at 11:44am

Physics!
A 20 kg square slab with side lengths 3.0 m rotates around an axis perpendicular to the slab. A particle of mass 0.60 kg sits on each of the corners of the square. Also, a particle of mass 0.80 kg sits at the center of each of the edges. What is the moment of inertia of the ...
Saturday, June 9, 2012 at 11:31am

physics need help plz
An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical advantage of this system...
Friday, June 8, 2012 at 10:11am

chemistry
Consider the system 2N2O5(g) <----> 2N2O4(g) + O2(g) + heat at equilibrium at 25C. If the temperature were raised would the equilibrium be shifted to produce more N2O5 or more N2O4? 1. more N2O4 2. more N2O5 3. There would be no effect.
Thursday, June 7, 2012 at 10:53pm

Art
Ms. Sue, could you please check this part,too? Thank you 1) He explained why he wrote Gomorrah; he did it for the new generations, seeing kids who dream to be a killer, who see in crime the only way of achievement. Boys and girls without hope. He saw his land without a future...
Thursday, June 7, 2012 at 8:34am

Physical Edu
Which of the following is NOT true concerning behavior change? a. Willpower is the most important factor in changing a new behavior. b. It is a learned skill. c. It involves conscious strategies. d. Having a reward system is helpful. e. Living in a supportive environment is ...
Wednesday, June 6, 2012 at 10:27pm

Art
Could you please check this paragraph, Ms.Sue? This is the last of the day. 1)He is a 28-year-old young writer and journalist born in Naples. He grew up in its hinterland ruled by the Camorra. Since he was a child, he has been aware of the mob's existence, its huge ...
Wednesday, June 6, 2012 at 7:17pm

economics
which is a real life example of a market that is close to perfect competition a.a computer monopoly b.an oil and gas cartel c.farmers market d.public school system.
Wednesday, June 6, 2012 at 7:15pm

computer networking
You are targeting a wirless network in your area do condut some unauthorized activities. what type of security standard would be the easiest to access A. Open System Authenication B. WEP C. WPA- PSK D. 802.11x You are accessing a wirless network in your home which utlizes WEP...
Wednesday, June 6, 2012 at 12:26pm

Physics
A research submarine is operating at a depth of 115m in sea water of density 1025kg/m^3. The absolute atmospheric pressure at sea level is 100kPa. The absolute air pressure inside the submarine is twice that at sea level. Find the net force exerted by the water outside and the...
Wednesday, June 6, 2012 at 8:41am

Accounting
Your client Anjelica Seeds wants to purchase a Burg-N-Fry franchise. The buy-in is $500,000. Burg-N-Fry headquarters tells Anjelica that typical annual operating costs are $160,000 (all cash) and that she can bring in “as much as” $260,000 in cash revenues per year. ...
Tuesday, June 5, 2012 at 9:19pm

Physics(please check)
A 53-N crate is suspended from the left end of a plank. The plank weighs 21 N, but it is not uniform, so its center of gravity does not lie halfway between the two ends. The system is balanced by a support that is 0.30 m from the left end of the plank. How far to the right of ...
Tuesday, June 5, 2012 at 11:44am

Please Answer: Geography
Describe the geography of Southern South America and how this geography influences economic activity? My Answer: Southern South America consists of 3 nations, Paraguay, Uruguay and Argentina. The Rio de la Plata is great river system that consists of 4 rivers that are also the...
Tuesday, June 5, 2012 at 6:33am

Social studies
Show how each improvement helped the Qin dynasty. Improvement. Advantage 1. Road system 2. Canals 3. Great Wall
Monday, June 4, 2012 at 6:58pm

Reimbursement methodologies
You perform the billing for a skilled nursing facility,you are probably using which system?
Monday, June 4, 2012 at 6:16pm

Physics
How far is the center of mass of the Earth-Moon system from the center of the Earth? The Earth's mass is 5.97×1024 kg, the Moon's mass is 7.4×1022 kg, and the distance between their centers is 3.8×108 m.
Monday, June 4, 2012 at 12:57pm

business law
A Fortune 500 CFO admits to having deliberately treated $4 billion in operating expenses as assets, thereby allowing the corporation to show profits instead of losses. The auditor never detected this. The corporation’s stock drops 95 percent and bond covenants related to ...
Sunday, June 3, 2012 at 11:09pm

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