Monday
May 25, 2015

Homework Help: Computers: Operating Systems

Recent Homework Questions About Operating Systems

physics
43. A block of mass 2.00 kg rests on a ramp tilted at 25.0°. Coefficients of friction for the block/ramp: μs = 0.300, μk = 0.100. A string passing over a high quality pulley connects the block with a bucket as shown below. The bucket contains sand but a hole is ...
Tuesday, February 17, 2015 at 6:44pm

Science
Which statement is true of an organ system? A. It supports all part of the organism. B. it is not necessary for the survival of the organism. C. One organ system can take over for another organ system. D. It has no connection with other organ system in the same organism.
Tuesday, February 17, 2015 at 6:37pm

Check my answers SS
Which of the following state program areas consumes the largest part of the executive budget? (1 point) human services education *** natural resources transportation 2. Which state department is responsible for mental health-related issues and welfare? (1 point) human services...
Tuesday, February 17, 2015 at 3:30pm

agreement error
Patient was brought to the operating room, induced in general endotracheal anesthesia, and we then placed him in the supine position on the operating room table.
Tuesday, February 17, 2015 at 2:41pm

Social Studies
1 which statement best describes why constitutions are needed? A Constitutions are needed so that governments don't get carried away with taxes B Constitutions are needed because all of the laws have to be written down somewhere. C Constitutions are needed because without ...
Tuesday, February 17, 2015 at 1:38pm

Science
Getting Oxygen 1) Name the components of the respiratory system in the order incoming air would encounter them during breathing. :Trachea,pharynx,larynx,alveoli,bronchi.​ :Bronchi,larynx,alveoli,trachea,pharynx.​ :Larynx,trachea,bronchi,pharynx,alveoli.​ :...
Tuesday, February 17, 2015 at 12:59pm

english check answers
Over the past ten years more than two dozen athletes have died from the medical condition known as heatstroke. Heatstroke occurs when the body’s internal temperature becomes so elevated that its cooling system begins shutting down. Who is most at risk? Surprisingly, it is...
Tuesday, February 17, 2015 at 11:09am

physics
A woman with mass of 63 kg stands at the rim of a horizontal table having a moment of inertia of 520 kg m2 and a radius of 1.5 m. The turntable is initially at rest and is free to rotate about a frictionless, vertical axis through its center. The woman then starts walking ...
Monday, February 16, 2015 at 5:06pm

Trig/Precalc
The system of equations: |z-2-2i|=sqrt(23), |z-8-5i|=sqrt(38) has two solutions z_1 and z_2 in complex numbers. Find (z_1+z_2)/2. My first instinct on this problem was to square each equation given that the square of the magnitude of a complex number is much easier to deal ...
Monday, February 16, 2015 at 3:58pm

Criminal Justice/Judicial System
Studies indicate that __________ are overrepresented in the jail population. A. Whites B. Hispanics C. African-Americans D. Asians I Think it's B, but not sure.
Monday, February 16, 2015 at 12:30pm

Chemistry
Posted by Cyndy on Sunday, February 15, 2015 at 6:45pm. How many grams of ammonium chloride are needed to raise the ammonia level 5 ppm in a 300 gallon system? Now, I have worked the problem so many times I have confused myself I think. I keep getting 2 different answers ...
Monday, February 16, 2015 at 12:56am

Chemistry
how many grams of ammonium chloride are needed to raise the ammonia level 5 ppm in a 300 gallon system?
Sunday, February 15, 2015 at 6:45pm

healthcare
Health care in Canada is funded by which government? I know Canadas healthcare system is funded by a provincial or territorial basis
Sunday, February 15, 2015 at 5:27pm

Science
The Body's Transport System 1) Which of the following is not a function of the circulatory system? :Breaks down large molecules*** :Delivers oxygen to body cells :Takes carbon dioxide away from body cells :Fights infection 2) Which of the following explains why the heart ...
Friday, February 13, 2015 at 4:53pm

Science
1.The Bohr model of the hydrogen atom is best described as: 1. A large lump of chocolate chip cookie dough with electrons as the chocolate chips; those of higher energy are on the outside surface of the lump 2. Similar to Saturn with electrons of varying energies in a single ...
Friday, February 13, 2015 at 4:24pm

History
1. In 1840 the population of chicago was only 4,470. by 1990 the city's population was 1, 698,575 which factor best explains the population change A- the constructuion of railroads connecting northeastern cities and Midwestern farms B- the reduction in immigration quotas ...
Friday, February 13, 2015 at 1:50pm

Science
1. Which layer of the sun's atmosphere are you looking at when you look at an image of a sun? A) Photosphere B) Chromosphere C) Corona D) Prominence 2. What materials could have been found in a giant cloud that formed the solar system? A- hydrogen and helium B- hydrogen ...
Friday, February 13, 2015 at 1:06pm

Health
The skeletal system is created to ____________ internal organs. (1 point) a.protect**** b.maintain c.support d.hide 2. Your elbow and knee are examples of (1 point) a.ligaments. b.joints.**** c.cartilage. d.angles
Friday, February 13, 2015 at 9:44am

statistics
Below are 36 sorted ages of an acting award winner. Find P10 converting a percentile to a data value 17 21 22 22 22 23 24 30 31 33 37 38 38 42 43 44 45 47 47 50 51 53 54 54 54 54 55 60 64 65 67 69 71 71 72 76 78 I am not sure how this system works and I searched my textbook ...
Friday, February 13, 2015 at 1:22am

Science
What is the first activity of the digestive system?
Thursday, February 12, 2015 at 9:41pm

physics
A student holds two lead weights, each of mass 12 kg. When the students’ arms are extended horizontally, the lead weights are 0.82 m from the axis of rotation and the student rotates with an angular speed of 1.5 rad/sec. The moment of inertia of student plus stool is 5.5 ...
Thursday, February 12, 2015 at 9:25pm

physics
A light, rigid rod l = 5.55 m in length rotates in the xy plane about a pivot through the rod’s center. Two particles of masses m1 = 9.8 kg and m2 = 2.4 kg are connected to its ends. Determine the angular momentum of the system about the origin at the instant the speed of...
Thursday, February 12, 2015 at 9:16pm

AP Chemistry
2 Questions (Multi-choice and T/F, though not sure if they're right, and these 2 questions have no correspondence to each other) 1.) a.) Consider the following system at equilibrium where Kc = 1.20E-2 and H° = 87.9 kJ/mol at 500 K. PCl5 (g) <=> PCl3 (g) + Cl2 (g...
Thursday, February 12, 2015 at 7:59pm

Sciencee
which of the following best describes the function of the endocrine system A. it secretes chemical messengers that travel through the blood to signal changes at target cells. B. It blinds chemical messengers that travel through the blood from target cells. C. It releases ...
Thursday, February 12, 2015 at 5:59pm

Anthropology
I am doing project and need some assisting. Please help me. This only part I need do. In this system, it is important that the tribes inhabitants know about recitatives and how they describes such relationship.Identify if they only speak of living members of a kinship group ...
Thursday, February 12, 2015 at 5:40pm

Science
Which of the following is true about diabetes? A. The pancreas overproduced glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduced glucose, and so insulin must be injected to increase glucose levels C. The pancreas overproduced insulin...
Thursday, February 12, 2015 at 4:54pm

Georgia government HELP! ASAP!!
in 3-5 sentences describe the apportionment system for state legislative districts I cant seem to think of any please help. Ms.Sue
Thursday, February 12, 2015 at 2:27pm

english
Everyone knows that a home should be "child-proof" to protect young babies and toddlers from illness and injury. (2) Pets are also in danger from many common household sources which many people don't realize. (3) Pets can chew and swallow seemingly safe things, ...
Thursday, February 12, 2015 at 10:34am

Physics
A spring with a spring constant of 40.1 N/m is attached to different masses, and the system is set in motion. What is its period for a mass of 2.8 kg?
Wednesday, February 11, 2015 at 7:08pm

Science
1) Which of the following describes the correct sequence of the movement of food during digestion? :Stomach, large intestine, small intestine :Mouth, esophagus, small intestine :Esophagus, stomach, small intestine*** :Small intestine, stomach, large intestine 2) Compare the ...
Wednesday, February 11, 2015 at 4:29pm

english
Everyone knows that a home should be "child-proof" to protect young babies and toddlers from illness and injury. (2) Pets are also in danger from many common household sources which many people don't realize. (3) Pets can chew and swallow seemingly safe things, ...
Tuesday, February 10, 2015 at 10:54pm

Physics
A bullet with a velocity of 200 m/s is shot at a 2-kg block resting on a horizontal frictionless surface. The bullet imbeds in the block and the bullet-block system slides across the surface with a speed of 5 m/s. A) what is the mass of the bullet? B)The coefficient of ...
Tuesday, February 10, 2015 at 8:25pm

Maths
Ques.- Solve the following system of linear equation by matrix method (inverse method) . 12p + 4q + 17r +11s = 5 14p + 8q + 9r + 4s = 8 3p + 7q +2r + 5s = 12 5p + 12q +9r +7s = 7
Tuesday, February 10, 2015 at 9:21am

Math
t=2x-y+5 t=y-2z+10 t=2z-2x+6 Based on the system of equations above, what is the value of t?
Tuesday, February 10, 2015 at 1:30am

chemistry
If ∆G˚= -190.60 kJ of the reaction H2+Cl2 <--> 2HCl , what is the ∆G at -10.5˚C of the system if the pressure of H2=3.2atm and the pressure of Cl2=9.7atm and the pressure of HCl= 7.65atm ?
Monday, February 9, 2015 at 11:18pm

Chemistry
The following reaction has ΔG° = -190.60 kJ: H2(g) + Cl2(g) ⇌ 2 HCl (g) All three gases are placed in a sealed vessel. What is the ΔG at -10.5 °C of the system if the pressure of H2 is 3.2 atm, the pressure of Cl2 is 9.7 atm, and the pressure of HCl is ...
Monday, February 9, 2015 at 10:41pm

health
True or false the endocrine system only regulates long-term changes in the body True*** False Which endocrine glad(s) are responsible for the changes associated with puberty? A. thymus gland B. reproductive glands*** C. thyroid gland D. pancreas Please check
Monday, February 9, 2015 at 9:33pm

science
is this an open or closed system? baking soda reacting with vinegar
Monday, February 9, 2015 at 6:43pm

maths
solve the following system of linear equation by matrix method:- 12p+4q+17r+11s=5 14p+8q+9r+4s=8 3p+7q+2r+5s=12 5p+12q+9r+7s=7
Monday, February 9, 2015 at 5:05am

Math
Solve the system of linear equations by substitution: 1.) y=2x+3 y=3x+5 2.) y=1/3x+2 y=1/6x+4
Sunday, February 8, 2015 at 11:34pm

History
Where is the erie canal located? A- New york B- New Jersey C-Maryland D- Maine Cities grew along railroads and canals because A- the government designed the cities B- workers could not live anywhere else C- settlers could obtain cheap land nearby D- there were not enough roads...
Sunday, February 8, 2015 at 7:01pm

Criminal Justice/Judical System
A federal judge can be removed from the bench via: A. public vote. B. impeachment in the House of Representatives and conviction by the Senate. C. discretion by the president of the United States. D. a majority vote by other federal judges. I think it's B., but not sure.
Sunday, February 8, 2015 at 5:10pm

Criminal Justice/Judicial System
History makes it clear that the federal bench has attracted people from a fairly select demographic, usually the __________ and __________ classes. A. lower upper; upper upper B. upper middle; upper C. middle; upper middle D. lower; middle I think it's D, but not sure.
Sunday, February 8, 2015 at 5:01pm

Math
On January 31, a count of ending inventory was completed, and 7,200 units were on hand. Using the periodic inventory system, calculate the cost of goods sold and ending inventory using LIFO, FIFO, and weighted-average inventory methods.
Sunday, February 8, 2015 at 12:30pm

chemistry
Which of the following processes is entropy increasing in the local system? You may select multiple processes. Combination reactions where two reactants join to make a single product. a system with increasing molecular motion cooling a six-pack of beer by putting it in a ...
Saturday, February 7, 2015 at 5:48pm

Physics
The blocks A and B are connected by a piece of spring. Block B rests on an inclined plane of 40° and block A hangs vertically. The coefficient of kinetic friction between block A and the inclined plane is 0.29. Calculate the acceleration of the system if the mass of block ...
Saturday, February 7, 2015 at 5:40pm

Physics
The blocks A and B are connected by a piece of spring. Block B rests on a smooth inclined plane of 35° and block A hangs vertically. Calculate the acceleration of the system if the mass of block A is 1.06 kg and that of block B is 6.4 kg
Saturday, February 7, 2015 at 5:36pm

anthropology
I am doing a course project. I am having some issue on this part. Politician System Subsistence Bands. This is what I came up with. Bands are the key social /political assemblage, be an average of 50- 80 per band. Generate a “face to face” for the group. Typically ...
Saturday, February 7, 2015 at 4:09pm

anthroology
I am doing a essay, and I need help to start me off on this. Please help me. Give me examples, ideas anything. This what I doing my essay on Political System, subsistence strategy Bands.
Saturday, February 7, 2015 at 11:04am

goverment
How would the compensation system change if the minimum wage provision of the Fair Labor Standards Act of 1938 were repealed
Friday, February 6, 2015 at 11:40am

Chemistry AP
Calculate the pH of a 0.44 M aqueous solution of NH4Cl. Kb = 1.8 × 10−5 . I've tried used the Ka=Kw/Kb equation then used the resulting 5.5e-10 in Kw=([H+][Cl-])/[NH4Cl] , using that to get the [H+], but it isn't correct and I don't know what else to do...
Thursday, February 5, 2015 at 11:07pm

college algebra need help asap
Solve the system of equations using substitution. 2x−8y = 2 x+4y = 0 What is the solution? Select the correct choice below and fill in any answer boxes in your choice. A. m (Type an ordered pair.) B. There are infinitely many solutions. C. There is no solution.
Thursday, February 5, 2015 at 10:28pm

college algebra
A limousine service charges  $20  plus  $0.50  per mile and a taxicab company charges  $1.50  per mile. Write and graph a system of equations for the cost of each ride, find the number of miles for each ride to cost the same, and determine ...
Thursday, February 5, 2015 at 10:24pm

anthropolgy
Animatism, Animism and Deism- describe they vary in differences and similarities. Describe how each belief system is expressed by a particular culture that practices each concept
Thursday, February 5, 2015 at 8:22pm

physic
A 25 gm bullet is fired into a 2.25kg ballistic pendulum and becomes embedded in it. If the pendulum moves a vertical distance of 10cm, calculate: A. The speed of the system after collision B. The initial speed of the bullet C. The percentage of the energy lost in the process.
Thursday, February 5, 2015 at 6:44pm

physics
A particle carrying a charge of 6.0uC is located at the origin of a rectangle coordinate system, and a particle carrying a charge of 4.0uC is located at (0,5.0m). What are the magnitude and direction of the electric field at the positions (5.0m,0), (-5.0m,0), and (0,-5.0m)?
Thursday, February 5, 2015 at 5:31pm

physic
A 25 gm bullet is fired into a 2.25kg ballistic pendulum and becomes embedded in it. If the pendulum moves a vertical distance of 10cm, calculate: A. The speed of the system after collision B. The initial speed of the bullet C. The percentage of the energy lost in the process.
Thursday, February 5, 2015 at 5:20pm

U.S. History
Which answer best explains how the Articles of Confederation established governmental roles in regards to a system of currency? Both Congress and the states could print and borrow money. The states printed their own money. There was no national money. Congress could print ...
Thursday, February 5, 2015 at 11:24am

Physic
A 25 gm bullet is fired into a 2.25kg ballistic pendulum and becomes embedded in it. If the pendulum moves a vertical distance of 10cm, calculate: A. The speed of the system after collision B. The initial speed of the bullet C. The percentage of the energy lost in the process.
Thursday, February 5, 2015 at 10:16am

algebra
Dorothy is thinking of two numbers. The sum of the numbers is 40 and the difference is 6. write a system of equations and use elimination method to find the two numbers.
Thursday, February 5, 2015 at 10:05am

Physics
A block and tackle with a velocity ratio of 5 is used to raise a mass of 25kg through a vertical distance of 400M at a steady rate.if the effort is equal to 60N,determine (a)distance moved by the effort (b)work done by lifting the load(c)the loss in energy involved in ...
Wednesday, February 4, 2015 at 5:42pm

Social studies
Why did South Carolinians support the concept of popular sovereignty? A.it advanced the plantation system in Kansas B.it allowed slaves to be taken into any territory** C.it showed that compromise was a peaceful way to solve problems D.it was a plan introduced by a southerner...
Wednesday, February 4, 2015 at 11:53am

chemistry
In an adiabatic calorimetry experiment, 100 mL of 0.500 M HCl was added to 100 mL 0.500 M NaOH to produce 200 mL 0.25 M NaCl. A temperature increase of 3.38 °C was measured. Calculate the heat of reaction associated with this process at 25 °C from the data in Table 1...
Wednesday, February 4, 2015 at 11:23am

algebra
2. Jamar and Scout are having a candle wax drinking competition! Jamar has already downed 14 oz. of candle wax and can drink it at a rate of 3 oz. of candle wax per minute and Scott has only downed 8 ox. of candle wax so far but can drink it at the faster rate of 5 oz. per ...
Wednesday, February 4, 2015 at 7:04am

Anthropology
Ms.Sue, I am having problem with this, can you please assist me? Thank you Describe how each belief system is expressed by a particular culture that practices each concept.
Tuesday, February 3, 2015 at 10:22pm

Math
4x-2y=7  3x+6y=9 Please help me solve this system by multiplying
Tuesday, February 3, 2015 at 9:04pm

Criminal Justice/Judicial System
In alternative or problem-solving courts, __________ stay involved in the cases from beginning to end. A. court-appointed counselors B. defense attorneys C. judges D. prosecutors I think it's C, but not sure.
Tuesday, February 3, 2015 at 5:32pm

Anthropology
Review the concepts of Animism, Animatism, and Deism and describe how they vary in differences and similarities. Then, describe how each belief system is expressed by a particular culture that practices each concept. Animism is the belief that all life forms (humans, animals, ...
Tuesday, February 3, 2015 at 4:18pm

science 1 question
In which way does the circulatory system rely on the skeletal system? A. Glucose is secreted by compact bone as an energy source for blood. B. Spongy bone stores minerals needed by blood cells. C. Bones provide a source of oxygen to blood. D. Blood cells are produced in bone ...
Tuesday, February 3, 2015 at 3:18pm

Criminal Justice/Judicial System
In alternative or problem-solving courts, __________ stay involved in the cases from beginning to end. A. court-appointed counselors B. defense attorneys C. judges D. prosecutors I think it's C, but not sure.
Tuesday, February 3, 2015 at 1:59pm

Criminal Justice/Judicial System
One concern with specialized courts is that they are ________; critics say that treatment, individualized sentencing, and judicial monitoring coddle offenders. A. insufficient in judicial buy-in B. a passing fad C. blurred D. soft on crime I think it's D, but not sure.
Tuesday, February 3, 2015 at 1:35pm

Computers
1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images only Educational material is no longer ...
Tuesday, February 3, 2015 at 12:41pm

algebra
Solve each system graphically. If a system has an infinite number of solutions, use set builder notation to write the solution set. If a system has no solution, state this. x + y = 6 x - y = 4 I'm lost, Please Help!! Thank you
Tuesday, February 3, 2015 at 1:32am

Physics
A thickness planer is a machine that uses a rotating blade to shave a thin layer of wood off the top of the surface. While operating, a piece of wood is inserted such that it causes the machine to struggle and slow down due to resistance of the lumber. Curiously, the 15 amp ...
Monday, February 2, 2015 at 8:43pm

Criminal Justice/Judicial System
According to the Justice Department's Bureau of Justice Statistics, ________ of every 100 murder and nonnegligent manslaughter defendants are convicted. A. 17 B. 68 C. 46 D. 31 I think it's B., but not sure
Monday, February 2, 2015 at 8:03pm

Criminal Justice/Judicial System
In terms of serious offenses, _______ results in the lowest convictions. A. nonnegligent manslaughter B. motor vehicle theft C. aggravated assault D. drug trafficking I think it's B., but not sure
Monday, February 2, 2015 at 7:08pm

Medical
Can some one please tell me all the: adjectives adverbs conjunctions nouns prepositions pronouns verbs - in this paragraph? please! Thank you. The patient was brought to the operating room and Bier block anesthesia was performed. The right upper extremity was prepped and ...
Monday, February 2, 2015 at 6:51pm

Science
1. Suppose a patient comes in to see a physician. This patient lacks the ability to keep warm and needs to wear heavy clothing even during mild temperatures. Which system of this patient’s body should the physician be concerned about? A. integumentary B. Skeletal C. ...
Monday, February 2, 2015 at 6:17pm

Physics
A paladin howitzer fires a 46.00 kg projectile towards a 1000 kg metal block resting on a frictionless surface. Just before impact, the projectile is traveling with a horizontal velocity of 529 m/s. After the collision, the embedded projectile and the metal block move along ...
Monday, February 2, 2015 at 5:40pm

physics
Consider the following system with a 2 kg mass sitting on a table, connected to both 1 kg and 3 kg masses by strings which go over two separate pulleys and are pulling on the 2 kg mass in opposite directions. What static friction coefficient would be required between the 2 kg ...
Monday, February 2, 2015 at 4:58pm

Criminal Justice/Judicial System
The __________ is/are the federal trial court(s) and is/are the "entry point" into the federal judicial system. A. U.S. Supreme Court B. circuit courts C. district courts D. court of appeals I think it's C., but not sure.
Monday, February 2, 2015 at 3:35pm

Physics
Find the potential energy of a system often point charges. 7nC and 2nC separated by 0.03m
Monday, February 2, 2015 at 11:03am

Thermodynamics
A 196-g aluminum calorimeter contains 530 g of water at 19.8° C. Aluminum shot with a mass equal to 273 g is heated to 100.0° C and is then placed in the calorimeter. Find the final temperature of the system, assuming that there is no heat transfer to the surroundings.
Sunday, February 1, 2015 at 11:52pm

Criminal Law
Summarize all of the steps between arrest, pre-trial, trial, and appeals (both state and federal appeal possibilities). Explain the contingencies for each stage of the proceedings and address all possible outcomes. Analyze how constitutional protections for the defendant work ...
Sunday, February 1, 2015 at 11:21pm

Physics
A spring fixed to a wall is attached to a 6 kg block of wood on the other end. The block rests on a frictionless surface. The spring with spring constant 100 N/m is compressed by 0.1 m and releases. With what frequency and period will the block/spring system oscillate? -I drew...
Sunday, February 1, 2015 at 1:48pm

Anthropology
Where, if any, would you find a working kinship system within the United State
Saturday, January 31, 2015 at 3:02pm

Anthropology
why the kinship system work? Answer Because it help out the people
Saturday, January 31, 2015 at 1:56pm

Criminal Justice/Judicial System
Congress has delegated the responsibility of setting the rules of practice, procedure and evidence in federal courts to the ___________ of the United States. A. federal judges B. state judiciary C. Rules Committee D. Judicial Conference *34 L03 I think it's D., but not too...
Saturday, January 31, 2015 at 11:07am

anthropology
Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both questions. This is my answer, am I right? Most of us are in a kinship system with spouses, children, parents, grandparents, siblings, uncles and...
Saturday, January 31, 2015 at 10:53am

anthropology
3. Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both questions. most of us are in a kinship system with spouses, children, parents, grandparents, siblings, uncles and aunts. No I cannot find a ...
Friday, January 30, 2015 at 11:48pm

chemistry
nearest star distance of 4.3 light years proxima centauri is the nearest star to our solar system. what is the distance to proxima centauri kilometers? the speed of light in space is 2.998 x10^8 m/s.
Friday, January 30, 2015 at 8:48pm

anthropology
2.As an anthropologist you are interested in the dynamics of a Matrilineal society. What characteristics would you identify as unique within this kinship system from your own? 3.Why do kinship systems work? Where, if any, would you find a working kinship system within the ...
Friday, January 30, 2015 at 1:14pm

physics
The equation of a SHM of a 600 g object is given as x = 0.45 cos 6.4 t where the displacement x is in meters and time in seconds. What is the total energy of the system?
Friday, January 30, 2015 at 4:28am

Science
1. Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the body into the air...
Thursday, January 29, 2015 at 5:06pm

physics
A block and tackle with a velocity of 5 is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate,if the effort is equal to 60N,determine the distance moved by effort, work done by the effort in lifting the load and the loss of energy involved in ...
Thursday, January 29, 2015 at 11:06am

math
Two station astronauts will each perform three 8-hour EVAs within 13 days to repair a damaged solar panel that was impacted by a micrometeoroid on the space station. What is the total amount of oxygen needed by the two astronauts to accomplish this? Please put your answer in ...
Thursday, January 29, 2015 at 6:43am

chemistry 116
The thermite reaction demonstrated in class requires high temperatures to start the reaction. A simple open flame is not enough to start the reaction. Once the reaction is going, then it generates enough heat to keep the reaction going. According to the literature on thermite...
Wednesday, January 28, 2015 at 1:05pm

physics
a spring balance is tied to a massless inextenxible string a small object of mass 60kg is attached to the hook of the spring balance. this system is now whirled about a vertical axis so that object performs ucm with centripetal acceleration/21m/s^2.thespring balance will now ...
Wednesday, January 28, 2015 at 7:46am

Chemistry
Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction quotient, Q?
Tuesday, January 27, 2015 at 10:43pm

Math
Jamie is saving money to buy a new video system. So far, he has saved $16, which is 15% of the total cost of the system. What is the total cost of the system?
Tuesday, January 27, 2015 at 3:57pm

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