Wednesday
July 23, 2014

Search: work

Number of results: 17,919

Chemistry I
For the methanol combustion reaction 2CH3OH(ℓ) + 3O2(g) ----> 2CO2(g) + 4H2O(g) estimate the amount of P [change]V work done and tell whether the work was done on or by the system. Assume a temperature of 27◦C. 1. 2.5 kJ, work done by the system 2. 2.5 kJ, work done on ...
July 1, 2010 by Anonymous

Science
Work or no work? Work=ForcexDistance 1. A person holding a box of potatoes. No work 2. A batter holds his bat at his side while waiting for his turn to play. No work 3. Your sister carries home her books from school. No work 4. You push a box from point A to point B along the ...
February 4, 2014 by Jerald

maths
Please guide me to solve the below problem: 'A'an do 2/3 of a work in 40 days.'B'can do 1/2 of the work in 75 days.'C'can do 3/4of work in 75 days.If all them together work in how many days will they do 5/6 0f the work. I had solved the above problem like this: A can do the ...
September 4, 2011 by Ramesh Reddy

arithmetic
A and B can complete a piece of work in 8 and 10 days respectively However they work alternately one day each with beginning the work In how much time will the work be completed?
February 3, 2012 by Ramesh

physics......PLEASE HELP!!
A steam engine absorbs 1.98*10^5 J and expels 1.49*10^5 J in each cycle. Assume that all of the remaining energy is used to do work. a. What is the engine's efficiency? b. How much work is done in each cycle? If a gasoline engine has an efficiency of 21 percent and loses 780 J...
February 14, 2007 by anonymous

science
percentages: to use a machine,u must do the work on the machine called input work. the machine then foes the work on and object called output work. not all the input work gets transmitted to output work. some work is lost due to friction in the machine. if a machine has an ...
September 12, 2007 by kim

English
1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do any volunteer work? 5. Are you doing any volunteer work? (Which question is ...
October 27, 2010 by rfvv

Physics
You take a 10 N block and lift it 1 meter vertically from the floor and then place it back down on the floor. How much work do you do during this motion? W = F x d x cos(theta) So lifting it does work and the lowering it does negative work won't that cancel out to get OJ of work
July 1, 2014 by Macy

java programming
You need to provide more than a yes or no answer for this question. Consider both the selection sort and the bubble sort. If these algorithms will work with duplicates explain why they will still work. If they will not work, explain why they will not work. If one will work and...
July 29, 2006 by george

Social Studies
In what way is Islam most likely to impact Muslims during their work days? A. they must leave work early B. they will not participate in leisure activities after work C. they cannot have certain jobs D. they need to pause during their work to pray ?
February 10, 2014 by Anonymous

About work
Hello am new at this work at home but i never find any good site i can work with pls help am from nigeria send me link of good work at home that can suit me nothing is small to earn. thanks
July 25, 2011 by Adewale

Science
where is a thermostat used where is a thermocouple used How does an outdoor thermomter work? How does a clinical thermometer work? How does a themostat work? How does a thermocouple work? If anyone knows the answer, please help! Thanks! ~Slappy~
December 1, 2008 by Slappy

Math
Ok I need help to figure out how to solve this problem 4 working move into town looking for work. A local business offers them 200 hours of work. The catch is, they have to work the same number of hours as they do days. I.E. if they work 8 hours they have to work 8 days. What ...
August 17, 2010 by Mo

physics
if a particle has work of 8J and doubles its speed. how much work it has done? Can we still determine work in this problem without mass
March 4, 2010 by eng

English
Can you please help me work out phrasal verbs related to work? When do you think will you come ...... to work? What are the possible prepositions? back .... are there others? What about "down"? Can you think of any phrasal verbs used with work (apart from take a day off work, ...
March 22, 2012 by Matthew

5th grade math word problems
bob started each work on the hour. one day he decided to start work twenty minutes early. he started work when his digital watch had consecutive numbers. what time did he start work
November 13, 2012 by Anonymous

math
A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of assembly work. Each Y model requires 1 hour of electronic work and 3 hours of assembly work. Each model Z requires 3 hours of electronic work and 2 ...
February 18, 2012 by Jen

math
A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of assembly work. Each Y model requires 1 hour of electronic work and 3 hours of assembly work. Each model Z requires 3 hours of electronic work and 2 ...
October 1, 2012 by justin

English
A theme is best described as? A. A moral lesson presented in a work of literature B. The central idea or insight about life revealed in a literary work C. The subject of a work of literature D. A series of related events in a literary work I picked B but it siad it was wrong
May 6, 2012 by MM

English
(1) Are you doing any volunteer work? How about your friends? 1. Yes, I am. They are doing (some) volunteer work, too. 2. No, I'm not. They are not doing (any) volunteer work, either. (2) Do you do any volunteer work? How about your friends? 1. Yes, I do. They do (some) ...
November 18, 2010 by rfvv

Physics
please check these: In which of the following sentences is WORK used in the scientific sense of the word? a. holding a heavy box requires a lot of work b. a scientist works on an experiment in the laboratory c. sam and rachel pushed hard, but they could do no work on the car d...
February 9, 2009 by y912f

fine arts
Describe what work the three brothers from Flanders are known for and how this work was illustrated. i think their most known work is the "Book of Hours" . but i need help in the second part
January 9, 2009 by y912f

Physics
A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20 angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 14 m long. work done by the applied force work done...
November 18, 2009 by Anonymous

11th garde physics
A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20 angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 17 m long. a)work done by the applied force=? b)...
February 13, 2010 by Luricela

Physics
Which of the following is true? a. Conserved forces cannot do work b. Work can be performed on an object without moving it c. If the work is done by a conserved force, you do not need to know the path the object took d. To know the total work performed on an object you must ...
February 26, 2011 by Paige

time n work
a and b together can do a piece of work in16 days.b and c can do same work in 32 days.after a worked for 4 days and b for 12 days c takes it up and finishes it in 48 days.in how many days will each of them complete work
June 24, 2014 by Navami

English
Posted by rfvv on Wednesday, October 27, 2010 at 8:52am. 1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do any volunteer work? 5...
November 6, 2010 by rfvv

PHYSICS HELP
I am having a real problem with this question. Through the process of doing work, energy can move between the external world and the system as the result of forces or work. I say it's forces, but someone else says it's work because only work and energy can be inerchanged. Who ...
January 10, 2007 by Pat

Physics Conservation of energy
A box is pushed across the floor against a constant frictional force. The box is pushed across the room to the east in 30 seconds and returned to its starting point (pushed to the west) in 60 seconds. Which of the following is true about the work done and the power expended in...
June 13, 2011 by Casey

Physics
a skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we conclude from the work ...
March 24, 2011 by Otto

English
Identify the sentence with the correct word choice. a) Let's divide the work among the three of us. b) Let's divide the work between the three of us. c) Lets divide the work amongst the two of us. d) Lets divide the work betweens the three of us.
June 16, 2011 by Anonymous

Physics (please help!!)
A skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we conclude from the work ...
March 24, 2011 by Otto

Physics (please help!!!!)
a skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we conclude from the work ...
March 24, 2011 by Otto

Physics
h t t p : / / i m g 2 0 5 . i m a g e s h a c k . u s / i / c a p t u r e b b . j p g / i am stuck on part c how do i find work with out using the spring constant work equals force parallel times displacement at which the force is acted during... Work done by spring = .5 kx^2 ...
February 28, 2010 by Kate

math
tom's work is 18km away, he starts walking to work at 5:30. He walks 4km every hour. His work opens at 9:00 will he be on time? sue leaves home and ride her bike to work at 7:30. She rides 12km every hour. When does sue overtake tom. how far have they travelled?
March 1, 2009 by sam

Physics
An object of mass .550kg is lifted from the floor to a height of 3.5m at a constant speed. How much work is done by the lifting force (include units)? b.) How much work is done by the Earth on the object? c.) What is the net work done on the object? d.) What is the change in ...
December 9, 2012 by Tim

Physics
15. A refrigerator weighing 1500 N is to be lifted onto a truck bed that is 1.0 m above the ground. When pushed up a slanting ramp 2.0 m in length a force parallel to the ramp of only 800 N is required to move it at constant velocity. Comparing the work involved in lifting the...
July 8, 2014 by Anonymous

Physics (please help!!!!)
A skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we conclude from the work ...
March 25, 2011 by Otto

math
A does 8/15 of a work in 8 days and the remaining work is finished with the assistance of B in 4 days . how long will B take to do the work alone
April 22, 2012 by majumder

math
A does 8/15 of a work in 8 days and the remaining work is finished with the assistance of B in 4 days . how long will B take to do the work alone
April 26, 2012 by majumder

MATH
A does 8/15 of a work in 8 days and the remaining work is finished with the assistance of B in 4 days . how long will B take to do the work alone
May 1, 2012 by MAJUMDER

statistics
12) The regression equation Credits = 15.4 - .07 Work was fitted from a sample of 21 statistics students. Credits is the number of college credits taken and Work is the number of hours worked per week at an outside job. A) Interpret the slope. B) Is the intercept meaningful? ...
September 27, 2010 by kim

Physics (Work)
The work required to stretch a certain spring from an elongation of 4.54 cm to an elongation of 5.54 cm is 31.1 J. (a) Is the work required to increase the elongation of the spring from 5.54 cm to 6.54 cm greater than, less than, or equal to 31.1 J? (b) Verify your answer to ...
August 5, 2010 by Kate West

English
1. I want to do volunteer work at a nursing home. 2. I want to do volunteer work in a nursing home. (Which preposition should we use? Are both OK?) 3. I want to do volunteer work at an orphanage because I want to take care of orphans who are helpless. 4. I want to do volunteer...
August 21, 2013 by rfvv

communication
The concept of "work ethic" is closely linked to motivation because: motivation and ethics each guarantee you will work hard. people with a strong work ethic believe in hard work. people with a strong work ethic always are successful. motivation and ethics aren't learned; you'...
June 28, 2010 by ros

physics
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the objectfs speed. If you do work W, suppose the objectfs final speed is v. What will be the objectfs final speed if you do twice as much work? 1. 4 v 2. 2 v 3. Still v 4....
January 16, 2010 by Anonymous

physics
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2. 2 v 3. Still v 4.v...
January 16, 2010 by Anonymous

Business Law
Which of the following is true about determining whether someone working for another is an independent contractor or an employee? a) The classification of the person doing the work depends on that person's job title. b)The classification of the person doing the work depends on...
April 12, 2007 by Gurv

chemistry
1.)Calculate the number of moles in 3.50 x 10^21 atoms of silver. Show all work. 2.) Calculate the number of atoms in 2.58 mol antimony. Show all work 3.) Determine the mass of 1.45 mol FePO4. Show all work. 4.) Calculate the number of mol in 6.75 g of NaCl. Show all work. 5...
February 9, 2014 by Raina

math
A and B can finsih a work in 16 days and 12 days respectively. A started the work and worked at it for 2 days. He was then joined by B . find the total time taken to finish the work
November 26, 2013 by nitesh

Physics
A pendulum of length L=26.0 cm and mass m= 168 g is released from rest when the cord makes an angle of 65.2 degrees with the vertical. A) how far (m) does the mass fall before reaching its lowest point? My work: .26m - .109 = .151 m B) how much work (J) is done by gravity as ...
May 26, 2011 by Casey

English
1. My father goes to work by car. 2. My father goes to work by his car. 3. My father goes to work in his car. (Which one is grammatical?) English - Jen, Tuesday, May 18, 2010 at 11:11pm I would say "my father drives his car to work". 1 is probably the most acceptable of those...
May 19, 2010 by rfvv

Physics
A factory worker pushes a 29.2kg crate a distance of 4.1m along a level floor at constant velocity by pushing downward at an angle of 28 degrees below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. (a) What magnitude of force must the ...
March 17, 2014 by Garrett

JOB
WHY CAN`T KIDS WORK Kids do a lot of work. They do their school work and help with chores around the home. Some kids who live on farms also help their families with the farm work. Some teenagers earn money by baby sitting or doing chores for other people. But kids can't get ...
October 13, 2006 by KENDELISHA

Physics
A 4.00kg crate is slowly lifted to a height of 1.50m. a.How much work is done by the lifting force? b.against gravity? C.by gravity? a, Work done is m*g*height b. the work done is against gravity. c. Because the box is lifted, the work done by gravity is negative (-mgh)
September 16, 2006 by stefy

math
Sara has gone to work for 60 days. On 39 of those days she arrived at work before 8:30A.M. On the rest of the days she arrived after 8:30A.M What is the experimental probability that she will arrive at work after 8:30A.M the next day she goes to work
February 27, 2011 by Trina

physics
When we studied the concept of work, we learned that work = force x distance. Now we learn that torque = force x distance. What's different about these two definitions?A) For work, distance and force are in the same direction; for torque they are perpendicular to each other.B...
March 1, 2012 by jim

principles of physics
When we studied the concept of work, we learned that work = force x distance. Now we learn that torque = force x distance. What's different about these two definitions?A) For work, distance and force are in the same direction; for torque they are perpendicular to each other.B...
March 2, 2012 by CHRIS

6th grade
I need to balance the equation and show my work. Ex. N - 2.4 = 5 +2.4 = +2.4 ----------- N = 7.4 How would I show my work for: 2.3 + 4.09 = N I know the answer is 6.39 because I add 2.3 and 4.09 but how do I show the work? Thanks
May 10, 2009 by Michele

Math Word Problem %
lisa spend 3 hours driving to and from work each work day. what percent of her day does she spend driving to and from work each work day?
May 8, 2014 by andra

social studies
explain or give a reason why slaves should have less hours to work.. REMEMBER YOU ARE THINKING LIKE A PERSON FROM 1815. NOTE: Please do not say because they work to hard and need to work less.. Be specific with your writing. Thank you
April 27, 2013 by Wilfredo

chemistry
For a certain reaction at constant pressure, ∆H = -15kJ, and 22 kJ of expansion work is done on the system. What is ∆U for this process? So I know ∆= ∆U + Work flow If work is being done on the system, shouldn't work flow be positive? So I assumed it ...
February 12, 2013 by Catelyn

ethics
if you have a certain amount of work to do each day, and you can complete that work AND spend an hour on a social networking site, then why not? Why don't offices let their employees use social networking sites if their work is done?
November 5, 2010 by Anonymous

Physics
how much work is required to lift a 98-N block of ice if A) it is lifted a vertical distance of 5-m.? B) you push the same block of ice up a 7-m long ramp using in acompare to the work required in b.? C) How does the work required in A compare to the work required in B.? D) ...
November 7, 2010 by Tyler

ethics question 2
if you have a certain amount of work to do each day, and you can complete that work AND spend an hour on a social networking site, then why not? Why don't offices let their employees use social networking sites if their work is done?
November 5, 2010 by Anonymous

Physics
A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23. (a) What magnitude of force must the worker apply? (b) How much work is done on the...
November 2, 2011 by Abdul Waheed

Physics
Question # 1 Marks = 12 A worker pushes 25Kg crate a distance of 5m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic frication between the crate and the floor is 0.23. (a) What magnitude of force must the worker apply? (b) How ...
November 1, 2011 by M. Yousaf Khan

physics
You do a certain amount of work on an object initially at rest, and all the work goes into increasing the object's speed. If you do work W, suppose the object's final speed is v. What will be the object's final speed if you do twice as much work? 1. 4 v 2. 2 v 3. Still v 4.v/(...
January 16, 2010 by Anonymous

Physics
a 330 kg piano slides 3.6 m down a 28 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. the effective coefficient of kinetic froction is 0.4. calculate a) the force exerted by the man, b)the work done by the man on the ...
April 25, 2009 by Nat

physics
a 330 kg piano slides 3.6 m down a 28 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. the effective coefficient of kinetic froction is 0.4. calculate a) the force exerted by the man, b)the work done by the man on the ...
April 27, 2009 by Nat

Algebra
Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?
March 4, 2014 by June

physics
my answer for these are 1. a 2.c 3 d but not sure so please anyone see if i am correct 1. In which of the following cases is work done on the object? A. Lifting an object off the floor. B. Pushing an object, but it does not move C. Carrying an object at a constant velocity D. ...
November 6, 2011 by jasmine

Maths
I am trying to work out the area and perimeter of an equilateral triangle but am only given the altitude (12cm), i have tried everything from c^2 = a^2 + b^2 to b x h / 2 and nothing seems to work. How do i work this out with only one measurement?
March 15, 2008 by Josh

sociology- social work
What influences in your life draw you to work with older adults? What do you anticipate will be a rewarding aspect of this work? What might be a challenge? What do others you speak to say when you indicate that you are interested in working with older adults?
January 18, 2012 by Alice

Physics
A 57.5-kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...
November 12, 2012 by Anonymous

Basic algebra
Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?
March 4, 2014 by Mike

physics
if a child pulls an old wagon up a steep incline on a sidewalk, what does a child's work do? i say, it would increase, due to the fact that it is a steep hill and it takes more work to pull the wagon up??? The child's work is done aganst gravity, and results in an increase in ...
October 1, 2006 by mitch

English
1. I liked the work very much because I could help orphans who needed love. 2. I liked the work very much because I could help children who had no father and mother. 3. I liked the work very much because I could help orphans who needed care. 4. I liked the work very much ...
October 24, 2010 by rfvv

ap chemistry :(
consider the reaction C6H14 + 9.5O2 yields 6CO2 + 7H2O at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no work is done as the ...
October 18, 2012 by sam

physics
1. In which of the following cases is work done on the object? A. Lifting an object off the floor. B. Pushing an object, but it does not move C. Carrying an object at a constant velocity D. None of these 2. The energy of a system increases when A. a force is applied to it B. ...
November 6, 2011 by kiren

English
I urgently need you to check the following sentences on job satisfaction.Thank you. 1) This newspaper article is about job satisfaction. It claims that the root of job satisfaction lies in your attitude and expectations. 2) First, it is essential to consider the kind of ...
December 19, 2011 by Henry2

physics
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.0 below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force...
March 10, 2014 by Mohanad

ap chemistry :(
consider the reaction C6H14 + 9.5O2 yields 6CO2 + &H2) at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no work is done as the ...
October 18, 2012 by samuel

Physics
A spring with a spring constant of 22N/m is initally compressed by 2.3cm. How much work is required to compress the spring an additional 1.7 cm? I can't find information in my book about compression; only work and exertion. Please help and provide all steps for work. Thank you...
June 23, 2013 by Jackie

Physics, still don't get it!
Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is frictionless and has a negligible mass. The area of the piston is 3.06 10-2 m2, and the pressure outside the cylinder is 1.02 105 Pa. Heat (2109 J) is ...
April 18, 2007 by Mary

physics
A 17 kg block is dragged over a rough, hor- izontal surface by a constant force of 170 N acting at an angle of angle 32.1◦ above the horizontal. The block is displaced 33.9 m, and the coefficient of kinetic friction is 0.199. a] find the work done by 170N b] find the ...
November 14, 2010 by mary

English
Shall I replace "you" with "people" or "we"? Thank you. 1.This newspaper article is about job satisfaction. It claims that the root of job satisfaction lies in people's attitude and expectations. 2) First, it is essential to consider the kind of approach to work people have. ...
December 19, 2011 by Henry2

Physics
A 1.1 kg book is lying on a 0.77 m -high table. You pick it up and place it on a bookshelf 2.3 m above the floor. 1. How much work does gravity do on the book? 2. How much work does your hand do on the book? How do you find work?
August 6, 2011 by falcon306

English
1. They were so happy enough even to forget to eat their lunches. (Is this sentence grammatical? Is the position of 'even' right?) 2. Where does she do volunteer work? 3. Where does she do the volunteer work? 4. Where does she do her volunteer work? (Which ones are correct? ...
October 10, 2010 by rfvv

algebra
THE COMMUTER Sensible Sally has a job that is 35 miles from her home. She needs to be at work by 8:15 a.m. Sally wants to maximize her sleep time by leaving as late as possible but still get to work on time. From experimentations, Sally discovered that if she left at 7:10, it ...
March 7, 2013 by sarah

Math
(1) 4/5 Multipled by 5/7 in simplest form. My answer is 1.9 dont really know if its write show work. (2) -1 1/6 divided by 2/9= -5 1/4 need help showing work. (3)-6 2/5 divided by (-2 2/7) = 2 4/5 (4) 2 2/3 divided by (-4 1/4) = -11 1/3 i nedd help showing my work
December 5, 2013 by Tisha

MEDICAL CODING & BILLING
I JUST GOT A NEW COMPUTER AND I CAN NOT OPEN UP MY DELMAR CD AND FINISH MY WORK CAUSE IT ISN'T COMPATIBLE WITH WINDOWS 7 AND THAT IS WHAT I HAVE ON MY COMPUTER SO I WAS WONDERING IF SOMEONE COULD TELL ME WHAT I SHOULD DO SO THAT I CAN GET MY CD TO WORK ON MY COMPUTER CAUSE I ...
August 31, 2011 by JULIANNA

physics.
Heat engine X takes four times more energy by heat from the hot reservoir than heat engine Y. Engine X delivers two times more work, and it reject seven times more energy by heat to the cold reservoir than heat engine Y. Find the efficiency of heat engine X and heat engine Y. ...
April 26, 2007 by jean

physics
A 280 kg piano slides 4.3 m down a 30 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. Calculate: (a) the force exerted by the man, (b) the work done by the man on the ...
October 7, 2009 by pauleen

Physics- Work
A worker pushes a 1.50*10^3 N crate with a horizontal force of 345 N a distance of 24.0 m. Assume the coefficient of kinetic friction between the crate and the floor is 0.220. a. How much work is done by the worker on the crate? b. How much work is done by the floor on the ...
October 27, 2010 by Pablo

Physics
As you lift a chair to store is upside down on a desk, gravity exerts a force, mg, downward and you exert a force of the same magnitude upwards. The two forces are equal in magnitude and opposite in direction. From this is would appear that no work was done, but you know you ...
March 21, 2012 by Becky

PHYSICS
according the graph sown, the net force acting on an object varies wth the object's displacement.calculate the work down by the force on the object at the various displacements listed below (i won't bother telling you since you don't have a graphy, but I figured out the work ...
January 29, 2010 by Sarah N H

physics
A 1-kg block is lifted vertically 1m by a boy. The work done by the boy would be one jule or would no work be done. I'm confused, I thought lifting wasn't considered work. The work done is actually about 9.81 joules. Think of gravity pulling on the block as an invisible string...
November 6, 2006 by susane

Physics: Work
1st question: I was solving a question and I was asked the work done by friction. It is natural that work done by friction (a retarding force)should be negative and in my answer it was. However, just to be sure, work can be negative? 2nd question: A block of m = 2.00kg is ...
March 12, 2007 by Matt

Physics
You pull on a rope that is attached to a box. The rope makes an angle of 25 degrees with the ground. You are pulling the box at a constant velocity. The force you are pulling with is 78N. The box weighs 25N. You pull the box a displacement of +16m. What is the work done by you...
January 5, 2012 by charlie

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members