Friday

June 24, 2016
Number of results: 21,988

**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*

**chem please help**

Which of the following is true about work? A. Work depends on time. B. Work helps retain the state of matter. C. The SI unit of work is the watt. D. Work can cause a change in the form of matter. I know it is not a or b so whats the answer
*November 17, 2014 by Morgan *

**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*

**MATHS HELP URGENT(TIME AND WORK)**

A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?
*January 1, 2016 by JACK*

**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**

A MACHINE OF EFFICIENCY 60% IS USED TO RAISE A LOAD OF 150kg THROUGH A VERTICAL DISTANCE OF 2.5m.CALCULATE THE WORK DONE [IN JOULES]. I tried E=WORK OUTUT/WORK INPUT times 100% 60=150 times 10 times 2.5/work input times 100 60 times work input=3750 times 100 work input=375000/...
*January 31, 2016 by JOY*

**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*

**Physics **

Nicole is late for work. She jumps in her car and drives to work in 3.5 minutes. Her work place is 3.85 km away from her house. The speed limit between home and work is 50 km/hour. Is Nicole speeding?
*March 10, 2016 by Tom*

**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*

**maths-word problem help**

A and B can finish a piece of work in 12days and 18days respectively. A begin to the work and they work alternately one at a time for one day each.The whole work will be completed in? Help me plz show step thanks
*May 6, 2016 by dam*

**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*

**physics **

The internal energy of a system changes because the system gains 180 J of heat and performs 338 J of work. In returning to its initial state, the system loses 111 J of heat. During this return process, what work is involved? If the work is done by the system, then give the ...
*December 3, 2014 by S*

**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*

**math**

A and B can do a piece of work in 12 days. They started to work together but A left after a few days. If B alone worked for 20 days, the whole work was finished in 24 days. How long would A take to complete the work??? question is really confusing :/
*October 21, 2015 by clive*

**math**

Janice conducted a survey at the local calculator factory. She discovered that 10% of every 80 calculators did not work. Using this survey, what kind of predictions can she make about the next 400 calculators? a-not enough information b-40 will not work c-5 will not work d-8 ...
*March 30, 2016 by Andrea*

**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*

**maths**

Driving to work alone. It is reported that 77% of workers aged 16 and over drive to work alone. Choose 8 workers at random. Find the probability that a) All drive to work alone b) More than one-half drive to work alone c) Exactly 3 drive to work alon
*January 12, 2015 by saima*

**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*

**help social studies**

in what ways is Islam most likely to impact Muslim during their work days a.they most leave work early b.they will not participate in leisure actives after work c.they cannot have certain jobs d.they need to pause during they work to pray
*January 15, 2016 by shynice*

**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*

**social studies (Saudi Arabia)**

In what way is Islam most likely to impact Muslims during work days? 1)They must leave work early 2)They will not participate in leisure activities after work 3)They can not have certain jobs 4)They need to pause during their work and pry I think it is 4. Am I correct? please ...
*January 22, 2015 by Abby*

**economics**

Does Marx's essay help illuminate any of your own work experiences? Can you relate to his discussion? Why or why not? what if i dont have any work expericence could i just said that or is it talking about another work
*November 7, 2014 by 2phoneeeeee *

**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- energy and work**

To push a 33.0-kg crate up a frictionless incline angled at 27.0 to the horizontal, a worker exerts a force of 388 N parallel to the incline. The crate moves a distance of 4.10 m. What work is done on the crate by the worker? What work is done on the crate by the weight of ...
*November 12, 2014 by Hi*

**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*

**Fine Art**

I have to examine the art work "Winged Genie Fertilizing a Date Tree" and explain the elements of art found in the art work and explain what type of movement is shown in this work. I'm really struggling with this and behind on my work. Any help anyone could give me would be ...
*November 10, 2014 by Kylee*

**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*

**Physics**

Alright, I can't figure it out, here's the problem. 3. A boy is giving his little sister a ride in the wagon. He pulls with an applied force of 20N. The frictional force against him is 20N and the sled is traveling 2m/s. If the boy pulls the wagon 45m, how much work does he do...
*January 28, 2016 by Ashtin*

**physics**

A sledge weighing 30 kg is pulled with a rope that makes 60 with the horizontal. The tension on the rope is constant and it is 37N. The sledge is moved horizontally for 13 m. There is no friction and cos(60)=0.5 a) What is the work done by the tension on the sledge in Joules...
*February 15, 2015 by Ashly*

**boitumelong**

Eddie took 3over5 hours to finish a work but john finished the same work in 7over9hours who finished the work in less time .give reasons
*August 19, 2015 by sphe*

**Physics**

A 2.32 kg block slide down a ramp from a height of 4.19 m. The block has a speed of 3.25 m/s when it reaches the bottom. There is friction. What is the work (in J) done by gravity? What is the work done by friction? I found the work of friction already. KE= .5m(v^2) KE= .5(2....
*October 27, 2014 by Jordan*

**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*

**English**

1. I can't concentrate on work. 2. I can't concentrate at work. 3. I can't concentrate (on something) at work. ------------------ Which one is correct? Does #1 mean #3? English - Writeacher, Saturday, June 18, 2016 at 8:46am 1 and 2 are fine, but mean different things. 3 will...
*June 20, 2016 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*

**MATHS**

A and B can do a piece of work in 10 days, B and C in 15 days, A and C in 12 days. A,B and C work together to finish the work. If they are paid $1500, how should the money be divided?
*December 31, 2015 by clive*

**Math**

I wanted to double check that I am correct on the work area and answers please. 1.Given f(x)=x+2 and g(x)= 3x-4. Find (f+g). Work: (x+2) + (3x-4) Answer: 4x-2 2.Given f(x)=x+2 and g(x)=3x-4. Find (f*g). Work: (x+2)(3x-4) Answer: 3x +2x-8 3.Given f(x)=x+2 and g(x)=3x-4. Find (...
*September 30, 2014 by kim*

**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*

**MATHS**

A and B take 18 days to complete a work. A left the work after 10 days and B takes 12 days more to complete the work. In how many days can A complete the whole work?
*December 31, 2015 by clive*

**Chemistry **

Given that W = -PatmΔV, if a gas expands into a vacuum, the sign of W is ? 1. Positive: work is being done on the gas 2. Negative: work is being done on the gas 3. Positive: work is being done by the gas 4. Negative: work is being done by the gas 5. ZERO: no work is being...
*June 21, 2016 by Melodie *

**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*

**astronomy**

If you drop a feather and a steel hammer at the same moment, they should hit the ground at the same instant. Why doesnt this work on Earth, and why does it work on the Moon? Will it work on Phobos, a moon of Mars?
*September 17, 2015 by nilmar*

**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*

**Algebra**

If you got paid $15 for 3 hours of work one day and $45 for 8 hours work on another day. Find your hourly rate of pay for the 2 days. My work: 15+45=60 8+3=11 60/11=5.45 What was done wrong?
*March 4, 2015 by Anonymous *

**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*