Is it correct to say Is he at work now or Is he now at work?
52,020 results
(28) Chemistry  Science (Dr. Bob222)
Which of the following statements is correct? A) The internal energy of a system increases when more work is done by the system than the heat that flows into the system. B) The system does work on the surroundings when an ideal gas expands against a

Math
You’re involved in the design of a new facility. It is important for people to move between work stations quickly. Based on the figure below, how many feet would a person need to walk to get from Work Station 1 to Work Station 3? Work Station 1 5 feet

physics
A 1kg 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

Physics
you lift a 10 N physics book up in the air a distance of 1m at a constant velocity of .5m/s. What is the work done by the weight of the book? a) +10 J b)10 J c) +5 J d)5 J 10 N is the force of gravity and to find work you do this: W=F_g(change in

English
Identify the correct sentence. a) Please pick me up at five p.m. at night after work. b) Please pick me up at 5 p.m. after work. c) Please pick me up at 5 pm at night after work. d) Please pick me up at 5:00 p.m. after work. B

Physics
of the following ways, which one is the best way to increase the power output? A. Increase the amount of work done in a given time or do a given amount of work in less time. B. Increase the amount of work done in a given time or do a given amount of work

Digital Arts
A copyright allows for all of the following EXCEPT A. using someone else's work B. telling other people you made up the idea* C. using but slightly changing some else's work D. creating a new work that uses part of copyrighted work Animated films take

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 onehalf drive to work alone c) Exactly 3 drive to work alon

physics
A pair of sleds weighs 25kg and experiences a frictional force of 25N. If a dog team applies a 175N force pulling it 12m. 1. Find the work done by friction 2. Find the work done by the dog team 3. Find the net work done I need to compare my answers so the

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

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 don't have any work expericence could i just said that or is it talking about another work

Math
which ordered pair is the solution of the following system of equations? y=2x3 x+y=3 1) (1,2) 2)(2,1) 3)(3,0) 4)(3,3) MY work: y=2x3 x+(2x3)=3 3x3=3 +3 +3 3x/3=6/3 x=2 x+y=3 2+y=3 2 2 y=1 so I got (2,1) which would be answer 2 Is this correct? Thanks

Math
if f(x) = 2x^2+4 and g(x)=x3 which number satisfies f(x)= (f o g)(x) A) 3/2 B) 3/4 C) 5 D) 4 I am positive that answer A is correct, i just cant get the work to prove it, i can disprove all other answers and my teacher has assured me i am on the right

Physics 11
A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I've already answered & gotten this question correct, however it made me confused about the concept. I found Ek. & Ek to find change in Ek which was

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

chem
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the work associated with this change? A. Work is negative and is done to the system. B. Work is negative and is done by the system.

Chemistry I
For the methanol combustion reaction 2CH3OH(â„“) + 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 27â—¦C. 1. 2.5 kJ, work done by the

Science
1. How do machines make work easier? 2. How do you calculate work (what is the formula for work?) 3. What is the formula for mechanical advantage? 4. How does friction impact work?

History
Why did Nicholas Copernicus wait to publish his works on his deathbed? His work on the three laws of motion contradicted the Lutheran Church. His work on heliocentric theory went against Catholic doctrine and beliefs. His work included the dissection of

Math
Solve the equation for d 0.2(d6)=0.3d+53+0.1d I had d=16 Work: 1. distribute 2. 0.2d1.2=0.3d+53+0.1d 3. 0.2d=0.4d+3.2 4. 0.2d=3.2 5. divide 6. d= 16 I even did a check 0.2(d6)=0.3d+53+0.1d 0.2(166)=0.3(16)+53+0.1(16)

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

math
A can finish a work in 24 days , B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days.The remaining work was done by A in ? any idea please i used work rate concept but i did not reach to the answer

biology
Why did Nicholas Copernicus wait to publish his works on his deathbed? His work on the three laws of motion contradicted the Lutheran Church. His work on heliocentric theory went against Catholic doctrine and beliefs. His work included the dissection of

English
I still have a few sentences to check. I really hope you can help me check them. I added a few more sentences. 1)I think the best thing to do is working at a passion because in this way you'll work better than anyone else. 2)You feel the need to go to

Physics
A luggage handler pulls a 20kg suitcase up a ramp inclined at 25 degrees above the horizontal by a force F of magnigutde 145N that acts parallel to the ramp. The coefficient of kinetic friction between the ramp and the incline is .30. If the suitcase

Calculus
An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the plane is 600 mi/hr. Find the rate at which the angle of elevation is changing when the angle is 30 degrees. I found the answer to be 60 radians/hr by

Math
A $15 item on sale for $12 is marked down what percent? 100 * $12 = $1200 $1200/$15 = $6000 Did I do the correct work, or is it this: 100 * $3 = $300 $300/$15 = $4500 Is the first work correct or is the second work correct?

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

English
1. I prefer working to doing nothing. 2. I prefer to work rather than to do nothing. 3. I prefer to work rather than do nothing. 4. I prefer to work to to do nothing. 5. I prefer to work to do nothing. [Are the sentences from #1 to #3 correct? Which ones

Maths
. Two friends Kallis work separately they work of levelling, alternately for one Kallis and Clerk take up the work of levelling the field. If they stely they take 8 hours and 12 hours respectively to finish the muelling the ground. They decide to finish

Government US
26. U.S. Bureau of Labor statistics reveal that the great majority of those workers who lost their jobs in 2001 did so because a. they are lazy. b. of either a temporary layoff or the permanent elimination of a job position. c. they were undereducated for

Physics 11
A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I used change in energy = work to find work against inertia which was 3479.85 Then I used V^2=V.^2 + 2ad to get ad=47.025 I then used W=mad to get work

Calculus
Does my answer look correct? Find the derivative. 11, y= (e^3e)(e+5)/6e my work: ((6e)(4e^3 + 15e^2  2e  5)  (6)(e^4 + 5e^3  e^2  5e))/ (6e)^2 Multiplied/divided everything through My answer: (10e^2 + 30e  3)/ 18 I cant follow your work: I assume e

math,correction
simplify: 7sqrt(7x) + 5 sqrt (7x) My work: (7+5)sqrt (7x) My answer: 12sqrt (7x) is this correct? It looks fine. Good work. Thanks for asking.

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? anot enough information b40 will not work

Simplifying Rational Expressions4x12/4x
These are the answers i wanted corrected: 4x12/4x d+7/d^249 t^225/t^2+t20 2x^2+6x+4/4x^212x16 6y/y^22y24 You will have to use brackets to show the intended order of operation. How can we 'correct' your work if you supply neither solutions nor

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.

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

Physics 11
Can someone explain what work total is? In my lessons it said Work total is the sum of all work & showed an example of different work being added together. An assignment after that however made me think that may not be the case... Do I need to add the work

English  Native speakers
Hello! I am trying to figure out one of the most difficult thing in English  articles. So I have one question: Do we say I'm leaving home (Would people know that home means the place where we live?) Or is it correct I'm leaving the home? I personally

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

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

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

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) Let’s divide the work amongst the two of us. d) Let’s divide the work betweens the three of us.

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

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)= 3x4. Find (f+g). Work: (x+2) + (3x4) Answer: 4x2 2.Given f(x)=x+2 and g(x)=3x4. Find (f*g). Work: (x+2)(3x4) Answer: 3x² +2x8 3.Given f(x)=x+2

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

Math
Hello, I need a little assistance with showing my work on this question. The equation is 4 7/8 x 2/3. I have to explain how this person is wrong then show the work the correct way. Okay so the person's work is written as, "4 7/8 x 2/3 = 4 14/24 = 4

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

Physics
How is work affected when an object is lifted straight up instead of using a ramp? Work will increase. Work will decrease. Work will stay the same. Work will depend on the mass of the object.

physics
A man lifts a 10 kg sack of rice from a ground to above his head using his both hands. The sack of rice does not experience a change in kinetic energy between the two positions. Which of the following statement is correct? A The work done on rice sack by

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 ?

mathsword 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

Physics  pulley
A construction crew pulls up an 87.5kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.5 m and it arrives with a speed of 15.6 m/s having started from rest. Assume that acceleration was not constant. I have

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?

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

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

science
A person applies a 13.5 N force to a hammer while it moves a distance of .12 m. The hammer completes 1.56 J of work on the nail. What is the efficiency of the hammer? Must show all work, have correct sig figs, and include correct units for full credit

Math / Algebra
Factor: 8ab  16ac + 12a anyone wanna help me out with this, i know how to normally work out problems like this but for some reason im not getting the correct answer when i work it out...

statistics
A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classes Data collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a) Determine the test statistic.

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

Math
Please help me with this step by step show your work problem. 4b8+1b^2+2b^3 (b= 2) My work 4b8+1b^2+2b^3 4(2)8+1(2^2)+2(2^3) 88+1416 8+8+516 16+516 5 Could you check my work? If it is incorrect, could you show me the

Math
Paul was given this math problem on a test to simplify: 1/4 + (5/8 + 1/2). after calculating, Paul mistakenly simplified to 9/32 as his final answer In which step did Paul make his first error? Show your work! My work Paul's work 1/4 /9/8 1/4 /(5/8 + 4/8)

mat115
Please help me with this math question. I am asked to show my work but I don't know how to solve the problem to show my work. The question is: Choose the correct list of factors of the number 8. Again, I have to show my work with this question. Please help

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?

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

English
1. He had to help his grandpa get work. 2. He had to help his grandpa get a job. 3. He had to help his grandpa get a work. (Does #1 have the same meaning as #2? What about #3? If we add 'a' before work, is it correct?)

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~

Englishplease help
To bring to your organization enthusiasm, dedication, responsibility, and good work ethic, combined with a desire to utilize my skills obtained through work experience. Is that correct sentense??

English
1. He never wants to work. 2. He wants to never work. 3. He wants never to work. ============================ Can we use all the expressions? In #2, 'never' is put before 'work'. Is it a split infinitive? Can we use this way?

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.

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

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

English
Can you please if the following instructions on how to carry out a project work are grammatically correct? Thank you very much in advance. 1)Your dissertation should include five chapters. The first should contain the introduction to your work, followed by

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

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

physics
What is the average useful power output of a person who does 5.50×106 J of useful work in 6.50 h? 235 W correct answer Working at this rate, how long will it take this person to lift 1850 kg of bricks 1.20 m to a platform? (Work done to lift his body can

Physics
During an adiabatic process, the temperature of 6.50 moles of a monatomic ideal gas drops from 525 °C to 169 °C. What is the work done? Here is my work, is it correct? T1 = 525+273 = 798 K T2 = 169 + 273 = 442 K work done = R[T2T1]/1gamma = 8.314[525 

English
1. I have a staff who works for me. 2. I have a staff who work for me. 3. I have a staff of one who works for me. 4. I have a staff of ten who work for me. 5. I have ten staff who work for me. 6. I have ten staffs who works for me. 7. I have ten step

Chemistry
A system has an initial energy of 117 joules. The energy equation includes 40.1 J of heat and 20.3 J of work. What is the final energy? Was heat added to the system or to the environment? Was work done by the system or to the system? Be sure to show all

physics
two people push in opposite directions on a block that sits atop a frictionless surface. The soles of their shoes are glued to the surface. if the block originally at rest moves to the right a distance of d. Describe qualitatively how much work is done by

Art
an environment artist created a piece in protest of trash. Anticipation negative public reaction, the artist decided to display the work anyway. what is the most likely reason? A. The artist believed that the purpose of the work was to stir up awareness B.

Math
Limit = x>infinity 11x^5+4x^36x+2/6x^3+5x^2+3x1 My work: After doing lots of work I got 11/x^2 +4 6/x^2 +2/x^3 All over 6+5/x+3/x^21/x^3 So then I get 4/6 but the correct answer is supposed to be infinity.. I'm very confused

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

Physics
Starting from rest, a 5kg block slides 2.5 m down a rough 30o incline in 2 seconds. Find a) the work done by the force of gravity. b) the work done by friction. c) the work done by the normal force Help ASAP please!! Show work step by step only with the

Economics
If I have a business in producing books and the demand decrease at the same time there is a recession and I have more people willing to work. I'm assuming that my product will be less demanded and my supply will increase because more people are willing to

Mathematics
Show ALL work or explain in details the correct solution: Which equation represents “fifteen more than r is sixtyone”? I know the answer is r + 15 = 61 but how would I explain how i got the correct solution/show all work?

algebra1/McDougal Littell
I need to know how to work this problem and show my work: 1/5x3x+2=2/5x + 18 First rather the x so: 1/5x3x+2=2/5x+18 1/5x3x2/5x=182 3.2x=16 x=5 x=5 I don't know if this is correct. Please cheak over it. i don't unstand math. how can i?

Algebra
Can someone please tell me if my work and solution looks correct. I am a little unsure of whether or not I did it correctly. Equation: sqrt(x+2)  x = 0 sqrt(x+2) = x x + 2 = x^2 x^2  x  2 = 0 (x2)(x+1) = 0 x = 2 and x = 1 1 does not work, so the

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

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

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 :/

Dot product
I cant get the correct answer and I can't figure out what I am doing wrong. If a=(2,2k) and b=(4,k) are perpendicular, find k. I have worked it out, and I got 2 but it doesn't work when I check it in the original equation. It should be a.b=0 and then plug

language
How do you diagram the sentence , The little girls adorn themselves with chains of dandelions.I hope this is alright if I cannot shew my work on the computer , but I shewed my work at home and just wanted to see if I got it correct. But just wanted to let

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

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?

Physics
To compress spring 1 by 0.23 m takes 188 J of work. Stretching spring 2 by 0.27 m requires 211 J of work. Find the force constants. K1 = K2 = I have derived the formula for k as k = W/(2x^2) but when i plug in the values the answer isn't correct.

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

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

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