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April 20, 2014

Search: How much work is required to lift a 4.3-kg concrete block to a height of 2.3 m?

Number of results: 76,338

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) ...
Sunday, November 7, 2010 at 1:55am by Tyler

physics
How much power is required to do 110 J of work on an object in a time of 0.4 s? W How much power is required if the same work is done in 5 s? W
Monday, January 23, 2012 at 10:02pm by james

Physics
A 855 N crate rests on the floor. a) How much work is required to move it at constant speed 7.7 m along the floor against a friction force of 180 N? b) How much work is required to move it at constant speed 7.7 m vertically? I really NEED help I am very lost with physics!!!!
Thursday, October 15, 2009 at 12:50pm by Jen

science
how much work is required to pull a sled if you use 60j of work in 5 seconds
Tuesday, January 17, 2012 at 2:10pm by vidula

Physics need work checked
How much work is required to lift a 5.1-kg concrete block to a height of 3.6 m
Wednesday, May 2, 2012 at 2:00am by Anonymous

math
A 3000 pound car is pushed 500 feet by three boys. A force of 60 pounds is required to move the car. How much work did the boys accomplish? How much work can each boy claim if he did his share?
Sunday, March 30, 2008 at 11:49am by walt

physics
A 3000 pound car is pushed 500 feet by three boys, a force of 60 pounds is required to move the car. How much work did the boys accomplish? How much work can each boy claim if he did his share?
Sunday, March 30, 2008 at 11:49am by walt

Physics
Time required (s) = (Work required, J)/(Power, W) The amount of work required is W= M g *(10 meters) = 300*9.8*10 Joules Finish the calculation
Tuesday, November 25, 2008 at 10:05pm by drwls

calculus
A trough has a trapezoidal cross section with a height of 5 m and horizontal sides of width 2.5 m and 5 m. Assume the length of the trough is 14 m. How much work (in joules) is required to pump the water out of the trough (to the level of the top of the trough) when it is full...
Monday, July 23, 2012 at 12:03pm by Zac

Math-word problem
A 3000 POUND CAR IS PUSHED 500 FEET BY THREE BOYS, A FORCE OF 60 POUNDS IS REQUIRED TO MOVE THE CAR. HOW MUCH WORK DID THE BOYS ACCOMPLISH? HOW MUCH WORK CAN EACH BOY CLAIM IF HE DID HIS SHARE?
Tuesday, October 30, 2007 at 11:03am by DAN

calc/physics
A force of 250 N is required to stretch a spring 5m from rest. Using Hooke's law, F=kx, how much work, in joules, is required to stretch the spring 7m from rest? The energy required scales with x^2. Multiply 250 J by (7/5)^2.
Monday, April 23, 2007 at 3:46pm by Mischa

physics
In the zero-friction case, ZERO work and no power is required on a flat (level) road. If the coefficient of kinetic friction is 0.012, a force of F = 0.012 M g = 353 N is required to push the car. (That is about 80 lb) Use that for the work and power required. Work = F * X ...
Saturday, January 8, 2011 at 12:06pm by drwls

Physics
If it requires 7.0 of work to stretch a particular spring by 2.1 from its equilibrium length, how much more work will be required to stretch it an additional 3.7?
Monday, November 1, 2010 at 7:42pm by Stew

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...
Sunday, June 23, 2013 at 1:03pm by Jackie

chemistry
2C2H6+702=4CO2+6H20 how many grams of oxygen are required to completely burn60.0g ethane (C2H6) show work Using the above equation how many Lof 02 are required to burn 20.0Lof ethane thank u soo much this is for a test
Tuesday, May 1, 2012 at 1:09am by megan

physics
Spring on Incline The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane. How much work is required to move the block 25 cm down the plane if the frictional ...
Wednesday, October 9, 2013 at 6:37pm by Elizabeth

Physics
Spring on Incline The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane. How much work is required to move the block 25 cm down the plane if the frictional ...
Tuesday, January 28, 2014 at 7:46pm by Elizabeth

physics
A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is required to pull him 60m up a 30.7 slope (frictionless) at a constant speed of 3 m/s? answer in units of kJ. In this question, I think I gotta use mgh ...
Sunday, September 17, 2006 at 5:46pm by puff puff

physics
Part 1) The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane. How much work is required to move the block 50 cm down the plane if the frictional coefficient is...
Wednesday, October 9, 2013 at 6:37pm by Hunter

PHYSICS
The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert a force of approximately 800 N as it contracts a distance of 7.5 cm in a 78 kg male. How much work can the biceps muscles (one in each arm) perform in a single contraction? 1 J ...
Wednesday, October 27, 2010 at 5:13pm by Petrik

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 ...
Thursday, August 5, 2010 at 2:45am by Kate West

physics
A technician needs to determine the amount of energy required to increase the temp. of a vat containing 12 kg of water. The water enters the vat from the water mains at a temp. of 15 deg C. The technician knows that the final temp. required is 90 deg C. How much energy is ...
Tuesday, April 8, 2014 at 12:11pm by Huliney

physics
A large stone is dragged 15m over a frozen lake. If the coefficient of friction between the stone and the ice is 0.1 and the whole process takes 8 seconds, how much work is done and how much power is required?
Sunday, June 12, 2011 at 8:02am by Gazza

physics
A 100Kg stone is dragged 15m over a frozen lake. If the coefficient of friction between the stone and the ice is 0.1 and the whole process takes 8 seconds, how much work is done and how much power is required?
Sunday, June 12, 2011 at 9:00am by Gazza

Physics
The torque required is the same. Work is torque times angle rotated through. Since both wrenches rotate the nut 2 pi raidans, the work required is the same. The longer wrench will required less force on the handle of the wrench, because of its longer lever arm.
Wednesday, March 6, 2013 at 11:10am by drwls

science
How much work is required to lift a 3.7-kg concrete block to a height of 2.7 m?
Friday, September 3, 2010 at 6:11pm by ashley

science
How much work is required to lift a 3.3-kg concrete block to a height of 1.2 m?
Saturday, February 4, 2012 at 2:06pm by vanessa

physics
how much work is required to give an object 600 J of potential energy?
Thursday, May 31, 2012 at 8:23pm by lisa

physics
how much work is required to give n object 450J of kinetic energy?
Thursday, May 31, 2012 at 8:25pm by lisa

work/science
A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter?
Friday, September 3, 2010 at 7:14pm by ashley

physics
If it requires 5.5 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be required to stretch it an additional 4.1 cm?
Saturday, November 12, 2011 at 1:21pm by Bill

physics
No; it takes four times as much work to double the velocity. Remember that kinetic energy = (1/2) M V^2 The work required equals the kinetic energy gain.
Monday, December 27, 2010 at 12:17am by drwls

Physics Please help!
If it requires 5.5J of work to stretch a particular spring by 2.3cm from its equilibrium length, how much more work will be required to stretch it an additional 4.5cm ? Express your answer using two significant figures. W=_____ J?
Tuesday, February 25, 2014 at 11:59pm by ALI

physics
Your "moving at 1.5 m/s^2" implies an acceleration. Ideally, no work would be rewquired to keep it moving at constant velocity. The accelerating force required is F = ma = 180 N. Multiply that by the distance moved to get the required work.
Friday, November 12, 2010 at 10:38am by drwls

Physics
Select which of the following statements are True or False. Assume Newtonian Mechanics. 1.The work required to lift a mass one meter depends on the speed at which it is raised.. 2.The acceleration of an object is same in all inertial reference frames. 3.The work done by a ...
Thursday, February 28, 2008 at 8:36am by josh g

science
It takes 3.38 J of work to stretch a Hookes-law spring 5.63 cm from its unstressed length. How much the extra work is required to stretch it an additional 4.22 cm? Answer in units of J
Friday, November 16, 2012 at 10:38pm by jason

PHYSICS
A 69.0 firefighter climbs a flight of stairs 22.0 high. How much work is required?
Sunday, February 13, 2011 at 5:20pm by mar

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 ...
Sunday, October 24, 2010 at 10:37pm by rfvv

Physics. please help! due tomorrow!
Let W1 represent the work required to accelerate an object on a frictionless horizontal surface from rest to a speed of v. if W2 represents the work required to accelerate the same object on the same surface from a speed of v to 2v, then which one of the following is the ...
Thursday, October 18, 2012 at 10:42pm by Matt

Science
(a) What magnitude of force must the worker apply? (b) How much work is done on the crate by this force? (c) How much work is done on the crate by frication? (d) How much work is done on the crate by normal force? (e) How much work is done on the crate by the gravity? (f) What...
Monday, March 17, 2014 at 7:02pm by Garrett

Physics
A 74.0 kg firefighter climbs a flight of stairs 12.0 m high. How much work is required?
Saturday, February 13, 2010 at 3:19pm by Luricela

Physics
The work required to stretch a certain spring from an elongation of 4.73 cm to an elongation of 5.73 cm is 31.7 J. (a) Is the work required to increase the elongation of the spring from 5.73 cm to 6.73 cm greater than, less than, or equal to 31.7 J? (b) Verify your answer to ...
Tuesday, February 22, 2011 at 8:04pm by Lauren

Physics
The work required to stretch a certain spring from an elongation of 4.11 cm to an elongation of 5.11 cm is 32.0 J. (a) Is the work required to increase the elongation of the spring from 5.11 cm to 6.11 cm greater than, less than, or equal to 32.0 J? (b) Verify your answer to ...
Monday, March 29, 2010 at 7:39pm by Carden

physics
How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 2 106 m/s?
Tuesday, March 8, 2011 at 3:09pm by Tiniyah

physics
How much work is required to lift a 280 kg refrigerator to the second-story level that is 6m high?
Monday, February 27, 2012 at 11:36am by jim

Calculus
A spring has a natural length of 24 cm. If a 27-N force is required to keep it stretched to a length of 30 cm, how much work W is required to stretch it from 24 cm to 27 cm? (Round your answer to two decimal places.)
Sunday, December 4, 2011 at 5:42am by Courtney

Calculus
A spring has a natural length of 24 cm. If a 27-N force is required to keep it stretched to a length of 30 cm, how much work W is required to stretch it from 24 cm to 27 cm? (Round your answer to two decimal places.)
Sunday, December 4, 2011 at 5:45am by Courtney

Physics
I suppose two reasons. One is that the electrons are on the outside of an atom which makes them much more accessible than the protons which are located in the nucleus. Second, the protons are much more massive than the electron and the kinetic energy required to eject a proton...
Tuesday, April 1, 2008 at 10:56pm by DrBob222

6th grade
The gain in potential energy is 600*2 = 1200 J, and this is the minimum required work that would be required in a frictionless situation. The work that actually has to be done is F*X = 300*5 = 1500 J. The efficiency is therefore 1200/1500 = 80%
Tuesday, November 3, 2009 at 5:39pm by drwls

physics
How much work is required to completely separate two charges (each -1.9 microC ) and leave them at rest if they were initially 6.0mm apart?
Sunday, January 31, 2010 at 4:20pm by Lanise

physics
How much work is required to completely separate two charges (each -1.9 microC ) and leave them at rest if they were initially 6.0mm apart?
Sunday, January 31, 2010 at 4:20pm by Lanise

Physics
How much work is required to stop an electron (m = 9.11*10^-31 kg) which is moving with a speed of 1.50106 m/s?
Sunday, November 7, 2010 at 2:24am by Emma

physical science
How much work is required to lift a 10kg weight 5m off the floor if the time is 10 sec?
Friday, April 1, 2011 at 9:33am by kitten

Science
Eight bricks 6 cm thick with mass 1.5kg lie flat on a table.how much work is required to top them one on another?
Monday, May 14, 2012 at 2:37pm by Christopher

physical sciences
how much work is required to accelerate a can with a mass of 1000kg from 20 metre per second to 30m cubed
Friday, February 1, 2013 at 12:14pm by gedletoon physics

Exxon valdez
Check into the history of payments by Exxon, now Exxon/Mobil to fishermen who were put out of work by the spill. How much did they win in court? How long ago. How much has been paid? How much have courts reduced the required payments? When? How many fishermen have died waiting...
Wednesday, February 2, 2011 at 3:18pm by Damon

Physics
A 1.0 10−6 C test charge is 40.0cm from a 3.2 10−3 C charged sphere. How much work was required to move it there from a point 1.0 102 cm away from the sphere? what formula(s) should be used to calculate work...?
Wednesday, February 24, 2010 at 4:12pm by Lauren

physics (emergency!)
How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 1.99 106 m/s?
Sunday, October 26, 2008 at 12:22pm by maddie

physic
Eight books, each 8.5 cm thick with mass 1.3 kg, lie flat on a table.How much work is required to stack them one on top of another?
Thursday, October 14, 2010 at 2:39am by Anonymous

Physics
Eight books, each 4.1 cm thick with mass 1.8 kg, lie flat on a table. How much work is required to stack them one on top of another?
Wednesday, November 10, 2010 at 3:11am by Linda

College Physics
how much work is required to completely separate two charges (each -1.4 microcoulombs) and leave them at rest if they were initially 8 mm apart?
Thursday, February 3, 2011 at 12:10pm by CourtneyW

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...
Wednesday, November 2, 2011 at 9:00am by Abdul Waheed

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 ...
Monday, March 17, 2014 at 7:04pm by Garrett

math calc 2
a cattle trough has a trapezoidal cross section with a height of 1 m and horizontal sides of width 1/2 m and 1 m assume the length of the trough is 10 m. A. how much work is required to pump out the water in the trough? B. if the length is doubled does the amount of work ...
Thursday, October 25, 2012 at 3:27am by arnulfo

math calc 2
a cattle trough has a trapezoidal cross section with a height of 1 m and horizontal sides of width 1/2 m and 1 m assume the length of the trough is 10 m. A. how much work is required to pump out the water in the trough? B. if the length is doubled does the amount of work ...
Friday, October 26, 2012 at 9:25pm by arnulfo

physics
a book,initially at rest is pushed along a horizontal table top by a horizontal force of 2N. After 1s it has been moved 1.5m. The force of friction is 0.4N a.how much work is done on the book by the 2N force? b.how much work is done on the book by friction? c.what is the books...
Sunday, January 27, 2013 at 2:14pm by confidence

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 ...
Tuesday, November 1, 2011 at 12:52pm by M. Yousaf Khan

Physics
Hooke's law states that it takes a force equal to kΔx is required to stretch a sorting a distance Δx beyond its rest length. A) determine a formula in terms of k & Δx that represents the amount of work required to stretch a spring to a distance Δx. Hint: ...
Friday, January 3, 2014 at 10:45pm by Sandara

physics
two electric charges +10 microC and -20microC are located .35 m apart how much work is required to double the distance between them?
Sunday, November 4, 2012 at 10:35am by Grane

physics
two electric charges +10 microC and -20microC are located .35 m apart how much work is required to double the distance between them?
Sunday, November 4, 2012 at 10:36am by Grane

physics
It takes 5.28 J of work to stretch a Hookes Laq spring 9.82 cm from its unstressed length. How much extra work is required to stretch an additional 11.9 cm? anwser in J Figure the Potential energy at 11.9, and at 9.82cm. The difference is the energy that stretched the spring. ...
Thursday, April 12, 2007 at 5:44pm by hannah

physics
What does your " " symobol mean in front of the C? Let Q be the charge of each. Imagine bringing the charges together one at a time. The work required to bring the second charge within a distance a of the first is kQ/a. The third charge in the line requires kQ/a + kQ/2a. Add...
Saturday, January 26, 2008 at 8:57am by drwls

physics
Add the friction work to the work done against gravity, M g H, to get the total work required. (in part a)
Saturday, January 31, 2009 at 10:52am by drwls

Physical science
How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?
Sunday, March 10, 2013 at 9:50pm by Kizzy

Physical science
How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?
Sunday, March 10, 2013 at 9:53pm by Kizzy

PHySics
A 1.63 nF parallel-plate capacitor is charged to an initial potential difference ΔVi = 100 V and then isolated. The dielectric material between the plates is mica, with a dielectric constant of 5.00. (a) How much work is required to withdraw the mica sheet? Work = .5CV^2...
Wednesday, May 12, 2010 at 10:59pm by Physics

PHYSICS
(1 pt) An aricraft carrier has a mass of 8.9 x10^7kg and can cruise at 55 km/h. a) What is the work required to stop it? J b) What constant force could stop it in 6 km? N a) If only half of the work required to stop it is done, what is its final speed? km/h
Sunday, November 21, 2010 at 1:16pm by applebottom

chemistry
a) how much heat is required to convert the ice to water that is also 0.00 C? b) how much heat would be required to warm this water from 0.00 C to 17.50 C? HELP!! I think the fusion is 333 J/g at 0 C... But I'm not sure what to do with that.
Sunday, September 7, 2008 at 3:28pm by Jeff

Physics
how much work is required to extend an exercise spring by 15 cm if the spring constant k has the value of 800 N/m
Monday, September 13, 2010 at 8:38pm by John

physics
how much work is required to extend an exercise spring by 15 cm if the spring constant k has the value of 800 N/m
Tuesday, September 14, 2010 at 5:28pm by jazmyn

Physic
How much work W is required to accelerat a 1000kg object from initial velocity of 100m/s to a final velocity of 200m/s?
Friday, April 5, 2013 at 5:41pm by Cynthia. Rodgers

physics
a 650 newton crate rests on the floor. how much work is required to move it at a constant speed, 3 meters against a friction force of 150 Newtons
Tuesday, March 22, 2011 at 10:46pm by melanie

physics
The work required is the same in both cases, and equals the potential energy increase, 1200 N * 9.8 m/s^2*1.5 m = _ J Less force is required when the ramp is used but the movers have to push the refrigerator farther. The vertical force required would be M g. When rollers and a...
Tuesday, November 3, 2009 at 1:35am by drwls

Physics
How much work is required to stop an electron (m= 9.11 * 10^-31 kg) which is moving with a speed of 1.8010^6 m/s?
Sunday, October 17, 2010 at 6:54pm by Eden

Physics
A 0.4-kg ball has a velocity of 20 m/s. a. What is the kinetic energy of the ball? b. How much work was required to lift the box to this position?
Tuesday, December 28, 2010 at 12:31pm by Sylvia

physics
how much work is required to lift a 10 newton weight from 4.0 meters to 40.0 meters above the surface of earth
Tuesday, February 15, 2011 at 7:42pm by abu

Physics (please help!!!!)
A box with a volume V = 0.04 m3 lies at the bottom of a lake whose water has a density of 103 kg/m3. (a) How much force is required to lift the box, if the mass of the box is 1050 kg? (b) How much force is required to lift the box, if the mass of the box is 100 kg? (c) How ...
Saturday, April 16, 2011 at 3:00pm by Anonymous

Physics
(a) The energy required to do the lifting is M g 40 sin 30 = 14,900 J (b) Divide the work required by the time. To pull 40 m at a rate of 2.5 m/s will require a time of 40/2.5 = 16 seconds. The power required will be in Watts. 746 W = 1 Horsepower, in case you want to convert ...
Wednesday, March 10, 2010 at 7:36pm by drwls

enthalpy change
The heat required to raise the beaker temperature will be 3/4 as much the second time, becasue of the delta-T rTIO. The heat required to heat the liquid will be higher by a factor (200/250)(2.43/0.67) = 2.90 Calculate the total heat required in the second case. The ratio (heat...
Sunday, October 10, 2010 at 6:30pm by drwls

physics
a +35x10^-6 C point charge is placed 32 cm from an identical +32x10^-6 C charge. how much work would be required to move a +50.0x10^-6 C test charge from a point midway between them to a point 12 cm closer to either of the charges? please show work.
Friday, February 22, 2008 at 3:32pm by leesa

Physics
How much work is done in lifting a 6kg object from the ground to a height of 4m? A 12n object is lifted 5m how much work is done How much work is done if a 5n object is lifted from the ground to a height of 8m? How much gravitational potential energy does the object gain?
Friday, March 28, 2014 at 4:04pm by Derrick

calculus
Eight and one-half foot-pounds of work is required to compress a spring 3 inches from its natural length. Find the work required to compress the spring an additional one-half inch. (Round your answer to two decimal places.)
Wednesday, January 25, 2012 at 11:26pm by fgm

Physics
A box with a mass of 5 kg is lifted (at constant velocity) to a height of 3 m to place it on the shelf of a closet. How much work was required to lift the box to this position?
Thursday, February 10, 2011 at 7:37pm by Alex

calculus 2
Six and one-half foot-pounds of work is required to compress a spring 3 inches from its natural length. Find the work required to compress the spring an additional one-half inch.
Tuesday, May 31, 2011 at 5:55pm by brittney

Physics
Let a be the separation. I do not understand your 1×10−10 {\rm } notation for a Bringing in the first electron requires no work. Bringing in the second electron required k^e^2/a Bringing in the third electron requires 2ke^2/a The total work required is 3 k e^2/a k is the ...
Saturday, February 5, 2011 at 9:45pm by drwls

Physics
A spring has a spring constant of 42 N/m. How much work is required to stretch the spring 1.5 cm from its equilibrium position?
Tuesday, October 4, 2011 at 6:05pm by Kels

physics
A merry-go-round of mass 1640kg has a radius of 7.5m. How much work is required to accelerate it from rest to a rotation rate of 1 rev. per 8 seconds? (assume a solid cylinder) /
Tuesday, March 29, 2011 at 7:35pm by Mark

physics
The vertical rise is H = 57 sin 35 meters. The work required to raise the skier that amount is M g H. It does not depend upon the speed, although the required power does.
Wednesday, January 5, 2011 at 10:28pm by drwls

physics
A spring has a spring constant of 25N/m . Part A How much work is required to stretch the spring 2.0cm from its equilibrium position?
Thursday, October 17, 2013 at 3:02pm by Lidia

Physics
A spring has a spring constant of 25N/m . Part A How much work is required to stretch the spring 2.0cm from its equilibrium position?
Thursday, October 17, 2013 at 9:06pm by Mike

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