ICSE X Physics Work, Energy and Power
29h ques
29h ques
Asked by lovemaan5500
27th December 2017
1:35 PM
Answered by Expert
ICSE X Physics
Write the expression for the work done by constant force acting on a body, which gets displaced from its initial position in a direction different from the direction of force
Asked by Aditya
14th March 2018
11:33 PM
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ICSE X Physics
What should be the angle bw the force and displacement to get the minimum work
Asked by lovemaan5500
15th March 2018
7:30 AM
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NEET1 NEET1 Physics
A partile of mass 500g is moving in a circle of radius 1m with speed v (m/s) = 4t^2. The rate of work done on the particle at t = 2s is ?
Asked by dipanshusingla029
3rd April 2018
5:46 PM
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NEET1 NEET1 Chemistry
A system has internal energy equal to U1 600J of work is done on the system when 450 J of heat is lost. The final energy of system is_________________________. for this.. the formula is U=Q+W OR Q=U+W
Asked by imtiyazmulla68
2nd May 2018
7:49 PM
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ICSE VIII Maths
Ten pipes of the same type are required to fill a tank in 24 min.If two pipes go out of order ,how long will the remaining pipes take to fill the tank?
Asked by nathsantanukumar
9th May 2018
5:23 PM
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CBSE XII Science Physics
can you move a charge in an electric field without work done and how?
Asked by my3shyll
9th May 2018
10:59 PM
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CBSE XII Science Physics
Two charges +q and -q are located at points A [0,0,-a] and B [0,0,+a] respectively. How much work is done in moving a test charge from point P [7,0,0] to Q [-3,0,0] ?
Asked by pardeepkumar2281
9th May 2018
11:08 PM
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CBSE XII Science Physics
i don`t understand why it is no work done in moving a charge in equipotential surface? in order to move a charge in an equipotential surface we should apply some force right? does it account for work? why is the work done is zero?
Asked by my3shyll
11th May 2018
6:59 PM
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ICSE IX Physics
A 50kg man with 20kg load on his head climbs up 20 steps of 0.25m height each.The work done on climbing is?
Asked by girishbiswal
21st May 2018
7:29 PM
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ICSE X Physics
a horizontal force of 0.5 Newton moves a body of mass 2 kg initially at rest on a smooth table find the work done by the force in 8 second and show that this equals the change in Kinetic energy of body
Asked by Samrat
29th June 2018
10:13 PM
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ICSE X Physics
A 200 kg cart is pulled slowly up an incline how much work is done by pulling force in moving the object up to a point 2.5 M vertically above the starting point
Asked by Samrat
29th June 2018
10:20 PM
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ICSE X Physics
A bullet of mass 2g from moves with a velocity of the 300 metre per second it strikes a tree and penetrate to a depth of 5 cm before coming to rest what is the change in the bullets kinetic energy how much work does the tree do on the bullet what is the average retarding force of bullet
Asked by Samrat
29th June 2018
10:24 PM
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ICSE X Physics
A block of mass of 4 kg is drawn at a constant speed a distance of 5m along a horizontal Floor by a rope exerting a constant force of 10 Newton making an angle of 60° with the horizontal find the total work done on the block and the work done by the rope on the block
Asked by Samrat
30th June 2018
7:05 PM
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ICSE X Physics
A machine is driven by a 100 kg mass that falls 8 m in 4 seconds it lifts a load of 500 kg vertically upwards a.what is the force in Newton exerted by falling mass b.what is the work done by 100 kg mass falling through 8 m c. what is the power input to the machine d. If the efficiency of the machine 75% what is the power output of the machine e.what is the work done by the machine in 4 sec
Asked by Samrat
30th June 2018
7:24 PM
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ICSE X Physics
A man loses a 2.5 M long crowbar to raise a 100 kg mass such that load arm is 0.5 CM the distance moved by the effort is 0.1 M find a.effort needed to lift a load B. Mechanical advantage of crowbar c.the work done by the effort d.distance the load is raised e.the work done on the Load f. the efficiency of the crowbar
Asked by Samrat
30th June 2018
9:10 PM
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ICSE X Physics
An electric motor of power 125 w is switched on for 1 minute 40 second if 75% of energy of motor is useful then find useful work done b.load lifted by it through the height of 4 m
Asked by Samrat
30th June 2018
9:28 PM
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NEET1 NEET1 Physics
A body of mass 2 kg initially at rest is moved by a horizontal force of 0.5 N on a smooth table . The work done by the force in 8 second
Asked by parveenhooda2341
18th July 2018
9:18 AM
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CBSE XII Science Physics
A tank of height 5m is completely filled with water. work done to empty a tank to one fourth of its depth such that initial mass of water in tank is 50 kg is.
Asked by sbtech357
22nd July 2018
3:50 PM
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ICSE VIII Maths
Diwakar can do a work in 8 1/2 days. After Diwakar worked for 2 days, Bhaskar joined. They worked for one day. The capacity of Bhaskar is double the capacity of Diwakar.On the 4th day, the work is completed by both with the help of Harsha. In howmany dayscould Harsha alone do the work?
Asked by nathsantanukumar
10th August 2018
7:28 AM
Answered by Expert
JEE Plances JEE (Main) Physics
A man places a chain of mass m and length l on a table slowly .initially the lower end of the chain just touches the table ,the man drops the chain when half of the chain is in vertical position then work done by the man in this process is
Asked by m.nilu
20th August 2018
7:51 PM
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CBSE XII Science Physics
Three charges of q,3q, and -2q are placed at the vertices of an equilateral triangle of side 20cm. If q is 2 microcoulomb, what work must be done to dissociate this system of charge?
Asked by lekhakarthikeyan
21st August 2018
10:05 PM
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ICSE VIII Physics
compare the work done and power of pallavi and parul when both of them can lift the same bag of 20kg to a height of 50cm. in 2and 5 seconds respectively(Take g=10ms-2)
Asked by sujanasudheer37
10th September 2018
10:17 PM
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JEE Plances JEE (Main) Physics
If a spring mass system is placed on a horizontal smooth surface. Then find the net work done by spring force after one time period(assume suitable variables)
Asked by Pjdrd24680
15th September 2018
8:06 AM
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ICSE X Physics
Person coming down by lift or slope or stairs. Which case work done is more and why?
Asked by biplabkanti71
16th September 2018
8:15 AM
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ICSE VIII Maths
If 15 men can do a job in 24 days,in how many days will 40 men complete the same job?
Asked by lucy
19th September 2018
9:55 PM
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ICSE X Maths
A can do a piece of work in 'x' days and B can do the same work in (x+16)days . If both working togather can do it in 15 days;calculate 'x'.
Asked by hermanlakra93
23rd September 2018
6:33 PM
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ICSE VI Maths
If 8 people take 1 hour to load 5760 bricks on a truck, how long would it take 6 people to load 5760 bricks on the truck
Asked by nikitasuresh0
24th September 2018
9:48 PM
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CBSE XI Science Physics
Q. Derive an expression of work done in making a body of mass 'm' free from earth's gravitational field. Using the result, obtain an expression of escape velocity. Also show escape velocity depends only on the density of the planet of a given size.
Asked by neerajprataphazarika
24th September 2018
10:50 PM
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CBSE XI Science Physics
Q.Derive an expression of elastic strain energy gained by a stretched wire. What happens to this energy when deforming force is withdrawn? State hooke's law and represent it graphically.
Asked by neerajprataphazarika
24th September 2018
10:52 PM
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ICSE XI Science Physics
1st numerical plz
Asked by lovemaan5500
29th September 2018
8:54 PM
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CBSE XII Science Physics
Derive an expression for work in rotating dipole use it to find formula for energy of the dipole. What is the stable position of dipole in the field?
Asked by 342849142950171
1st October 2018
1:13 AM
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CBSE XII Science Physics
Shouldn't it be 8 - 3.5 = 4.5 ?
Asked by jay7venture
6th October 2018
8:55 PM
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JEE Plances JEE (Main) Physics
the velocity of a moving particle varies with distance moved as v=3+4x .if the mass of the particle is 2kg determine the work done.on the particle during the time its displacement changes from x=1 to x=2m.
Asked by Amitamit1ganga2
15th October 2018
6:54 AM
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CBSE IX Physics
A body of mass 250 kg is lifted 5 meters above the ground. Calculate th work done by it
Asked by ranendrachandrabhattacharjee
7th November 2018
9:34 AM
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ICSE IX Physics
How work done = difference between k.e
Asked by swainanirudha1
12th November 2018
11:52 PM
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CBSE IX Physics
a block of mass 5 kg is allowed to fall from certain height. Find the work done by gravity in one second after the block is dropped
Asked by prachiverma302003
8th December 2018
8:38 PM
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CBSE IX Physics
What is the work done by a man in carrying a suitcase weighing 30 kg over his head, when he travels a distance of 10 m in the (i) vertical direction (ii) horizontal direction.
Asked by swainanirudha1
21st December 2018
6:28 AM
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CBSE ALL Class ALL Subject
a load 500 kg is lifted from the bottom of a 100 M deep shaft using a rope which wait 1 kg per metre find the total amount of work done
Asked by swainanirudha1
21st December 2018
1:37 PM
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ICSE X Physics
Please explain the theory in the image.
Asked by kandappan
30th December 2018
9:15 AM
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CBSE X Maths
Shush and Komal can do a job together in 7 days. Shush is 7/4 times as efficient as Komal. The same job can be done by Shush alone in
Asked by rushabhjain.a
31st January 2019
9:46 AM
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JEE Main Physics Work, Energy and Power
A body is displaced by 20 m, when a force of 20N acts on the body. The work done is
Asked by Reetusahrey
7th February 2019
7:36 PM
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ICSE X Physics
An object p of mass m
Asked by alam.ehtesham02
16th February 2019
8:21 PM
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ICSE X Physics
orce is applied on a body of mass 20 kg moving with a velocity of 40 ms-1. The body attains a velocity of 50 ms-1in 2 seconds. Calculate the work done by the body. orce is applied on a body of mass 20 kg moving with a velocity of 40 ms-1. The body attains a velocity of 50 ms-1in 2 seconds. Calculate the work done by the body. orce is applied on a body of mass 20 kg moving with a velocity of 40 ms-1. The body attains a velocity of 50 ms-1in 2 seconds. Calculate the work done by the body.
Asked by senank123
18th February 2019
12:21 PM
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ICSE X Physics Work, Energy and Power
A force is applied on a body of mass 20kg moving with a velocity of 40m/S .The body attains a velocity of 50 m/s in 2s.calculate the work done by the body.
Asked by Mail.nehasharmaa
19th February 2019
10:13 AM
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CBSE IX Physics Work and Energy
How is potential energy affected when work done by a body and when work done on a body
Asked by saradamahapatra9999
19th February 2019
10:43 AM
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CBSE XII Science Physics
An infinitely large thin plane sheet has an uniform surface charge density +σ . Obtain the expression for the amount of work done in bringing a point charge q from infinity to a point distance r in front of the charged plane sheet.
Asked by ritikabehera01
4th March 2019
12:19 AM
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ICSE X Physics Work, Energy and Power
What is the work done when force acts at an angle in the direction of motion
Asked by Shalluchhabra
11th March 2019
10:11 PM
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NEET NEET Physics Thermodynamics
A diatomic gas undergoes a process represented by PV^1.3=constant. Choose the incorrect statement-(1)The gas expands by absorbing heat from the surroundings, (2) The gas cools down during expansion, (3) The work done by surroundings during expansion of the gas is negative, (4) None of these
Asked by patra04011965
18th March 2019
10:55 PM
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CBSE XII Science Physics
Prove that work done by an electric field in path independent
Asked by elizabethcordilia1997
4th April 2019
9:07 PM
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CBSE XII Science Physics
Please answer this question.
Asked by dineshchem108
19th April 2019
11:21 AM
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CBSE XII Science Physics
Tell o tell
Asked by jain.pradeep
24th April 2019
1:44 AM
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ICSE VII Maths Algebraic Expressions
The wages of 10 workers for a six days week are ₹ 1200. What are the one day wages : ¡ ) of one worker ? ¡¡) of 4 workers ?
Asked by garganimesh786
29th April 2019
5:49 PM
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ICSE X Physics
A body of mass 500g moving with 10ms^-1, increases to 20ms^-1 when acted upon a force.Find (i) the chane on Kinetic Energy (ii) the work done by the foorce (iii) name the theorem based on the same
Asked by rsankit1221
11th July 2019
9:35 PM
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ICSE IX Physics
why is work done on an object moving with uniform circular motion zero
Asked by niketansorte1092005
5th August 2019
8:44 PM
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ICSE XII Science Physics
Two points P and Q are maintained at the potentials of 10v and - 4v respectively .what the work done on moving 100 electrons from P to Q ?
Asked by hasnain.hossain121
6th August 2019
9:45 PM
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CBSE XI Science Physics
Please explain the work done by a variable force.
Asked by kandappan
9th August 2019
6:07 AM
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CBSE XII Science Physics
an electric dipole is placed in a uniform electric field vector E with its dipole moment vector P parallel to the field . Find 1) the work done in turning the dipole till its dipole moment points in the direction opposite to vector E.
Asked by kothattil439
13th August 2019
9:21 PM
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NEET NEET Physics
0.5 mole of a diatomic gas at 27°C is heated at constant pressure so that its volume is trebled. If R=8.3 J/mol-K then the work done is
Asked by gvr20689
18th August 2019
9:55 PM
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CBSE XII Science Physics Electrostatic Potential and Capacitance
Please solve Q no 69 Given ans option 3
Asked by Nishantthakre95
11th September 2019
12:22 PM
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CBSE IX Physics Work and Energy
A force of 40 Newton acts on a object at an angle of 45 degree with horizontal as a result the object is displaced horizontally through a distance of 14 metres calculate the work done by the force on an object
Asked by Rakhiuppal1982
21st September 2019
8:31 PM
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JEE Main Physics
Work done against the gravity by taking a 10kg block to height 1m in 1sec will be?here why we take external force equal to mg
Asked by ashutosharnold1998
28th September 2019
9:58 PM
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JEE Main Physics
Which of the following statement is incorrect about conservative field?i have doubt in option one.work done by conservative field is equal to change in potential energy then how option one is correct where in place of potential energy ,kinetic energy is written
Asked by ashutosharnold1998
30th September 2019
1:47 PM
Answered by Expert
CBSE XI Science Physics
Calculate the work done in raising a stone of mass 6 kg of specific gravity to emerge in water from a depth of 4m to 1m below the surface of water
Asked by PalakSrivastava15062003
5th October 2019
1:05 PM
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CBSE IX Physics Work and Energy
in displacing a body 5 metre by a force of 50 Newton the work done is 125 joule find out the angle between the direction of force and displacement
Asked by karanbora625
11th November 2019
7:12 PM
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NEET NEET Physics
⭕ Help me in this question...Thanks☺️ ↪️Refer to attachment ↩️
Asked by jhajuhi19
20th November 2019
6:56 AM
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ICSE X Physics Work, Energy and Power
Is derivation for w=FScos90
Asked by aditigupta1443
17th December 2019
11:33 AM
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CBSE XI Science Physics
What do you mean by work done give it SI unit and dimension formula.
Asked by shubvrma8081
17th December 2019
10:58 PM
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ICSE X Physics
Machine left side of 200 kg in vertically upward direction if the machine is driven by freely falling mass of 40 kg through a distance of 8 metre in 4 second calculate force exerted by falling mass work done by falling mass power input of machine power output of machine if its efficiency is 75%
Asked by saritamehta3010980
23rd January 2020
1:24 PM
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NEET NEET Physics
please answer this
Asked by Prashant DIGHE
29th January 2020
10:22 PM
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CBSE XI Science Physics
Write down the expression for workdone in the extension of wire.
Asked by sompradhan37
21st February 2020
9:12 PM
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CBSE XI Science Physics
please answer this
Asked by Prashant DIGHE
4th March 2020
10:03 PM
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NEET NEET Physics
Work done when an object goes up on a rough inclined plane with explanation . How Frictional force is added up in this case??
Asked by vijaygireesh
3rd April 2020
9:56 PM
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ICSE X Physics Work, Energy and Power
physics
Asked by pankajkrpal178
25th April 2020
4:34 PM
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ICSE X Physics Work, Energy and Power
Derivation of w=mgh
Asked by sanjeevrao.2704
4th June 2020
8:43 AM
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CBSE XI Science Physics Work, Energy and Power
please solve the attached problem
Asked by ayushmishradbb
11th June 2020
9:07 AM
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CBSE IX Physics Work and Energy
Work done does not depend on the distance travelled. Give reason.
Asked by Deepak
6th July 2020
6:23 PM
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CBSE XI Science Physics
a bead of mass M is constrained along elliptical wireframe in the horizontal plane the equation of the article frame is given by x is equal to 2 x cos theta and Y is equal to a sin theta the work done by a force f is equal to K Poorna square are cap is moving The Beat from point a to point B is alpha ke upon to a the value of Alpha is
Asked by padmayera
31st August 2020
4:54 PM
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CBSE IX Physics
Why only cos titta is used in work why other trigonometry identities are not used???
Asked by kruthikalakshmim
21st October 2020
6:02 PM
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ICSE XI Science Physics
A man weighing 70 kg carries a 30 kg box to the top of a building 20 m high . Calculate the work done by the man .
Asked by Chaudharidc009
3rd January 2021
8:29 PM
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ICSE X Physics Work, Energy and Power
a coolie with a load of 30kg on his head, walks on the platform. if he walks a distance of 60m what is the work done by the coolie? how much energy is gained by a box of mass 20kg when a man runs carrying the box with a speed of 3m/s to catch the bus? what is the difference in the answers in these two questions? is the meaning the same, please explain.
Asked by saibaba1069
2nd April 2021
8:40 PM
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JEE Main Physics Electrostatics
Workdone
Asked by pottavarthiprashanthkumar
11th May 2021
1:03 PM
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CBSE X Physics Electricity
what is potential difference?
Asked by chetnakanojia9311
21st May 2021
10:46 PM
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CBSE VIII Maths Comparing Quantities
If 3 men or 4 women can do a piece of work in 43 days how long will 7 men and 5 women take to complete the same work ?
Asked by ekanshbisht107
31st August 2021
10:23 AM
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ICSE IX Physics Work and Energy
Why is work a scalar quantity ?
Asked by Deepak
1st October 2021
12:02 PM
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CBSE IX Physics Work and Energy
A car of mass 2 kg is moving with speed of 10m/s. Calculate work done to stop it ?
Asked by atiquzzaman100
21st October 2021
1:35 PM
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ICSE X Physics Work, Energy and Power
when the force is acted normally to the body then the workdone will be __________
Asked by diahant.taunk10
24th November 2021
8:46 AM
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NEET NEET Physics Thermodynamics
.
Asked by prince11230sharma
13th January 2022
6:37 PM
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CBSE IX Physics Work and Energy
an object thrown at a certain angle to the ground moves in a second path and falls back to the ground the initial and the final point of the path of the object lies on the same horizontal line what is the work done by the force of gravity on the object?
Asked by aartilodhi13
2nd February 2022
5:18 PM
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CBSE XI Science Physics Thermal Properties of Matter
Heat is added to 10^3 cubic cm of water at atmospheric pressure. The water's temperature increases by 50 degrees celsius. Find (a) the work done by the water as it expands (b) the increase in water's internal energy.
Asked by arjunsah797
1st March 2022
3:01 PM
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CBSE XI Science Physics Work, Energy and Power
when we push the car,workdineyis 0,how
Asked by vaniimtiyaz630
12th May 2022
12:19 AM
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CBSE XII Science Physics Electrostatic Potential and Capacitance
the work done is moving charge of 2c across two point having a potential difference of 12volt
Asked by tahseenaamir07
25th June 2022
1:33 AM
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JEE Main Physics Electromagnetic Induction and Alternating Currents
Magnetic force
Asked by swayamagarwal2114
17th July 2022
12:04 PM
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CBSE XI Science Physics Work, Energy and Power
During calculation of acceleration due to gravity above the surface of earth if we assume that there is an external force opposite to that of Earth's gravity then the cos angle will be 180 between the two forces which is negative(-1), if we put the value in the equation of dw = F.dx then the final value of potential energy is positive which is not possible.how and why??
Asked by anushkaverma.25707
24th August 2023
7:35 PM
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CBSE XI Science Physics Work, Energy and Power
mention the expression for work done
Asked by abdulkhadirchajjo549
6th December 2023
6:55 PM
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NEET NEET Physics Work, Energy and Power
physics doubt
Asked by adeshkulshrestha12
30th December 2023
8:38 PM
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CBSE IX Physics Work and Energy
calculate the amount of work required to stop a car of 1000kg moving with speed of 72km/h
Asked by sadhanaasadhanaa67
4th February 2024
12:27 PM
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CBSE XI Science Physics Physical World
a particle is displaced (3i + 4j) from (3j - 2k) under the action of force (i - j+k)N. the workdone by the force is ______ joule
Asked by vaddevenkatesulu56
26th February 2024
9:02 PM
Answered by Expert
ICSE X Physics Work, Energy and Power
Assertion (A): In real and Ideal conditions, work done by a mass tied at the end of a string, rotating uniformly in a circle, is zero. Reason (R): Work done is never zero in vacuum conditions. (a) Both (A) and (R) are true and (R) is the correct explanation of (A). (b) Both (A) and (R) are true but (R) is not the correct explanation of (A). (c) (A) is true but (R) is false. (d) Both (A) and (R) are false.
Asked by navycuber2738
29th February 2024
2:14 PM
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JEE Main Physics Work, Energy and Power
The work done in moving a body of mass m up an inclined plane of inclination θ to the horizontal, height h and length l ( no friction ) are related as
Asked by sarthakbhoskar7630
5th March 2024
7:03 PM
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JEE Main Physics Work, Energy and Power
Help me
Asked by nandichandi33
24th March 2024
9:21 PM
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