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Work and Energy
Page 7
Questions (3,219)
You push down on a 3 N box for 10 Minutes. How much work was done?
5 answers
asked by
tyd
10,847 views
A spring with a force constant of 4.5×104 N/m is initially at its equilibrium length. How much work must you do to stretch the
7 answers
asked by
Franky
4,293 views
A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the
4 answers
asked by
Jamie
7,984 views
Suppose in the figure blow that +1.00 103 J of work is done by the force F with arrow (magnitude = 30.0 N) in moving the
5 answers
asked by
Anon
2,452 views
A 54 kg box is being pushed a distance of 7.0 m across the floor by a force P whose magnitude is 153 N. The force P is parallel
4 answers
asked by
Brandon
4,796 views
A 380- piano slides 3.8 down a 22 incline and is kept from accelerating by a man who is pushing back on it parallel to the
4 answers
asked by
Anonymous
9,669 views
A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving
6 answers
asked by
Anonymous
17,817 views
A 32.0kg crate is initially moving with a velocity that has magnitude 3.92m/s in a direction 37.0 ∘ west of north.How much
5 answers
asked by
Anonymous
4,493 views
A body is displaced through a certain distance X by a force of 30N. If the work done is 100J and the displacement is in the
5 answers
asked by
GBOROGEN
1,349 views
A drum of mass 100kg is rolled into the deck of a lorry 1.5m above a horizontal floor using a plank 4m long. Calculate the work
7 answers
asked by
Anonymous
1,441 views
Sally applies a total force of 71 N with a rope
to drag a wooden crate of mass 100 kg across a floor with a constant acceleration
4 answers
asked by
Jacob
2,483 views
A 59 g particle is moving to the left at 29 m/s. How much net work must be done on the particle to cause it to move to the right
5 answers
asked by
Haley
8,222 views
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between
4 answers
asked by
Dee
6,932 views
Early one October, you go to a pumpkin patch to select your Halloween pumpkin. You lift the 2.8 kg pumpkin to a height of 1.4 m,
5 answers
asked by
Alan
4,051 views
A block is pushed 2m along a fixed horizontal surface by a horizontal force of 2N. The opposing force of friction is 0.4N. How
4 answers
asked by
Queenesther
1,103 views
A man lifts a 21.1 kg bucket from a well and does 3.1 kJ of work. How deep is the well? Assume that the man lifts the bucket at
5 answers
asked by
Julia
4,431 views
Assume the distance axis is linear and da = 10.0m and db = 35.0 m. Estimate the work done by a force F in moving a 2.80 kg
5 answers
asked by
Arianne
3,170 views
A trunk of mass m = 1.100 kg is pushed a distance d = 32.0 cm up an incline with an angle of inclination theta = 26.0 ° by a
4 answers
asked by
Steeve
3,250 views
a magnetic crane left a mass 1500 through a vertical height of 40m.calculate the work done in operating the crane
7 answers
asked by
sasi
3,712 views
A tow truck pulls a car 5.00km along a horizontal roadway using a cable having tension of 850N (a) how much work does the cable
4 answers
asked by
Goyong
5,546 views
A bullet of mass 0.010 kg and speed of 100 m/s is brought to rest in a wooden block after penetrating a distance of 0.10 m. The
7 answers
asked by
mssailormouth
4,184 views
Suppose that 5 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 36 cm.
(a) How much work
6 answers
asked by
Kaitlyn
12,264 views
Karen has a mass of 52.7 kg as she rides
the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a
4 answers
asked by
Mike
2,824 views
What mechanical work must you do to lift a uniform log that is 3.3m long and has a mass of 100kg from the horizontal to a
4 answers
asked by
help me please
2,031 views
A block of ice of mass 4.10 kg is placed against a horizontal spring that has force constant k = 210 N/m and is compressed a
7 answers
asked by
ami
6,345 views
Calculate the work done by a stone mason lifting a stone of mass 15kg through a height of 2m.Take g=10N/Kg
5 answers
asked by
Peter
1,660 views
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
5 answers
asked by
Tim
3,760 views
If a 2.0-kilogram mass is raised 0.050 meter vertically, the work done on the mass is approximately
(1) 0.10 J (2) 0.98 J (3) 9.8
7 answers
asked by
Bishketta
4,101 views
A trough is 9 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of
4 answers
asked by
Catherine
8,666 views
A 50-kg block is pushed a distance of 5.0 m across a floor by a horizontal force Fp whose magnitude is 150 N. Fp is parallel to
4 answers
asked by
Amy
4,674 views
If a boat and its riders have a mass of 800 kg and the boat drifts in at 1.5 m/s how much work does Sam do to stop it?
5 answers
asked by
sam
3,792 views
A crate of fruit with a mass of 37.5 kg and a specific heat capacity of 3800 J/(kg⋅K) slides 7.60 m down a ramp inclined at an
5 answers
asked by
Physics
5,268 views
Starting from rest, a 1.7x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts
2 answers
asked by
Hannah
805 views
A weight lifter lifts a 200 kg barbell from the floor to a position directly over his head 2.5 meters. How much work did he do?
4 answers
asked by
Mason
3,273 views
You are a member of an alpine rescue team and must get a box of supplies, with mass 3.00kg , up an incline of constant slope
4 answers
asked by
HELP
6,895 views
Sau-Lan has a mass of 47 kg. She rides the up escalator at Ocean Park in Hong Kong. This is the world's longest escalator, with
4 answers
asked by
Iklishi
2,697 views
How much work (in J) is required to expand the volume of a pump from 0.0 L to 2.8 L against an external pressure of 1.2 atm ?
Exp
4 answers
asked by
lea
1,402 views
12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the wagon if it accelerates from rest
5 answers
asked by
silverback - sorry Repost for Damon
2,503 views
A team of dogs drags a 81.2 kg sled 3.12 km over a horizontal surface at a constant speed.The coefficient of friction between
5 answers
asked by
Maria
2,737 views
The (nonconservative) force propelling a 1.50E3 kg car up a mountain road does 4.70E6 j of work on the car. The car starts from
3 answers
asked by
Matoro
2,199 views
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same
4 answers
asked by
Tim
2,721 views
A person pulls a toboggan for a distance of 34.6 m along the snow with a rope directed 29.3 ° above the snow. The tension in
4 answers
asked by
Rob
1,484 views
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.80 * 10^6 N, one 16 degrees west of north and
4 answers
asked by
anonymous
3,263 views
Find work done when 25kg weight lifted to a vertical height of 2m from the ground carrying to the same place by pushing it up
9 answers
asked by
Samarth
7,931 views
a 55 kg skateboarder starts out with a speed of 1.8 m/s. he does +80 J of work on himself by pushing with his feet against the
4 answers
asked by
Justin
3,162 views
The efficiency of a machine is 60℅,find In joules the work done by a student using the machine to rise a load of 150kg through
7 answers
asked by
Lawrence
4,641 views
A tennis player hits a 58.0 g tennis ball so that it goes straight up and reaches a maximum height of 7.02 m .
Part A How much
4 answers
asked by
Jamie
2,554 views
6 J of work is needed to push an object of mass 2 kg from point A to point B of the frictionless inclined plane. If the angle of
4 answers
asked by
Anonymous
2,917 views
Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a θ = 50.0° slope at constant
4 answers
asked by
Karina
7,050 views
Starting from rest, a 4-kg block slides 10 m down a frictionless 30 degree incline. Determine the work done on the block by
a)
5 answers
asked by
Rachel
3,659 views
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