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Work and Energy
Page 9
Questions (3,220)
A father pushes horizontally on his daughter's sled to move it up a snowy incline, as illustrated in the figure, with h = 3.9 m
7 answers
asked by
Sandi
2,853 views
At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0-kg
4 answers
asked by
ajo
1,663 views
A cylinder with a moving piston expands from an initial volume of 0.350L against an external pressure of 2.70atm . The expansion
4 answers
asked by
samantha
2,433 views
You are unloading a refrigerator from a delivery van. The ramp on the van is 5.0m long and its top end is 1.4m above the ground.
4 answers
asked by
Dane
2,382 views
A team of dogs drags a 151 kg sled 0.863 km over a horizontal surface at a constant speed. The coefficient of friction between
3 answers
asked by
Emeera
652 views
A car with mass m require 5.0 KJ of work to move from rest to a final spee v. If this sam amount of work is performed during the
5 answers
asked by
Cristiao
2,183 views
The drawing shows a boat being pulled by two locomotives through a canal of length 2.50 km. The tension in each cable is 5.00
4 answers
asked by
ash
3,106 views
What work is done when 6.0 C is moved through an electric potential difference of 1.5 V?
4 answers
asked by
Anonymous
1,235 views
What is the work done in lifting 60 kg of blocks to a height of 20m?
4 answers
asked by
scooby
2,373 views
70 J of work are done on the gas in the process shown in the figure.
What is V_f in cm^3 ? I have a graph but I can't post it
4 answers
asked by
Ana
1,561 views
Calculate the work done by planet X on its moon.
Planet X applies a force of 5.6 x 10^10 N on its moon and the moon is 4.0 x 10^8
4 answers
asked by
Marty
2,757 views
A 50.0-kg student climbs a 5.00-m-long rope and stops at the top. (a) What must her average speed be in order to match the power
4 answers
asked by
Kelly
4,755 views
calculate the work done if a force of 10N applied at an angle of 30 0degree to the horizontal moves the body through a distance
4 answers
asked by
CEO
806 views
A force of F = 125 N is used to drag a crate 3.0 m across a floor. The force is directed at an angle upward from the crate so
4 answers
asked by
mssailormouth
1,602 views
A car of mass 0.9 tonnes is driven 200 m up a slope inclined at 5° to the horizontal. There is a resistance force of 100 N.
(i)
4 answers
asked by
Autumn
1,051 views
A weightlifter raises a 200 kg barbell over his head from the floor a displacement of 2m in 2.2 seconds. What is the average
4 answers
asked by
Anonymous
2,977 views
A 2.20 kg pendulum starts from a height of 5.00m. It swings back and forth through one whole oscillation but only returns to a
4 answers
asked by
Tyger2020
1,308 views
A tank in the shape of a right circular cylinder is filled with water (62.5 lb/ft3). It has a height of 8 ft and a diameter of
4 answers
asked by
ANON
3,694 views
A skier of mass 110 kg travels down a frictionless ski trial. a.) If the top of the trail is a height 200m above the bottom,
4 answers
asked by
Jessica
2,117 views
The two ropes shown in the bird's-eye view of (Figure 1) are used to drag a crate 3.7 m across the floor. How much work is done
4 answers
asked by
Tommy
2,223 views
A 5.40 Kg package slides 1.47 meters down a long ramp that is inclined at 11.6 degress below the horizontal. The coefficient of
4 answers
asked by
clariza gonzalez
2,493 views
A boy pushes a book by applying a force of 40N.Find the work done by the force ,if the book is displaced by 25cm along the path.
6 answers
asked by
Anonymous
3,041 views
What is the minimum work needed to push a 950 kg car 890 m up along a 8.0 degree incline? Assume the effective coefficient of
4 answers
asked by
Luke
1,104 views
A small electric motor is used to lift a
0.50-kilogram mass at constant speed. If the mass is lifted a vertical distance of 1.5
4 answers
asked by
ashley --- HELP PLEASEE!!!
4,615 views
A skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at
4 answers
asked by
Otto
1,948 views
A tennis player hits a 58.0g tennis ball so that it goes straight up and reaches a maximum height of 6.17m.
How much work does
4 answers
asked by
Carmen
1,545 views
A block of weight w = 35.0 N sits on a frictionless inclined plane, which makes an angle theta = 27.0 degrees with respect to
4 answers
asked by
Anonymous
1,679 views
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
4 answers
asked by
Tammy
4,056 views
How much work does a 64 kg person do against gravity in walking up a trail that gains 760 m in elevation?
4 answers
asked by
yanna
1,076 views
Water is lifted out of a well 30.0m deep by a motor rated at 1.00hp. Assuming 90% efficiency, how many kilograms of water can be
4 answers
asked by
Kayla
2,460 views
A 20 meter long steel cable has density 2 kg per meter. It is hanging straight down. There is a 100 kg bucket of concrete
4 answers
asked by
Andre
1,338 views
the second floor of a house is 6m above street level. How much work is required to lift a 300-kg refrigerator to the
4 answers
asked by
Anonymous
3,885 views
A car of mass 550 kg is moving at a speed of 1.5 m/s. A man pushes the car, increasing the speed to 3.2 m/s. How much work did
4 answers
asked by
meriyhome
3,553 views
How much work is needed to push a 142- kg packing crate a distance of 2.45 m up an inclined plane that makes an angle of 20 o
4 answers
asked by
Steve
1,625 views
Starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the water and reaches a speed of
4 answers
asked by
Ed
1,372 views
I need to know what equations to use!
(A)How much work is done moving a 2.0Kg book to a shelf 2.00m high? (B) What is the change
4 answers
asked by
Totally Lost!!
1,105 views
Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the
4 answers
asked by
Cameron
2,981 views
A machine raises a load of 600N through a height of 1.5m when an effort of 100N moves a total distance of 20m.(a) calculate the
4 answers
asked by
Anonymous
1,268 views
A 60 kg is pushed 12m across a horizontal floor by a horizontal force of 200N. The coefficient of kinetic friction is 0.3. How
4 answers
asked by
Ali
2,053 views
a man raises a mass,m to a height ,h and then shifts it horizontally over a distance ,x. find the total work done against the
4 answers
asked by
jaggu
2,201 views
A spring with spring constant of 30 N/m is stretched 0.19 m from its equilibrium position. How much work must be done to stretch
4 answers
asked by
Kaylee
1,712 views
A force of 1.24 N pushes against an object with a mass of 0.16 kg for 4.00 min. The object does not move. What is the work done
4 answers
asked by
Sam
681 views
A hardworking ant must supply 0.00955 N to pull a small piece of fruit at constant velocity over a distance of 8.60 cm up a
3 answers
asked by
Anonymous
737 views
An 8 kg ball is moving at 4 m/s. Work is done on the ball to give it a speed of 12 m/s. What is the ball's initial kinetic
5 answers
asked by
Jai
1,588 views
a battery of 12v supplies a charge of 1000C to an electric device. how much work is done by the battery in moving the charge?
4 answers
asked by
aisha
1,792 views
How much work is done by a person lifting a 2 kg object from a bottom of a well at constant speed of 2 m\ s for 5 sec
4 answers
asked by
Q16
3,607 views
A 5.8 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.57 m above the
4 answers
asked by
vanessa
1,825 views
A piston has an external pressure of 9.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to
4 answers
asked by
Yuli
5,964 views
A 34-pound crate is pushed across the floor by
a 30-pound horizontal force F1. Aside from the pushing force and gravity F2, there
4 answers
asked by
Mochool
5,052 views
Find the work done by a force F of 30 pounds acting in the direction (2,3) in moving an object 3 feet from (0,0) to the point in
6 answers
asked by
Em
3,813 views
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