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Conservation of Energy
Page 4
Questions (268)
In preparation for a demonstration on conservation of energy, a professor attaches a 8.7-kg bowling ball to a 3.2-m-long rope.
2 answers
asked by
kelly
723 views
A 0.330-kg block of wood rests on a horizontal frictionless surface and is attached to a spring (also horizontal) with a
3 answers
asked by
HELP!!!
719 views
A 57.5-kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against
1 answer
asked by
Anonymous
690 views
PLEASE SEE ADDITIONAL QUESTION AT BOTTOM.
A pendulum was set up and measurements were made to enable the mechanical energy to be
3 answers
asked by
Sarah
702 views
Can someone help me solve this problem? This example problem will help me solve the actual homework problems
If an 0.6kg apple is
3 answers
asked by
Mariam
683 views
A 33-kg girl is bouncing on a trampoline. During a certain interval after she leaves the
surface of the trampoline, her kinetic
3 answers
asked by
jimmy
653 views
Tarzan (m = 68kg) swings down from a height of 4.8m on a vine to save Jane (m = 35kg) from some hungry hippos. if he gravs jane
2 answers
asked by
y
656 views
A small block of mass m1 = 0.500 kg is released from rest at the top of acurved-shaped frictionless wedge of mass m2 =3.00 kg,
1 answer
asked by
Marie
688 views
As part of a forensic test, a 5.0g lead bullet is fired into a fence post. the initial speed of the bullet is 250 m/s. when it
3 answers
asked by
Alex
666 views
What would be the equation for the conservation of energy if you have only gravitational energy turning into only kinetic energy
1 answer
asked anonymously
13 views
Tarzan is running towards a cliff, ready to swing down rescue Jane from some poisonous snakes, and make it back
up to a tree on
2 answers
asked by
carolyn
607 views
A system gains 473J of kinetic energy while losing 271J of potential energy. The thermal energy increases by 127J .
Use an energy
2 answers
asked by
Allen
579 views
The sun radiates energy at the rate of 3.92x 10^26 W. (a) What is the change in the sun's mass in one second? (b)How much mass
2 answers
asked by
daniela
588 views
a ball of mass 1oog falls from a height of 5m onto a floor and rebounds to a height of 3m . what energy is lost as a result of
2 answers
asked by
antiah
568 views
Tarzan is running towards a cliff, ready to swing down rescue Jane from some poisonous snakes, and make it back
up to a tree on
2 answers
asked by
carolyn
567 views
Determine for each of the following statements whether it is always true or can be false.
In a perfectly inelastic collision, the
2 answers
asked by
Katie
566 views
a farmer drives a 0.100 kg iron spike with a 2.00 kg sledge hammer. the sledge hammer moves at a speed of 3.00 m/s and comes to
2 answers
asked by
tulip
569 views
a bullet is fired into a trunk of a tree losses1/4 kinetic energy in travelling distance of 5cm .before stopping it travels a
2 answers
asked by
vasu
539 views
An automobile having a mass of 1220 kg is driven into a brick wall in a safety test. The bumper behaves like a spring of
3 answers
asked by
Emma
562 views
A 2.00 kg frictionless block is attached to a horizontal spring as shown. At t = 0, the position x = 0.225 m, and the velocity
2 answers
asked by
toby
550 views
A 78 kg volleyball player jumps and leaves the ground with a vertical
velocity of 3.5 m/s. By thinking about the conservation of
4 answers
asked by
josh
535 views
You take your backpack out of the car, hike to the top of a nearby mountain, and return with your backpack to your car at the
2 answers
asked by
may
549 views
1- A mass m is pushed against a spring of spring constant k = 12000 N/m. The mass slides on a horizontal smooth surface except
2 answers
asked by
Maryam
544 views
An arrow is shot by stretching a bow through a distance of 0.9m by applying a force of 150N, the mass of the arrow is 1.7kg.
2 answers
asked by
Muomen
543 views
A 10 kg block slides up a hill to a height of 5.8 m. If 414 J of thermal energy are generated, how fast was the block going at
2 answers
asked by
mas
515 views
A person wants to participate in a bunjee jump. One end of an elastic band 10m long with a spring constant of 50N/m will be
3 answers
asked by
Chris Adison
520 views
A 27-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic
2 answers
asked by
Hannah
535 views
A roller coaster is initially at a height of 40 m above the ground and has an initial velocity of 15 m/s. Using conservation of
2 answers
asked by
Michelle
503 views
An object falls through the air, gaining speed as it falls. A student claims that this creates new energy, and so it breaks the
1 answer
asked by
LLCOOLJ
64 views
A boy weighing 40kg runs at 8.0m/s grabs a rope and swings of level ground. What maximum height does the child reach?
How do I
3 answers
asked by
Steven
499 views
From what height should a car be dropped to gain the same kinetic energy it would have if it were moving horizontally at 95
2 answers
asked by
Mcab
472 views
A ball is dropped from 1.5 m and rebounds to 1.2m. How many times will it bounce before losing 90% of it's energy? I assumed
1 answer
asked by
Mark
460 views
An 91.0 kg in-line skater does 3620 J of nonconservative work by pushing against the ground with his skates. In addition,
2 answers
asked by
Amanda
477 views
A spring with a spring-constant 2.2 N/cm is compressed 28 cm and released. The 4 kg mass skids down the frictional incline of
9 answers
asked by
Mimi
477 views
An electric scooter has a battery capable of supplying 150 Wh of energy. If friction forces and other losses account for 60.0%
1 answer
asked by
Emily Tran
465 views
A toy gun launches a small plastic sphere using a spring. The spring has a spring constanct of 20 J/M^2 and the plastic sphere
2 answers
asked by
GRISSELL
466 views
At the beginning of a roller coaster ride, the car is lifted to the top of a large hill and
released. The speed of the car at the
2 answers
asked by
Angie Need Help ASAP
492 views
(ii) For the wheel of diameter 10 cm, find its final speed after traversing a distance of 10 m down an incline of 25º. Assume
1 answer
asked by
Oisin
447 views
A ball dropped from a height of 10m loses 40% of its energy after impact on ground. How much height will it gain after one
3 answers
asked by
pinki
454 views
The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m
1 answer
asked by
Sandy
452 views
1)Under ideal conditions, if 300 J of work are required tolift a mass to a certain height, the same mass should provide ___ J to
1 answer
asked by
Shardi
450 views
1. Will the swinging wonder ever let 2 ball bearings go in and one ball bearing out with twice the v? Why?
2. A 10.0 kg object
1 answer
asked by
Anonymous
463 views
Question from lab regarding Conservation of Energy
Why doesn't the potential energy of the pulley matter when calculating the
1 answer
asked by
Brad
462 views
1. Using energy consideration and assuming negligible air resistance show that thrown from a bridge 20m above water with an
1 answer
asked by
Meme
446 views
the constant value for speed of light is 3x10to the 7 m/sec. what is the mass equivalent of 100000 N-m of energy
4 answers
asked by
ronald
427 views
A wind sled has a mass of 45kg and is gliding at a speed of 2m/s over the frozen lake with neglible frictional effects. A gust
1 answer
asked by
Belle Jean
455 views
Why is Newton’s cradle (Newton’s balls) described as an “almost-ideal” closed system? Explain your reasoning in one or
1 answer
asked anonymously
112 views
Based on the Law of Conservation of Energy, which of the below is true?(1 point)
Kinetic energy is always equal to potential
1 answer
asked anonymously
33 views
Why is Newton’s cradle (Newton’s balls) described as an “almost-ideal” closed system? Explain your reasoning in one or
1 answer
asked by
random
33 views
An object falls through the air gaining speed as it falls. A student claims that this creates new energy and so it breaks the
1 answer
asked anonymously
27 views
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Parent Categories (26)
Chemistry
Classical mechanics
Collisions
Dynamics
Energy
Energy and Motion
Energy and Work
Energy Transfer
Forces and Motion
Forms of energy
Kinematics
Kinetic Energy
Laws of Energy
Laws of motion
Laws of physics
Laws of Thermodynamics
Mechanical energy
Mechanics
Motion
Particle Physics
Pendulum
Physical Science
Physics
Thermodynamics
Work and Energy
Work, Power, and Energy