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level: Energy

Questions and Answers List

level questions: Energy

QuestionAnswer
The energy associated with the motion of an object.Kinetic Energy
What is kinetic energy, and what is it associated with?Kinetic energy is the energy associated with the motion of an object.
The amount of energy in an object's kinetic energy store depends on its mass and speed.Factors Affecting Kinetic Energy
What factors determine the amount of energy in an object's kinetic energy store?The amount of energy depends on the object's mass and speed.
The equation to calculate the amount of energy in an object's kinetic energy store:Kinetic Energy Equation
A demonstration of how to calculate kinetic energy using the equation:Example Calculation
Heavier objects have more kinetic energy than lighter objects, assuming the same speed.Relationship Between Mass and Kinetic Energy
How does mass affect kinetic energy, assuming a constant speed?Heavier objects have more kinetic energy than lighter objects.
Faster objects have more kinetic energy than slower objects, assuming the same mass.Relationship Between Speed and Kinetic Energy
How does speed affect kinetic energy, assuming a constant mass?Faster objects have more kinetic energy than slower objects.
The general principle that heavier, faster objects have more kinetic energy than lighter, slower objects.General Principle
What is the general principle regarding kinetic energy?Heavier, faster objects have more kinetic energy than lighter, slower objects.
The energy stored in an object due to its position in a gravitational field.Gravitational Potential Energy (GPE)
What is gravitational potential energy, and what determines its presence in an object?Gravitational potential energy is the energy stored in an object based on its position in a gravitational field.
Objects gain gravitational potential energy when raised above ground level.Gain of Gravitational Potential Energy
When does an object gain gravitational potential energy?Objects gain gravitational potential energy when raised above ground level.
The equation to calculate the energy in an object's gravitational potential energy store:Gravitational Potential Energy Equation
The force exerted per unit mass at a specific location in a gravitational field.Gravitational Field Strength
What is gravitational field strength, and what does it depend on?Gravitational field strength is the force exerted per unit mass and depends on the mass of the planet or celestial body.
On Earth, the gravitational field strength is approximately 10N/kg.Gravitational Field Strength on Earth
What is the gravitational field strength on Earth, and how is it denoted?On Earth, the gravitational field strength is 10N/kg.
A demonstration of how to calculate gravitational potential energy for a 60 kg person jumping 0.4 m upwards on Earth.Example Calculation
The higher an object is above ground level, the more gravitational potential energy it stores.Relationship Between Height and GPE
How does the height above ground level relate to the amount of gravitational potential energy stored?The higher an object is above ground level, the more gravitational potential energy it stores.
The process in which energy is transferred to less useful energy stores.Energy Dissipation
What is energy dissipation, and where does the energy end up?Energy dissipation is the transfer of energy to less useful energy stores.
Another term for dissipated energy, referring to energy that is not utilized in a useful way.Wasted Energy
Processes involving the movement of mechanical components or surfaces.Mechanical Processes
What are mechanical processes, and what do they typically involve?Mechanical processes involve the movement of mechanical components or surfaces.
Mechanical processes are considered wasteful when they cause a rise in temperature.Temperature Rise in Mechanical Processes
Why are mechanical processes considered wasteful, and what happens during this wastefulness?Mechanical processes are wasteful when they cause a rise in temperature, leading to the dissipation of energy in heating the surroundings.
Friction between surfaces moving past each other in mechanical processes leads to the dissipation of thermal energy.Friction in Mechanical Processes
What role does friction play in mechanical processes, and what is the consequence?Friction between surfaces moving past each other leads to the dissipation of thermal energy.
Any transformation or process within a system.System Changes
What do we refer to as system changes, and what is a general characteristic of these changes?System changes encompass any transformation or process within a system, and in all of them, some energy is dissipated.