All Flashcards
What is a system in physics?
A collection of objects chosen for analysis, treated as having no internal structure for the analysis.
What is a closed system?
A system that does not exchange matter or energy with its surroundings.
What is an open system?
A system that exchanges matter and/or energy with its surroundings.
What is dynamic equilibrium?
Changes occur, but the system returns to equilibrium.
What are quarks?
The smallest units of matter that make up protons and neutrons.
What is the effect of increasing the net external force on a system?
The system's acceleration increases (according to ΣF = ma).
What is the effect of increasing the mass of a system, given a constant net external force?
The system's acceleration decreases (according to ΣF = ma).
What happens when a system is in equilibrium?
There is no net change in the system over time.
What happens when a system is in dynamic equilibrium?
Changes occur, but the system returns to equilibrium.
What is the definition of a system in physics?
A collection of objects we're choosing to analyze together.
What is a closed system?
A system with no exchange of matter or energy with its surroundings.
What is an open system?
A system that exchanges matter and/or energy with its surroundings.
What is equilibrium?
A state where there is no change over time.
What is dynamic equilibrium?
Changes occur, but the system returns to equilibrium.
What are quarks?
The smallest units of matter that make up protons and neutrons.