All Flashcards
What is the difference between a closed and open system?
Closed System: No exchange of matter or energy. | Open System: Exchanges matter and/or energy.
What is the difference between up and down quarks?
Up Quarks: Positive charge. | Down Quarks: Negative charge.
What is the difference between internal and external forces?
Internal Forces: Forces within the system, often ignored when analyzing the whole system. | External Forces: Forces acting on the system from outside, affecting the system's overall motion.
What is the difference between equilibrium and dynamic equilibrium?
Equilibrium: No change over time. | Dynamic Equilibrium: Changes occur, but the system returns to equilibrium.
What is the difference between protons and neutrons?
Protons: Two up quarks and one down quark (positive charge). | Neutrons: Combination of up and down quarks (neutral charge).
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 are the differences between a closed system and an open system?
Closed System: No exchange of matter or energy. | Open System: Exchanges matter and/or energy.
What is the difference between external and internal forces?
External Forces: Forces acting on the system from outside, affecting overall motion. | Internal Forces: Forces acting within the system, often negligible for overall motion.