thermodynamics

0.0(0)
studied byStudied by 6 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/3

flashcard set

Earn XP

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

4 Terms

1
New cards

explain U = n*K, and give examples of instances where U is big and where U is small

the thermal energy of a system is equal to the average kinetic energy (temperature) of a molecule multiplied by the number of molecules

since thermal energy is directly proportional to the number of molecules and the temperature of the system:

  • big and hot objects have high thermal energy

  • small and cold objects have low thermal energy

2
New cards

define a closed system and give an example

  • energy cant move in or out of the system

  • energy is CONSERVED, ΔU = 0

  • no type of any energy can move through walls

  • impossible, just close enough

  • examples, sealed box, piston, anything with a lid, the universe

3
New cards

define an open system and give an example

  • thermal energy is NOT conserved in the system; it is free to move in or out

  • ΔU > 0

4
New cards

rrgrgrgr

rrr