Week 1 Flashcards
(14 cards)
What is work?
Work is the measure of energy
What is the formula for work?
Differential for work is dW = FdS
Define a system?
A system is a body of matter confined by wall which separate it from it’s surroundings.
What is an isolated system?
Energy cannot enter or leave, Matter cannot enter or leave
What is a closed system?
Matter cannot enter or leave however energy can enter or leave the system.
What is a Open-system?
Both energy and matter can enter or leave
What is potential energy?
The energy a substance has with respect to a ground state. Ex Gravity
What is work measured in?
J, Joules
What is Kinetic Energy?
The energy a substances has when it’s moving
What is internal energy?
The measure of Kinetic and Potential energy on the molecular level. Ex Bonds, Particle speeds
What is the First Law of Thermodynamics?
Energy can neither be created or destroyed
What is the formula of the 1st Law of Thermodynamics?
E = KE + PE + u = constant
What is the formula for the change in energy?
ΔE = Q + W
What is the difference between Work and Heat?
They are both the transfer of energy, work is the transfer of mechanical energy, while heat is the transfer of thermal energy.
