Energy Flashcards
1
Q
Equation of total energy of a system, E,
A
E= mgz \+1/2mc^2 \+U \+...
2
Q
What are the translational and rotational kinetic energy?
A
KE=
1/2mc^2
1/2Iw^2
3
Q
Definition of heat
A
Is the form of energy that is transferred between two systems by virtue of temperature difference
Can cross boundary of a closed system.
4
Q
Definition of work
A
Is an energy interaction between a system and its surroundings
Scalar, J
5
Q
How is mechanical work calculated if force is a constant and is not a constant?
A
Constant:
W=F.s
Not constant:
W=∫F.ds
6
Q
What is the equation for shaft work?
A
W=
Fs=
2πnT
7
Q
What is the equation for constant and variable spring work?
A
Constant:
W=Fx
Variable:
W=∫F Dx
8
Q
What is the equation for a work done by a moving piston?
A
Constant:
W=F.ds=p.A.ds=pdV
Variable:
W=∫p.dV
