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Evans Physics
Physics Formulas
Question | Answer |
---|---|
Average velocity | X/t |
Definition of acceleration | (V-Vo)/t |
Displacement in terms of V, Vo and t. | (1/2)(Vo+V)t |
Final velocity | Vo+(a)(t) |
Displacement in terms of Vo,t, and a. | Vo(t)+(1/2)(a)(t^2) |
Final Velocity Squared | Vo^2+ 2(a)(x) |
Newton's Second Law (aka net force) | (m)(a) |
Friction | (the mew sign)(Fn) |
Work | Fs(cosign of theta) |
Net Kinetic Energy | (1/2)(m)(v^2) |
Work- Kinetic Energy Theorem | {W=change in kinetic |
Potential gravity: | (m)(g)(h) |
Potential elastic: | (1/2)(K)(X^2) |
Power in terms of work and time: | W/t |
Power in terms of force and velocity: | (F)(V) |
Momentum | (M)(v) |
Impulse Momentum Theorem | Fav(t)=change in momentum |
Centripetal Acceleration | V^2/R |
Centripetal Force | (M)(V^2)/R |
Newton's Universal Law | (G)(M1)(M2)/(R^2) |
Effiency | Wout/Win |
Mechanical Advantage | Fout/Fin=Sin/Sout |
Torque | (R)(F)(sin of theta) |
Pressure | F/A |
Work Done On/By a Gas | -P(deltaV) |
1st Law of Thermo | (DeltaV)= Q + W |
Efficiency of a Heat Engine | (QH-QC)/ QH |
Hooke's Law | -kx |
Speed of a Wave | f(wavelength) |
Period of a Pendelum | 2 |
The Mirror Equation | 1/f=1/So+ 1/Si |
Harmonics for a closed pipe | nV/4L |
Harmonics for an open pipe | nV/2L |
Intensity | P/4(Pi)r^2 |
Magnification | Hi/Ho= -Si/So |