# AP Physics Equations

## 69 terms

### v=v. + at

change in velocity

### x=x.+v.t+(.5at²)

Change in x for two dimentional motion

### v²=v.² + 2a(x-x.)

Change in velocity during acclerated motion

Force

Frictional force

Torque

Momentum (p)

impulse

impulse

impulse

Kinetic Energy

Potential Energy

Work

Power

Force of Spring

### (1/2)kx²

Potential energy of spring

Period of spring

### 2¶√(l/g)

Period of pendulum

### 1/f

Period (f=frequency)

### Gmm/r²

Force of gravity between two masses

### Gmm/r

Potential energy between two masses

### E/q

Force on charge by electric field

Electric field

### qV

Potential energy of charge

Capacitance (C)

Resistance

### IR

Potential Difference (V)

### IV

Power (electricity)

Power Loss

### C+C+C+C+C....

Total Capacitance in parallel

### (1/C)+(1/C)+(1/C)+...=(1/Ctotal)

Total Capacitance (Series)

### R+R+R+R....

Total Resistance (Series)

### (1/R)+(1/R)+(1/R)+...=(1/Rtotal)

Total Resistance in Parallel

### qvBsinø

Force of B field on charged particle

### BI l sinø

Force of B field on wire

Magnetic Flux

### Magnetic Flux/t

Electro Magnetic Force

### Blv

Electro magnetic Force (l is length of bar, v is velocity of bar)

Pressure

### pVg

Force of Buoyancy

### Av=Av

initial Av is equal to final Av (Area and velocity initial is equivelent to final A and v)

### P+pgy+½pv²

Constant (Bernoulli's Equation)

Change in Length

Pressure

### PV=nRT

Ideal Gas equation

### √(3RT/M)

root mean square velocity

Work (pressure)

### Q+W

Total internal energy

Efficiency

energy (quantum)

energy (quantum)

### hf-work

Kinetic Energy (quantum)

### h/p

Wavelength (quantum)

### mc²

Change in energy (quantum)

velocity

### c/v

intdex of refraction (n)

### nsinø=nsinø

Refraction equation(by seting one side to 90 you can find the critical angle)

### n final/n initial

sin of critical angle

### (1/di)+(1/do)=1/f

Mirors and lenses

positive

### diverging lenses

negative f (for lenses)

Focal point

### W=0 constant volume

isochoric process

isobaric process

### W=Q constant temp

Isothermal process

### Th-Tc/Th

Thermal efficiency of carnot engine

### KE is conserved

Elastic collision

### Kinetic energy is not conserved

Inelastic collision