AP Physics Formulas

Instructions:

• Answer 50 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• Match each statement with the correct term.
• Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. isothermal
no temp change
delta x = (Vo)t + .5at^2
M(Lf)
h(Fo)


2. second kinematic
(EMF)Rt/10
delta x = (Vo)t + .5at^2
MC(deltaT)
no temp change


3. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
no heat flow
dSintheta=mwavelength
G M/((d/2)^2)
no temp change


4. change in internal energy during a cyclic process
(V^2)/r
constant volume
0
MC(deltaT)


5. formula for the wavelength (debroglie wavelength) of a moving particle
elastic collision
mgCostheta(mu)d
h/mv
sqrt(3KT/m)


6. formula to find the gauge pressure at the bottom of a pool
K |q||Q|/r^2
roegh
pL/A
frequency never changes for light problems


7. type of collision where K is not conserved
BLv
dSintheta=mwavelength
mV -m(Vo)
inelastic collision


8. units for voltage other than volts
Ed=V
Joules/Columb
h/mv
GM*M/(r^2)


9. heat required to change temperature of a substance
frequency never changes for light problems
.5CV^2 or .5 Q^2/C or .5QV
MC(deltaT)
(V^2)/r


10. third kinematic
V^2=(Vo)^2 +2a*change in x
pL/A
KI/r
roeVg


11. formula for constructive interference in a thin membrane with two phase changes
qVB
-KA
2nt=mwavelength
V = (Vo) + at


12. formula for finding the momentum of a photon
d/2
(V^2)/R
h/wavelength
(Patm) + (Pgauge)


13. new wavelength of light as it enters a new substance
(V^2)/r
(No)(wavelength)=(Nn)(new wavelength)
no force (right hand rule)
h/wavelength


14. what direction is friction?
(Di)/(Do) or (Hi)/(Ho)
(EMF)Rt/10
opposite motion
no force (right hand rule)


15. the units of power other than watts
joules/second
V^2=(Vo)^2 +2a*change in x
(No)(wavelength)=(Nn)(new wavelength)
h/wavelength


16. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
(1/Do) + (1/Di) = (1/f)
V^2=(Vo)^2 +2a*change in x
K |q||Q|/r^2


17. hooke's law force of a spring
L -LCostheta
no force (right hand rule)
-KA
qVB


18. formula for efficiency not using work out
sqrt(T/(m/))
((Qin) -(Qout))/(Qin)
MC(deltaT)
deltaU -deltaW


19. formula for power with current and resistance
0
Columbs/second
perfectly inelastic collision
(I^2)R


20. formula for finding the work function of a metal if the cutoff frequency is known
.5CV^2 or .5 Q^2/C or .5QV
AV=(A2)(V2)
h(Fo)
((Th) -(Tl))/(Th)


21. resistance of a wire
mgCostheta(mu)d
pL/A
.5CV^2 or .5 Q^2/C or .5QV
sqrt(3KT/m)


22. formula for height of the block (at the start of a pendulum string) in terms of theta and L
sqrt(T/(m/))
-KA
mgCostheta(mu)d
L -LCostheta


23. formula for finding magnetic flux
Ed=V
perfectly inelastic collision
BA
d/2


24. the units of current other than amps
constant pressure
2Pi * sqrt(l/g)
Columbs/second
AV=(A2)(V2)


25. formula to find the absoluate pressure at the bottom of a pool
sqrt(T/(m/))
(Patm) + (Pgauge)
inelastic collision
E/B


26. formula for finding the magnetic field a distance r from a current carrying wire
joules/second
BLv
.5mV^2 + .5KA^2
KI/r


27. isometric
dSintheta=mwavelength
2Pi * sqrt(l/g)
qV
constant volume


28. pressure
(3/2)nRdeltaT
F/A
Joules/Columb
(Di)/(Do) or (Hi)/(Ho)


29. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
G M/((d/2)^2)
VI
2nt=mwavelength


30. voltage induced in a rod moving through a uniform magnetic field
(Wnet)/(Qin)
2nt=mwavelength
BLv
qVB


31. type of collision where K is conserved
constant volume
K |q||Q|/r^2
elastic collision
mV -m(Vo)


32. formula for impluse involving time
J= Ft
no heat flow
perfectly inelastic collision
Columbs/second


33. formula for power with Voltage and resistance
((Qin) -(Qout))/(Qin)
m(v^2)/qvB
(I^2)RT
(V^2)/R


34. formula for Carnot efficiency
K |q||Q|/r^2
((Th) -(Tl))/(Th)
elastic collision
(Wnet)/(Qin)


35. EMF of a battery having internal resistance R
Ed=V
V+IR
VI
F/A


36. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
roegh
opposite motion
deltaU = deltaQ + deltaW


37. formula equating energy and mass
rF
(No)(wavelength)=(Nn)(new wavelength)
no force (right hand rule)
e=mc^2


38. force of gravity between two objects of mass m
GM*M/(r^2)
((Th) -(Tl))/(Th)
((Qin) -(Qout))/(Qin)
(Wnet)/(Qin)


39. heat during an isometric process
V+IR
2Pi * sqrt(l/g)
pL/A
n(Cv)(deltaT)


40. the force on a charge moving parallel to a magnetic field
FV
no force (right hand rule)
no heat flow
qV


41. focal length of a mirror with radius d
(N2)/(N1)
d/2
pL/A
GM*M/(r^2)


42. the electric force between two objects of charge Q
h/mv
K |q||Q|/r^2
h(Fo)
constant pressure


43. total capacitance of capacitors in series
hc/wavelength
qV
(1/Do) + (1/Di) = (1/f)
1/((1/C)+(1/C)..........)


44. formula for period of a pendulum
KI/r
m(v^2)/qvB
Joules/Columb
2Pi * sqrt(l/g)


45. work energy theorum
E/B
Joules/Columb
net work = delta K
constant volume


46. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
Ed=V
1/2wavelength
(3/2)nRdeltaT


47. velocity of an electrion as it exitws from the hole
delta x = (Vo)t + .5at^2
GM*M/(r^2)
qrB/m
(V^2)/r


48. formula for buoyant force
((Qin) -(Qout))/(Qin)
AV=(A2)(V2)
(V^2)/R
roeVg


49. formula for critical angle
(I^2)R
roeVg
(Di)/(Do) or (Hi)/(Ho)
(N2)/(N1)


50. energy stored in a capacitor
V^2=(Vo)^2 +2a*change in x
.5CV^2 or .5 Q^2/C or .5QV
rF
(I^2)R