Test your basic knowledge |

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
1/4wavelength
no temp change
V = (Vo) + at
VI

2. equation for the first law of thermodynamics
KQ/r
joules/second
deltaU = deltaQ + deltaW
2nt=mwavelength

3. energy stored in a capacitor
h/wavelength
(V^2)/R
Columbs/second
.5CV^2 or .5 Q^2/C or .5QV

4. natural frequency of a closed tube of length L
GM*M/(r^2)
1/4wavelength
.5mV^2 + .5KA^2
.5KA^2

5. formula to find the gauge pressure at the bottom of a pool
roegh
qVB
.5mV^2 + .5KA^2
Q=CV

6. snells law
nSintheta=nsintheta
1/2wavelength
M(Lf)
.5mV^2 + .5KA^2

7. heat required to melt a substance
(Wnet)/(Qin)
AV=(A2)(V2)
M(Lf)
deltaU = deltaQ + deltaW

8. the units of power other than watts
0
joules/second
MC(deltaT)
mV -m(Vo)

9. type of collision where K is not conserved
M(Lf)
inelastic collision
((Qin) -(Qout))/(Qin)
.5KA^2

10. energy of a photon if wavelength is known
hc/wavelength
(I^2)RT
BA
(V^2)/r

11. isometric
e=mc^2
constant volume
h(Fo)
no heat flow

12. resistance of a wire
delta x = (Vo)t + .5at^2
(I^2)RT
K |q||Q|/r^2
pL/A

13. force of friction
elastic collision
pL/A
net work = delta K
(Fn)(mu)

14. force of frction on an incline
h(Fo)
L -LCostheta
mgCostheta(mu)d
dSintheta=mwavelength

15. force of gravity between two objects of mass m
(I^2)RT
.5KA^2
GM*M/(r^2)
-KA

16. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
M(Lf)
deltaU = deltaQ + deltaW
AV=(A2)(V2)
G M/((d/2)^2)

17. formula for power with current and resistance
no force (right hand rule)
2Pi * sqrt(l/g)
(I^2)R
Ed=V

18. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
inelastic collision
M(Lf)
(3/2)nRdeltaT

19. formula for finding the magnetic field a distance r from a current carrying wire
M(Lf)
Joules/Columb
KI/r
AV=(A2)(V2)

20. formula equating energy and mass
e=mc^2
V^2=(Vo)^2 +2a*change in x
1/4wavelength
frequency never changes for light problems

21. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
(1/Do) + (1/Di) = (1/f)
(V^2)/r
frequency never changes for light problems

22. formula for charge stored in a capciator
Q=CV
2nt=mwavelength
BA
1/((1/C)+(1/C)..........)

23. formula for impulse involving momentum
Q=CV
KQ/r
mV -m(Vo)
(V^2)/r

24. formula for power with current and voltage
KQ/r
BLv
VI
L -LCostheta

25. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
rF
qV
delta x = (Vo)t + .5at^2
1/((1/C)+(1/C)..........)

26. electric field in a distance r from a charge
k|Q|/r^2
KI/r
qVB
Q=CV

27. velocity of an electrion as it exitws from the hole
sqrt(3KT/m)
KQ/r
(I^2)RT
qrB/m

28. formula for torque
rF
-KA
FV
Q=CV

29. new wavelength of light as it enters a new substance
Q=CV
(No)(wavelength)=(Nn)(new wavelength)
(hc/wavelength)=h(Fo) +(Vs)
(V^2)/R

30. change in internal energy during a cyclic process
dSintheta=mwavelength
0
perfectly inelastic collision
qV

31. velocity of a molecule of gas
KI/r
Columbs/second
no force (right hand rule)
sqrt(3KT/m)

32. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
1/4wavelength
e=mc^2
.5mV^2 + .5KA^2
((Th) -(Tl))/(Th)

33. heat during an isometric process
opposite motion
KI/r
n(Cv)(deltaT)
Columbs/second

34. units for voltage other than volts
(V^2)/R
Joules/Columb
0
roeVg

35. third kinematic
constant volume
V^2=(Vo)^2 +2a*change in x
(N2)/(N1)
(I^2)R

36. formula relating voltage and electric field
roeVg
(V^2)/r
frequency never changes for light problems
Ed=V

37. formula for constructive interference in a thin membrane with two phase changes
.5mV^2 + .5KA^2
2nt=mwavelength
MC(deltaT)
qVB

38. formula for finding the momentum of a photon
E/B
h/wavelength
constant volume
no heat flow

39. formula for efficiency of a heat engine using work out
qV
.5mV^2 + .5KA^2
(Wnet)/(Qin)
BLv

40. EMF of a battery having internal resistance R
Ed=V
V+IR
no force (right hand rule)
(Wnet)/(Qin)

41. formula for the wavelength (debroglie wavelength) of a moving particle
GM*M/(r^2)
J= Ft
h/mv
no heat flow

42. formula for finding the work function of a metal if the cutoff frequency is known
(No)(wavelength)=(Nn)(new wavelength)
h(Fo)
V+IR
dSintheta=mwavelength

43. formula for period of a pendulum
2Pi * sqrt(l/g)
qVB
h/wavelength
joules/second

44. what direction is friction?
d/2
constant pressure
n(Cv)(deltaT)
opposite motion

45. electric potential a distance r from a charge
KQ/r
constant pressure
deltaU -deltaW
dSintheta=mwavelength

46. the units of current other than amps
2nt=mwavelength
deltaU = deltaQ + deltaW
Columbs/second
V = (Vo) + at

47. formula to find the absoluate pressure at the bottom of a pool
Ed=V
(Patm) + (Pgauge)
sqrt(T/(m/))
constant volume

48. formula for impluse involving time
Columbs/second
BLv
Q=CV
J= Ft

49. formula for buoyant force
roeVg
1/((1/C)+(1/C)..........)
.5CV^2 or .5 Q^2/C or .5QV
(hc/wavelength)=h(Fo) +(Vs)

50. total capacitance of capacitors in series
constant volume
h/mv
1/((1/C)+(1/C)..........)
(I^2)RT