Physics

Question 1

Equations for Velocity

Answer 1

v = vi + a*t

v^2= vi^2 + 2ax

Question 2

Equation for Position

Answer 2

x = xi + vit + .5at^2

Question 3

Rational Velocity Equations

Answer 3

w = wi + a*t

w^2 = wi^2 + 2a*theta

Question 4

Rotational Position

Answer 4

theta = theta-initial + wit + .5at^2

Question 5

Angular Acceleration Equations

Answer 5

a = Torque / I ( ‘I’ is rotational inertia )

Question 6

Torque

Answer 6

T = r*Fsin(theta)

Question 7

Impulse

Answer 7

J = change in momentum = F*t

Question 8

Work and Power

Answer 8

W = F*dcos(theta) = change in Energy

P = E/t = W/t

Question 9

Harmonic Motion

Answer 9

x = Acos(wt) w = 2pi*f

Question 10

Center of Mass

Answer 10

x = Sum ( mi*xi ) / Sum ( mi )

Question 11

Angular Momentum

Answer 11

L = I*w ( ‘I’ is rotational Inertia )

Question 12

Angular Impulse

Answer 12

L - Torque * t

Question 13

Angular KE

Answer 13

K = .5Iw^2

Question 14

Work ( Circular motion)

Answer 14

W = F*rcos(theta)

Question 15

Power (circular motion)

Answer 15

P = Fvsin(theta)

Question 16

Spring Force

Answer 16

[F] = k*[x]

Question 17

Spring Potential Energy

Answer 17

U = .5kx^2

Question 18

Period of Oscillating Spring

Answer 18

T = 2piroot(m/k)

Question 19

Period of Simple Pendulum

Answer 19

T = 2piroot(L/g)

Question 20

Electric Field Strength Equations

Answer 20

E = F/q

[E] = (1/4pieo) * [q]/ r^2

[E] = [ V/r ]

Question 21

Electric Field Force

Answer 21

[F] = (1/4pieo) * q1q2/ r^2

Question 22

Electric Potential Energy

Answer 22

U = qV

Question 23

Voltage

Answer 23

V = (1/4pieo) * q/r

Question 24

Capacitor Voltage

Answer 24

V = Q/C

Question 25

Capacitance

Answer 25

C = k*eo*(A/d) k is the dielectric constant A is area d is distance

Question 26

Capacitor Electric Field

Answer 26

E = Q/eo*A

Question 27

Capacitor Potential Energy

Answer 27

U = .5* QV = .5* CV^2

Question 28

Current

Answer 28

I = Q/t

Question 29

Resistance

Answer 29

R = ro*L/A

Question 30

Power (Electrical)

Answer 30

P = I*V

Question 31

Resistors in Series

Answer 31

Sum R

Question 32

Resistors in Parallel

Answer 32

Sum 1/R

Question 33

Capacitors in Parallel

Answer 33

Sum C

Question 34

Capacitors in Series

Answer 34

Sum 1/C

Question 35

Magnetic Field Strength

Answer 35

B = uo*I / 2*pi*r

Question 36

Magnetic Force Equations

Answer 36

F = qv x B = [qv*sin(theta)*B] F = I*L x B = [I*L*sin(theta)*B]

Question 37

Magnetic Flux

Answer 37

Phi = BA*cos(theta)

Question 38

Electromagnetic Induction

Answer 38

e = -Phi/ t = BLv

Question 39

Density

Answer 39

ro = m/Vol

Question 40

Pressure

Answer 40

P = F/A

Question 41

Absolute Pressure

Answer 41

P = Po + ro*g*h

Question 42

Buoyant Force

Answer 42

F = ro* Vol* g

Question 43

Fluid Continuity Equation

Answer 43

A1v1 = A2v2

Question 44

Heat Conduction

Answer 44

Q/t = k*A*T/d k is thermal conductivity | T is temperature

Question 45

Ideal Gas Law

Answer 45

PV = nRT = n*kb*T

Question 46

Average Energy

Answer 46

K = 3/2 * kb* T

Question 47

Work (thermal)

Answer 47

W = -PV

Question 48

Internal Energy

Answer 48

U = Q + W Q is energy transferred by heating | W is work done by system

Question 49

Linear Expansion

Answer 49

L =a*Lo* T

Question 50

Heat Engine Efficiency

Answer 50

nc = [W/Q]

Question 51

Carnot Heat Engine Efficiency

Answer 51

nc = Th - Tc / Th

Question 52

Energy of Temperature Change

Answer 52

Q = mcT

Question 53

Energy of Phase Change

Answer 53

Q = mL

Question 54

Index of Refraction

Answer 54

n = c/v

Question 55

Thin Lens Equation

Answer 55

1/s + 1/si = 1/f

Question 56

Magnification

Answer 56

M = [hi/ho] = [si/so]

Question 57

Double Slit Diffraction

Answer 57

d*sin(theta) = m*lambda L = m*lambda

Question 58

Critical Angle

Answer 58

sin(theta) = n2/n1

Question 59

Focal Length for Spherical Mirror

Answer 59

f = R/2

Question 60

Standing Wave/ Open Pipe Harmonics

Answer 60

lambda = 2L/n

Question 61

Closed Pipes Harmonics

Answer 61

lambda = 4L/n

Question 62

Harmonic Frequencies

Answer 62

f = n* f_1

Question 63

Speed of Sound in Ideal Gas

Answer 63

v = root ( yRT/M) T is tension M is molecular mass y is adiabatic constant

Question 64

Speed of Wave in Wire

Answer 64

v =root (TL/m)

Question 65

Doppler (approaching)

Answer 65

fo = (v/ v-vs)* fs

Question 66

Doppler (receding)

Answer 66

fo = (v/ v+vs)* fs

Question 67

Photon Energy

Answer 67

E =hf

Question 68

Photoelectric Electron Energy

Answer 68

Kmax = hf - phi

Question 69

Electron Wavelength

Answer 69

lambda = h/p

Question 70

Rydberg Formula

Answer 70

1/lambda = R( 1/nf^2 - 1/ni^2 )

Question 71

Balmer Formula

Answer 71

lambda = B(n^2/ n^2 -4)

Question 72

Lorentz Factor

Answer 72

gamma = 1/ root (1 - v^2/c^2)

Question 73

Relativistic Mass

Answer 73

M = mo* gamma