Equations and Constants

Question 1

Average Speed

Answer 1

Δx / Δt

Question 2

Average Velocity

Answer 2

Δd / Δt

Question 3

Acceleration

Answer 3

Δv / Δt

Question 4

Newton’s Second Law

Answer 4

F = ma

Question 5

Static Friction

Answer 5

F = Us F

Question 6

Kinetic Friction

Answer 6

F = Uk F

Question 7

Force of Gravity Perpendicular to an Inclined Plane

Answer 7

F = mgcosθ

Question 8

Force of Gravity Parallel to an Inclined Plane

Answer 8

F = mgsinθ

Question 9

Torque

Answer 9

T = rFsinθ

Question 10

Work

Answer 10

W = Fdcosθ

Question 11

Mechanical Advantage

Answer 11

MA = Fout / Fin

Question 12

Power

Answer 12

P = W/t or ΔE/t or Fv

Question 13

Kinetic Energy

Answer 13

KE = 1/2 mv^2

Question 14

Gravitational Potential Energy

Answer 14

U=mgh

Question 15

Elastic Potential Energy

Answer 15

U= 1/2 kx^2

Question 16

Hooke’s Law

Answer 16

F= -kx

Question 17

Frequency of a Wave

Answer 17

f= 1/T

Question 18

Speed of a Wave

Answer 18

v = fλ

Question 19

Density

Answer 19

p= m/V

Question 20

Buoyant Force

Answer 20

F= mg = pVg

Question 21

Pascal’s Law

Answer 21

F1/A1 = F2/A2

Question 22

Hydrostatic Pressure

Answer 22

P= Po + pgz

Question 23

Continuity Equation

Answer 23

A1v1 = A2v2

Question 24

Pressure

Answer 24

P= F/A

Question 25

Ideal Gas Law

Answer 25

PV= nRT

Question 26

Boyle’s Law

Answer 26

P1V1 = P2V2

Question 27

Charle’s Law

Answer 27

V1/T1 = V2/T2

Question 28

Avogadro’s Law

Answer 28

n1/V1 = n2/V2

Question 29

Average Kinetic Energy of a Gas Particle

Answer 29

KE = 3/2KB T

Question 30

van der Waals Equation of State

Answer 30

P = nRT/ V - nb

Question 31

Heat Transfered

Answer 31

q= mcΔT

Question 32

Change in Gibbs Free Energy

Answer 32

ΔG=ΔH - TΔS

Question 33

Sound Level

Answer 33

β = 10 log (I/Io)

Question 34

Sound Intensity

Answer 34

I = P/A

Question 35

Waves in Open Pipes

Answer 35

λ = 2L/n
f = v/λ = nv/2L

Question 36

Waves in Closed Pipes

Answer 36

λ = 4L/n
f= v/λ = nv/4L

Question 37

Energy of a Photon

Answer 37

E= hf

Question 38

Index of Refraction

Answer 38

n = c/v

Question 39

Snell’s Law

Answer 39

n1 sinθ1 = n2sinθ2

Question 40

Critical Angle

Answer 40

θc = sin-1 (n2/n1)

Question 41

Optics Equation

Answer 41

1/f = 1/o + 1/i = 2/r

Question 42

Magnification

Answer 42

m = -1/o

Question 43

Ohm’s Law

Answer 43

V = IR

Question 44

Power

Answer 44

P = IV or I^2R

Question 45

Current

Answer 45

I = Q/t

Question 46

Resistors in Series

Answer 46

Rs = R1 + R2 + R3

Question 47

Resistors in Parallel

Answer 47

1/R1 = 1/R1 + 1/R2 + 1/R3

Question 48

Capacitance

Answer 48

C= Q/V

Question 49

Capacitors in Series

Answer 49

1/Cs = 1/C1 + 1/C2 + 1/C3

Question 50

Capacitors in Parallel

Answer 50

Cp = C1 + C2 + C3

Question 51

Magnetic Force

Answer 51

F= qvB sinθ

Question 52

Gravity Constant (g)

Answer 52

10 m/s

Question 53

Speed of Light Constant (c)

Answer 53

3 x 10^8 m/s

Question 54

Avogadro’s Number (N)

Answer 54

6 x 10^23

Question 55

Gas Constant (R)

Answer 55

8. 3 K K

8. 3 x 10^-2 L ATM/molK

Question 56

Planck’s Constant (P)

Answer 56

6.6 x 10^-34 J sec

4 x 10^-15 eVs

Question 57

Faradays Constant (F)

Answer 57

96500 C/mol

Question 58

proton charge

Answer 58

1.6 x 10^-19 (electron is same magnitude just negative)