SI Units, Constants, and prefixes Flashcards
1
Q
distance
A
d = meters = m
2
Q
mass
A
m = kilograms = kg
3
Q
time
A
t = seconds = s
4
Q
velocity/speed
A
v = meters/second = m/s
5
Q
acceleration
A
a = meters/second squared = m/s^2
6
Q
force
A
F = newtons = N
7
Q
torque
A
τ = newton-meters = N•m
Vector!
8
Q
momentum
A
ρ = kg•m/s
9
Q
impulse
A
J = newton-seconds = N•s
10
Q
work
A
W = joules = J = kg•m^2/s^2
11
Q
energy
A
KE/PE/E = joules = J = kg•m^2/s^2
12
Q
power
A
P = watts = W = J/s
13
Q
pressure
A
P = pascals = Pa = N/m^2
14
Q
density
A
ρ = kilograms per cubic meter = kg/m^3
15
Q
flow rate
A
f = m^3/s
16
Q
electric charge
A
q = coulombs = C
17
Q
electric field
A
E = Newtons per coulomb = N/C (or volts per meter = V/m)
18
Q
electric potential
A
φ = volts = V = J/C
19
Q
voltage
A
V = volts = J/C
20
Q
current
A
I = amps = A = C/s
21
Q
resistance
A
R = ohms = Ω = V/A
22
Q
resistivity
A
ρ = ohm-meters = Ω•m
23
Q
capacitance
A
C = farads = F = C/V
24
Q
magnetic field
A
B = tesla = T = N/A•m
25
frequency
f = hertz = Hz = s^-1
26
period
T = seconds = s
27
sound level
β = decibals = dB
28
lens power
P = diopters = D = m^-1
29
gravity
10 m/s^2
30
density of water
ρ = 1000kg/m^3 = 1g/cm^3
31
elementary electric charge
e = 1.6x10^-19 C
32
Coulomb's constant
k = 9x10^9 N•m^2/C^2
33
threshold of human hearing
I = 10^-12 W/m^2
34
speed of light in a vacuum
v = 3x10^8 m/s
35
pico
p = 10^-12
36
nano
n = 10^-9
37
micro
μ = 10^-6
38
milli
m = 10^-3
39
centi
c = 10^-2
40
kilo
k = 10^3
41
mega
M = 10^6
42
giga
G = 10^9
43
speed of sound
340 m/s (in air)
