01 Working as a Physicist Flashcards
pico
x10^-12 (p)
nano
x10^-9 (n)
micro
x10^-6 (u)
milli
x10^-3 (m)
centi
x10^-2 (c)
kilo
x10^3
mega
x10^6
giga
x10^9
Terra
x10^12
Name the seven base units
length
mass
time
current
temperature
amount of substance
luminous intensity
name the seven si units measurements
length - meter (m)
mass - kilogram (kg)
time- second (s)
current - Ampere (A)
temp - Kelvin (K)
amount of substance - mole (mol)
luminous intensity - candela (cd)
What are the two rules for combining uncertainties?
- multiplying/ dividing two measurements: percentage uncertainties are added.
- measurements that are subject to powers: multiplied by the power.
how do you calculate percentage uncertainties?
(resolution/reading) *100
What is a scalar quantity?
A quantity with magnitude only
What is a vector quantity?
A quantity with magnitude and direction
give me 8 examples of scalar quantities
speed
distance
energy
time
power
charge
current
voltage
give me 4 examples of vector quantities
velocity
displacement
forces
acceleration
define speed
rate of change of distance
define velocity
rate of change of displacement
define distance
distance refers to how much ground an object has covered during its motion
define displacement
displacement refers to how far out of place an object is and is the overall change in the objects position