Measurements Flashcards
1
Q
What is joule a unit of, and what is the symbol for joule?
A
Unit of energy.
Symbol: (J)
2
Q
Base SI unit of length?
A
Meter (m)
3
Q
Base SI unit of mass?
A
Kilogram (kg)
4
Q
Base SI unit of time?
A
Seconds (s)
5
Q
Base SI unit of temperature?
A
kelvin (K)
6
Q
Base SI unit of electric current?
A
ampere (A)
7
Q
Base SI unit for amount of substance?
A
Mole (mol)
8
Q
Base SI unit of luminous intensity?
A
candela (cd)
9
Q
Prefix kilo means
A
x 10^3
Or x 1000
10
Q
The prefix femto means what factor
A
10^-15
11
Q
The prefix pico means a factor of
A
10^-12
12
Q
What is an atomic mass unit (amu) equal to?
A
1/12 the mass of an unbound atom of Carbon-12.
In grams:
1 amu = 1.66 • 10^-24g
13
Q
1 hertz or 1 Hz means?
A
1 cycle / second
14
Q
How would you calculate the speed of a wave?
A
Wavelength x frequency
λ•ν
15
Q
One joule is equal to what in si units?
A
1kg•m^2/s^2
