Units Flashcards
1
Q
Unit of Force
A
Newton (N)
2
Q
Definition of Newton
A
force required to accelerate 1 kg by 1 ms-2
3
Q
Unit of Energy
A
E in Joule
4
Q
Definition of Joule
A
work done by force of 1N in moving 1 kg by 1 m
5
Q
Unit of Power
A
P in Watt
6
Q
Definition of watt
A
Joule per second
7
Q
Unit of Energy 2
A
E in kWh
8
Q
Definition of kWh
A
3.6 *10^6 J
9
Q
Checking dimensions
A
fill in in units for every variable and cross out until you reach your end term.
10
Q
Using dimensional analysis to find expression
A
Write down all factors
Raise them to the power of a, b, c, etc
Replace the units
Determine the value of a, b, c, etc by using the unit of the answer and it’s power.
11
Q
Unit of speed
A
u or v in m/s
12
Q
unit of volume flow
A
m3/s
13
Q
Unit of mass flow
A
kg/s
14
Q
Unit of thermal energy
A
Q in J
15
Q
Temperature
A
T in K
