Measures Flashcards
What does deci mean?
10^ -1
What does centi mean?
10^-2
What does milli mean?
10^ - 3
What does Micro mean?
10^ -6
What does nano mean?
10^ -9
What does pico mean?
10^ -12
What does deca mean?
10^ 1
What does hecto mean?
10^ 2
What does kilo mean?
10^ 3
What does mega mean?
10^ 6
What does giga mean?
10^9
What does terra mean?
10^ 12
Unit of Newton?
Kgms^-2
What are the units of joule?
N*m
What are the units of watt?
J/s
What are the units of pascal?
N/m^2
What are the units of volt
J /c or w/a
What are the units of ampere
C/s
What are the units of ohm
V/a
What are the units of Weber
V* S
What are the units of tesla
Wb/m^ 2
What are the units of hertz
Cycle/s
1l=? Dm^3
1 dm^3
What is a vector?
A quantity that has both direction & magnitude
Example of vector quantities
Velocity, displacement, torque, input, field (magnetic, eletric..) & acceleration
What are scalars?
A quantity that has only magnitude
Example of scalar quantities
Mass, area, volume, time, distance, energy, work, current, voltage, resistance, charge & so on
Is pressure a vector or scalar?
Scalar
Is pressure a vector or scalar?
Scalar
Is pressure a vector or scalar?
Scalar
Is entropy a vector or scalar?
Scalar
Is capacity a vector or scalar?
Scalar
What does multiplying a scalar & a vector yield?
A vector
Is magnetic field a vector or scalar?
Vector
Is drag a vector or scalar?
Vector
Is gravitational field a vector or scalar?
Vector
Is momentum a vector or scalar?
Vector
Is impulse a vector or scalar?
Vector
Is force/weight a vector or scalar?
Vector
Formula for pressure
P=F/A
Force in newtons
Area in m^2
Unit for pressure
Pascal
Other units of pressure
Atmosphere, atm
Milo meters of mercury, mmHg
Torr
Bar
How much is 1 atm in kPa?
101.325
1atm to mmHg
760
1atm to torr
760
1 bar to kPa
100
Pressure of fluids formula
P=roh (density) * height
Do vectors have to start from the same place to be equal?
No
What is the average velocity if displacement is 0?
Also 0
