Physics Basics Flashcards
For significant figures; when a decimal goes left the power will be _______
and when the decimal goes right the power will be _________
- Positive
2. Negative
Physical quantities are divided into two categories:
- _____________
- _____________
- Base quantities
2. Derived quantities
What unit is time measured in?
Second
Physical quantities is a physical quantity that can be ___________.
The value of the measurement consists of a numerical ___________ and a unit.
- Measured
2. Value
Which base unit is measured in candela (cd)?
Luminous Intensity
Derived quantities is one which obtained by combining base quantities by multiplication, division or both these operations. For example : current x time.
which is the formula for?
Charge
Q = I x t
Charge = Current times time
Mass x acceleration =
m x a
Force
Density’s formula is…
mass divided by volume
Study numerical unit
Write the following in standard form:
6 370 000m =
0.000 03m =
0.000 000 55m =
- 6.37 x 10^6
- 3 x 10^-5
- 5.5 x 10^-7
State the prefixes
Tera ( T) Giga ( G ) Mega ( M ) Kilo ( k ) Hekto ( h ) Deka ( da ) Deci ( d ) Centi ( cm ) Mili ( m ) Micro ( u ) Nano ( n ) Pico ( p )
What is the standard form of Kilo?
10 ^3
What is the standard form of micro?
10 ^-6
What is the standard form of Mega?
10 ^6
What is the standard form of milli ?
10 ^-3
What is the standard form of Pico?
10 ^-12
