Models, Measurements and Vectors
0.0(0)
Studied by 3 people
Learn
Practice Test
Spaced Repetition
Match
FlashcardsCard Sorting
1/21
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
22 Terms
1
New cards
SI
A system of units known as \________ or International System is used by scientists and engineers all over the world.
2
New cards
physics
\________ is a process by which we arrive at general principles that describe the behavior of the universe.
3
New cards
physical quantities
\________ are related using equations.
4
New cards
uncertainty
\________ or error of a measured value is an indication of the maximum difference there is likely to be between a measured value and the true value.
5
New cards
significant figures
\________ are the meaningful digits in a measured value that tell us which digits are reliably known and which digit is uncertain.
6
New cards
operational definition
A(n) \________ is a procedure for measuring a fundamental quantity that serves as its definition.
7
New cards
physical quantity
A(n) \________ is a number used to describe an observation of a physical phenomenon quantitatively.
8
New cards
quantities
\________ are measured by comparing them with a reference standard known as a unit.
9
New cards
accuracy
\________ is the degree of closeness of a measured value to the true value.
10
New cards
International Bureau of Weights
A kilogram is the mass of a particular cylinder of platinum
11
New cards
standard SI prefixes
The \________ represent multiples and submultiples of 10 of the units they precede.
12
New cards
order of magnitude calculation
A(n) \________ is a rough, crude estimate which is designed to be accurate within a factor (usually) of 10.
13
New cards
physical quantities
A unit is a reference standard with which \________ are compared.
14
New cards
second
Time is measured in \________
15
New cards
second
The time required for 9,192,631,770 oscillations of Cesium 133 atom.
16
New cards
meter
Length is measured in \________
17
New cards
meter
The distance travelled by light (in a vacuum) in 1/299,792,458 seconds.
18
New cards
prefixes
Larger and smaller units of a predefined physical quantity are introduced using \______
19
New cards
significant figures
\________ are the meaningful digits that tell us which digits are reliably known and which digit is uncertain.
20
New cards
vector
A quantity that has both magnitude and direction.
21
New cards
The x component of a vector A
Aₓ=Acosθ
22
New cards
The y component of a vector A
Aᵧ=Asinθ