Physics 1133 Self Test
independent variable
a variable that is not related to another
rotational equilibrium
clockwise torque equal counterclockwise torque
Numbers with the same exponent are said to have the same ... of ...
order of magnitude
What is force?
Force is a pull or push that tends to produce motion or a change in motion of a material body
... is motion around a fixed axis
Rotation
experimental science
relies on experimentation rather than observation alone
equilibrant
a vector that produces equilibrium
derived units
units of measurement obtained from the seven fundamental units
cos O
adj/hyp
proportionality constant
changes as proportion to an equation
inexact science
medicine is an example
To ... powers of ten, we add the exponents
multiply
descriptive science
astronomy is an example
Give two ways to find a resultant of three or more vectors
resolve them two at a time use the polygon rule
translational equilibrium
resultant of all components forces is zero
fundamental units
seven units of measurement defined by international agreement
order of magnitude
same as the power of ten of a number
neutral stability
center of gravity remains at the same height
The mass of a body can be treated as if it concentrated at a single point called the ...
center of mass
... can summarize large amounts of information with numbers and symbols
equations
The ... is equal in magnitude but opposite in direction to the ...
equilibrant, resultant
If the component vectors form a right triangle, the resultant is the ... of the triangle
hypotenuse
Name the physical quantities measured by the seven fundamental units
length, mass, time, temperature, electrical current, luminous intensity, number of particles
Define physics by the rule method
Physics is the study of matter and energy and of relationships between the two
sin O
opp/hyp
Name three kinds of equilibrium and give an example of each
stable- a suitcase on its side unstable- a coin balances on its edge neutral- a bowling ball
What is the only accurate and unchanging standard for life?
The only standard that has proved accurate and unchanging is the Word of God
tan O
opp/adj
To ... powers of ten, we subtract the exponent in the denominator from the exponent in the numerator
divide
exact science
repeated experiments lead to same outcome
Clockwise torque has a ... value, and a counterclockwise torque has a ... value
negative, positive
resultant
a single vector that is the sum of two or more vectors
dependent variable
a variable that is inversely or directly related to another