Physics 1133 || ACE

How did Jesus summarize the Ten Commandments?

"Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind."

In standard scientific notation, only one ___ is to the left of the ___.

- digit - decimal point

Other units of measurement can be derived from the units for ___, ___, and ___.

- length - mass - time

Seven physical quantities measured by fundamental units

- length - mass - time - temperature - electrical current - luminous intensity - number of particles

Name the two broad categories of science

- life sciences - physical sciences

The equilibrant is equal in ___ but opposite in ___ to the resultant.

- magnitude - direction

Distance is a ___ quantity, but displacement is a ___ quantity.

- scalar - vector

What makes two variables dependent?

If a change in one variable causes a corresponding change in the other, the two variables are dependent.

Mass

Mass, a fundamental quantity, is the amount of matter in an object.

One way to measure time

One way to measure time is to count events that occur regularly

Fundamental principles of life are summarized in the ___.

Ten Commandments

Translational equilibrium

whenever the resultant of all component forces is zero

If an exact measurement includes ___, they must be shown as significant figures in scientific notation.

zeros

Units of measurement cancel in the ___ and ___ in exactly the same way as common factors.

- numerator - denominator

Two ways to find a resultant of three or more vectors

- resolving them two at a time - using the polygon rule

The three steps to multiply two number using scientific notation

1. multiply the number parts 2. add the exponents 3. convert the answer to standard form

1. time 2. temperature 3. electric current 4. luminous intensity 5. particles of matter

1. second 2. Kelvin scale 3. ampere 4. candela 5. mole

three kinds of equilibrium and give an example for each

1. stable - a suitcase flat on its side 2. unstable - a coin balanced on its edge 3. neutral - a bowling ball

What makes a science an exact science?

A science is exact if an experiment repeated under the same conditions leads to the same outcome.

___ can summarize large amount of information with number and symbols.

Equations

Force

Force is a pull or push that tends to produce motion or a change in motion of a material body.

Length

Length is the distance between two points

Define physics using the rule method.

Physics is the study of matter and energy and of relationships between the two.

Define physics using the roster method.

Physics is the study of subjects such as sound, light, mechanics, heat, electricity, magnetism, and nuclear energy.

___ is motion around a fixed axis.

Rotation

Science

Science is the process by which information is collected and organized to make it more easily understood.

If man had complete knowledge of the universe and perfect understanding of the ___, he would find no conflict between them.

Scriptures

What are descriptive sciences?

Subjects that do not lend themselves to experimentation; astronomy is an example

What is the only accurate, unchanging standard for life?

The only standard that has proved accurate and unchanging is the Word of God.

Rotational equilibrium

Whenever the sum of the positive torques equals the sum of the negative torques

torque

a measure of the force that causes rotation

resultant

a single vector that is the sum of two or more vectors

To multiply powers of ten, we ___ the exponents.

add

theta

an angle of unknown value

perpendicular

being at right angles to a line

Units of measurement are always carried throughout the ___.

calulations

neutral stability

center of gravity remains at same height

The mass of a body can often be treated as if it is concentrated at a single point called the ___.

center of mass

The ___ is the number of places that decimal point has been moved.

exponent

The ___ is the number of places the decimal point has been moved.

exponent

Physicists prefer to use ___ rather than the square root radical to represent roots.

fractional exponents

With all the ___ man can measure anything in the universe.

fundamental units of measurement

The standard unit of mass is the ___.

gram

density

grams per cubic centimeter

ay = b/x

hyperbola

If two component vectors forma right triangle, the resultant is the ___ of the triangle.

hypotenuse

Two unrelated variables are ___ variables.

independent

Two variables that are not related are called ___ variables.

independent

arc tangent

inverse of the tangent-the angle that corresponds to a certain tangent

Variables are ___ related if an increase in one variable causes a decrease in the other variable.

inversely

The shortest distance between the fulcrum and the line of a force's action is called the ___.

lever arm distance

momentum

mass times velocity

inexact science

medicine is an example

The standard of length in the metric system is the ___.

meter

velocity

meters per second

acceleration

meters per second squared

A clockwise torque has a ___ value, and a counterclockwise torque has the opposite value.

negative

force

newton or dyne

Number with the same exponent have the same ___.

order of magnitude

ay = bx^0.5

parabola with axis parallel to x axis

ay = bx^2

parabola with axis parallel to y axis

In the Bible God has given fundamental units of law called ___.

principles of life

The ___ allows us to write an equation relating two dependent variables.

proportionality constant

tangent

ratio of opposite side to adjacent side

cosine

ratio of the adjacent side to the hypotenuse

experimental science

relies on experimentation rather than observation alone

order of magnitude

same as the power of ten of a number

fundamental units

seven units of measurement defined by international agreement

A quantity should never be expressed to a greater number of ___ than precision and accuracy indicate.

significant figures

The units on either side of an equal sign must balance after the equation has been ___.

simplified

ay = bx

straight line

tension

the amount of stress in an object caused by a force pulling it in a certain direction

vectors are at right angles to each other

the magnitude of the resultant can be found algebraically by means of the Pythagorean theorm

vertex

the point of intersection of the sides of an angle

fulcrum

the point on which a lever rests or about which an axle turns

sine

the ratio of the opposite side to the hypotenuse

vectors are parallel but in opposite directions

the resultant is the difference of the components and has the direction of the greater component

vectors are parallel and in the same direction

the resultant is the sum of the components and has the same direction

hypotenuse

the side opposite the right angle

trigonometry

the study of triangles

Force and ___ are directly proportional but are not necessarily equal.

torque

concurrent forces

two or more forces whose lines of action intersect at the same point

derived units

units of measurement obtained from the seven fundamental units