health advice for healthy living

CALCULATER
http://dearbornschools.org/schools/dcmst/staff/whittaker/scicalc.htm
STOPWATCH
http://www.physicslessons.com/stopw.htm
UNIT CONVERTER
http://www.physicslessons.com/
SI Prefixes

Multiple
Prefix
Symbol
Common Name

1018
exa
E
quintillion

1015
peta
P
quadrillion

1012
tera
T
trillion

109
giga
G
billion

106
mega
M
million

103
kilo
k
thousand

102
hecto
h
hundred

101
deca
da
ten

10-1
deci
d
tenth

10-2
centi
c
hundreth

10-3
milli
m
thousandth

10-6
micro
u (Greek mu)
millionth

10-9
nano
n
billionth

10-12
pico
p
trillionth

10-15
femto
f
quadrillionth

10-18
atto
a
quintillionth

GLOSSARY
*aberration The unavoidable distortion in an image produced by a lens.
*absolute value The numerical value of a real number, with no positive or minus sign. Absolute values are written with neither +/-. They are treated as positive numbers since it is assumed that numbers without signs are positive. The […]

Degrees: Measuring Angles
We measure the size of an angle using degrees.
Example: Here are some examples of angles and their degree measurements.

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__________  
Acute Angles
An acute angle is an angle measuring between 0 and 90 degrees.
Example:
The following angles are all acute angles.

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_
_
_
_
-
-
_
_
_
_  
Obtuse Angles
An obtuse angle is an angle measuring between 90 and 180 degrees.
Example:
The following angles are all […]