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## Welcome to Physics!!! Physics is Why Study Science To solve fundamental problems Underst in addition to our future world

Coggshall, William, Founder has reference to this Academic Journal, PHwiki organized this Journal Welcome to Physics!!! The most mathematical of all the sciences The study of the Universe on all levels (Particles less than 10-16 to greater than 1024 in the Cosmos) What Physicists Do Physics is Why Study Science To solve fundamental problems Underst in addition to our future world Improve quality of life Physics is Phun!

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Mechanics The Study of Motion in addition to its causes : Newton’s Laws of Motion Mechanics are understood in basic units of measurements of length, mass, in addition to time. Measurements in Metrics (SI = International System of Units) Measurements Scientific Notation 2.37 X 107 m Unit Power of Ten 0 < y < 10 (minimum 2 places behind decimal) EE EXP or Button on Calculator The calculator will be your best friend in physics. Never as long as get it!!!! Especially on Test day!!! Rules as long as Scientific Notation Calculations Addition in addition to Subtraction Must have same exponents Must have the same units Ex. a) 5 x 107 m + 3 x 107 m = - b) 6.2 x 10-3 m 2.8 x 10-3 m = - Multiplication Add exponents Treat units as products Ex. a) (3 x 106 m)(2 x 103 m) = -- b) (2 x 10-5 m)(4 x 109 m) = - c) (4 x 103 kg)(5 x 1011 kg) = - d) (4 x 103 kg)(5 x 1011 m) = - Division Subtract exponents Carry units or cancel out when possible Ex. a) 8 x 106 m = - m/sec 2 x 103 sec b) 8 x 106 kg = - kg/m 2 x 104 m c) 9 x 106 m2 = - m 4.5 x 107 m Powers Multiply exponents Square or cube the number in addition to measurements (units) Ex. a) (3 x 102 m)2 = - b) (2 x 102 m)3 = - Products of variables in Formulas (Length)(Length) = Area (m2 or cm2) (Length)(Length)(Length) or (Length)(Width)(Height) = Volume (m3 or cm3) Length = Distance = d = Speed or Velocity time time t Units:(km/hr or m/sec) mass = Density (g/ml or g/cm3) Volume Use conversion factors like fractions! Ex. 55mi = km 55mi (1.61km) = hr hr hr ( 1 mi ) Ex. 55mi = m 55mi (1 hr) (1610 m) = hr sec hr (3600 sec) (1 mi) Ex. How many cm3 in a qt 1Qt (.986 L)(1000 ml)(1cm3) = (1 qt) (1L) (1ml) Conversion Review Examples Ex. If a cylinder has a radius of 156 mm in addition to a length of 8.7cm, How many m3 does it contain => Any variable in an algebraic as long as mula can be replaced by a number in addition to its units. This makes the quantities in as long as mulas become real world measurements. => Any variable in a as long as mula can be isolated: Formula Rearrangement Ex. D = m D v = m V = m v D

## Coggshall, William Founder

Coggshall, William is from United States and they belong to Pacific Media Associates and they are from Mountain View, United States got related to this Particular Journal. and Coggshall, William deal with the subjects like Audio/Video Technology; Multimedia Computing; Software Applications

## Journal Ratings by Strayer University-Columbia Campus

This Particular Journal got reviewed and rated by Strayer University-Columbia Campus and short form of this particular Institution is SC and gave this Journal an Excellent Rating.