Unit factor practice Dr. Robert M. MacKay Clark College Physics Clark College.

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Presentation transcript:

Unit factor practice Dr. Robert M. MacKay Clark College Physics Clark College

Conversion of Units How many centimeters are in 2.50 kilometer? Write down know value draw a line to separate numerator from denominator use a unit factor conversion to go from one unit to next use unit analysis to keep track of units

Conversion of Units How many centimeters are in 2.50 kilometer? 2.50 km

Conversion of Units How many centimeters are in 2.50 kilometer? 2.50 km 1000m 1.00 km

Conversion of Units How many centimeters are in 2.50 kilometer? 2.50 km 1000m 1.00 km 100 cm 1.00m = 2.50x10 5 cm

Conversion of Units How many cm 3 are in 300 in 3 kilometer? 300 in3

Conversion of Units How many cm 3 are in 300 in 3 kilometer? 300 in 3 (1.00 in) 3 (2.54 cm) 3

Conversion of Units How many cm 3 are in in 3 kilometer? in in cm 3 = 4916 cm 3

Conversion of Units What is the volume in m 3 of a rectangular cube that has dimensions of: L= in W= 30.0 in h= 25.7 in? Hint: 1.00 m =3.28 ft

Conversion of Units How many miles per hour is 40 m/s?

Conversion of Units How many miles per hour is 40 m/s?

Conversion of Units How many miles per hour is 40 m/s?

Conversion of Units How many kcal are in 3.00x10 8 kWh? J=1 cal 3.60x10 6 J =1.00 kWh