(1) Units, Significant Figures, and Order of Magnitude

(1) Units, Significant Figures, and Order of Magnitude -...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: How does Physics work? How does Physics work? Observe and measure Build a model Make a prediction m a t h m a t h m a t h m a t h m a t h m a t h check units SI Units SI Units Length : The meter (1 m = 3.281 ft) Mass : The kilogram (1 kg = 0.06585 slug) Not the same as weight! on Earth 1 kg weighs 2.205 lb on the Moon 1 kg weighs 0.368 lb Time : The second (s) Used by scientific and engineering communities and almost everywhere in the world. Combinations: Unit of speed m/s Unit of force (Newton) is 1 N =1 kg m/s Multiples of Units Multiples of Units 10-24 yocto- y 10-21 zepto- z 10-18 atto- a 10-15 femto- f 10-12 pico- p 10-9 nano- n 10-6 micro- 10-3 milli- m 10-2 centi- c 10 3 kilo- k 10 6 mega- M 10 9 giga- G 10 12 tera- T 10 15 peta- P 10 18 exa- E 10 21 zetta- Z 10 24 yotta- Y Formal conversion of units: Multiply by the appropriate representation of 1 to cancel the unwanted units away: eg. convert 10 mph into m/s = = mile 1 m 1609 s 3600 h 1 h mile 10 h mile 10 m/s 47 . 4 = Example...
View Full Document

Page1 / 10

(1) Units, Significant Figures, and Order of Magnitude -...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online