Chapter01

# Chapter01 - Chapter1 Units,PhysicalQuantities,and Vectors...

This preview shows pages 1–6. Sign up to view the full content.

Chapter 1 Units, Physical Quantities, and  Vectors

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

View Full Document
3. Standards and Units SI ( Système International (french)) unit (or MKS unit) Time in s (second) Length in m (meter) Mass in kg An equation must be dimensionally consistent (be sure you’re “adding apples to apples”). “Have no naked numbers” (always use units in calculations).
4.  Uncertainty and Significant  Figures Significant figures : all the digits that are known accurately + one estimated digit

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

View Full Document
Rules Nonzero digits are always significant. Final or ending zeros to the right of the decimal point are significant. Zeros written to the right of the decimal point for the purpose of spacing the decimal point are not significant. Zeros written between significant figures are significant. Examples 409.9 s ( ), 0.058700 cm ( ), 9500 g ( ), 950.0 × 10 1 mL ( ) 0.0001054 kg ( ), 0.005800 cm ( ), 602000 s ( ) When ambiguous, use the scientific notation.
7. Vectors and vector addition Vector quantity has a magnitude and a direction :

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern