Textbook Notes (368,317)
United States (206,003)
Physics (264)
PHYS 031 (36)
Jie Yang (4)
Chapter 3

Phys 031 Chapter 3.docx

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Department
Physics
Course
PHYS 031
Professor
Jie Yang
Semester
Spring

Description
Chapter 3: Vectors and Coordinate Systems o For a vector A o Its magnitude is the absolute value of the vector A o C does not equal A + B o C² = A² + B² in special cases o *C = (A² + B²)^(1/2) * = square root of A² + B² o *Unit vectors ^i & ^j * = i-hat and j-hat o C = ((+unit)^i+(+unit)^j) o The absolute value of i-hat = 1 and j-hat = 1 o Unit vectors have magnitude 1 and no units; they define the directions of the x and y axes of a coordinate system o A
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