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ASU - PHY 121 - PHY 121 Week 1 Notes (Hill) - Class Notes

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ASU - PHY 121 - PHY 121 Week 1 Notes (Hill) - Class Notes

Description: These notes cover what is happening in the first week of class for PHY 121, and covers the basic equations, terminology, and variable usage for the course.
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University Physics 1 Lecture week #1 Textbook- can be any calculus based university physics textbook, concepts do not
change
Physical theory o A pattern that relates the phenomena of nature
o A very well establish or widely used theory is called a Law or Principle
Fundamental quantities o Length: Meter, m
o Time: Second, s
o Mass: kilogram, kg
o Charge: coulomb, C
No sig fig penalties, but mastering physics might be rude about it Don’t put in the entire ridiculous number from the calculator like
2.473827483284937237492m
o Three sig figs unless otherwise stated to be 4   A x =Acos(theta) A Y =Asin(theta)   A=(A x^ 2+A^2)^1/2, (Theta)=tan^-1(A Y /A x ) Unit vectors o Ĵ is used for the unit vector in the +Y direction
o Î is used for the unit vector in the +X direction
o K is used for the unit vector in the +Z direction
Label vectors as o B y Ex: sin(65)x2=B y o -Cos(65)x2=Bx Displacement: A vector quantity given by the change in the particles position: Delta X=X 2 -X 1 Average velocity: o ΔX/ΔT Instantaneous Velocity: o dX/dT=lim t->0 Δx/Δt Vector: o V Speed: o V
o Average speed=
Distance covered/Δt 774-815

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Description: These notes cover what is happening in the first week of class for PHY 121, and covers the basic equations, terminology, and variable usage for the course.
1 Pages 20 Views 16 Unlocks
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