# Shared Flashcard Set

## Details

Physics Final Sem 1
final
65
Physics
12/19/2012

Term
 what is the metric system based on?
Definition
 constants and units of measurements based on powers of ten
Term
 What is the SI Unit for length?
Definition
 meters
Term
 What is the SI Unit for time?
Definition
 seconds
Term
 What is the SI Unit for Mass?
Definition
 Kilograms
Term
 What is the SI Unit for Temperature?
Definition
 Kelvins
Term
 What is the SI Unit for Measurement of Force?
Definition
 Newtons
Term
 What is the symbol and the power of the prefix pico?
Definition
 p (-12)
Term
 What is the symbol and the power of the prefix nano?
Definition
 n (-9)
Term
 What is the symbol and the power of the prefix micro?
Definition
 μ (-6)
Term
 What is the symbol and the power of the prefix milli?
Definition
 m (-3)
Term
 What is the symbol and the power of the prefix centi?
Definition
 c (-2)
Term
 What is the symbol and the power of the prefix kilo?
Definition
 k (3)
Term
 What is the symbol and the power of the prefix mega?
Definition
 M (6)
Term
 What is the symbol and the power of the prefix Giga ?
Definition
 G (9)
Term
 What is the symbol and the power of the prefix tera?
Definition
 T (12)
Term
 what do prefixes tell you to do to a number?
Definition
 to multiply or divide by a power of ten
Term
 what is scientific notation based on?
Definition
 powers of ten
Term
 what is scientific notation most useful for?
Definition
 very large and very small numbers
Term
 what is the standard equation for scientific notation?
Definition
 (leading value x 10 ^constant )
Term
 What is the leading value in scientific notation?
Definition
 number between 1 and 10 made by moving the decimal back and fourth
Term
 what is the exponent in scientific notation?
Definition
 the number of places you moved the decimal point
Term
 what is acceleration?
Definition
 the change in velocity of an object
Term
 what is the equation for acceleration?
Definition
 a= (change in velocity/ elapsed time)
Term
 what do you get when you directly read a P/T graph?
Definition
 position (x)
Term
 what do you get when you directly read a V/T graph?
Definition
 Velocity
Term
 what do you get when you directly read a A/T graph?
Definition
 Acceleration
Term
 what does the slope of a P/T graph signify?
Definition
 Velocity
Term
 what does the slope of a V/T graph signify?
Definition
 Acceleration
Term
 what does the slope of a A/T graph signify?
Definition
 you don't know
Term
 what is the area under a P/T graph signify?
Definition
 you don't know
Term
 what is the area under a V/T graph signify?
Definition
 displacement (delta X)
Term
 what is the area under a A/T graph signify?
Definition
 change in velocity (Delta V)
Term
 how is position typically Specified?
Definition
 Coordinates
Term
 what is S.O.H.C.A.H.T.O.A.?
Definition
Term
 why do we use numbers and graphs?
Definition
 to analyze motion with precision and consistency
Term
 what is displacement?
Definition
 change in position
Term
 what is the equation for displacement?
Definition
 ∆x=velocity final - velocity initial
Term
 what is a vector?
Definition
 a quantity with direction and magnitude
Term
 what is the velocity equation?
Definition
 v= displacement / time
Term
 what is a scalar quantity?
Definition
 only how much no direction (temperature or distance)
Term
 what must the length of a vector arrow be proportional to?
Definition
 magnitude
Term
 what is rectangular notation?
Definition
 defining a vector by its components
Term
 what is the Cartesian method?
Definition
 defining a vector by its x and y
Term
Definition
 place the tail of the second vector at the head of the first vector. draw a new vector from the tail of the first vector to the head of the second vector, this vector is the sum.
Term
 how does one subtract vectors?
Definition
 take the opposite the vector that is being subtracted and add A+B=(Ax+Bx, Ay+By)
Term
 what is polar notation?
Definition
 defining a vector by its angle and magnitudeV=magnitude and delta= angle (V.delta)
Term
 what does a positive angle indicate in polar notation?
Definition
 counterclockwise direction
Term
 what does a negative angle indicate in polar notation?
Definition
 clockwise direction
Term
 how does one find velocity in 2 dimensions?
Definition
 analyze x and y components separately the sum of both equals the velocity of the object
Term
 what is the equation for velocity in the x direction for velocity in 2 dimensions?
Definition
 Vx=v(cos)delta
Term
 what is the equation for velocity in the y direction for velocity in 2 dimensions?
Definition
 Vx=v(sin)delta
Term
 what is the equation for average acceleration?
Definition
 Average acceleration = change in velocity / change in time
Term
 what is projectile motion?
Definition
 movement determined by an objects initial velocity and the constant acceleration of gravity
Term
 what is force?
Definition
 pushing or pulling
Term
 what is net force?
Definition
 the total sum of all vector forces acting upon an object
Term
 what is newtons first law?
Definition
 an object remains at rest, or maintaining a constant velocity unless a net external force acts upon it
Term
 what is mass?
Definition
 a property of an object that determines how much it will resist a change in velocity
Term
 what is weight?
Definition
 the force of gravity upon an object
Term
 what is newtons second law?
Definition
 F=m*a
Term
 what is newtons third law?
Definition
 for every action there is an equal and opposite reaction
Term
 what is normal force?
Definition
 force perpendicular to the surface of an object
Term
 what is tension?
Definition
 force exerted on a string, chord, etc.
Term
 what is a free body diagram?
Definition
 a representation of all external forces acting upon an object
Term
 what is friction?
Definition
 a force that resists motion of one object sliding upon another.
Term
 what is hooks law used for?
Definition
 see the amount of force a spring exerts
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