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what are the three main physical quantities used in mechanics 

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length (L), mass (M), time (T) 


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what is the definition of the meter 

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the meter is defined as the distance is takes light to travel in a vacuum during a time interval of 1/ 299 792 458 seconds 


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strong evidence indicates that protons, neutrons and electrons are composed of six smaller particles called quarks 


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what are the SI units for area L^(2) 

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what are the SI units for volume L^(3) 

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what are the SI units for velocity (L/T) 

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what are the SI units for acceleration (L/T^(2)) 

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work the problem (1.20e^(5) x 2e^(5))+1e^(3)= 

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when multiplying two or more quantites, the number of significant figures in the final product is 

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the same as the least accurate factors being combined, that is, the least accurate is the one with the least amount of significant figures 


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when numbers are added, the number of decimal places in the final answer are 

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equal to the smallest number of decimal places of any term in the sum 


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what is 123 + 5.35, mind the significant figures 

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what does it mean to increase a quantity by three orders of magnitude 

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give two examples of coordinate systems 

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cartesian coordinate system & plane polar coordinates 


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opposite theta/hypotenuse
y/r 


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side adjacent to theta/hypotenuse
x/r 


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opposite theta/adjacent to theta
y/x 


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what is the pythagorean theorem 

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