PHY 101: Chapter 1 Studyguide
17 Cards in this Set
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What are the SI units for length, Mass, and Time
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Length- meter (m)
Mass- Kilograms (kg)
Time- Seconds (s)
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Quarks. What are the charge values? What is the proton and neutron made up of?
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Particles that make up an atom. They have the names up, down, strange, charm, bottom and top. The charge values are +2/3 for up charm and top and - 1/3 for the down strange and bottom. The proton has 2 ups and one down and the neutron has 2 down and one up.
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Brackets around a letter notate what?
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a dimension. [v] is volume. [A] is area
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When multiplying and dividing two or more quantities the final product is the same of the number of significant figures in the _____ _______ factors of being combined.
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Least accurate. This means that the answer matches the number with the lowest significant figures. SMALLEST NUMBER OF SIG FIGS
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When adding or subtracting involving sig figs what do we want to keep the same in the problem?
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The number of fewest decimal places
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Cartesian coordinate system
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(x and y) with an origin
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Plane polar coordinates
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(r, theta) The r is the distance from the origin and the theta (angle value) is the angle away from the reference line.
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When trying to see if an equation fits dimensional analysis what are you looking at?
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To see if both sides have the same dimensions such as L/T= L/T + L/T
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acceleration=
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Change in velocity/time
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Velocity=
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distance over time
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When letters are in brackets this means were looking at their _________ what are they for [a], [v], [x]
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Dimensions. [a]= L/T^2 [v]= L/T and [x]= L because it is simply a point
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sin theta=
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Opposite side/ hypotenuse O/H
SOH
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Cos theta=
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A/H adjacent over hypot
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tan theta=
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O/A opposite/adjacent
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pythagorean theorem?
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a^2+b^2=C^2
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When an angle is in the third quadrent what must be done to it?
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add 180
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When an angle is in the second quadrent what must be done to it to bring it back to the first quadrent measurement?
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Subtract 180 degrees
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PHY 101: Chapter 1