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michelin notes > michelin test notes part 1: area and volume, ratios/fractions, right angle trig, electricity theory > Flashcards

michelin test notes part 1: area and volume, ratios/fractions, right angle trig, electricity theory Flashcards

1
Q

area of rectangle

A

lw, units²

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2
Q

area of square

A

l² or lw, units²

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3
Q

area of circle

A

πr², units²

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4
Q

area of cylinder

A

2πrh + 2πr², units²

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5
Q

volume of rectangle

A

lwh, units³

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6
Q

volume of square

A

lwh, units³

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7
Q

volume of cylinders

A

πr²h, units³

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8
Q

volume of circles/spheres

A

4/3πr³, units³

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9
Q

adding fractions

A

mult everything by an lcd then add together and simplify

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10
Q

subtracting fractions

A

mult everything by a lcd then subtract it all then simplify

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11
Q

multiplying fractions

A

mult straight across then simplify

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12
Q

dividing fractions

A

kcf - keep change flip

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13
Q

how to solve for an unknown value in a triangle

A

sohcahtoa

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14
Q

all angles in a triangle add to ___

A

180 degrees

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15
Q

magnetism

A

the force exerted by 2 magnets

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16
Q

ohms law

A

V = IR (voltage = current*resistance)

17
Q

watts law (power law)

A

P = VI (power = voltage*current)

18
Q

what is power

A

the rate of work done/transferred into an electrical circuit, measured in watts

19
Q

voltage

A

the force that drives current through a loop, volts

20
Q

current

A

the flow of charged particles (electrons or ions) moving through a conductor, measured in amps

21
Q

resistance

A

the measure of a force that counteracts a circuit, measured in ohms (Ω)

22
Q

current and voltage are related how

A

proportionally

23
Q

current and resistance are related how

A

inversely

24
Q

resistance and power are related how

A

proportionally

25
Q

resistance and voltage are related how

A

proportionally

26
Q

inductance

A

the tendency of a conductor to resist change in the current flowing through it

27
Q

inductor

A

a component that resists changes in current flow, can also store magnetic energy

28
Q

circuit

A

a complete path of current

29
Q

inductive reactance

A

a measure of an inductors power, measured in ohms

30
Q

DC (direct current)

A

voltage constant, current flows in one direction

31
Q

AC (alternating current)

A

voltage not constant, current can change directions

32
Q

electron definition

A

a subatomic particle with a negative charge that produces electricity when it passes through a conductor

33
Q

what makes a positive/negative
charge

A

more protons than electrons: positive charge/more electrons than protons: negative charge. like charges repel, opposites attract

michelin notes (1 decks)

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