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ATPL > Maths/Physics > Flashcards

Maths/Physics Flashcards

1
Q

Multiply decimals

A

Total number of decimal points in all numbers. Multiply as whole numbers then insert decimal point to match total.

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2
Q

Find a% of b

A

(a x b)/100

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3
Q

Express 0.000a as a fraction

A

a/10000

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4
Q

Express 0.aaaaa etc as a fraction

A

a/9

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5
Q

Express 0.ababab etc as a fraction

A

ab/99

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6
Q

Convert a/b into a percentage

A

a/b x 100/1 = (100a)/b%

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7
Q

Convert a% into a fraction

A

a/100

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8
Q

Convert 0.a into a percentage

A

0.a x 100 = a0%

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9
Q

Convert a% into a decimal

A

a/100 = 0.0a

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10
Q

What is a HCF?

A

Highest Common Factor; highest numeral both numbers will divide into

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11
Q

What is a LCM?

A

Lowest Common Multiple; the lowest numeral both numbers will multiply into

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12
Q

What are Prime Factors?

A

The smallest prime numerals that can be multiplied together to make the number. e.g 2x2x2x3=24

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13
Q

Use Prime Factors to calculate HCF of A=axaxb and B=axbxc

A

HCF=axb (multiply together those that appear in both)

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14
Q

Use Prime Factors to calculate LCM of A=axaxb and B=axbxc

A

LCM=axaxbxc (multiply together the most frequent of each prime factor)

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15
Q

na x nb =

A

na+b

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16
Q

na ÷ nb =

A

na-b

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17
Q

(na)b =

A

naxb

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18
Q

+/- numbers in standard index form

A

convert to ordinary number, calculate, convert back to standard form

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19
Q

x/÷ numbers in standard index form

A

x/÷ numbers then apply indices rule to get the power of 10

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20
Q

n0 =

A

1

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21
Q

n1/a =

A

a/—n

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22
Q

n-a =

A

1/na

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23
Q

Circumference formula?

A

C=2πr

or

C=2d

24
Q

Area of a circle formula?

A

A = πr2

25
Q

Area of a sector?

A

Area of sector = Area of circle x sector angle ÷ 360

26
Q

Perimeter of sector?

A

Perimeter of sector = (C x sector angle) ÷ 360 + 2r

27
Q

Length of arc?

A

= πd x sector angle ÷ 360

28
Q

Pythagorus theorum?

A

a2 + b2 = c2

where c is the longest side

29
Q

Sin, Cos and Tan in terms of opposite, adjacent and hypotenuse?

A

Sin = O/H

Cos = A/H

Tan = O/A

30
Q

1NM in feet?

A

6080ft

31
Q

6080ft = 1?

A

NM

32
Q

1km in feet?

A

3280ft

33
Q

3280ft = 1?

A

km

34
Q

1 statute mile in feet

A

5280ft

35
Q

5280ft = 1?

A

Statute mile

36
Q

°C to °F conversion

A

°C x 1.8 + 32 = °F

37
Q

Kg → Lb

A

x 2.2

38
Q

US Gallons → Litres

A

x 3.8

39
Q

Imperial gallon → Kg

(Jet A1 Fuel)

A

x 3.6

40
Q

Imperial gallons → Litres

(Jet A1 Fuel)

A

x 4.5

41
Q

Litres → Lbs

(Jet A1 Fuel)

A

x 1.76

42
Q

hPa → inHg

A

x 0.0295

43
Q

Mega = 1 x 10?

A

6

44
Q

Kilo = 1 x 10?

A

3

45
Q

Centi = 1 x 10?

A

-2

46
Q

Milli = 1 x 10?

A

-3

47
Q

Thermal Radiation and _______ Radiation are the same thing. They are both forms of _______ radiation.

A

Infrared

Electromagnetic

48
Q

Absorbing/emitting radiation:

matt/dark ______

shiny/light______

A

good

bad

49
Q

1 Hz = 1 wave per _______

A

Second

50
Q

Wave speed formula?

A

v = wavelength x frequency

51
Q

Angle of reflection = ?

A

Angle of incidence

52
Q

A wave hitting a denser material will defract ______ the normal.

A

Towards

53
Q

A wave hitting a less dense material will defract ______ the normal

A

Away from

54
Q

What is potential difference in terms of current and resistence?

A

V = IR

55
Q

What is power in terms of current and potential difference?

A

P = IV

56
Q

What is power in terms of current and resistance?

A

P = I2R

ATPL (5 decks)

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