Maths/Physics

Question 1

Multiply decimals

Answer 1

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

Question 2

Find a% of b

Answer 2

(a x b)/100

Question 3

Express 0.000a as a fraction

Answer 3

a/10000

Question 4

Express 0.aaaaa etc as a fraction

Answer 4

a/9

Question 5

Express 0.ababab etc as a fraction

Answer 5

ab/99

Question 6

Convert a/b into a percentage

Answer 6

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

Question 7

Convert a% into a fraction

Answer 7

a/100

Question 8

Convert 0.a into a percentage

Answer 8

0.a x 100 = a0%

Question 9

Convert a% into a decimal

Answer 9

a/100 = 0.0a

Question 10

What is a HCF?

Answer 10

Highest Common Factor; highest numeral both numbers will divide into

Question 11

What is a LCM?

Answer 11

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

Question 12

What are Prime Factors?

Answer 12

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

Question 13

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

Answer 13

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

Question 14

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

Answer 14

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

Question 15

n^a x n^b =

Answer 15

n^a+b

Question 16

n^a ÷ n^b =

Answer 16

n^a-b

Question 17

(n^a)^b =

Answer 17

n^axb

Question 18

+/- numbers in standard index form

Answer 18

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

Question 19

x/÷ numbers in standard index form

Answer 19

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

Question 20

n⁰ =

Answer 20

1

Question 21

n^1/a =

Answer 21

_a/^—n

Question 22

n^-a =

Answer 22

1/n^a

Question 23

Circumference formula?

Answer 23

C=2πr

or

C=2d

Question 24

Area of a circle formula?

Answer 24

A = πr²

Question 25

Area of a sector?

Answer 25

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

Question 26

Perimeter of sector?

Answer 26

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

Question 27

Length of arc?

Answer 27

= πd x sector angle ÷ 360

Question 28

Pythagorus theorum?

Answer 28

a² + b² = c^{2 where c is the longest side}

Question 29

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

Answer 29

Sin = O/H Cos = A/H Tan = O/A

Question 30

1NM in feet?

Answer 30

6080ft

Question 31

6080ft = 1?

Answer 31

NM

Question 32

1km in feet?

Answer 32

3280ft

Question 33

3280ft = 1?

Answer 33

km

Question 34

1 statute mile in feet

Answer 34

5280ft

Question 35

5280ft = 1?

Answer 35

Statute mile

Question 36

°C to °F conversion

Answer 36

°C x 1.8 + 32 = °F

Question 37

Kg → Lb

Answer 37

x 2.2

Question 38

US Gallons → Litres

Answer 38

x 3.8

Question 39

Imperial gallon → Kg | (Jet A1 Fuel)

Answer 39

x 3.6

Question 40

Imperial gallons → Litres | (Jet A1 Fuel)

Answer 40

x 4.5

Question 41

Litres → Lbs | (Jet A1 Fuel)

Answer 41

x 1.76

Question 42

hPa → inHg

Answer 42

x 0.0295

Question 43

Mega = 1 x 10^?

Answer 43

6

Question 44

Kilo = 1 x 10^?

Answer 44

3

Question 45

Centi = 1 x 10^?

Answer 45

-2

Question 46

Milli = 1 x 10^?

Answer 46

-3

Question 47

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

Answer 47

Infrared Electromagnetic

Question 48

Absorbing/emitting radiation: matt/dark \_\_\_\_\_\_ shiny/light\_\_\_\_\_\_

Answer 48

good bad

Question 49

1 Hz = 1 wave per \_\_\_\_\_\_\_

Answer 49

Second

Question 50

Wave speed formula?

Answer 50

v = wavelength x frequency

Question 51

Angle of reflection = ?

Answer 51

Angle of incidence

Question 52

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

Answer 52

Towards

Question 53

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

Answer 53

Away from

Question 54

What is potential difference in terms of current and resistence?

Answer 54

V = IR

Question 55

What is power in terms of current and potential difference?

Answer 55

P = IV

Question 56

What is power in terms of current and resistance?

Answer 56

P = I²R