Maths/Physics Flashcards

Question 1

Q

Multiply decimals

Answer

A

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

Question 2

Q

Find a% of b

Answer

A

(a x b)/100

Question 3

Q

Express 0.000a as a fraction

Question 4

Q

Express 0.aaaaa etc as a fraction

Question 5

Q

Express 0.ababab etc as a fraction

Question 6

Q

Convert a/b into a percentage

Answer

A

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

Question 7

Q

Convert a% into a fraction

Question 8

Q

Convert 0.a into a percentage

Answer

A

0.a x 100 = a0%

Question 9

Q

Convert a% into a decimal

Answer

A

a/100 = 0.0a

Question 10

Q

What is a HCF?

Answer

A

Highest Common Factor; highest numeral both numbers will divide into

Question 11

Q

What is a LCM?

Answer

A

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

Question 12

Q

What are Prime Factors?

Answer

A

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

Question 13

Q

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

Answer

A

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

Question 14

Q

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

Answer

A

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

Question 15

Q

n^ax n^b =

Question 16

Q

n^a ÷ n^b=

Question 17

Q

(n^a)^b=

Question 18

Q

+/- numbers in standard index form

Answer

A

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

Question 19

Q

x/÷ numbers in standard index form

Answer

A

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

Question 20

Q

n⁰ =

Question 21

Q

n^1/a =

Question 22

Q

n^-a=

Question 23

Q

Circumference formula?

Answer

A

C=2πr

or

C=2d

Question 24

Q

Area of a circle formula?

Answer

A

A = πr²

Question 25

Q

Area of a sector?

Answer

A

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

Question 26

Q

Perimeter of sector?

Answer

A

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

Question 27

Q

Length of arc?

Answer

A

= πd x sector angle ÷ 360

Question 28

Q

Pythagorus theorum?

Answer

A

a² + b² = c²

^{where c is the longest side}

Question 29

Q

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

Answer

A

Sin = O/H

Cos = A/H

Tan = O/A

Question 30

Q

1NM in feet?

Question 31

Q

6080ft = 1?

Question 32

Q

1km in feet?

Question 33

Q

3280ft = 1?

Question 34

Q

1 statute mile in feet

Question 35

Q

5280ft = 1?

Answer

A

Statute mile

Question 36

Q

°C to °F conversion

Answer

A

°C x 1.8 + 32 = °F

Question 37

Q

Kg → Lb

Question 38

Q

US Gallons → Litres

Question 39

Q

Imperial gallon → Kg

(Jet A1 Fuel)

Question 40

Q

Imperial gallons → Litres

(Jet A1 Fuel)

Question 41

Q

Litres → Lbs

(Jet A1 Fuel)

Question 42

Q

hPa → inHg

Question 43

Q

Mega = 1 x 10^?

Question 44

Q

Kilo = 1 x 10^?

Question 45

Q

Centi = 1 x 10^?

Question 46

Q

Milli = 1 x 10^?

Question 47

Q

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

Answer

A

Infrared

Electromagnetic

Question 48

Q

Absorbing/emitting radiation:

matt/dark ______

shiny/light______

Question 49

Q

1 Hz = 1 wave per _______

Question 50

Q

Wave speed formula?

Answer

A

v = wavelength x frequency

Question 51

Q

Angle of reflection = ?

Answer

A

Angle of incidence

Question 52

Q

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

Question 53

Q

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

Answer

A

Away from

Question 54

Q

What is potential difference in terms of current and resistence?

Question 55

Q

What is power in terms of current and potential difference?

Question 56

Q

What is power in terms of current and resistance?