Flashcards in Formulas for Test Deck (89)

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1

##
Distance travelled = ?

(Using speed)

###
Average speed x time

D

S T

2

## Average speed = ?

###
Distance / time

D

S T

3

##
Time taken = ?

(Using speed)

###
Distance travelled / average speed

D

S T

4

##
Acceleration = ?

(Using velocity)

###
Change in velocity / time taken

a = (v-u)

——

t

5

##
Acceleration = ?

(Using force)

###
Force / mass

F

M A

6

##
Force = ?

(Using acceleration)

###
Mass x acceleration

F

M A

7

##
Mass = ?

(Using force)

###
Force / acceleration

F

M A

8

##
Weight = ?

###
Mass x gravitational field strength

W

M G

9

##
Mass = ?

(Using weight)

###
Weight / gravitational field strength

W

M G

10

##
Gravitational field strength =?

(Using weight)

###
Weight / mass

W

M G

11

##
Momentum =?

(using velocity)

###
Mass x velocity

P

M V

12

##
Mass = ?

(Using momentum)

###
Momentum / velocity

P

M V

13

##
Velocity =?

(Using momentum)

###
Momentum / mass

P

M V

14

## Change in gravitational potential energy = ?

###
Mass x gravitational field strength x change in vertical height

ΔGPE = m x g x Δh

15

## Kinetic energy = ?

###
½ x mass x (speed squared)

½ x m x v²

16

## Efficiency = ?

###
(Useful energy transferred by the device)

——————————————————

(Total energy supplied to the device)

all x 100% to give the answer as a percentage

17

##
Wave speed =?

(Using wavelength)

###
Frequency x wavelength

V

f λ

18

## Frequency of waves =?

###
Wave speed / wavelength

V

f λ

19

## Wavelength =?

###
Wave speed / frequency

V

f λ

20

##
Wave speed =?

(Using distance)

###
Distance / time

D

V t

21

##
Distance =?

(Using wave speed)

###
Wave speed x time

D

V t

22

##
Time =?

(Using wave speed)

###
Distance / wave speed

D

V t

23

## Change in velocity =?

###
Acceleration x time taken

a = (v-u)

——

t

24

##
Time taken =?

(Using acceleration)

###
Change in velocity / acceleration

a = (v-u)

——

t

25

##
Work done =?

(Using force)

###
Force x distance

Work done

F D

26

##
Force =?

(Using work done)

###
Work done / distance

Work done

F D

27

##
Distance =?

(Using work done)

###
Work done / force

Work done

F D

28

##
Power =?

(using work done)

###
Work done / time taken

Work done

Power t

29

##
Work done =?

(Using power)

###
Power x time taken

Work done

Power t

30

##
Time taken =?

(Using work done)

###
Work done / power

Work done

Power t

31

##
Resistance =?

(using voltage)

###
Voltage / current

V

I R

32

##
Voltage =?

###
current x resistance

V

I R

33

##
Current =?

(using voltage)

###
Voltage / resistance

V

I R

34

## What units must displacement always be in?

### m

35

## What units must velocity always be in?

### m/s

36

## What units must force always be in?

### Newtons (N)

37

## What units must acceleration always be in?

### m/s²

38

## What units must mass always be in?

### Kg

39

## What units must weight always be in?

### Newtons (N)

40

## What units must potential energy (PE) always be in?

### Joules (J)

41

## What units must work done always be in?

### Joules (J)

42

## What units must Kinetic Energy (KE) always be in?

### Joules (J)

43

## What units must Gravitational field strength always be in?

###
Newtons / Kilogram

(N/Kg)

44

## What units must height always be in?

### m

45

## What units must power always be in?

### Watts (W)

46

## What units must momentum always be in?

###
Kilogram metres / seconds

Kgm/s

47

## What units must frequency always be in?

### Hertz (Hz)

48

## What units must wavelength always be in?

### m

49

## What units must current always be in?

### Amps (A)

50

## What units must efficiency always be in?

###
It doesn't have any units

(or %)

51

## What units must potential difference always be in?

### Voltage (V)

52

## What units must resistance always be in?

### Ohms (Ω)

53

## What is the prefix "kilo" (K) in standard form?

### x 10³

54

## What is the prefix "mega" (M) in standard form?

### x 10⁶

55

## What is the prefix "giga" (G) in standard form?

### x 10⁹

56

##
What is the prefix "pico" (p) in standard form?

E.g. Picometre

### x 10⁻¹²

57

##
What is the prefix "nano" (n) in standard form?

E.g. Nanometre

### x 10⁻⁹

58

##
What is the prefix "micro" (μ) in standard form?

E.g. Micrometre

### x 10⁻⁶

59

##
What is the prefix "milli" (m) in standard form?

E.g. Millimetre

### x 10⁻³

60

## What units must temperature always be in?

### °C

61

##
Energy transferred = ?

(using charge moved)

###
charge moved x potential difference

E

Q V

62

## charge moved = ?

###
Energy transferred/ potential difference

E

Q V

63

##
Potential difference = ?

(using energy transferred)

###
Energy transferred / charge moved

E

Q V

64

## charge = ?

###
current x time

Q

I T

65

##
Current = ?

(using charge)

###
charge / time

Q

I T

66

##
time =?

(using charge)

###
Charge / current

Q

I T

67

##
Potential difference=?

(using resistance)

### Current x resistance

68

##
Current =?

(using potential difference)

### potential difference / resistance

69

##
resistance =?

(using potential difference)

### potential difference / current

70

##
power =?

(using energy transferred)

###
energy transferred / time taken

E

P T

71

##
energy transferred =?

(using power)

###
power x time taken

E

P T

72

##
time taken =?

(using power)

###
energy transferred / power

E

P T

73

##
electrical power =?

(using resistance)

###
current squared x resistance

P = I² x R

74

##
current =?

(using electrical power and resistance)

###
square root of (electrical power / resistance)

P = I² x R

75

##
resistance =?

(using electrical power)

###
electrical power / current squared

P = I² x R

76

##
Electrical power =?

(using potential difference)

###
current x potential difference

P

I V

77

##
current =?

(using electrical power and potential difference)

###
electrical power / potential difference

P

I V

78

##
potential difference =?

(using electrical power)

###
electrical power / current

P

I V

79

## density = ?

###
mass / volume

m

ρ v

80

##
mass =?

(using density)

###
density x volume

m

ρ v

81

##
volume =?

(using density)

###
mass / density

m

ρ v

82

##
force =?

(using momentum)

###
change in momentum / time

Δp

F t

83

## change in momentum =?

###
force x time

Δp

F t

84

##
time =?

(using force)

###
change in momentum / force

Δp

F t

85

##
Energy transferred =?

(using current)

### current x potential difference x time

86

## pressure =?

### force normal to surface / area of surface

87

## area of surface =?

### force normal to surface / pressure

88

## force normal to surface =?

### pressure x area of surface

89