# Equations

Studied by 38 people
5.0(1)
get a hint
hint

density (kg/m³)

1 / 27

## Tags and Description

### 28 Terms

1

density (kg/m³)

mass (kg) / volume (m³)

New cards
2

change in thermal energy (J)

mass (kg) x specific heat capacity (J/kg°C) x change in temperature (°C)

New cards
3

thermal energy for change in state (J)

mass (kg) x specific latent heat (J/kg)

New cards
4

Boyle’s law

pressure (Pa) x volume (m³) = constant

New cards
5

pressure due to a column of liquid (Pa)

height of column (m) x density of liquid (kg/m³) x gravitational field strength (N/kg)

New cards
6

suvat

(final velocity (m/s))² - (initial velocity (m/s))² = 2 x acceleration (m/s²) x distance (m)

New cards
7

distance (m)

speed (m/s) x time (s)

New cards
8

acceleration (m/s²)

change in velocity (m/s) / time (s)

New cards
9

kinetic energy (J)

½ x mass (kg) x (velocity (m/s))²

New cards
10

force (N)

mass (kg) x acceleration (m/s²)

New cards
11

momentum (kgm/s)

mass (kg) x velocity (m/s)

New cards
12

work done (J)

force (N) x distance (m) → distance needs to be along the line of action of the force

New cards
13

power (W)

energy (J) / time (s)

work done (J) / time (s)

current (A) x voltage (V)

(current (A))² x resistance (Ohms)

New cards
14

energy transferred in stretching (J)

½ x spring constant (N/m) x (extension (m))²

New cards
15

force exerted by a spring (N)

spring constant (N/m) x extension (m)

New cards
16

weight (N)

mass (kg) x gravitational field strength (N/kg)

New cards
17

gravitational potential energy (J)

mass (kg) x gravitational field strength (N/kg) x height (m)

New cards
18

pressure (Pa)

force normal to the surface (N) / area of the surface (m²)

New cards
19

moment (Nm)

force (N) x distance normal to the direction of the force (m)

New cards
20

charge flow (C)

current (A) x time (s)

New cards
21

potential difference (V)

current (A) x resistance (Ohms)

New cards
22

electrical energy transferred (J)

charge (C) x potential difference (V)

New cards
23

energy transferred (J, kWh)

power (W, kW) x time (s, h)

New cards
24

force on a conductor (at right angles to a magnetic field) carrying a current (N)

magnetic field strength (T) x current (A) x length (m)

New cards
25

transformers

v(primary) / v(secondary = n(primary) / n(secondary)

New cards
26

wave speed (m/s)

frequency (Hz) x wavelength (m)

New cards
27

efficiency

useful output energy transfer / total input energy transfer

New cards
28

P8.2

v(primary) x I(primary) = v(secondary) x I(secondary)

New cards

## Explore top notes

Note
Studied by 12 people
Updated ... ago
4.0 Stars(1)
Note
Studied by 89 people
Updated ... ago
5.0 Stars(3)
Note
Studied by 9 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 16 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 1 person
Updated ... ago
5.0 Stars(1)
Note
Studied by 14 people
Updated ... ago
5.0 Stars(2)
Note
Studied by 3 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 118934 people
Updated ... ago
4.9 Stars(596)

## Explore top flashcards

Flashcard33 terms
Studied by 241 people
Updated ... ago
4.7 Stars(3)
Flashcard25 terms
Studied by 4 people
Updated ... ago
5.0 Stars(1)
Flashcard20 terms
Studied by 2 people
Updated ... ago
4.0 Stars(1)
Flashcard38 terms
Studied by 6 people
Updated ... ago
5.0 Stars(1)
Flashcard60 terms
Studied by 28 people
Updated ... ago
5.0 Stars(3)
Flashcard20 terms
Studied by 24 people
Updated ... ago
5.0 Stars(2)
Flashcard81 terms
Studied by 11 people
Updated ... ago
5.0 Stars(1)
Flashcard20 terms
Studied by 1062 people
Updated ... ago
4.5 Stars(19)