Equations Flashcards Preview

Physics > Equations > Flashcards

Flashcards in Equations Deck (30)
Loading flashcards...
1
Q

Distance travelled

A

Average speed x time

2
Q

Acceleration

A

Change in velocity/ time taken

A=(v-u)/t

3
Q

Force

A

Mass x acceleration

F = m x a

4
Q

Weight

A

Mass x gravitational field strength

W = m x g

5
Q

Efficiency

A

Useful energy transferred by the device/ total energy supplied to the device

6
Q

Momentum

A

Mass x velocity

p = m x v

7
Q

Wave speed

A

Frequency x wavelength

v = f x lamda

8
Q

Wave speed

A

Distance/time

v = x/t

9
Q

Density

A

Mass/volume

p = m/V

10
Q

Work done

A

Force x distance moved in direction of force

E = F x d

11
Q

Change in gravitational potential energy

A

Mass x gravitational field strength x change in vertical height

Change in GPE = m x g x change in h

12
Q

Kinetic energy

A

1/2 x mass x (speed)2

KE = 1/2 x m x v2

13
Q

Power

A

Work done/ time taken

P = E/t

14
Q

Energy transferred

A

Charge moved x potential difference

E = Q x V

15
Q

Charge

A

Current x time

Q = I x t

16
Q

Potential difference

A

Current x resistance

V = I x R

17
Q

Power

A

Energy transferred/ time taken

P = E/t

18
Q

Electrical power

A

Current x potential difference

P = I x V

19
Q

Electrical power

A

Current squared x resistance

P = I2 x R

20
Q

Force exerted on a spring

A

Spring constant x extension

F = k x x

21
Q

K

A

x10 to the power of 3

22
Q

m

A

x10 to the power of -3

23
Q

M

A

x10 to the power of 6

24
Q

Micro M with line at bottom

A

x10 to the power of -6

25
Q

V = d/t

A

Speed v = 2(pi) r/ t

Speed v = radius / period(time taken for 1 rotation)

26
Q

Determining speed of galaxies

A

(Lambda- lambda with circle)/(lambda with circle) = (velocity)/(speed of light)

= v/c

Change in lambda = lambda - lambda with circle

27
Q

V

A

U + at

28
Q

V2

A

u2 + 2as

29
Q

S

A

(V2 - u2) / 2a

30
Q

V

A

Square root of 2KE/m