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Physics > Electricity and forces equations > Flashcards

Electricity and forces equations Flashcards

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1
Q

Acceleration

Given mass

A

F=ma

F= force - (newtons)
M= mass - (kilograms)
A= acceleration ( meters per second squared)
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2
Q

Power

A 
Power= potential difference x current 
P=V x I
Power - watts
Potential difference- volts
Current - amps
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3
Q

Charge flow

A

Charge flow = current x time

Q= I xT

Charge- coulombs
Current- amps
Time- seconds

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4
Q

Potential difference

A 
Potential difference= current x resistance 
V= I x R
Potential difference- volts 
Current- amps 
Resistance- ohms
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5
Q

Energy

Given time

A 
Energy = power x time
E= P x T
Energy- joules 
Power- watts 
Time- seconds
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6
Q

Energy

Given potential difference

A

Energy= charge x potential difference

E=QxV

Energy-joules
Charge-coulombs
Potential difference-volts

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7
Q

Change in thermal energy

A

Change in thermal energy = mass x temp change x specific heat capacity

Change in thermal energy- joules
Mass- kg
Specific heat capacity- J/kg°c
Change in temp- °c

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8
Q

Power

Given current

A 
Power = current^2 x resistance
 P = I^2xR
Power-watts
Current- amps
Resistance - ohms
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9
Q

Density

A 
Density= mass/volume
P=M/V
Density- kg/m^3
Mass- kg
Volume- m^3
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10
Q

Change in thermal energy

A

Change in thermal energy= mass x specific heat capacity x temperature change

Change in thermal energy- joules
Mass- kg
Specific heat capacity- J/kg°C
Temperature change- °C

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11
Q

Energy

Latent

A

E= ML

Energy = mass x specific latent heat

E- joules
M- kilograms
L- J/kg

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12
Q

Weight

A

Weight = mass x gravitational field strength

Weight - newtons
Mass - kilograms
Gravitational field strength- N/kg

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13
Q

Work done

A

W = fs

Work done = force x distance

Work done- joules
Force- newtons
Distance- meters

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14
Q

Force

extension

A

F = ke

Force = spring constant x extension

Force - newtons
Spring constant - N/m
Extension- meters

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15
Q

Elastic potential energy

A

E = 0.5 x k x e^2

E = 0.5 x spring constant x extension^2

Elastic potential energy - joules
Spring constant - N/m
Extension - meters

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16
Q

Distance

A

V= s/t

Speed = distance/ time

V - speed
S- distance
T - time

17
Q

Acceleration

A

a= change in velocity / t

acceleration = change in velocity/time

Acceleration- meters per second^2
Change in velocity- meters per second
Time- seconds

18
Q

Acceleration

Given Distance

A

V^2 - u^2 = 2 x a x s

Final velocity^2 - initial velocity^2 = 2 x acceleration x time

Velocity - meters per second
Acceleration - meters per second^2
Distance - meters

19
Q

Momentum

A

P = m x v

Momentum = mass x velocity

Momentum - kg m/s
Mass - kg
Velocity- meters per second

Physics (8 decks)

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