Equations paper 1 Flashcards
What is the equation for kinetic energy
Ek = 1/2x M x V2
Ek- Joules
m- Kg
v- M/S
Kinetic energy = 1/2 x Mass x speed(2)
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What is the equation for gravitational potential energy
Ep= mgh
Ep- J
m- KG
g- N/kg
h- M
Gravitational potential energy = mass x gravitational field strength x Height
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What is the equation for Change in thermal energy
/\E = mc/\0
/- J
m- kg
c- J/KG
/- 0C
Change in thermal energy = Mass x specific heat capacity x change in heat
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What is the equation for power
- Energy and Work done are interchangeable
P= E // t Power
P- W
E- Energy
t- time
Power = Energy// Time
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What is the equation for energy efficiency
Efficiency+ Useful energy out// Total energy in
What is the equation for Charge
Q= It
Charge = current x time
Charge- Coulombs
Current- volts
Tme- seconds
Quack in time
What is the equation for potential difference
V= IR
Potential difference = Current x resistance
V= Colts
I- Amps
R- Ohmes
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What is the question for power- with PD
power = Charge x potential difference
P= VI
P- Watts
V- Volts
I - amps
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What is the equation for power including resistance
Power= current2 x resistance
P= I2R
Power- W
Current- amps
Resistance- Ohmes
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What is the equation for Energy including time
- Energy - power x time
E= Pt
Energy- J
Power- W
Time- seconds
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What is the equation for energy regarding charge
Energy = charge x potential difference
E=QV
E- J
Q- coulombs
V- volts
what is the equation for density
Density = mass//volume
P- M//v
P- kg.m3
M-KG
V- Kg3
What is the equation for energy regarding SLH
Energy = mass x S.L.H
E= mL
E- joules
M- kg
L- J/kg
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