Equations for P1 &P2 0.0 / 5 ? PhysicsMatter and ForcesGCSEOCR Created by: JH12Created on: 13-09-17 22:06 Density density (kg/m3)=mass (kg)/ volume (m3) 1 of 23 Thermal Energy for a Change in State thermal energy for a change in state (J)= mass (kg) *specific latent heat (J/kg) 2 of 23 Change in Thermal Energy change in thermal energy (J) =mass (kg) *change in temperture (oC) 3 of 23 Pressure pressure (Pa) =force (N) /area (m2) 4 of 23 Pressure due to a Column of Liquid pressure due to acolumn of liquid (Pa) =height of column (m) * density of liquid (kg/m3) * g (N/kg) 5 of 23 Pressure Difference at two Points in a Liquid pressure difference at two points in a liquid (Pa) =depth difference of the two points (m) * density of liquid (kg/m3) * g (N/kg) 6 of 23 Kinetic Energy kinetic enrgy (J) =0.5 *mass (kg) * (speed (m/s) )2 7 of 23 Distance distance travelled (m) =speed (m/s) * time (s) 8 of 23 Velocity velocity =displacement / time 9 of 23 Acceleration acceleration (m/s2) =change in veelocity (m/s) / time (s) 10 of 23 Force force (N) =mass (kg) * acceleration (m/s2) 11 of 23 Momentum momentum (kgm/s) =mass (kg) * velocity (m/s) 12 of 23 Conservation of Momentum total momentum before = total momentum after 13 of 23 Work Done work done (J) =energy supplied =force (N) * distance (m) 14 of 23 Potential Energy (in a gravity field) potential energy (J) =mass (kg) * gravitational field strength, g (N/kg) 15 of 23 Energy Transferred energy transferred (J) =charge (C) * potential difference (v) 16 of 23 Power power (W) =rate of transfer of energy (J/s) =energy (J) / time (s) 17 of 23 Power power (W) =word done (J) / time (s) 18 of 23 Force Exerted on a Spring force exerted on a spring (N) =extention (m) * spring constant (N/m) 19 of 23 Work Done work done = average force * distance =[final force / 2] * distance 20 of 23 Work Done work done =energy transferred in streching (J) =0.5 * spring constant (N/m) * (extention (m) )2 21 of 23 Weight weight =gravity force (N) =mass (kg) * g (N/kg) 22 of 23 Moment of a Force moment of a force (Nm0 =force (N) * distance (m) 23 of 23
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