all Useful equations

• What is the specific heat capacity equation?


  Energy= mass x specific heat capacity x change in temperature
• Equation that links change in velocity time taken and acceleration


  Acceleration=change in velocity /time taken

  Change In velocity= acceleration /time taken

  Time taken= changes in velocity / acceleration
• Mass / volume=


  density equation
• Equation linking charge, current and time

  charge = current x time
• What are the equations for acceleration (u=initial velocity) (v=final velocit) (s=displacment) (a=acceleration)


  1)(final velocity-inital velocity)÷time

  2)final velocity²-initial velocity²=2as

  3)(2 x distance)/ time²
• An Indy 500 race car's velocity increases from 4 m/s to 36 m/s over a 4.0 s time interval. What is its acceleration?


  To find the acceleration, you use the equation:

  Change in velocity/time interval

  32/4=8m/s² or 8m/s/s
• equation for efficiency


  Efficiency = useful power out ÷ total power 
• specific heat equation

  
• current, resistance equation

  Potential difference = current x resistance (Or V=IxR)
• magnification equation=

  
• Efficiency = useful power out ÷ total power in.
• work done equation


  work done= mass x gravitational feild strength x height