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 Physics Formulae
  Units of Measurement
 

 

Acceleration:   

 It is defined as the rate of change of velocity.

  acceleration

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 Acceleration due to gravity: 

  acceleration due to gravity

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 Angular Displacement: 

   angular displacement

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 Angular momentum or moment of momentum L: 

   angular momentum

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 Angular velocity: 

   angular velocity   

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 Coefficient of Friction: 

   coefficient of friction

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 Coefficient of Thermal conductivity k0: 

    coefficient of thermal conductivity

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 Coefficient of viscosity: (η) 

   coefficient of viscosity

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 Force:  

   Force =mass ´ acceleration = m ´ a

      F = (M) ´(LT-2) = (MLT-2)

      So, dimension of mass is 1 and that of length is +1and that of time is –2 in force.

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 Gravitational constant:  

  According to Newton universal law of gravitation.

 gravitational constant

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 Heat: 

   Heat is a form of energy.  

   Q = [ML2T-2]

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 Impulse:  

   impulse

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 Kinetic Energy (K.E.): 

kinetic energy

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 Latent Heat:  

    Heat absorbed per unit mass during changed of state.

   latent heat

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 Momentum: 

momentum

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 Moment of a force of torque of moment of a couple: 

 moment of a force of torque

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 Moment of Inertia:  

   Moment of inertia = mass × (length)2 = [ML2]

    I = [ML2]

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 Planck’s constant: 

     planck's constant

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 Power:  

power       

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 Potential Energy (P.E.):  

   potential energy

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 Pressure: 

      pressure   

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 Specific Heat:  

    Thermal capacity for unit mass of the body.

    specific heat

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 Speed 

 speed

      

 So, dimension of length is +1 and of time is –1 in velocity and speed.

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 Stress : = 

   stress

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 Surface Tension: 

    surface tension

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Thermal Capacity: 

   The amount of heat energy required by a body for unit rise of temperature.

    thermal capacity

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 Velocity:   

     velocity

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 Work of energy: 

 Work = force × displacement = F × s

     W =(MLT-2) × (L) = (ML2T-2)

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 Young modulus (Y):  

           young modulus     

 

 

 

   
 
 
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