Physics End Of Year Exam Formulas

formulas for 3eme exam in physics

• Created by: Alex Hine
• Created on: 26-05-10 19:05

Physics End Of Year Exam Formulas 1

• Chapter 1
• 1L=1dm cube
• Density=mass/volume
• 1kg=10N
• Hooke's Law
• F is the stretching force
• e is the extension
• K is the force constant
• F= K x e
• Moments And Forces
• (moment of a force)Nm=(force)N x (perpendicular distance of the line of action of the force from the fulcrom)m
• LAW OF MOMENTS: clockwise moment=anti-clockwise moment
• Velocity Ratio (VR)= distance moved by effort/ distance moved by load
• Pressure
• The unit of Pressure is Pa
• Pressure(Pa)= Force(N) or Weight(N)/Area
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Physics End Of Year Exam 2

• Energy
• Work(J)=Force x Distance moved
• Power(W)= Work/Time taken
• Kinetic Energy or KE(J)= 0.5 x Mass x Volume squared
• Gravitational Potential Energy(J)= Mass x Gravity(N/kg) x change in height(m)
• Elastic Energy(J)= Average Force x Distance x Gravity On Earth
• Temperature
• Absolute Zero= Coldest Possible Temperature= -273 degrees C or 0 K in kelvin scale
• Expansion= Linear Expansivity x Original Length x Temperature Rise
• Specific Heat Capacity(J/kg x degree C)= Heat Required To Produce 1 degree C Rise In 1kg
• Heat Received Or Given Out= Mass x Temperature= m(kg) x T(degree C) x c(Specific Heat Capacity)
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