Erstellt von Michael Priest
vor mehr als 9 Jahre
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Define: scalar and vector quantities
Give an example of a scalar and a vector quantity
Define: displacement
Define: speed
Define: velocity
Define: acceleration
Define: equilibrium
Define: moment
Define: principle of moments
Define: couple
Define: centre of mass
Define: centre of gravity
What does the gradient of a displacement-time graph represent?
What does the gradient of a velocity-time graph represent?
What does the area under a velocity-time graph represent?
Why can horizontal motion and vertical motion be treated independently?
State Newton's 1st law
State Newton's 2nd Law
State Newton's 3rd Law
Describe one situation where Newton's 1st law applies
Describe how the forces acting on a falling object change as it falls
What is meant by conservation of energy?
Define: density
Define: tensile stress
Define: tensile strain
State Hooke's Law
What is meant by 'elastic limit'?
Define: Young Modulus
What does the area under a stress vs. strain graph represent?
What does the area under a force vs. extension graph represent?
What does the gradient of a stress vs. strain graph represent?
Which equation starts the derivation for the energy stored in a stretched material?
Define: Breaking Stress
Define: progressive wave
Define: stationary wave
Define: Transverse wave
Define: Longitudinal wave
What is the phase difference between particles one wavelength apart on a progressive wave?
What is the phase difference between particles half a wavelength apart on a stationary wave?
What is the phase difference between particles half a wavelength apart on a progressive wave?
What property of light waves does polarisation demonstrate?
If light refracts towards the normal what does this mean for the refractive indices of two materials?
If light refracts away from the normal what does this mean for the refractive indices of two materials?
State Snell's Law of Refraction