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1.05 practical: investigate the motion of everyday objects such as a toy car or tennis ball 1.22 practical investigate how extension varies with applied force for helical springs, metal wires… 2.09 describe how current varies with voltage in wires, resistors, metal filament lamps and diodes,…2.23 practical: investigate how insulating materials can be charged by friction 3.03 know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave3.05 know and use the relationship between the speed, frequency and wavelength of a wave: v = f × λ