A 20 kg child is on a swing that hangs from 2.2-m-long chains. Part A What is her maximum speed if she swings out to a 49° angle? Express your answer to two significant figures and include the ...
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Two 4.8 cm diameter metal disks are separated by a 0.19 mm thick piece of paper. (Dielectric constant for paper is called kpaper=3.7, its dielectric strength is 16×106 V/m .) a) What is the capacitance? b)What is the maximum potential difference between ...
A 0.50-mm-wide slit is illuminated by light of wavelength 500 nm. What is the width of the central maximum on a screen 2.0 m behind the slit? Please answer in mm.