Q1 a skater holds her arms outstretched as she spins at 180

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Reference no: EM13354539

Q1. A skater holds her arms outstretched as she spins at 180 rpm. What is the speed of her hands if they are 150 cm apart?

Q2. Consider a horizontal square plate capacitor of area 1.8 x 1.8 m^2, capacitance in vacuum 2.5 μF, that contains the dielectric material with dielectric constant K=5. The dielectric slides frictionless and is attached via a massless string and a massless pulley to a block of mass 3 kg. The block pulls the dielectric from the capacitor as it falls. Calculate the speed of block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across capacitor after the dielectric is removed is measured to be 200 V.

Reference no: EM13354539

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