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Q1. Two long, straight parallel wires 10.6 cm apart carry currents of equal magnitude I.

The parallel wires repel each other with a force per unit length of 2 nN/m.

The permeability of free space is 4 × 10-7 T • m/A. Find I. reply in units of mA.

Q2. Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 27.7 cm) 22.4 cm away from an object. Discover the image distance.

Answer in units of cm

Q3. A 4.70 kg mass causes a vertical spring to stretch 0.850 meters. The spring is after that stretch and extra 0.270 meters and release (as a stopwatch starts) causing the spring and mass to oscillate.

What is the greatest velocity of this mass? Using the equations

T=1/f and Vmax=2πA/T

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Category:- Physics
Reference No.:- M9720503

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