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Physicshelpline

. January 2018

Electromagnetic Induction

Q- A solenoid has length L = 30 cm, radius 6 cm, and N1 = 5500 turns; its axis coincides with the z-axis. A circular conducting loop containing N2 = 15 turns of radius a = 3 cm is centered inside the solenoid; the plane of the loop makes a 30° angle with respect to the z-axis. The loop has a net res…

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Rotational Motion

Q- Two blocks of mass m1 = 4 kg and m2 = 3 kg are attached to the ends of a string that passes over a pulley of mass M = 2 kg and radius 20 cm. Find angular acceleration of the pulley considering it as a uniform disk.

Solution:

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Charged Particle Moving in a Magnetic Field.

Q- A proton (mass= 1.67×10-27 kg, charge= 1.6×10-19 C) travelling with speed 1×106 m/s enters a region of space containing a uniform magnetic field of 1.2 T, perpendicular to it. What is the time t required for the proton to re-emerge into the field-free region? 

Solution:

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Fluid: Non-viscous flow

Q- For non-viscose fluid, find the power required to actuate the piston to get 2750 psi with an 8.5 second stroke at 6.5 gal/minute at outlet. 

Solution:

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Waves

Q- Figure shows snapshot graph at t = 0 of two waves approaching each other at 1 m/s. Draw six snapshots graphs showing the string at 1 s intervals from t = 1 s to t = 6 s.

Solution:

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