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Question1

Imagine you are on a planet similar to Earth where an acceleration of gravity is approximately 10 m/s2.

The pulley is massless and frictionless. A massless inextensible string is attached to masses. The objects are initially held at rest. If a third object with a mass of 18 kg is hung on one of the 36 kg objects and the objects are released, the magnitude of the acceleration a of the 18 kg object is most nearly.

Question2

At a particular instant of time, a light beam travelling in the positive direction has an electric field given by E= (6.22N/C) x + (2.87N/C)y.The magnetic field in the beam has a magnitude of at the same time. Note down B in terms of unit vectors.

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