matrixxavier

1. A wire of mass per unit length 5.0gm-1 is stretched between 2 points 30cm apart.

The tension in the wire is 70N.

Calculate the frequency of the sound emitted by the wire when it oscillates in the fundamental mode.

2. A body is taken to depth of 32km below the surface of the earth.

Calculate the percentage decrease in the weight of the body at this depth

(The radius of the earth is 6400km)