What was the speed of the bullet at impact

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Q1. A 12.0 g bullet is fired horizontally into a 118g wooden block that is initially at rest on the frictionless horizontal surface and connected to a spring of constant 143N/m. The bullet becomes embedded in the block. If bullet-block system compresses the spring by the maximum of 74.0 cm, what was the speed of the bullet at impact with block?

Q2. A small spherical insulator of mass 8 x 10 kg and change +0.600 micro Coulomb is hung by a tin wire of negligible mass. A charge of -0.900 micro Coulomb is held 0.150 m away the sphere and straight to the right of it, so the wire makes the angle with vertical. Find out the angle and the tension of the wire.

Reference no: EM1311657

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