Q1. A mass of 1.61 kg stretches a vertical spring 0.323 m. If the spring is stretched an additional 0.132 m and released, how long does it take to reach the (new) equilibrium position again?
Q2. Two 2.0cm x 2.0cm plates that form a parallel-plate capacitor are charged to (+/-) 0.708 nC.what are the electric field strength inside and the potential difference across the capacitor if the spacing between plates.
Q3. Two identical piano wires have a fundamental frequency of 485Hz when kept under the same tension. What fractional increase in the tension of one wire will lead to occurrence of 4 beats/s when both wires oscillate simultaneously?