2. The ratio of the centripedal acceleration to the gravitational acceleration of a person standing on the earth surface around equator is about: (A) 0.003% (B) 0.03% (C) 0.3% (D) 3% (E) 30%

10. In an oscillating series RLC circuit with R = 50 Ω, L = 20 mH and C = 2.0 μF, the maximum charge is stored on the capacitor at t = 0. Find the time required for the charge on the capacitor falling to 37% of its initial value. (A) 1. × 10⁻⁴ s (B) 2. × 10⁻⁴ s (C) 4. × 10⁻⁴ s (D) 6. × 10⁻⁴ s (E) 8. × 10⁻⁴ s