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  1. An a.c. supply gives 30 volt r.m.s which passes through a 10Ω resistance.
  2. An engine is moving towards a wall with a velocity 50 ms⁻¹ emits a note of 1.2 kHz.
  3. The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
  4. The alternating current in a circuit is given by I=50 sin314t. The peak value
  5. In a uniform circular motion, work done in one complete rotation is