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Assuming the sound source emits sound waves with a power output of 80 W. (i) Find the intensity at 4 m away from the sou
Posted: Thu Jul 14, 2022 2:40 pm
by answerhappygod
- Assuming The Sound Source Emits Sound Waves With A Power Output Of 80 W I Find The Intensity At 4 M Away From The Sou 1 (21.77 KiB) Viewed 31 times
Assuming the sound source emits sound waves with a power output of 80 W. (i) Find the intensity at 4 m away from the source and (ii) find the distance at which the sound power level is 40 dB. (10 marks) 6) A screw jack is used to lift a mass of 500 kg. The screw has a thread with a pitch of 8 mm. An effort of 55 N has to be applied tangentially at a radius of 290 mm to lift the load. Calculate the velocity ratio, the mechanical advantage and the efficiency of the screw jack. (10 marks)