hw4 - 2.011 HW # 4 Due Tuesday March 21, 2006 In class...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2.011 HW # 4 Due Tuesday March 21, 2006 In class Problem 1: Review of dB and logarithms: a) Explain in words what a decibel is a measure of. b) Look up (Google, etc.) the relative Source Levels (in dB) for four (4) of the following sounds (cite your source) i. Jet Engine ii. Car iii. Whale (specify type of whale) iv. Underwater seismic activity v. A rock concert at the Fleet center or similar arena vi. A ships propeller (can be any ship, just specify) vii. A dolphin viii. Some other sound c) Expand the following expressions: i. 10 log 10 ( A / B ) = ii. 10 log 10 ( A + B ) = iii. 10 log 10 ( A B ) = d) Given your math in part e and your understanding of the definition for a decibel, calculate the following quantities: i. 10 log 10 (1) dB = ii. 10 log 10 (10) dB = iii. 10 log 10 (0.5) dB = iv. 10 log 10 (4) dB = v. 10 log 10 (16) dB = Problem 2: Sound Wave properties a) A sound wave is really a pressure wave traveling at the speed of _____(?)____....
View Full Document

This note was uploaded on 02/24/2012 for the course MECHANICAL 2.011 taught by Professor Alexandratechet during the Spring '06 term at MIT.

Page1 / 3

hw4 - 2.011 HW # 4 Due Tuesday March 21, 2006 In class...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online