Register to reply

Speed of Sound and Mac

by Idioticsmartie
Tags: sound, speed
Share this thread:
Idioticsmartie
#1
Oct28-07, 04:08 PM
P: 18
1. The problem statement, all variables and given/known data
You are hired as the physics consultant for a large movie studio. The producer is way over budget and wants to perform some special effects that will save him money. He decides to shoot the dramatic action boat chase scene with the boats going at 1/4 the speed of what will be seen on film. He quadruples the speed of playback. Explain why or why not this will work.


2. Relevant equations

Mach # = velocity of boat/ speed of sound
Speed of sound = 331 + 0.60*T
T = temperature


3. The attempt at a solution

I don't even know where to begin. I don't think it will work, but maybe if someone could point me in the right direction?
Phys.Org News Partner Science news on Phys.org
Wearable 4MM jetpack tested on speed, agility for runners (w/ Video)
How did evolution optimize circadian clocks?
Corn spots: Study finds important genes in defense response
learningphysics
#2
Oct28-07, 09:09 PM
HW Helper
P: 4,124
I think the idea is that the sound won't be right. What happens to the frequency of the sounds heard when playback is quadrupled?


Register to reply

Related Discussions
Speed of sound in air Introductory Physics Homework 10
Speed of sound and sound detection lag between ears Introductory Physics Homework 5
Speed of sound General Physics 1
Speed of sound in gas Introductory Physics Homework 2
The speed of sound and The speed of Light General Physics 4