assignment3

# assignment3 - PHYS122 2010W Assignment 3 Due: 17:00...

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PHYS122 2010W Assignment 3 Due: 17:00 Thursday 2010-01-28

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PHYS122 Assignment 3 Tutorial: Student ID: - Surname: Given Name: 1. (a) (3) A boy with a stopwatch drops a stone in a well. If he hears the splash a time t after dropping the stone how deep, d , is the well? d = (b) (3) Consider the v w ± gt limit of your solution for part (a) for both possible sign choices in front of the square root. What sign choice gives a reasonable answer and what is that answer? (Hint: Use the binomial expansion for the square root up to the second order term.) ² = (c) (2) What is the g → ∞ limit of your answer to part (a)? (d) (2) If the boy assumed that sound travelled instantaneously what would he calculate the depth of the well to be? lim g →∞ d = d fast sound = Page 1 of 3
PHYS122 Assignment 3 Tutorial: Student ID: - Surname: Given Name: 2. A plane travelling horizontally passes overhead at a height h at t = 0 . At time t = t 1 a sonic boom is heard.

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## This note was uploaded on 11/14/2010 for the course PHYS PHYS122 taught by Professor O'donovan during the Winter '10 term at Waterloo.

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assignment3 - PHYS122 2010W Assignment 3 Due: 17:00...

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