Question

In: Math

1) You drop a pebble into a well. 10 seconds later, you hear the sound of...

1) You drop a pebble into a well. 10 seconds later, you hear the sound of the pebble hitting the water. How deep is the well? For what part of the 10 seconds was the pebble falling? How long did it take the sound to travel back up the well? What assumptions did you make in solving the problem?

2) Suppose another well is just the depth at which the time it takes your pebble to hit the water is the same as the time it takes the sound of hitting the water to return to the top. How deep is the well?

3) Suppose another well is just the depth at which the time it takes your pebble to hit bottom is 15 times greater than the time it takes the sound of it hitting return to the top? How deep is the well?

I need a differential equations approach to the problem please.

Solutions

Expert Solution

Will appreciate feedback.


Related Solutions

First you see the lightning, which stops, and a few seconds later you hear the sound...
First you see the lightning, which stops, and a few seconds later you hear the sound of thunder. This illustrates A. Overshadowing B. Trace conditioning C. Delayed conditioning D. Blocking
A stone is dropped into a well. The splash is heard 2.2 seconds later. What is...
A stone is dropped into a well. The splash is heard 2.2 seconds later. What is the depth of the well to the nearest tenth of a meter?
You are riding your bicycle directly away from a stationary source of sound and hear a...
You are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 0.7% lower than the emitted frequency. The speed of sound is 346 m/s. What is your speed?
I understand you want to hear my story; well I’m not much for talking, but I...
I understand you want to hear my story; well I’m not much for talking, but I can give you the highlights. There’s a lot that’s happened over my 80 years. From the top. My name is Sherman Yoder, but I answer to “Red.” No one around here even remembers my real name. I was born in this house in the downstairs bedroom. Mom had already delivered six kids and there was no way I was waiting for Dad to finish...
(1) (A)You approach a stationary sound source with a speed such that the frequency of sound...
(1) (A)You approach a stationary sound source with a speed such that the frequency of sound you hear is 17% greater than the actual frequency. With what speed are you approaching the sound source? Use the speed of sound in air as 343 m/s. (B)Two trains approach each other on separate but adjacent tracks. Train 1 is traveling at a speed of 31.9 m/s and train 2 at a speed of 27.6 m/s. If the engineer of train 1 sounds...
1. When you throw a pebble straight up with initial speed V, it reaches a maximum...
1. When you throw a pebble straight up with initial speed V, it reaches a maximum height H with no air resistance. At what speed should you throw it up vertically so it will go twice as high? a. Insufficient information b. 18 V c. V sqrt(2) d. 4 V e. 8 V 2. A 60.0-kg man stands at one end of a 20.0-kg uniform 10.0-m long board. How far from the man is the center of mass (or center...
Red Yoder: Script for Introductory Monologue I understand you want to hear my story; well I’m...
Red Yoder: Script for Introductory Monologue I understand you want to hear my story; well I’m not much for talking, but I can give you the highlights. There’s a lot that’s happened over my 80 years. From the top. My name is Sherman Yoder, but I answer to “Red.” No one around here even remembers my real name. I was born in this house in the downstairs bedroom. Mom had already delivered six kids and there was no way I...
Red Yoder Introductory Monologue Script I understand you want to hear my story; well I’m not...
Red Yoder Introductory Monologue Script I understand you want to hear my story; well I’m not much for talking, but I can give you the highlights. There’s a lot that’s happened over my 80 years. From the top. My name is Sherman Yoder, but I answer to “Red.” No one around here even remembers my real name. I was born in this house in the downstairs bedroom. Mom had already delivered six kids and there was no way I was...
You buy a 11.15%, 17-year bond selling to yield 10%. 4 years later, you sell the...
You buy a 11.15%, 17-year bond selling to yield 10%. 4 years later, you sell the bond when it is yielding 12.5%. Calculate your percentage return on this trade
Question: A robot is given 1 random instruction every second for 10 seconds. Each instruction will...
Question: A robot is given 1 random instruction every second for 10 seconds. Each instruction will be either a command to move 1 inch to the left, or 1 inch to the right. The likelihoods of the instruction being a command to move to the left and right are 'p' and '1-p', respectively. Find: a) What is the expectation of the robot's final position with respect to its starting position. b) What is the variance we might expect for observations...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT