A geologist is camped 9,677 m (about 6 miles) from a volcano as it erupts. (a)...
A geologist is camped 9,677 m (about 6 miles) from a volcano as it erupts.
(a) How much time elapses before the geologist hears the sound
from the eruption? (Assume the air temperature is 20°C.)
(b) How much time does it take the seismic waves produced by the
eruption to reach the geologist's camp, assuming the waves travel
along the surface through granite as sound waves do? (Assume the
granite temperature is 20°C.)
Homework Answers
Given distance d = 9677 m
speed of sound in air is v = 344 m/s
a)
the time elapsed t = d / v
t = 9677 / 344
t = 28.13 s
b)
the speed of sound in granite is given by v = 4000 m/s
therefore t = d / v
t = 9677 / 4000
t = 2.42 s
Add Answer to:
A geologist is camped 9,677 m (about 6 miles) from a volcano as
it erupts.
(a)...
At 10:02 am local time on August 27, 1883, the Krakatoa volcano exploded. This volcanic eruption...
At 10:02 am local time on August 27, 1883, the Krakatoa volcano exploded. This volcanic eruption supposedly generated the loudest sound ever heard on Earth. Measurements at the time placed the peak sound level of 165 dB at a distance of 40 miles from the eruption! This large transient sound level will break your ear drums and corresponds to an increase in air pressure of 2.5 inches of mercury. (a) What is the intensity (I) of the eruption sound at...
At room temperature, sound travels at a speed of about 344 m/s in air. You see...
At room temperature, sound travels at a speed of about 344 m/s in air. You see a distant flash of lightning and hear the thunder arrive 7.8 seconds later. How many miles away was the lightning strike? (Assume the light takes essentially no time to reach you.)
2. (1) A pendulum clock makes use of the fact that the period of a pendulum is consistent and can...
2. (1) A pendulum clock makes use of the fact that the period of a pendulum is consistent and can be predicted relatively easy. What should the length of a pendulum be if the desired frequency of oscillation is. 3. (1) Near the shore, Tsunamis travel at a speed of 30 mph and the distance between crests is about 6.5 miles. What is the frequency of such a wave? Give your answer in units of Hz. When one crest hits...
1. The intensity of a particular earthquake wave is measured to be 1.60 x 106 W/m2...
1. The intensity of a particular earthquake wave is measured to be 1.60 x 106 W/m2 at a distance of 40.0 km from the source. What was the intensity when it passed a point only 1.00 km from the source? Assume that earthquake waves travel uniformly in all directions W/m2 2. The team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take 2.10 hours to reach earth. How distant (in meters) is...
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 20 m/s
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 20 m/s. The vehicle then slows at a constant rate of 1 m/s2 until it stops. (a) How much time elapses from start to stop? (b) How far does the vehicle travel from start to stop?
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s....
1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s. The density of the alcohol at that temperature is 650 kg/m^3. At a temperature of 20°C, find the bulk modulus of the alcohol. 1030 MPa 1080 MPa 1140 MPa 1190 MPa 1240 MPa 2. During a thunderstorm, you hear the sound 4 s after you see the lightning flash. How far did it fall? Assume the temperature outside is approximately 20 1.324 km 1.372...
Cheetahs can accelerate to a speed of 19.8 m/s in 2.65 s and can continue to...
Cheetahs can accelerate to a speed of 19.8 m/s in 2.65 s and can continue to accelerate to reach a top speed of 28.8 m/s. Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +x direction point in the direction the cheetah runs. Express the cheetah's top speed Vop in miles per hour (mi/h) mi/h Starting from a crouched position, how much time tae does it take a cheetah to reach its...
Question 9 of 22> Attempt 1 Cheetahs can accelerate to a speed of 21.6 m/s in...
Question 9 of 22> Attempt 1 Cheetahs can accelerate to a speed of 21.6 m/s in 2.45 s and can continue to accelerate to reach a top speed of 27.3 m/s. Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +x direction point in the direction the cheetah runs. Express the cheetah's top speed uop in miles per hour (mi/h). hop61.08 mi/h Starting from a crouched position, how much time faccel does...
Cheetahs can accelerate to a speed of 21.3 m/s in 2.70 s and can continue to...
Cheetahs can accelerate to a speed of 21.3 m/s in 2.70 s and can continue to accelerate to reach a top speed of 29.9 m/s. Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +? direction point in the direction the cheetah runs. Express the cheetah's top speed ?topvtop in miles per hour (mi/h). Starting from a crouched position, how much time ?acceltaccel does it take a cheetah to reach its top...
Cheetahs can accelerate to a speed of 20.4 m/s in 2.50 s and can continue to...
Cheetahs can accelerate to a speed of 20.4 m/s in 2.50 s and can continue to accelerate to reach a top speed of 29.0 m/s. direction the cheetah runs. Express the cheetah's top speed brop in miles per hour (mi/h). Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +x direction point in tho mi/h Starting from a crouched position, how much time facci does it take a cheetah to reach its...
2. (1) A pendulum clock makes use of the fact that the period of a pendulum is consistent and can be predicted relatively easy. What should the length of a pendulum be if the desired frequency of oscillation is. 3. (1) Near the shore, Tsunamis travel at a speed of 30 mph and the distance between crests is about 6.5 miles. What is the frequency of such a wave? Give your answer in units of Hz. When one crest hits...
1. The intensity of a particular earthquake wave is measured to be 1.60 x 106 W/m2 at a distance of 40.0 km from the source. What was the intensity when it passed a point only 1.00 km from the source? Assume that earthquake waves travel uniformly in all directions W/m2 2. The team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take 2.10 hours to reach earth. How distant (in meters) is...
Cheetahs can accelerate to a speed of 19.8 m/s in 2.65 s and can continue to accelerate to reach a top speed of 28.8 m/s. Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +x direction point in the direction the cheetah runs. Express the cheetah's top speed Vop in miles per hour (mi/h) mi/h Starting from a crouched position, how much time tae does it take a cheetah to reach its...
Question 9 of 22> Attempt 1 Cheetahs can accelerate to a speed of 21.6 m/s in 2.45 s and can continue to accelerate to reach a top speed of 27.3 m/s. Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +x direction point in the direction the cheetah runs. Express the cheetah's top speed uop in miles per hour (mi/h). hop61.08 mi/h Starting from a crouched position, how much time faccel does...
Cheetahs can accelerate to a speed of 20.4 m/s in 2.50 s and can continue to accelerate to reach a top speed of 29.0 m/s. direction the cheetah runs. Express the cheetah's top speed brop in miles per hour (mi/h). Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +x direction point in tho mi/h Starting from a crouched position, how much time facci does it take a cheetah to reach its...
Most questions answered within 3 hours.
-
Calculate the pH of each of the following solutions.
0.50 M HBr
3.1×10−4 M KOH
4.2×10−5...
asked 17 minutes ago -
For the year ended December 31, Depot Max’s cost of merchandise
sold was $85,600. Inventory at the...
asked 17 minutes ago -
Week 10 - Professional Memo Assignment
Professional Memo Assignment
Your mission for this week, should you...
asked 21 minutes ago -
Write a Python program that stores the data for each
player on the team, and it...
asked 31 minutes ago -
In
the last 3 months, mike never knows when he is going to get his
allowance...
asked 56 minutes ago -
Is Ca(OH)2 a Bronsted base, Lewis base, or both? Why?
asked 46 minutes ago -
1A- Why don’t voters complain about U.S. tariffs on imported
sugar?
Because sugar is only a...
asked 54 minutes ago -
Cash Payback Period
Primera Banco is evaluating two capital investment proposals for
a drive-up ATM kiosk,...
asked 53 minutes ago -
Create a button in Swift (Xcode) that will create a charge,
create a charge using Stripe's...
asked 53 minutes ago -
The reaction rate of CO and NO2 in the reaction
CO(g) + NO2(g) → CO2(g) +...
asked 54 minutes ago -
Imagine that a chemist puts 6.40 mol each of
C3H8 and O2 in a 1.00-L container...
asked 1 hour ago -
How much money should be invested today in order to have $8340
at the end of...
asked 1 hour ago