physics

A spelunker drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.50s after the stone is dropped. How deep is the hole?

how can i use the speed of sound to solve this problem?Please give me some hints!
Thanks a lot!

  1. 👍 0
  2. 👎 0
  3. 👁 557
asked by ajo
  1. The time required to hear the impact is the sum of the time for the stone to fall and the time for the sound wave to reach the top of the hole.

    If the hole depth is X,

    1.50 seconds = sqrt (2X/g) + X/v

    where v is the speed of sound and g is the acceleration of gravity.

    Solve for X

    1. 👍 0
    2. 👎 0
    posted by drwls
  2. 10.6m

    1. 👍 0
    2. 👎 0
    posted by Max
  3. On a spacecraft, two engines are turned on for 732 s at a moment when the velocity of the craft has x and y components of velocity v0x = 4865 m/s and v0y = 5435 m/s. While the engines are firing, the craft undergoes a displacement that has components of x = 4.12 106 m and y = 7.44 106 m. Find the x and y components of the craft's acceleration.
    ax = m/s2
    ay = m/s2

    1. 👍 0
    2. 👎 0
    posted by Jacob

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 3.24 s after the stone is dropped. How deep is the hole?

    asked by shaknocka on February 7, 2011
  2. physics

    A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 3.87 s after the stone is dropped. How deep is the hole?

    asked by alicia on July 2, 2011
  3. Physics(Please help)

    1) A cave explorer drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.33 s after the stone is dropped. How deep is the hole? I did 343 / 1.33. Is

    asked by Hannah on May 26, 2012
  4. physics

    A spelunker drops a stone from rest into a hole. The speed of sound is 343m/s in air, and the sound of the stone striking the bottom is heard 1.46s after the stone is dropped. How deep is the hole? What is it in meters

    asked by jean on October 23, 2008
  5. Physics(Please respond)

    1) A cave explorer drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.33 s after the stone is dropped. How deep is the hole? I did 343 / 1.33. Is

    asked by Hannah on May 27, 2012
  1. Physics

    Carol drops a stone into a mineshaft 122.5m deep. Calculate the time from when she hears it hit the bottom of the shaft. Assume the speed of sound in the air 343 m/s.

    asked by Alex on July 8, 2013
  2. physics

    A boy drops a 0.10 kg stone down a 150 m well and listens for the echo. The air temperature is 20°C. How long after the stone is dropped will the boy hear the echo? The speed of sound through air at 20°C is v = 343 m/s.

    asked by Pat on May 21, 2012
  3. physics

    1)As a sound source moves away from a stationary observer, the number of waves will. decrease 2)How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than when the car is stationary? The speed

    asked by Jon on April 6, 2008
  4. science

    a man drops a stone in a well and hears the sound of the stone hitting the water after 4 sec calculate the depth of the well ( assuming the speed of sound in the well is 364 m\s )

    asked by meera on September 29, 2011
  5. physics

    1)As a sound source moves away from a stationary observer, the number of waves will. decrease 2)How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than when the car is stationary? The speed

    asked by Jon on April 6, 2008

More Similar Questions