physics

A hammer taps on the end of a 4.02 m long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 5.79 ms. What is the speed of sound in this metal?(the speed of sound in air is 343 m/s)

  1. 👍 0
  2. 👎 0
  3. 👁 90
  1. They travel the same distance.

    vsair*timeinair=vsmetal*timeinmetal

    but time in air=time in metal+5.79s

    solve for vsmetal.

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A hammer taps on the end of a 8.13m long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are

    asked by rory on November 21, 2012
  2. Physics

    A hammer taps on the end of a 4.20 m long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses

    asked by Gavin on November 22, 2010
  3. physics

    A hammer taps on the end of a 3.32 m long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses

    asked by Anonymous on November 21, 2008
  4. AP CALC

    A temperature of a 10m long metal bar is 15C at one end and 30C on the other end. Assuming that the temperature increases linearly from the cooler end to the hotter end, what is the average temperature of the bar? Also, explain

    asked by jessica on February 15, 2011
  5. AP Calculus AB

    the temperature of a 10m long metal bar is 15 degrees celcius at one end and 30 degrees celcius on the other end. Assuming that the temperature increases linearly from the cooler end to the hotter end, what is the average

    asked by Destinyyy on February 13, 2011
  6. PHYSICS

    Two parallel METAL rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 118.0 Ω. The lower end of the rods are held in an ELECTRICALLY INSULATING block. They

    asked by Khuan on November 29, 2014
  7. Physics

    A bar of aluminum (bar A) is in thermal contact with a bar of iron (bar B) of the same length and area. One end of the compound bar is maintained at Th = 75.5°C while the opposite end is at 30.0°C. Find the temperature at the

    asked by Chelsea on November 27, 2010
  8. physics

    A compound metal bar has 4 kg of copper making up the first third of the bar, while the remainder is made of 12 kg of lead. The bar is 3 meters in length. In addition, a mass of 2 kg is hung 1m from the left end of the bar, and a

    asked by tyger2020 on December 5, 2018
  9. physics

    A .5 m long, 3 cm diameter metal bar has a Young’s Modulus of 7.0x1010 N/m2. If a 50,000 N force is applied to the end of the bar, by how much will it compress?

    asked by Kate on July 5, 2011
  10. Calculus

    I do not understand what this question is asking and how to get the result for it: "Suppose we have a metal bar of length L0 metres at temperature T0 in degrees Celsius.When the bar is heated or cooled, the length of the bar

    asked by Anonymous on September 16, 2014

More Similar Questions