The velocity v of a pulse traveling in a string varies directly as the square root of the tension T in the string. If the velocity of a pulse in a string is 450 ft/s when the tension is 20.0 lb, find the velocity when the tension is 30.0 lb.

A water wave travelling in a certain direction has a wavelength of 10.5 mm, a speed of 7.1 m/s and an amplitude of 5 mm. Calculate the frequency of the wave.

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A person stands at a point 380 m in front of the face of a sheer cliff. If the person shouts, how much time will elapse before an echo is heard? Assume the speed of sound is 344 m/s

There is a tube of length 1.0 m with one end closed. You clapped your hand at the mouth of the tube once. The echo of the clap came back after 6.0 milliseconds. What is the velocity of sound in the tube ? 330 m/s O 320 m/s 290 m/s O 170 m/s

A transverse sinusoidal wave travels to the right with a wave speed 8.96 m/s. The amplitude of the wave is 0.019 m and the wavelength is 1.73 m. What is the frequency of the oscillation in Hertz?

A water wave travelling in a certain direction has a wavelength of 8.5 mm, a speed of 8.2 m/s and an amplitude of 5 mm. Calculate the frequency of the wave.

One technique of estimating the length of a metal is by recording the time it takes for a pulse to travel from one end to the other.  The student finds that the time is 0.00349 s. The Young’s modulus of metal 127325340650 is N/m2; and its density is 9260 kg/m3. How long is the rod?

The next few questions challenge you to figure out the acceleration due to gravity ( g ) on various hypothetical alien planets. On Planet #1, you drop a stone from rest, 63.8 m above the ground, and the stone hits the ground 3.88 s later. What is the value of g on Planet #1?     16.44 m/s^2     32.89 m/s^2     8.48 m/s^2     4.24 m/s^2

A rope has a mass of 1 kg and a length of 15 m. It is fixed at both ends. If the frequency of the first harmonic on this rope is 0.68 Hz, what is the tension of this rope in N? Enter a number with one digit behind the decimal point.