1. Josh and Pete are resting on top of the water near the end of the pool when Josh creates a surface wave. The wave travels the length of the pool and back in 25 seconds. The pool is 25 meters long. Determine the speed of the wave.

2. While hiking through a canyon, Jack lets out a scream. An echo (reflection of the scream off a nearby canyon wall) is heard 1.3 seconds after the scream. The speed of the sound wave in air is 345 m/s. Calculate the distance from Noah to the nearby canyon wall.

3. An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The camera sends out sound waves which reflect off distant objects and return to the camera. A sensor detects the time it takes for the waves to return and then determines the distance an object is from the camera. If a sound wave (speed = 340 m/s) returns to the camera 0.150 seconds after leaving the camera, how far away is the object?

Solution Preview

1. GIVEN: d (1-way) =25 m, t (2-way)=25 s

Find v

If the pool is 25 meters long, then the back-and-forth distance is 50 meters. The wave covers this distance in 25 seconds. ...

Solution Summary

Determining the speed of a wave or the distance a wave has traveled.

... (2). (c) Determine the length L that gives a period of T = 3.1 s. ... The oscillation of pendulum, inertia, amplitudes and wave speed are determined. ...

... A) Determine the length ... Assume the speed of sound in air is 343 m/s ... top of a tower produces a sound whose power level is measured to be 68 dB at a distance 50 m ...

... (The speed of sound is 343 m/s.) If it takes the sound 4.00s to reach the plane, determine a) The altitude of the plane, and The distance the sound wave...

... 6 H and a variable-capacitance C. Determine the value ... Frequency only b. Wavelength only c. Their speeds in a ... and wavelength e. Frequency and their speed in a ...

... The lowest frequency that produces interference is determined. ...Speed of sound in air at 20OC = 343 m/s. ... undergone by the wave on travelling a distance of 1.708 ...

... 2a : the speed, and therefore the frequency, are determined by the ...Determine the speed of sound in an aluminum rod. ... The speed of sound is 343 m/s. How far does ...

... Hint: You will have to determine the two torques on the ... Then, centre of mass is determined as follows ... m2 Problem 1. An object is thrown at initial speed vo = 30 ...

...Determine the voltage across resistor R2 immediately after and long ... by q2a2 dE = ,where c is the speed of light ... a distance 1/k and calculate this distance for a ...

... In the second experiment, I determined the power output of our ... Where Vs is the speed of sound in air at ... time tuning fork it self has moved a certain distance. ...