Good Practice Physics Examples

HONORS PHYSICS CH. 14 WAVE PRACTICE PROBLEMS 1. The period of a wave is 0. 0300 seconds. It travels at a velocity of 10. 0 m/s. Determine the frequence and the wavelength. 2. A wave having a wavelength of 4. 0 meters and an amplitude of 2. 5 meters travels a outstrip of 24 meters in 8. 0 seconds. Determine the frequency and the period of the wave. 3. While hiking through a canyon, Noah reflexion lets out a scream. An echo (reflection of the scream off a close canyon wall) is heard 0. 82 seconds after the scream.The speed of the sound wave in air is 342 m/s. Calculate the distance from Noah to the nearby canyon wall. 4. Mac and Tosh are resting on top of the water near the end of the pocket billiards when Mac creates a surface wave. The wave travels the length of the pond and back in 25 seconds. The pool is 25 meters long. Determine the speed of the wave. 5. An automatic focus camera is able to focus on objects by use of an ultrasonic sound wave. The camera sends out sound waves that reflect off distant objects and withdraw 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. The camera lens then focuses at that distance. Now thats a smart camera In a subsequent life, you might have to be a camera so try this problem for practice If a sound wave (speed = 340 m/s) returns to the camera 0. 150 seconds after leaving the camera, then how far away is the object? 6. Find the wavelength of a 680-Hz tone in air, where the wave speed is 340 m/s. 7. Imagine a hiker camping in the mountains.Just before going to sleep he yells, WAKE UP, and the sound echoes off the nearest mountain, returning 8 h later. How far away is that mountain? 8. Harriet is told by her doctor that her heart rate is 70. 0 trounce per minute. If Harriets average riptide flow in the aorta during systole is 1. 5 x 10 -2 m/s, what is the wavelength of the waves of blood in Harriets aorta, created by her beating hea rt? 9. While flying to Tucson, Connies plane experiences upheaval that causes the hot chocolate in her cup to oscillate back and forth 4 times each second.If the waves of coffee have a wavelength of 0. 1 m, what is the speed of a wave moving through the coffee? 10. Danielle is push button her twin Dexter on a swing that hangs from a tree branch by 2. 0-m-long ropes. With what frequency will Danielle have to push Dexter when he swings? 11. In California, Clay is surfing on a wave that propels him toward the beach with a speed of 5. 0 m/s. The wave crests are each 20. m apart. A. What is the frequency of the water wave? B. What is the period?