Slinky Waves

The water waves below are traveling along the surface of the ocean at a speed of 2.5 m/s and splashing periodically against Wilbert's perch. Each adjacent crest is 5 meters apart. The crests splash Wilbert's feet upon reaching his perch. How much time passes between each successive drenching?

• 2 seconds
• .5 seconds
• 1.5 seconds
• 12.5 seconds

 A teacher attaches a slinky to the wall and begins introducing pulses with different amplitudes. Which of the two pulses (A or B) below will travel from the hand to the wall in the least amount of time? 

• they arrive at the same time
• A
• B
• the waves  won't transmit through a slinky

 The teacher then begins introducing pulses with a different wavelength. Which of the two pulses (C or D) will travel from the hand to the wall in the least amount of time ? 

• C
• D
• its a tie
• no waves travel through slinkys

The time required for the sound waves (v = 340 m/s) to travel from the tuning fork to point A is ____ .

• 17 seconds
• .059 seconds
• 1.7 seconds
• 6800 seconds

A pendulum is observed to complete 23 full cycles in 58 seconds. Determine the period and the frequency of the pendulum.

• .40 Hz and 2.5 seconds
• 1334 HZ and 25 seconds
• Can not callculate without the length
• Can not calculate without the vibrations

Two waves are traveling through the same container of nitrogen gas. Wave A has a wavelength of 1.5 m. Wave B has a wavelength of 4.5 m. The speed of wave B must be ________ the speed of wave A.

• A is three times a s fast as B
• 1/3
• the same as
• B is 3x as fast

While hiking through a canyon, Noah Formula lets out a scream. An echo (reflection of the scream off a nearby 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. 

• 140 meters
• 280 meters
• 834 meters
• 28 5278 meters

Two waves are traveling through the same container of nitrogen gas. Wave A has a wavelength of 1.5 m. Wave B has a wavelength of 4.5 m. The speed of wave B must be ________ the speed of wave A.

• A is three times a s fast as B
• 1/3
• the same as
• B is 3x as fast

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 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. The camera lens then focuses at that distance. 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? 

• 25.5 meters
• 51 meters
• 2266 meters
• 1/51 meters

 Mac and Tosh are resting on top of the water near the end of the pool when Mac 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.

• 100 m/s
• 2 m/s
• 50 m/s
• 75 m/s