Waves Questions and Answers

Why don't electromagnetic waves need particles to propagate?

A 8 kg mass vibrates according to the equation x = 0.57cos5.9t where x is in meters and t in seconds. Calculate the maximum acceleration of the wave in m/s². Round your answer to 2 decimal places.

A block-spring system oscillates with an amplitude of 2.1 cm. If the spring constant is 272 N/m and the mass of the block is 0.51 kg, determine the maximum speed in m/s of the block. Round your answer to 2 decimal places.

A cord of mass 0.63 kg is stretched between two supports 31.5 meters apart. If the tension in the cord is 130 N. What is the wave speed in m/s?

A particle undergoes simple harmonic motion with amplitude 0.18m, what is the total distance it travels in one period? (A) 0.90 m (B) 0.72 m (C)0.36 m (D)0.54 m

1. A large anchor is being lifted into a boat with metal sides. As the anchor leaves the water it hits the side of the boat, making loud sounds (a longitudinal wave) and making transverse waves on the surface of the water. a. Draw and explain a model of the sound wave showing how the medium moves and how the energy of the wave moves. b. Draw and explain a model of the water waves showing how the medium moves and how the energy of the wave moves.

Suppose your slinky was stretched to 4.5 m. You complete Scenario 3 with a frequency of 0.82 Hz. What is the wave speed in m/s? Remember to find your wavelength first! SLINKY LENGTH divided by NUMBER OF FULL WAVES SHOWING Round your answer to the nearest 0.1 (tenths place). Do not add units.

A string fixed at one end and free at the other end is resonating in its third harmonic. If the displacement equation is y(x, t) = 0.08 sin(6.28x) cos(512t). What is the length of the string (x, y are in m) ? 0.5 m 0.75 m 1.25 m 1m

Currently, CD players use a laser diode producing light with a wavelength of 780 nm. The index of refraction of the polycarbonate plastic layer is 1.55. If blue laser light with a wavelength of 475 nm were to be used, by what amount would the depth of the pits in the CD surface need to be changed? [A=3]

A 6 kg mass vibrates according to the equation x = 0.62cos7.8t where x is in meters and t in seconds. Calculate the maximum acceleration of the wave in m/s². Round your answer to 2 decimal places.

The equation of a transverse wave in a cord is given by: y (x, t) = (2.0cm) sin {2π/ (0.040 s) + 2πx/ (0.50 m) } Amplitude-Blank 1 cm Wavelength=Blank 2 m Blank 1 ________________ Blank 2 ________________

A 0.43-kg mass at the end of a spring vibrates 3.1 times per second with an amplitude of 0.17 meters. Determine the velocity in m/s when it passes the equilibrium point. Round your answer to 2 decimal places.

A periodic and recurrent disturbance in a lake produces waves that radiate outward from the source, resulting in circular wave patterns. The distance between successive wave crests __ is meter if the source frequency is 5 Hz and the wave speed is 6m/s. Round your answer to 2 decimal places.

4.1 sinusoidal waves with a frequency of 59 Hz were created on a string with a length of 1.49 m and a mass of 496 g. Determine the rope's wave tension force based on these values. Round your answer to 2 decimal places.

Because of the waves on the sea, a fisherman observes his boat going up and down on a regular basis. The boat travels 4.31 meters in 2.74 seconds from its highest point to its lowest position. The fisherman notices that the wave crests are 7.9 meters apart. What is the frequency? Round your answer to 3 decimal places.

Because of the waves on the sea, a fisherman observes his boat going up and down on a regular basis. The boat travels 6.82 meters in 7.45 seconds from its highest point to its lowest position. The fisherman notices that the wave crests are 3.1 meters apart. What is the speed of the wave? Round your answer to 2 decimal places.