Please select the correct statement about the amplitude of a wave. a. The amplitude of a wave can be either a positive or a negative value. b. The amplitude of a wave can be a negative value. C. The amplitude of a wave is always a positive value.

A sound wave traveling in 20°C air has a pressure amplitude of 0.5 Pa. What is the intensity of the wave?

a. In your own words, define what a longitudinal wave is.b. Give an example of a wave that, from your own experience, you know is a longitudinal wave. What observations or evidence tells you this is a longitudinal wave?

A wave initially has an amplitude of 2m, but its amplitude soon changes to 4m. What is the new wave energy compared to the original wave energy? a. The new wave energy is double (2x) the original wave energy. b. The new wave energy is the same as the original wave energy.c. The new wave energy is quadruple (4x) the original wave energy.d. The new wave energy is half (1/2) of the original wave energy.

6. The following equation is for a transverse wave. y(x,t)=(5.00cm)sin 2.00 rad x+ 4.00- rad t+rad 2 a. What is the amplitude? b. What is the wave number? c. What is the wavelength? d. What is the angular frequency? e. What is the frequency? f. What is the period? g. What is the wave number? h. What is the wave speed? i. Is the wave traveling in the positive or negative direction?

3. The picture to the right shows a rope ocillating. The person creating this wave is moving her hand up and down 2 times each second. The amplitude of the wave is 0.5 Length = 4.00m meters. a. Determine the wavelength (2) of the wave. b. Determine the frequency (f) of the wave. c. Determine the period (T) of the wave. d. Determine the wave speed (v) of the wave. e. How many seconds will it take for the wave to travel 32 meters?

D. inversely proportional to the square of the amplit 2. If the amplitude of sine wave is doubled, the intensity A. Remains the same. C. Increases by factor 4. D. Increases by factor 16 B. Increases by factor 2. 3. A mass suspended from the end of the spring vibrates up and down frequency and period of the vibration? A 1.5Hz, 0.67sec. 4. Á block of mass 1.6kg is attached to a horizontal spring that has forc compressed 2cm and is then released from rest. At what speed will position if a constant friction force of 1ON retards its motion from th A 70m/s. 5. Which one of the following statements is true a spring-mass system B. 0.67HZ, 1.5 sec. C. 0.0012HZ, 864sec. B. 50m/s. C. 70cm/s. uface? 11 time

Write P if only statement A is correct, H if only statement B is correct, Y if both statements are correct and S if both statements are incorrect. 1. A. Waves are created by vibrations. B. As wave moves through a medium, the individual particles of the medium move from the source of the wave to another location some distance away 2. A. Doubling the frequency of a wave source (without altering the medium) doubles the speed of the wave. B. Amplitude and frequency affects the energy of a wave. 3. A. High frequency waves are far apart and low frequency waves are close together. B. X-ray waves are low energy waves. 4. A. You cannot reflect all waves. B. All waves are visible. 5. A. During refraction, a wave bends because it hits the edge of a barrier. B. As a wave changes media, its speed changes.

The vertical position, y, of any point on a rope that supports a transverse wave travelling horizontally is given by the equation: y = 0.5 sin(4nt + 5Tmx) with x and y in meters and t in seconds. Find the: a. amplitude b. angular frequency c. frequency d. period e. wavelength f. wave speed g. angular wave number h. Does this wave travel in the +x or –x direction?

The vertical position, y, of any point on a rope that supports a transverse wave travelling horizontally is given by the equation: y = 0.5 sin(4πt + 5TX) with x and y in meters and t in seconds. Find the: a. amplitude b. angular frequency c. frequency d. period e. wavelength f. wave speed g. angular wave number h. Does this wave travel in the +x or -x direction?