Applying Concepts A piano tuner listens to a tuning fork vibrating at 440 Hz to tune a string of a piano. He hears beats between the tuning fork and the piano string. Is the string in tune? Explain your answer.

Ocean waves are partially reflected from the entrance to a harbor, where the depth of the water is suddenly less. What does this tell you about the speed of waves in water of different depths?

Drawing Conclusions If you yell or clap your hands while standing at the edge of a large rock canyon, you may hear an echo a few seconds later. Explain why this happens.

Describe the changes in elastic potential energy and kinetic energy that occur when a mass vibrates on a spring.

Sketch the abdominal area, and indicate the locations of the following regions: a. Epigastric. b. Umbilical. c. Hypogastric. d. Hypochondriac. e. Lumbar. f. Iliac.

Use the kinetic theory to explain the difference in wave speed in solids, liquids, and gases.

A friend standing 2 m away strikes two tuning forks at the same time, one at a frequency of 256 Hz and the other at 240 Hz. Which sound will reach your ear first? Explain.

Root Words The word reflection contains the root fled . Use a dictionary to find the origin and meaning of this root, and explain why it is appropriate that the word reflection contains this root. Then, list at least three other words that contain the root.

In an ocean wave, the molecules of water a. move perpendicularly to the direction of wave travel. b. move parallel to the direction of wave travel. c. move in ellipses. d. don't move at all.

An argon ion laser puts out 5.0 W of continuous power at a wave length of 532 nm. The diameter of the laser beam is 5.5 mm. If the laser is pointed toward a pinhole with a diameter of 1.2 mm, how many photons travel through the pinhole per second ? Assume that the light intensity is equally distributed throughout the entire cross-section al area of the beam. (1 W = J/s)

Find the equation of the given hyperbola. Vertices (-3, 0), (7, 0) and eccentricity e = 3

Replace the underlined word in each sentence below with the appropriate synonym from the following list: validity, evolved, implement, considerably, concept, and controversial. The $\underline{idea}$ of a flat tax has been debated for a long time.

Imagine you are shaking the end of a rope to create a series of waves. What will you observe if you begin shaking the rope more quickly?

Explain the three major influences on individual development, according to the biopsychosocial approach.