CHAPTER # 10
SIMPLE HARMONIC MOTION AND WAVES

Important Questions

How did the spider detect its prey?

Due to the vibrations created in the web, a spider can detect its prey.

What is the spring constant?

Spring constant (k) is the measure of the stiffness of spring. For instance; rigid springs have a large k value while soft springs have a small k value.

What is a Shock absorber?

A Shock absorber is used in automobiles to damp (resist) vibrations that are produced on the road over bumps. It consists of a piston moving through a liquid such as oil.

Why waves are important in our daily life?

Waves are essential to daily life because they transmit information and energy over large distances. For instance; sound waves, light waves, etc.

Does a mechanical wave pass through a vacuum?

Mechanical waves cannot pass through a vacuum because the vacuum is an empty space and mechanical waves require a material medium to propagate.

Why do transverse waves travel through solids at half the speed of longitudinal waves?

Because the restoring force exerted by the up and down motion is less than that of restoring force exerted by a back-and-forth motion in the case of longitudinal waves.

Why do longitudinal waves move faster in solids than in gases or liquids?

This is due to solids having less space between molecules and a stronger bond than gases or liquids. The transfer of energy between molecules is increased as a result, and the wave moves faster.

Why does a high frequency wave have more energy than a low frequency wave?

A high frequency wave contains more energy because producing a high frequency wave requires more energy per second than producing a low frequency wave.

How do geophysicists learn about earthquakes?

Earthquakes generate seismic waves that travel through the Earth's crust. Geophysicists learn about the internal structure of the Earth and the occurrence of future Earth activity by studying such waves.

What happens to the wave as it travels through deeper and shallower water?

When a wave is in deep water, its speed is high and its wavelength is large, but when it enters shallower water, its speed slows and its wavelength shrinks.

Chapter # 10 Exercise link (Simple Harmonic Motion and Waves).


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