It is true that the greater the amplitude of a sound wave, the louder the sound. Amplitude is defined as the measure of change in atmospheric pressure caused by sound waves.
Amplitude is measured in the amount of force applied over an area and is most commonly measured in newtons per square meter (N/m2). A newton is considered the amount of force it takes to accelerate a 1-kilogram object by 1 meter per second (m/s).
The lowest threshold that a human can hear sound is 0.00002 N/m2. The threshold of pain for hearing a sound is considered to be 60 N/m2. Both of these numbers can vary depending on the individual and age but can be used as general guidelines.Learn More
A Venturi pump uses the kinetic energy in a fast-moving fluid to move another liquid or semi-liquid substance. These pumps are abundant in sewage treatment plants because they reliably move large volumes of thick, heterogeneous material without clogging or locking. Venturi pumps are also useful in quarries, refineries and other industries that generate thick liquid waste.Full Answer >
Solids maintain a definite shape and volume because their atoms are tightly bound to each other. Solids can be crystalline or amorphous. In crystalline solids, such as ice and metal, atoms are arranged in a regular geometric lattice. In amorphous solids, such as wax and many plastics, the arrangement is irregular.Full Answer >
Force and motion are related because exerting force on an object causes a change in motion. An example would be kicking a ball to propel it forward. Two examples of natural forces are gravity and magnetism.Full Answer >
Isaac Newton's theory of gravity states that every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The law is represented as: F=G (m1m2)/R.Full Answer >