Answer: 1.) The intensity of the sound wave which reaches the listener’s ear.
2.) The square of the amplitude of the sound wave.
3.) The mass of air which can be set into vibration.
Explanation:
Answer:
Walking,horse pulling the cart, firing of a gun
Explanation:
when we walk we exert force on earth, earth exerts equal force of us
horse applys force in in opposite direction on earth,earth applys equal force and it pulls the cart
when we fire a gun,it apply equal force of us.It is called recoil velocity of a gun
Answer:
Physics is an exciting intellectual adventure that inspires young people and expands the frontiers of our knowledge about Nature.
Physics generates fundamental knowledge needed for the future technological advances that will continue to drive the economic engines of the world.
Physics contributes to the technological infrastructure and provides trained personnel needed to take advantage of scientific advances and discoveries.
Physics is an important element in the education of chemists, engineers and computer scientists, as well as practitioners of the other physical and biomedical sciences.
Physics extends and enhances our understanding of other disciplines, such as the earth, agricultural, chemical, biological, and environmental sciences, plus astrophysics and cosmology - subjects of substantial importance to all peoples of the world.
Physics improves our quality of life by providing the basic understanding necessary for developing new instrumentation and techniques for medical applications, such as computer tomography, magnetic resonance imaging, positron emission tomography, ultrasonic imaging, and laser surgery.