1 Buoyancy (also known as the buoyant force) is the force exerted on an object that is wholly or partly immersed in a fluid. 2  The symbol for the magnitude of buoyancy is B or FB.3  As a vector it must be stated with both magnitude and direction. Buoyancy (also known as the buoyant force) is the force exerted on an object that is wholly or partly immersed in a fluid. 2  The symbol for the magnitude of buoyancy is B or FB.
epicenter. 1  Also, epicentrum. Geology. a point, directly above the true center of disturbance, from which the shock waves of an earthquake apparently radiate. 2  a focal point, as of activity: Manhattan's Chinatown is the epicenter of the city's Chinese community.
An earthquake's epicenter is _____. (1 point)the place on Earth's surface directly above the focus. a spot halfway between the focus and the surface. the spot below the focus. any spot along the nearest fault. 2. When an earthquake occurs, energy radiates in all directions from its source, which is called the _____. (1 point)epicenter. focus. fault. seismic center. 3. Earthquakes are usually associated with _____. (1 point)violent weather. faults. large cities.