The two forces that determine whether an object floats or sinks are buoyancy and pressure. Buoyancy is determined by the density of the object and the density of the medium.
The property of being able to float or sink in mediums does not depend on the weight of the object. For an object to float, it must be less dense than the medium it is put in, creating a positive buoyant force. Pressure from the water creates an upthrust force that also determines whether an object sinks or floats. If the upthrust force is great enough, an object could float even though it would generally sink.Learn More
The two main branches of physical science are physics and chemistry. Physics primarily deals with forces and the interaction of matter and energy. Chemistry, on the other hand, studies how interaction alters the properties of atoms, molecules and substances.Full Answer >
According to The Physics Classroom, the net force is the vector sum of all the forces acting on an object. Forces, as vectors, are measured in terms of magnitude and direction.Full Answer >
Some examples of frictional forces include the force between shoes and the ground when walking, the force between tires and the road while driving, and the force between a falling object and the air surrounding it. Many machines also involve the use of frictional forces.Full Answer >
No scientific methods can determine the length of time for which a fingerprint lasts on an object. There are many factors that determine how long a fingerprint lasts on any surface or object, with environmental conditions being the primary influence on the longevity of the prints.Full Answer >