Forces Flashcards, test questions and answers
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What is Forces?
Forces are a fundamental concept in physics. They can be described as an influence that causes an object to accelerate, change direction, or experience some other form of motion. Every physical interaction between objects involves forces acting on them. Forces can come from many sources, including gravity, electric and magnetic fields, friction, pressure, and so on.There are four main types of forces: gravitational force (which holds planets together), electromagnetic force (which governs light and magnetism), strong nuclear force (which binds the nucleus of atoms together) and weak nuclear force (which is responsible for radioactive decay). In addition to these four fundamental forces there is also the mysterious dark matter which makes up most of the universe but cannot be directly observed. Gravitational force is one of the most powerful forces in nature; it holds stars and galaxies together against their mutual attraction to each other due to mass differences between them. This same attractive force keeps the planets orbiting around our Sun on their respective orbits as well as keeping us all stuck firmly onto Earth’s surface. It’s also this same gravitational pull that hurls asteroids towards us if they get too close. Electromagnetic Force is another important type of force because it affects almost all aspects of life on Earth: electricity itself depends upon electromagnetic fields generated by charged particles like electrons moving through conductors such as wire cables; magnets are able to attract and repulse objects with varying levels of strength depending upon their charge; radio frequencies travel through space thanks to electromagnetic waves generated at different frequencies; even light itself has its basis in electromagnetism. The strong nuclear force acts inside atomic nuclei where it binds protons and neutrons tightly together despite their electrical repulsion thus making atomic energy possible via fusion reactions occurring within stars across the cosmos. The weak nuclear force is much weaker than either electromagnetism or gravitation but still plays an important role in particle interactions – particularly those involving beta-decay processes during radioactive decay chains when unstable isotopes break down into more stable forms over time releasing radiation along the way…and ultimately helping us understand how elements were first created from primordial hydrogen gas clouds billions of years ago.