In physics, energy is a system's capacity to perform work, which is force acting on an object. Energy has many forms, including kinetic or mechanical energy, potential energy, light energy and heat energy. The basic rule... More »

The movement of atoms within a substance generates thermal energy. Basically, this is the form of energy that comes as a result of heat. As atoms in an object move faster, temperature rises. As a result, thermal energy i... More »

Heating oil is an environmentally safe source of energy, especially when used in new heating systems, as it produces almost no particulate emissions. Emissions from all the oil-fueled home heating systems add up to be ab... More »

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A wedge utilizes a principle known as mechanical advantage in order to reduce the force needed to lift or separate an object. When driven under load, wedges function by transferring the direction of force applied. More »

Mechanical energy is defined as the energy of an object or system due to its motion or position. It is the sum of the kinetic and potential energy of an object. All moving objects have mechanical energy, whether they are... More »

In physics, "work" is when a force applied to an object moves the object in the same direction as the force. If someone pushes against a wall, no work is done on the wall because it does not move. However, depressing a l... More »

In physics, "displacement" is defined as the change in position of an object, including how far the object travels and in what direction. If an object moves around but returns to its original position, the object will mo... More »

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