Table of Contents
- 1 Is energy conserved when a moving object slows to a stop?
- 2 What form of energy does not require matter for traveling through space?
- 3 Which coal has the most desirable burning properties and highest energy content?
- 4 What happens to energy when something slows down?
- 5 Which of the following does not require matter to move through it?
- 6 What type of energy is energy that is stored?
- 7 Can energy be lost?
- 8 Which coal has highest calorific value?
Is energy conserved when a moving object slows to a stop?
An object that falls twice as far will be moving twice as fast when it hits the ground. As we deplete our coal reserves, we can replace this lost source of energy by increasing our output of hydroelectric power. Energy is not conserved when a moving object slows to a stop.
What form of energy does not require matter for traveling through space?
Unlike conduction and convection, radiation does not need matter to transfer heat. Energy is radiated from the sun, through the vacuum of space at the speed of light.
Which thermodynamic law says that you Cannot?
The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. For example, turning on a light would seem to produce energy; however, it is electrical energy that is converted.
Which coal has the most desirable burning properties and highest energy content?
Anthracite contains 86%–97% carbon and generally has the highest heating value of all ranks of coal.
What happens to energy when something slows down?
A moving object can slow down for different reasons. One is because of friction and another one would be because it slows down, if you throw it up into the air for instance. Both objects are slowing down and therefore their kinetic energy decreases.
What happens to potential energy as an object slows down?
As the potential energy is increased due to the stretch/compression of a spring or an increase in its height above the earth, the kinetic energy is decreased due to the object slowing down.
Which of the following does not require matter to move through it?
The transfer of thermal energy by conduction and convection (does not) require matter. The transfer thermal energy by radiation (does not) require matter. A material in which thermal energy moves easily is an (insulator). Thermal energy is transferred by radiation more easily in (gases).
What type of energy is energy that is stored?
Potential energy is stored energy and the energy of position. Chemical energy is energy stored in the bonds of atoms and molecules.
Can energy be destroyed yes or no?
yes and no. Energy cannot be created or destroyed, but it can change from more-useful forms into less-useful forms. As it turns out, in every real-world energy transfer or transformation, some amount of energy is converted to a form that’s unusable (unavailable to do work).
Can energy be lost?
When energy is transformed from one form to another, or moved from one place to another, or from one system to another there is energy loss. This means that when energy is converted to a different form, some of the input energy is turned into a highly disordered form of energy, like heat.
Which coal has highest calorific value?
Anthracite (“coal-like”) is a hard, very low content of volatile compact variety of coal that has a high luster. It has the highest carbon content (between 92.1% and 98%), the fewest impurities, and the highest calorific content of all types of coal, which also includes bituminous coal and lignite.
What is the superior quality of coal called?
Complete answer: So, the superior quality coal is called Anthracite.