What household devices use mechanical energy? Everyday Examples of Mechanical Energy Turning a doorknob. Breathing in and out. Hammering a nail. Riding a bicycle. Sharpening a pencil. Using kitchen appliances. Listening to music. Typing on a keyboard. What is the difference between kinetic and mechanical energy? The difference between kinetic and mechanical energy is that […]
Which is the best example of law of conservation of mass?
Which is the best example of law of conservation of mass? The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first […]
Is Atropia real?
Is Atropia real? You’ve never heard of Atropia? Well, it’s a fictitious country created by the U.S. Army. Like many real-world combat deployments, soldiers parachute out of the massive C-17 Globemaster into Atropia. What is Pineland? : land naturally dominated by pine forests. What is Atropia based on? The fictitious countries of Donovia and Atropia […]
What is a cycle in a Hertz?
What should you not use a carbon dioxide extinguisher on?
What should you not use a carbon dioxide extinguisher on? Unlike water and foam extinguishers, CO2 fire extinguishers do not work by cooling the fire and so are ineffective on fires involving flammable solids. Instead, CO2 extinguisher work by replacing the oxygen surrounding the flames with carbon dioxide, meaning the fire can no longer burn. […]
What type of evidence is a shoe print?
What type of evidence is a shoe print? Footwear evidence can be found in two forms, impressions and prints. The impression is normally described as a three-dimensional impression, such as an impression in mud or a soft material; and the print is described as a print made on a solid surface by dust, powder, or […]
What happens if the Earth spins backwards?
What happens if the Earth spins backwards? If Earth stopped rotating, it would be a disaster, but if it were to rotate backwards, it might not be as catastrophic. Trade winds at the equator, which normally blow westward, would reverse — hurricanes would no longer travel from east to west across the Atlantic. How long […]
Did Spain Help in the American Revolution?
Did Spain Help in the American Revolution? Spain contributed to the American Revolution from the onset by secretly providing money, gunpowder and supplies to the Americans. Clearly Spain, one of the world’s largest colonial powers, had a lot to lose by openly supporting colonial revolution in Britain’s colonies. What does England call the Revolutionary War? […]
Why is science and technology important?
Why is science and technology important? Technology, science and knowledge are important in modern contemporary society. Studies of technology and science provides students with insight into how different processes of knowledge are initiated and progressed, and how innovative technological processes are developed, employed and increase in importance. What is the advantages of technology? Advantages of […]
What is a positive terminal and negative terminal?
What is a positive terminal and negative terminal? Electrical polarity is a term used throughout industries and fields that involve electricity. There are two types of poles: positive (+) and negative (−). This represents the electric potential at the ends of a circuit. A battery has a positive terminal (+ pole) and a negative terminal […]