Why is burning of candle is both physical and chemical change? Wax of the candle is made of carbon and hydrogen which reacts with oxygen on burning and changes into carbon dioxide gas and water which escapes into the air. This is a chemical change. As a result, candle melts and reduces in size. This […]
What characteristics are used to identify metamorphic rocks?
What characteristics are used to identify metamorphic rocks? Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth’s crust. They are crystalline and often have a “squashed” (foliated or banded) texture. What is the classification of igneous rocks based on quizlet? […]
Does current always flow in a loop?
Does current always flow in a loop? Current doesn’t have to flow in a loop, if something is losing charge (like an hot electron plate in space) the charge leaves and never comes back because the electrons boil off. Current is defined by amperes law you could imagine drawing a surface around the plate and […]
What does a sign in the Device Manager indicate?
What does a sign in the Device Manager indicate? On Windows 10, sometimes, Device Manager will show a device with a yellow exclamation mark. When this happens, it indicates that the system has encountered a problem with that particular piece of hardware. Usually, it comes down to a hardware conflict of some sort, or missing […]
Does blue light have a higher frequency than green?
Does blue light have a higher frequency than green? Blue light has a shorter wavelength and therefore a higher frequency. Blue light has a shorter wavelength and therefore a higher frequency as compared to green light. Some reptiles can see light of shorter wavelengths than humans can see. Which is the least refracted Colour in […]
Is the Ferber method cruel?
Is the Ferber method cruel? The Ferber method is not appropriate as a treatment for most child sleep problems. When parents consider sleep training, it’s usually because their children are experiencing bedtime problems and/or disruptive night wakings. How do I teach my baby to self soothe? Master the timing. Create a bedtime routine. Offer a […]
How does angle affect work?
Can wood exist as a liquid?
Can wood exist as a liquid? As a result of the chemical, irreversible breakdown of its components, wood does not melt. Although the water and volatile matter would evaporate in the vacuum, the long cellulose fibers in wood would strongly inhibit wood’s transition to the liquid state. Can everything be a liquid? Yes, every element […]
How long is a train with 100 cars?
How long is a train with 100 cars? 5,200 feet What is the longest freight train in the world? TRANSNET, South Africa, broke its own record for operating the longest freight train, and set a new world record on October 24 when it ran a 375-wagon manganese train on the 861km Sishen – Saldanha heavy-haul […]