Will Pangea form again? The last supercontinent, Pangea, formed around 310 million years ago, and started breaking up around 180 million years ago. It has been suggested that the next supercontinent will form in 200-250 million years, so we are currently about halfway through the scattered phase of the current supercontinent cycle. What is the […]
What is the characteristic of compound?
What is the characteristic of compound? Characteristics of a compound The properties of a compound are different from the properties of its constituents. Formation of a compound is generally accompanied by evolution of energy in the form of heat or light. A compound has a fixed melting point and boiling point. A compound is always […]
How many times will I be writing 2 if I write down numbers from 11 to 99?
How many times will I be writing 2 if I write down numbers from 11 to 99? How many times will I be writing 2 if I wrote down numbers from 11 to 199? Solution: From 11 to 100, count numbers such as 12,32,42,52,62,72,82,92 which are 8 in numbers plus numbers from 20,21,22,23,24,25,26,27,28,29, have digits […]
What are the two main types of energy?
What are the two main types of energy? Many forms of energy exist, but they all fall into two basic categories: Potential energy. Kinetic energy. What are the two types of mechanical energy? There are two main types of mechanical energy. They are motion energy and stored mechanical energy. Motion energy: This is the energy […]
What are examples of fast chemical reactions?
What are examples of fast chemical reactions? Chemical reactions that complete in a very short time, such as less than 10 -6 seconds, they are called fast reactions. Examples: Magnesium ribbon is burnt in the flame of Bunsen burner; it quickly gets combusted with a noticeable spark. Similarly, a neutralization reaction between acids and bases […]
Can dog whistles damage human ears?
Can dog whistles damage human ears? Some sounds (such as gunfire or standing next to a helicopter) are so loud (120-160 dB), that any brief exposure to them without wearing earmuffs or earplugs can damage hearing. (This means that the dog whistles are at a very high frequency but that they do not move the […]
What is CP CV called?
What is CP CV called? The Cp/Cv ratio is also called the heat capacity ratio. (i.e.) Heat Capacity ratio = Cp/Cv = Heat capacity at constant pressure/ Heat capacity at constant volume. How do you calculate CP in thermodynamics? cp = cv + R The specific heat constants for constant pressure and constant volume processes […]
How do printers use static electricity?
How do printers use static electricity? Photocopiers. This flow chart outlines how a photocopier works. Ink jet printers use static electricity to guide a tiny jet of ink to the correct place on the page. Laser printers work in a similar way. How does aluminum foil make static electricity? Electricity experiment for kids instructions: Cut […]
How fast can you go in a neighborhood?
Why is Common Core bad?
Why is Common Core bad? By focusing on grade-level skills that are highly academic in nature, the Common Core puts pressure on teachers at the early childhood and primary levels to teach using paper-and-pencil methods rather than using the rich exploratory experiential learning approaches that are developmentally appropriate for children from … What is the […]