What happens to molecules when air heats? What happens when air is heated or cooled? So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward. This is the concept […]
Why is Group 15 called nitrogen?
Why is Group 15 called nitrogen? The Group 15 elements are generally known as the nitrogen family. All of the elements of this family have five electrons in their outermost energy level. This group is divided into nonmetals, semimetals, and metals by characteristic. Nitrogen is a diatomic gas and phosphorus is a solid. Why is […]
What are some examples of physical and chemical properties?
What are some examples of physical and chemical properties? Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change. What are the physical properties of materials? A material’s physical properties denote the physical state of materials that are exclusive […]
Which best describes the relationship between speed and velocity?
Which best describes the relationship between speed and velocity? Which best defines the relationship between speed and velocity? Velocity is speed with displacement. Smith is designing a race where velocity will be measured. Which best defines speed? Answer. It is the total distance traveled over the total time. Which best describes velocity? The velocity of […]
What should a solenoid be wrapped around?
What should a solenoid be wrapped around? A solenoid [nb 1] is a coil wound into a tightly packed helix. In physics, the term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it. How is an […]
Do Fireworks cause sonic boom?
Do Fireworks cause sonic boom? Fireworks generate three very noticeable forms of energy: a tremendous release of sound, bright light, and heat. The tremendous booms heard at ground level are the result of the rapid release of energy into the air, causing the air to expand faster than the speed of sound. This produces a […]
What separation means?
What separation means? 1 : the act or process of separating : the state of being separated. 2a : a point, line, or means of division. b : an intervening space : gap the separation between wheel spokes. 3a : cessation of cohabitation between a married couple by mutual agreement or judicial decree. What is […]
What factors affect memory recall?
What factors affect memory recall? Your personal experiences, beliefs, knowledge and mood affect your memories and perceptions when they’re being encoded in your brain. This means that when you retrieve a memory, your mood and other biases at that moment can influence what information you actually recall. What sense triggers memory the most? sense of […]
What is the best pans to cook with?
What is the best pans to cook with? Stainless Steel. Long-lasting, classic, uncoated stainless steel is a good choice for browning and braising. Nonstick. Durable nonstick coatings effortlessly release even delicate foods, including eggs and pancakes. Enameled Cast Iron. What is the best cookware set for the money? Best rated cookware sets of 2021 at […]
What is the hardest branch of physics?
What is the hardest branch of physics? The hardest thing that an undergraduate physics students must learn is the classical dynamics of spinning tops (also called “rigid bodies” in this context)….This Is The Hardest Concept To Grasp In Physics (Hint: It’s Not Relativity) Share to Facebook. Share to Twitter. Share to Linkedin. Who is the […]