Category: Physics

Is iron rusting in the presence of moist air a physical change? Rust is a reddish-brown substance formed on iron when it has been exposed to fresh air and moisture for a long time. This process is a chemical change called rusting. What is the chemical reaction of rusting? Rusting is an oxidation reaction. The […]

Is continental or oceanic plates heavier? Because of their heavy ferromagnesian elements, oceanic plates are much denser than continental plates. The average density of ocean plates is approximately 200 pounds per cubic foot, while continental crust ranges between about 162 and and 172 pounds per cubic foot. What are 3 differences between oceanic and continental […]

When both quantitative and qualitative methods are beneficial? A combination of qualitative and quantitative research is typically best for most design projects if budget allows. By using both methods you can achieve a deeper level of insight through the exploratory nature of the research in addition to statistical evidence to support your design decisions. What […]

Did Einstein say we Cannot solve our problems with the same thinking we used to create them? The supposed Einstein quote from Skeptic reads “the world we have made as a result of the level of thinking we have done thus far creates problems that we cannot solve at the level of thinking at which […]

What are the examples of physical geography? Physical geography also includes the processes, such as erosion, landslides, earthquakes, and volcanoes, that shape and change the landforms around us. Other elements of physical geography include rock types and minerals, a field known as geology. What are the main elements of physical geography? (b). Elements of Geography […]

Does your weight change in an elevator? When the elevator is moving, we will weigh our normal weight. Since we are already moving at the same speed as the elevator (up or down), nothing is affecting us to change our weight. However, when the elevator starts to go or stops, our body resists it. The […]

Is there gravity in a vacuum? In a vacuum, gravity causes all objects to fall at the same rate. The mass of the object does not matter. If a person drops a hammer and a feather, air will make the feather fall more slowly. But if there were no air, they would fall at the […]

Can concave lens produce real image? Convex (converging) lenses can form either real or virtual images (cases 1 and 2, respectively), whereas concave (diverging) lenses can form only virtual images (always case 3). Real images are always inverted, but they can be either larger or smaller than the object. What are the properties of lenses? […]

What are the basic principles of social facilitation? Social facilitation is the theory that we tend to do better on easy tasks when we know we are being watched or assessed. We do less well on more complex tasks when we know we are being observed by others. What are the effect of social facilitation? […]

What happens if you put a pencil in a glass of water? As you sight at the portion of the pencil that was submerged in the water, light travels from water to air (or from water to glass to air). This light ray changes medium and subsequently undergoes refraction. As a result, the image of […]