Category: Physics

What grows in swampy areas? Perennials Joe-Pye weed (Eupatorium maculatum) Horsetail (Equisetum hyemale) Corkscrew rush (Juncus effusus) Northern blue flag (Iris versicolor) Papyrus (Cyperus papyrus) Marsh marigold (Caltha palustris) Why are swamps so creepy? The unknown. Many people have a fear of the unknown, and that fear is a major reason why swamps are so […]

What are the 3 main nutrient cycles in an ecosystem? The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life. What is a […]

What makes a paper airplane fly better? Thrust is the forward movement of the plane. The initial thrust comes from the muscles of the “pilot” as the paper airplane is launched. Lift comes when the air below the airplane wing is pushing up harder than the air above it is pushing down. It is this […]

Is Anti-Gravity theoretically possible? In the 20th century, Newton’s model was replaced by general relativity where gravity is not a force but the result of the geometry of spacetime. Under general relativity, anti-gravity is impossible except under contrived circumstances. How did they do zero gravity in away? For the space scenes, they attached each actor […]

What is the most important organ in a human body? The brain What type of structure is the human body? An organism is a living being that has a cellular structure and that can independently perform all physiologic functions necessary for life. In multicellular organisms, including humans, all cells, tissues, organs, and organ systems of […]

How do you tell if current is clockwise or counterclockwise? It is “clockwise” when you look at your hand thumb-on, or when you look at the change pointing towards you. This means that if a current follows that curling, it goes to a higher voltage; or if it opposes that curling, it goes to a […]

What is valve angle? Valve angle defined as the angle between a valve axis and a cylinder axis is one of the most important design factors that may have an influence on valve train design, cylinder head size, in-cylinder flow, etc. What is Valve face angle? The face of the valve is usually ground to […]

What is the minimum resultant force? Minimum resultant is when they direction is opposite : The magnitude of R resultant in this case is |R| = 4 – 3 [N] = 1 [N] How do you find the maximum and minimum resultant force? Here a= 12N, b=5N and let x be the angle between the […]

How many lines is 150 words? 17 lines Why is I am the shortest sentence? The sentence I am. certainly has a subject (I) and a predicate (am), and it expresses a complete thought, as well. So when your school paper stated that I am. is the shortest sentence in English, its editors meant that […]

Do you oil both sides of a cutting board? Oil both sides of the cutting board as well as the edges. Prop the board against a wall or sink to dry overnight. If any excess oil remains on the wood the next day, you can wipe it off with a rag. How long do you […]