Category: Physics

What are the three main parts of a sheathed cable? Cables consist of three major components: conductors, insulation, protective jacket. What is the plastic part around a copper wire? Most electrical wire is covered in a rubber or plastic coating called insulation. Why is plastic used to cover copper wires? Electricity is very dangerous and […]

What is the standard interval between contour lines on a map? Individual contour lines on a topographical map are a fixed interval of elevation apart known as a contour interval. Common contour intervals are 5, 10, 20, 40, 80, or 100 feet. Why do contour lines never cross? Contour lines never cross on a topographic […]

How does volume affect buoyancy? Buoyancy is created when the contained volume of a certain material (gas or liquid) that is lighter and placed into a heavier surrounding material either gas or liquid. So if the volume of the buoyant (lighter) object is increased then the buoyancy will also increase. How do you calculate buoyancy […]

What can you add to a bucket of water that will make it weigh less? Anything with a lower density than water and displaced water such that you have less than 5 gallons of water will do that. Put an inflated balloon in the bucket and attach a stiff snap-on lid. The lid will submerge […]

What is nitrogen fixation definition? Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants. […]

Can you levitate a person with magnets? Normal things, even humans, can levitate if they are placed in a strong magnetic field. Such materials can be levitated using magnetic fields of about 10 Tesla. Can you fly with magnets? So the short answer is that a magnetized material is considered a hazardous material and is […]

How much does an elephant eat in one day? Diet. Elephants eat roots, grasses, fruit, and bark. An adult elephant can consume up to 300 pounds of food in a single day. Which categories of goods are rival in consumption? There are four types of goods based on the characteristics of rival in consumption and […]

What best describes the bonding in a water molecule? Explanation: A bond formed by sharing of electrons is known as a covalent bond. Therefore, an oxygen atom combines with two hydrogen atoms by sharing of electrons. Thus, we can conclude that the statement an oxygen atom shares an electron pair with each H atom, best […]

What are the energy demands of soccer? Aerobic energy production appears to account for more than 90% of total energy consumption. Nevertheless, anaerobic energy production plays an essential role during soccer matches. During intensive exercise periods of a game, creatine phosphate, and to a lesser extent the stored adenosine triphosphate, are utilized. What qualities do […]

What is the best angle for air to glass transition? 56.31° Can the Brewster’s angle occur at the interface from air to glass? The Brewster’s angle can occur at the air/glass interface because there are infinite ways that the incidentand refractive angle will add up to 90°. What will be the Brewster angle for a […]