Category: Physics

What happens if a hot air balloon lands in your yard? As a general rule, pilot or crew chef are supposed to ask the property owner if it is OK to land on private property and take the balloon down. If they did not ask, they are basically trespassing. Trespassing pilot and crew may harm […]

How many atoms are in FCC? four atoms What are 111 planes? The symbol (111) represents Miller indices for an infinite set of parallel planes, with intercepts 1, 1 & 1 along the three crystallographic axis (unit lattice parameter along these), which pass through lattice points. On what planes of a bcc structure can the […]

How gravity affects walking up and down the stairs? 3 Answers. You have to lift up your body mass under the presence of gravity, so you have to overcome the force of gravity. While climbing up the stairs you have to put force on ground, more then your weight, which put same force but in […]

What is the magnetic field in the center of the solenoid? For the first part, since the solenoid is long we can approximate the magnetic field inside to be uniform and is given by Bz=μ0NI, so we can say that the magnetic field at the center is also μ0NI. What is the ferrite core used […]

Do airplanes have constant velocity? Since there is no net external force on the aircraft, the aircraft will maintain a constant airspeed as described by Newton’s First Law of Motion. However, if the forces become unbalanced, the aircraft will move in the direction of the greater force. How is an aircraft held into a turn? […]

How can detergents cause pollution? Phosphates in detergents can lead to freshwater algal blooms that releases toxins and deplete oxygen in waterways. When the algae decompose, they use up the oxygen available for aquatic life. Does Soap pollute rivers? All soaps, unfortunately even biodegradable ones, can contaminate fresh water sources. Materials are usually deemed biodegradable […]

What is the greatest contribution of the Bernoulli brothers to mathematics? Jacob Bernoulli’s first important contributions were a pamphlet on the parallels of logic and algebra published in 1685, work on probability in 1685 and geometry in 1687. His geometry result gave a construction to divide any triangle into four equal parts with two perpendicular […]

What is a bias? Bias is a disproportionate weight in favor of or against an idea or thing, usually in a way that is closed-minded, prejudicial, or unfair. Biases can be innate or learned. People may develop biases for or against an individual, a group, or a belief. In science and engineering, a bias is […]

How much does a hovercraft cost? Rescue hovercraft range from $28,000 to $79,000 and commercial hovercraft from $36,000 to $90,000. Trailers range from $3,000 to $12,600. (Prices in US Dollars.) HOW IS A HOVERCRAFT DIFFERENT FROM AN AIRBOAT? Why did they stop using hovercrafts? The Channel’s hovercraft service had its peak year in 198 when […]

How can standing waves be prevented? The solution to stopping a standing wave is cutting the offending frequency of the related instrument….Standing waves can be caused when waves bounce between; Opposite walls. Four sides of the room. All six sides of the room (given most rooms have four walls, a floor, and a ceiling!) Why […]