Category: Physics

What is Newton disc explain with diagram? Newton’s colour disc – example Newton’s colour disc is a disc on which seven component colours of white light are painted. As it is rotated at high speed, it appears white suggesting the white light comprises of seven colours. What can you demonstrate by rotating Newton’s Colour disc […]

What is the most dangerous thing to humans? Of all the species in the world, the largest—and most dangerous—is the saltwater crocodile. These ferocious killers can grow up to 23 feet in length, weigh more than a ton, and are known to kill hundreds each year, with crocodiles as a whole responsible for more human […]

Does fission increase mass? The products of fission are more stable, meaning that it is more difficult to split them apart. Since the binding energy per nucleon for fission products is higher, their total nucleonic mass is lower. The result of this higher binding energy and lower mass results in the production of energy. Why […]

Does soundproof foam really work? This misconception is incredibly common – so if you are reading this thinking to yourself, “So, does sound-absorbing foam work? Isn’t foam used for soundproofing a room?” Unfortunately not. Foam doesn’t stop a sound, it absorbs or reduces echo within the room. How much does soundproof foam cost? Soundproofing Walls […]

How do schizophrenics feel? These simply mean experiences that someone with schizophrenia has, such as hallucinations, delusions, unusual physical movements, and illogical thoughts. Can a person know they are schizophrenic? Schizophrenia can be hard to diagnose for a few reasons. One is that people with the disorder often don’t realize they’re ill, so they’re unlikely […]

Which pressure must be higher in order for a liquid to boil? Boiling occurs when the vapor pressure reaches or exceeds the surrounding pressure from the atmosphere or whatever else is in contact with the liquid. At standard atmospheric pressure (1 atmosphere = 0.101325 MPa), water boils at approximately 100 degrees Celsius. Does vapor pressure […]

Which is the safest method of waste disposal among the following? The best methods of safe disposal are segregation and composting. After segregating the waste and separating materials for reuse and recycling, the waste material should be disposed of. Care must be taken that waste disposal does not pollute the air, groundwater, surface water and […]

What is the ideal temperature of water if it is pollution free? Pure water will remain neutral at 0°C (pH is 7.47), 25°C. (pH is 7.00) or 100°C. What happens to water molecules as they are heated? When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the […]

What is the angle of reflection if the angle of incidence is equal to 60 degrees? = 90 – 60 = 30 degrees. Since, angle of incidence = angle of reflection = 30 degrees. The incident ray will have an angle of reflection of 30 degrees (made with a surface normal to the mirror surface). […]

What is the biggest difference between geocentric model and heliocentric model? The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve […]