Category: Physics

Is Kryptonite a Krypton? Despite its name, Kryptonite is not made of the element Krypton. There are a number of versions of Kryptonite over the seven decades Superman has existed, but no matter when it is described, it is almost never composed entirely of the noble gas, Krypton. Can Kryptonite kill Batman? Exposure to kryptonite […]

Why would a generator run but not produce electricity? The most common cause of portable generators failing to produce electricity is from the loss of residual magnetism. Generators work by moving electrical conductors through a magnetic field. Your generator does not have magnets. The little bit of magnetism is enough to produce a small amount […]

What is the value of 10 11 g in SI units? In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2. The direction of the force is in a straight line between the two bodies and is attractive. Thus, an apple falls from a tree because it feels the gravitational force of […]

How can a diode be reverse biased? When voltage is applied across a diode in such a way that the diode allows current, the diode is said to be forward-biased. When voltage is applied across a diode in such a way that the diode prohibits current, the diode is said to be reverse-biased. What happens […]

How do you know where north is? Say it is two o’clock, draw an imaginary line between the hour hand and twelve o’clock to create the north-south line. You know the sun rises in the east and sets in the west so this will tell you which way is north and which way south. If […]

What is the law of inclusions? The Law of Inclusions. If one rock body contains fragments of another rock body it must be younger than the fragments of rock it contains. Which rock layer was the youngest? Over time, the sediments pile up to form horizontal layers of sedimentary rocks. The bottom layer of rock […]

When an electron enters a transverse electric field its path will be? Here the direction of magnetic field and electron is perpendicular . The magnetic force is F=q(VXB), hence the force is perpendicular to velocity . The Path is circular . Can you change the kinetic energy of a charged particle? The magnetic field can […]

What is the force a table exerts on a book to keep it on top of the table? The force that the book exerts on the table is a normal force, not a weight force. (The book’s weight doesn’t act on the table, it acts on the book.) It’s equal in magnitude to the weight […]

Which is the main components of fiber optic communication system? The basic components are light signal transmitter, the optical fiber, and the photo detecting receiver. The additional elements such as fiber and cable splicers and connectors, regenerators, beam splitters, and optical amplifiers are employed to improve the performance of the communication system. Why optical fiber […]

How long does an ice cube take to melt? 45 to 60 minutes Which shape of ice cube melts the fastest? rectangular ice cube Does ice melt at 32 degrees? At temperatures above 32°F (0°C), pure water ice melts and changes state from a solid to a liquid (water); 32°F (0°C) is the melting point. […]