Category: Physics

Is EMF sensitivity a real thing? Electromagnetic hypersensitivity (EHS) is a claimed sensitivity to electromagnetic fields, to which negative symptoms are attributed. EHS has no scientific basis and is not a recognised medical diagnosis. Does electromagnetic waves effect on human body? The main effect of radiofrequency electromagnetic fields is heating of body tissues. Despite extensive […]

Can fossils be found in granite? Most scientists will say it is very unlikely for fossils of any kind of be found in granite because granite forms at great depths, under conditions that would obliterate organic tissue. It is possible for the native sedimentary rock possessing fossils to be introduced to magma. What environments are […]

Is neptunium man-made? Uranium, found in rock, soil and water, undergoes a natural nuclear reaction that results in small amounts of isotopes Np-237 to Np-240. The majority of neptunium, however, is anthropogenic; that is, it is created as a byproduct of reactions in nuclear power plants. Why is it called americium? Americium was first isolated […]

What is the working principle of inductor? An inductor is a passive electronic component which is capable of storing electrical energy in the form of magnetic energy. Basically, it uses a conductor that is wound into a coil, and when electricity flows into the coil from the left to the right, this will generate a […]

Why electrical appliances are not connected in series? Answer. Electrical appliances are not connected in series because current will be same through all the appliances connected whereas appliances have different current ratings and also that voltage decreases as more no. Of appliances are connected. What happens if the household electric appliances are connected in series? […]

What is the half life of isotope B? There are 13 radioisotopes that have been discovered, with mass numbers from 7 to 21, all with short half-lives, the longest being that of 8B, with a half-life of only 770 milliseconds (ms) and 12B with a half-life of 20.2 ms. All other isotopes have half-lives shorter […]

What do you mean by central orbit? A central orbit is an orbit in which the attractive force between a central mass and test mass is a central force, i.e., is directed towards the central mass. A general central force law is therefore given by. (1) for any function f(r), where is the force per […]

What is the cause of resistance? Resistance is caused in a conductor by the free electrons. These free electrons collide with each other and with the ions and atoms that oppose their free movement. This obstruction is known as resistance. Does temperature increase resistance? As electrons move through a metal conductor, some collide with atoms, […]

What does bully for you mean? To treat in an overbearing or intimidating manner. To force one’s way aggressively or by intimidation. : : : : ADJECTIVE: Excellent; splendid. : : INTERJECTION: Used to express approval: Bully for you! Does bully mean good? (US, slang) Very good; excellent. A bully horse. (slang) Jovial and blustering; […]

Is a double bond one electron group? Double or triple bonds count as a single electron group. The molecule will not be a perfect equilateral triangle because the C–O double bond is different from the two C–H bonds, but both planar and triangular describe the appropriate approximate shape of this molecule. What are the three […]