Category: Physics

Who is credited with creating the first periodic table? British chemist John Newlands was the first to arrange the elements into a periodic table with increasing order of atomic masses. He found that every eight elements had similar properties and called this the law of octaves. How did Moseley establish more accurate periodic table? by […]

What is the formula of center of mass? The center of mass can be calculated by taking the masses you are trying to find the center of mass between and multiplying them by their positions. Then, you add these together and divide that by the sum of all the individual masses. What is the Centre […]

How many electrons does a 60 watt light bulb pass per second? As Incandescent lamp is a resistive load , Current that will flow through bulb is 0.5 Amp. By definition 1 Amp is equal to one coulomb of charge per second. Charge of an individual electron 1.602 × 10^-19 coulombs. Hence 1 coulomb of […]

How do particles behave in solid? Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. In the solid the particles vibrate in place. Liquid – In a liquid, particles will flow or glide over one another, but stay toward the […]

What is an example of a positive mutation? Quick Points. Mutations are changes in the DNA of an organism. Mutations can be beneficial, benign, or malignant, depending on where in the genetic code they are located. Examples of beneficial mutations include HIV resistance, lactose tolerance, and trichromatic vision. What is the most harmful mutation? 1). […]

Is E coli a vector-borne disease? Flies can carry diseases such as typhoid fever, cholera, and dysentery. Cockroaches can carry diseases such as Escherichia coli (E. Coli), and Salmonella food poisoning. Rats and mice can carry diseases such as rat-bite fever, leptospirosis, and Salmonella food poisoning. Can humans be vectors of disease? Many factors affect […]

What type of reaction forms disulfide bonds? Disulfide bonds in proteins are formed between the thiol groups of cysteine residues by the process of oxidative folding. The other sulfur-containing amino acid, methionine, cannot form disulfide bonds. How are disulfide bonds broken? Disulfide bonds can be broken by addition of reducing agents. The most common agents […]

What are the 6 types of land uses? * Intensive Uses includes the following land use categories: Single Family Residential, Active Farms, Potential Farms, Commercial, Vacant Commercial, Industrial, Government/Public/Institutional, and Utilities. The following analyzes the major existing land uses in the town in detail, as illustrated on Map 6-1. What are the 5 types of […]

Is it better to connect speakers in series or parallel? The Ω symbol is often used instead of writing “ohms”. If both speakers are 8 ohms or more, then the speakers can normally be wired in parallel. If the speakers are less than 8 ohms, then to be safe, you should wire them in series. […]

How do freedivers not get the bends? Free divers really don’t have to worry about decompression sickness (the bends) because they are not breathing compressed air underwater. They are simply taking a breath of air at the surface, descending, and returning to the surface with that same breath of air. Things just go back to […]