Category: Physics

What is the principle of viscometer? These viscometers use the principle of ‘rotational viscometry’, i.e. their measurement of product viscosity is based upon immersing a specifically selected spindle within a sample of the product followed by measurement of the torque required to rotate the spindle at a set speed whilst immersed within the product sample […]

Can a dead tooth come back to life? Teeth are alive. Therefore, teeth can die. Root canal therapy (endodontics) can reclaim teeth after they have died. How long can a dead tooth stay in your mouth? Once a tooth is damaged or decaying, it’s only a matter of time before it dies. Depending on how […]

What are macromolecules give 2 examples? Plastics, resins, many synthetic and natural fibres (e.g., nylon and cotton), rubbers, and the biologically important proteins and nucleic acids are among many substances that are made up of macromolecular units. Insulin, a protein hormone, is an example of a macromolecule. What are some examples of macromolecules? Types of […]

What are the 5 stages of decision making? 5 Steps to Good Decision Making Step 1: Identify Your Goal. One of the most effective decision making strategies is to keep an eye on your goal. Step 2: Gather Information for Weighing Your Options. Step 3: Consider the Consequences. Step 4: Make Your Decision. Step 5: […]

Is a line a vector? Vectors are not lines and they have a very different function than lines. A vector is a direction and a magnitude, that’s it. A line, of course, has direction and magnitude, but it also has LOCATION. A vector can be anywhere, but a line exists within space. Can a set […]

What material absorbs sound waves? In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators – absorbing most sound, whereas dense, hard, impenetrable materials (such as metals) reflect most. Is styrofoam a good sound blocker? Polystyrene foams such as Styrofoam can help muffle and reduce the presence of any noises from […]

What are the common names for the four major kinds of echinoderms? The common names for the four major kinds of echinoderms are sea star, sea urchin, sea cucumber, and flowery sea lilies. What are 4 types of echinoderms? Classes of Echinoderms. The phylum echinoderms is divided into five extant classes: Asteroidea (sea stars), Ophiuroidea […]

Do any animals live in Lake Natron? While it may be paradise for haloarchaea, many creatures can’t survive in such alkaline waters – but animals whose bodies are adapted to such pH levels also inhabit the lake, meaning Lake Natron is far from barren. Flocks of flamingos, other birds and tilapia fish all call the […]

What are the biggest stars in the Milky Way? Top 10 largest stars in the Milky Way Antares. Size: 883 x Sun. Distance from Earth: 550 light-years. Betelgeuse. Size: 887 x Sun. Distance from Earth: 643 light-years. KW Sagittarii. Size: 1,009 x Sun. VV Cephei A. Size: 1,050 x Sun. Mu Cephei. Size: 1,260 x […]

Is speed a unit? Speed can be thought of as the rate at which an object covers distance. Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the […]