Category: Physics

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What is eDNA Metabarcoding? Environmental DNA (eDNA) metabarcoding is a novel method of assessing biodiversity wherein samples are taken from the environment via water, sediment or air from which DNA is extracted, and then amplified using general or universal primers in polymerase chain reaction and sequenced using next-generation sequencing to … What can eDNA tell […]

Does light occupy a single point in space? What it does have though is mass perceived due to the energy it contains and this should not be considered as its actual mass. As light does not have mass, it implies that light cannot occupy space. Why do Photons have no mass? Another answer is that […]

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What happens to a container of gas when the pressure is increased? If the amount of gas in a container is increased, the volume increases. If the amount of gas in a container is decreased, the volume decreases. If you heat a gas you give the molecules more energy so they move faster. This means […]

What happen with the mass of body when we take it to another place? Hence, weight of a body will change from one place to another place because the value of g is different in different places. For example, the value of g on moon is 1/6 times of the value of g on earth. […]

What are the different characteristics of waves? Waves are disturbances that travel through a fluid medium. Several common wave characteristics include frequency, period, wavelength, and amplitude. There are two main type of waves, transverse waves and longitudinal waves. Let’s talk about wave characteristics. How much time do you have to escape a tsunami? A tsunami […]

What are examples of dictatorship? Explore a few famous dictatorships, including where they were, time, and the dictator that ruled. Wallachia – 1456 to 1462 – Vlad III. Soviet Union – 1917 to 1924 – Vladimir Lenin. Soviet Union – 1964 to 1982 – Leonid Brezhnev. Germany Empire – 1888 to 1918 – Kaiser Wilhelm […]

Does heat or air kill germs? Air temperature is key for bacteria. In general, cold air kills germs while warm air incubates them. What do hospitals use to sanitize the air? Ethanol and ammonia are commonly found in disinfectant agents, and formaldehyde in laundry detergents. As these products are used in such large quantities within […]

Why are lays so empty? The cushion actually is nitrogen gas. Chip manufacturers fill bags with this preservative gas to help keep chips fresh. If it were filled with regular air, the chips would likely turn soggy and spoil. Why are crisp bags so empty? Manufacturers claim the space left in crisp packets is needed […]