Is it safe to have a magnet near your heart? According to Swiss researchers some magnets which are used in many new commercial products can interfere with implanted heart devices such as pacemakers and the consequences can be fatal. Can magnets damage your phone? While your screen or data isn’t threatened by magnets, your phone’s […]
Is isentropic adiabatic and reversible?
Is isentropic adiabatic and reversible? A reversible, adiabatic process is always isentropic since no entropy generation due to irreversibilities (sgen=0) and no change of entropy due to heat transfer (ds=? Q/T=0). Are Stirling engines still used? They carry compressed oxygen to allow fuel combustion submerged, providing heat for the Stirling engine. They are currently used […]
How do liquid molecules move?
How do liquid molecules move? In liquids, particles are quite close together and move with random motion throughout the container. Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles. Which state of matter are molecules moving the fastest? Phases of matter A […]
Why is sterling silver so cheap?
Why is sterling silver so cheap? This is a serious issue because many jewelers are known to sell fake sterling silver necklaces, rings, earrings and so on. Sterling silver is much cheaper than costlier metals such as gold, and yet, fake imitations of sterling silver jewelry are wildly sold in the market. What is the […]
When would you use a topographic map?
When would you use a topographic map? A topographic map is a detailed and accurate illustration of man-made and natural features on the ground such as roads, railways, power transmission lines, contours, elevations, rivers, lakes and geographical names. The topographic map is a two-dimensional representation of the Earth’s three-dimensional landscape. What are the disadvantages of […]
What is psychophysical theory?
What is psychophysical theory? Psychophysics has been described as “the scientific study of the relation between stimulus and sensation” or, more completely, as “the analysis of perceptual processes by studying the effect on a subject’s experience or behaviour of systematically varying the properties of a stimulus along one or more physical … Why is psychophysics […]
How does mass affect a chemical reaction?
How does mass affect a chemical reaction? 13.2 Conservation of atoms and mass in reactions (ESADV) Also, the number of atoms in a reaction remains the same. Mass cannot be created or destroyed in a chemical reaction. The law of conservation of mass states that the total mass of substances taking part in a chemical […]
How does vapor turn into liquid?
How does vapor turn into liquid? If heat is added to water, it evaporates. Evaporation turns liquid water into a gas called water vapor. If heat is taken away from water vapor, it condenses. Condensation turns water vapor into a liquid. What does water vapor look like? Water vapour is transparent. The small droplets that […]
Is the Blue Lagoon in the Golden Circle?
Is the Blue Lagoon in the Golden Circle? This tour is essential for all visitors as it includes Iceland’s best-known natural phenomena: Geysir geothermal area, Gullfoss waterfall, Þingvellir national park and the world-famous Blue Lagoon. The second part of the Golden Circle is the mighty waterfall, Gullfoss. Is Blue Lagoon worth the money? Although the […]
What is the purpose of series circuit?
What is the purpose of series circuit? Series circuits When a switch is in series with a device, it controls the device, allowing us to switch it on and off. For example, often lawnmowers have two switches in series with each other so that both switches need to be pressed before the mower will turn […]