How do skiers reduce drag? Skiers can reduce drag by performing an effective ‘tuck’. To do a tuck, lower your stance and level your back parallel to the slope. This position means less wind hits your body, and the eggs-with-legs shape lets wind cut around you, reducing drag even further. Why do longer skis go […]
How do you find boiling point with temperature and pressure?
How do you find boiling point with temperature and pressure? If the boiling point values for a specified substance at a specified BP temperature and pressure are given, one can determine the Boiling Point at different vapor pressure values using the Clausis-Clapeyron Equation. The Clausis-Clapeyron Equation is derived from VP2=VP1e−ΔHvRT at two different temperatures. What […]
What is gamma spectroscopy used for?
What is gamma spectroscopy used for? Gamma-ray (γ-ray) spectroscopy is a quick and nondestructive analytical technique that can be used to identify various radioactive isotopes in a sample. In gamma-ray spectroscopy, the energy of incident gamma-rays is measured by a detector. How do we measure gamma rays? Scientists can use gamma rays to determine the […]
What happens if a plane is too heavy?
Does protist have DNA?
Does protist have DNA? Characteristics of Protists. Like all other eukaryotes, protists have a nucleus containing their DNA. They also have other membrane-bound organelles, such as mitochondria and the endoplasmic reticulum. Most protists are single-celled. Is fungi plant or animal? Fungi are not plants. Living things are organized for study into large, basic groups called […]
Under what condition concave lens form a real image?
Under what condition concave lens form a real image? Real images can be produced by concave mirrors and converging lenses, only if the object is placed further away from the mirror/lens than the focal point, and this real image is inverted. What does a concave lens do to an image? A lens refracts light and […]
Can gravitons be detected?
Can gravitons be detected? We attempt to answer Dyson’s question and find it is possible concoct an idealized thought experiment capable of detecting one graviton; however, when anything remotely resembling realistic physics is taken into account, detection becomes impossible, indicating that Dyson’s conjecture is very likely true. Are gravitons affected by gravity? If gravitational waves […]
What does 4 mean in the formula 4na2so3?
What does 4 mean in the formula 4na2so3? Answer: The ‘4’ in front of sodium sulfate formula indicates that there are four molecules of sodium sulfate. What does the 4 mean in the formula 4na2so3 there are four atoms of sodium there are four atoms of sodium sulfite There are four molecules of sodium sulfite […]
Which is better heat pump or electric furnace?
Which is better heat pump or electric furnace? Heat pumps have a cheaper monthly heating cost than electric furnaces. Heat pumps transfer heat from outdoor air, so they use less energy (up to 50% less electricity) than electric furnaces, which heat air directly. However, electric furnaces are better than heat pumps in one way… What […]
Is a cookie sheet an insulator?
Is a cookie sheet an insulator? It stops the flow of energy from moving through the material. Many objects that are meant for holding hot objects (soup containers, handles of pots and pans) are made out of heat insulators so that the heat will not transfer through the area it touches. For example, Ted is […]