Category: Physics

What are ionic compounds formed by? Ionic compounds are compounds composed of ions, charged particles that form when an atom (or group of atoms) gains or loses electrons. (A cation is a positively charged ion; an anion is a negatively charged ion.) Covalent or molecular compounds form when elements share electrons in a covalent bond […]

What happens if you drive over 50 on a spare? You should not drive over 50 mph and no more than 50 miles with a donut-type spare tire. Driving for long distances on a spare tire can potentially cause damage to other car parts, including the transmission. Is a spare tire the same as a […]

How do I find out what my meteorite is worth? Meteorites are quite valuable, worth as much as $1,000 per gram, according to the LiveScience website. Kellyco Metal Detectors posted on eBay that it can sell for $300 per gram or more — meaning 1 pound could be worth $1 million. “Meteorites are rarer than […]

What does it indicate if BOD is high? Higher BOD indicates more oxygen is required, which is less for oxygen-demanding species to feed on, and signifies lower water quality. Inversely, low BOD means less oxygen is being removed from water, so water is generally purer. What is COD and BOD of water? COD or Chemical […]

Who was one of the first scientist to realize the effects of CO2 in the atmosphere? Svante Arrhenius When was the last time the highest carbon dioxide was recorded in history? The highest recorded measurement in 2018 was 415.70 ppm on May 15, 2019, higher than it has ever been during human history. Yale’s Environment […]

Is leaning forward while sitting bad for your back? Simply put, leaning forward in an attempt to get closer to the computer screen increases the strain on the back, which may cause wear and tear on the joint surfaces, ligaments, and discs. The back muscles are continuously working to maintain the body in an upright […]

Are entering an expressway and are in the acceleration lane you should speed up to? You should speed up to. You’re entering expressway and you are in the acceleration lane you should speed up that will allow he or she to safely merge into an opening in traffic by the end of the acceleration [ […]

Why does a spoon in a glass of water look bent? A spoon half-immersed in a glass of water appears bent at the surface of the water. We know that this is due to refraction of light, which bends the rays of light at the surface, so that the retinal image of the spoon is […]

Does cactus need sunlight? Cacti and succulents thrive with good light sources, and it is best to place cacti and succulents in a bright place. A south facing position will provide good sunlight. However, be careful to not put them in direct sunlight because the intense light can make the plants turn a yellow colour. […]

How deep would you need to dive in order to have a pressure of two atmospheres? In order to get to 2 atmospheres worth of air pressure, you would need to get to the point where there’s 29.4 psi (2 times 14.7 psi). To get to 29.4 psi, it turns out that you would need […]