How is friction charged by the body? When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be ‘rubbed off’ one material and on to the other. The material that gains electrons becomes negatively charged. How is friction charge produced? When a conductor or material […]
What is difference between humidity and relative humidity?
What is difference between humidity and relative humidity? Humidity is the amount of moisture or water present in the air in the form of water vapors. It is measured in grams of water in a letter of air (mass/volume). Relative humidity is the percentage of the moisture against the highest possible level of moisture in […]
What are disadvantages of steaming?
What are disadvantages of steaming? Steaming foods takes longer than cooking with other methods because it does not use super high heat. It also does not produce a high enough heat to safely cook such meats as beef and pork; you are pretty much limited to fish and poultry. Steam heat is essentially water that […]
Can Antibiotics kill viruses?
Can Antibiotics kill viruses? Antibiotics do not work on viruses, such as those that cause colds, flu, bronchitis, or runny noses, even if the mucus is thick, yellow, or green. Antibiotics are only needed for treating certain infections caused by bacteria, but even some bacterial infections get better without antibiotics. Is there a virus that […]
Which fabric is the best insulator?
Which fabric is the best insulator? Wool fibers are woven tightly together, and are much thicker than other materials, such as cotton. They don’t allow much heat to escape, which means they are great insulators. Fabrics like cotton and lace are breathable fabrics, meaning they allow a great deal of heat to escape. Is felt […]
What is the advantage of CCD scanner?
What is the advantage of CCD scanner? In general, CIS allows the construction of smaller sizes as well as lower power consumption, while CCD technology allows a higher depth of field, higher speed and signal noise ratio and better colour accuracy – so higher quality and productivity. What cameras have CCD sensors? CCD Still Has […]
How much electricity does the average Australian household use?
How much electricity does the average Australian household use? An average Australian house consumes electricity amounting to 18 KiloWatt(KW) per day or 6570 KW per hour. What is the average home electric consumption? In 2019, the average annual electricity consumption for a U.S. residential utility customer was 10,649 kilowatthours (kWh), an average of about 877 […]
How can I charge my phone without a charger?
How can I charge my phone without a charger? All of these methods require either a charging cable that’s compatible with your iPhone or Android device or a wireless charging pad. Use a USB Port to Charge Your Phone. Charge Your Phone With a Battery Pack. Hand-Crank Chargers for Emergency Phone Charges. Use an Eco-Friendly […]
Does heat change mass?
Does heat change mass? All internal energy such as thermal, rotational, and internal potential energy contributes to the rest mass of an object. So, yes, a hot object has greater rest mass and would weigh more when measured, if a scale were sensitive enough. Does heat effect mass? In almost every chemistry and introductory physics […]
What human activities are affecting climate?
What human activities are affecting climate? Humans are increasingly influencing the climate and the earth’s temperature by burning fossil fuels, cutting down forests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming. What are the main causes of climate change? […]