Category: Physics

What liquid is closest to blood? The fluid found inside the hollow coconut chamber, the coconut water, is a surprisingly good substitute, as it’s nearly identical to human blood plasma: it’s nutritive, sterile, and contains various minerals and amino acids. What fluid is closest to blood? Extracellular Fluid Plasma travels through the body in blood […]

Where is the highest concentration of ozone? stratosphere What two places is the ozone found? Ozone is found in two different layers in Earth’s atmosphere. “Bad” ozone is found in the troposphere, the layer nearest the ground. Tropospheric ozone is a harmful pollutant which forms when sunlight alters various chemicals emitted by humans. Which layer […]

Does time apart strengthen a relationship? Well, time apart can reignite that excitement of wanting to be together and prevents a rut from forming. “Missing each other even just for one day can offer a lot to your relationship. You may get so used to being around your partner that you start taking them for […]

What are two examples of frictional force? Everyday Examples of Sliding Friction Rubbing both hands together to create heat. A sled sliding across snow or ice. Skis sliding against snow. A person sliding down a slide is an example of sliding friction. A coaster sliding against a table. A washing machine pushed along a floor. […]

How many seats are required on a boat that is towing a water skier? three persons How much horsepower do you need to pull a skier? And 90 HP might be enough for a 20-foot boat to pull a skier, but you’re going to need more engine to ski behind a 26-foot boat. What are […]

How much CO2 does solar offset? Every kilowatt installed lowers your home’s carbon footprint by over 3,000 pounds annually. For the average five-kilowatt residential system, that means a reduction of more than 15,000 pounds of CO2 every year! What percent of electricity comes from coal? 19.3% What is the most valuable coal? Anthracite What is […]

What color tint is best for night driving? Night driving glasses are available in many shades of yellow and amber. The darkest lenses filter out the most glare but also, the largest amount of light, making it hard to see in dim or dark conditions. Some wearers of night driving glasses report that they’re better […]

What is the best first move for White in chess? The Most Popular Chess Opening for White Pieces In modern chess, the most popular opening move for white is to immediately bring the king’s pawn forward two spaces. (This is notated as 1. e4.) The grandmaster Bobby Fischer called 1. Can you win chess in […]

Can you take a picture in space? Because the ISS moves so fast, the astronauts don’t have time to set up a camera for a shot or change lenses. To ensure they capture a great shot, astronauts always keep eight cameras at the ready in the cupola of the space station, so someone can grab […]

What is U T in signals and systems? The function u(t) can be seen as the limit of the above signal as delta tends to 0. Given this definition of Unit Step function we look into its derivative. The unit impulse function can be regarded as a rectangular pulse with a width of and height […]