Who discovered electromagnetic spectrum? In 1887 Heinrich Hertz demonstrated the existence of the waves predicted by Maxwell by producing radio waves in his laboratory. It took a bit longer for scientists to discover the higher-energy (shorter wavelength) light in the electromagnetic spectrum. Where is WIFI on the electromagnetic spectrum? Wifi occupies the radio frequency band […]
Which gas is important for life?
Which gas is important for life? Carbon dioxide and oxygen are the gases in the atmosphere that are needed for life. Plants need carbon dioxide for photosynthesis. They use sunlight to change carbon dioxide and water into food. The process releases oxygen. Which is the warmest layer of the atmosphere? thermosphere What is unit of […]
What is a respectable marathon time?
How do you find partial pressure of oxygen?
How do you find partial pressure of oxygen? The alveolar gas equation is of great help in calculating and closely estimating the partial pressure of oxygen inside the alveoli. The alveolar gas equation is used to calculate alveolar oxygen partial pressure: PAO2 = (Patm – PH2O) FiO2 – PaCO2 / RQ. Which gas Cannot be […]
What RPM is most fuel efficient?
What RPM is most fuel efficient? In general, the economical band for petrol vehicles is between 1,500 and 2,500 rpm (for diesels it is between 1,300 rpm and 2,000 rpm), and these bands are the same for the vast majority of vehicles, Sale says. “The exception to the rules are vehicles which have either a […]
What is your maximum heart rate if you are 25 years old?
What is your maximum heart rate if you are 25 years old? To estimate your maximum age-related heart rate, subtract your age from 220. For example, for a 50-year-old person, the estimated maximum age-related heart rate would be calculated as 220 – 50 years = 170 beats per minute (bpm). Is it safe to exceed […]
Why do squirt bottles stop working?
Why do squirt bottles stop working? The piston automatically retracts after each spray, creating a vacuum in the chamber that sucks more fluid from the bottle though the tube. If your sprayer doesn’t work, it’s either because the nozzle is blocked, the piston seal is damaged or the inner tube isn’t immersed in fluid. How […]
Can a bug go inside your eye?
Can a bug go inside your eye? The transparent cornea of the eye contains many fine nerve fibers, which react very sensitively to touch and injury. That’s why it’s so uncomfortable when a foreign object like a grain of sand or a small insect enters the space between your eyeball and your eyelid, or gets […]
Who is responsible for creating the WBS?
Who is responsible for creating the WBS? A work breakdown structure cannot be developed in isolation. Rarely can one person know everything required to complete a project, least of all a project manager, who may not be a subject matter expert. Creating the WBS is a team effort. Which of the following is a planning […]
Which animal is found in water?
Which animal is found in water? In addition to water breathing animals, e.g., fish, most mollusks etc., the term “aquatic animal” can be applied to air-breathing aquatic or sea mammals such as those in the orders Cetacea (whales) and Sirenia (sea cows), which cannot survive on land, as well as the pinnipeds (true seals, eared […]