Why there is fall in temperature with altitude? As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases. If the humidity is at 100 percent (because it’s snowing), the temperature decreases more slowly with […]
Why is friction so important to a moving vehicle?
What is the ideal fall for a driveway?
What is the ideal fall for a driveway? The fall required for Good Drainage is between 1:60 and 1:80. The major factor that affects this is the material, with solid surfaces like Concrete and Tarmac needing the steeper 1:60 Blocks and paving can usually get away with the shallower angle. What is the maximum driveway […]
When you see a divers down flag you must?
When you see a divers down flag you must? Vessels must remain at least 50 feet away from the flag. If they have to approach the diving area, operators must have permission from the person who placed the flag or the boat displaying the flag. Outside of 50 feet, vessel operators must operate at “idle […]
Are alkyl halides acidic or basic?
Are alkyl halides acidic or basic? Terminal alkynes and acetylene are mildly acidic. The haloalkanes or alkyl halides are a group of chemical compounds, derived from alkanes containing one or more halogens. They are a subset of the general class of halocarbons although the distinction is not often made. Is Cl or Br a better […]
What is the healthiest job to have?
What is the healthiest job to have? On the World Health Day, here’s a look at some of the best jobs for your health: Fitness Trainer. No surprises here. Health Professionals. Chiropractors, dentists, medical technicians and physical therapists have the best of both worlds. Landscaper. Nutritionist. Software Engineer. How much is the wellness industry worth […]
How is parallax distance calculated?
How is parallax distance calculated? Parallax Formula: p = parallax angle in arcseconds. d = distance in “Parsecs” Writing our parallax formula in this way allows us to define a new “natural” unit for distances in astronomy: the Parallax-Second or Parsec. What is the purpose of parallax error? It is an error caused by people […]
Why is it important to study the stars?
Is bullet proof glass expensive?
Is bullet proof glass expensive? Depending on the size and type of bullet-resistant glass, it can cost between $25 and $100 per square foot. Although polycarbonate plastic can bond with glass to resist bullets, paper towels can scratch its surface and ammonia-based window cleaning liquids will damage the material. Do ex presidents have Secret Service […]
What is called metal and nonmetal?
What is called metal and nonmetal? Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal. Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators. What is difference between metal […]