Category: Physics

Is Pi a Radian? Radians are not measured in Pi, they are just a number. A radian is defined as the ratio between the length of a circular arc and the radius of the circle. For example if the arc goes around 360 degrees (a full circle), the radians are 2PiR divided by R. The […]

What is the major function of the respiratory system? Your respiratory system is the network of organs and tissues that help you breathe. This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood. How many organs are in […]

What is a Clothoid loop? A clothoid is a section of a spiral in which the radius is constantly changing. Unlike a circular loop in which the radius is a constant value, the radius at the bottom of a clothoid loop is much larger than the radius at the top of the clothoid loop. Why […]

How low can you set thermostat in winter? Wondering what temperature to set your thermostat when you’re away during winter? According to the U.S. Department of Energy, “When leaving on vacation — usually more than three days — set your thermostat to 50-55 degrees Farenheit in the winter to prevent against freezing pipes.” When should […]

What is host name in computer? In computer networking, a hostname (archaically nodename) is a label that is assigned to a device connected to a computer network and that is used to identify the device in various forms of electronic communication, such as the World Wide Web. In the latter form, a hostname is also […]

How do you calculate light? Determine the Needed Lumens A lumen is a unit measurement of light. To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. How many lights […]

How do you find order of magnitude? Order of magnitude is usually written as 10 to the nth power. The n represents the order of magnitude. If you raise a number by one order of magnitude, you are basically multiplying that number by 10. If you decrease a number by one order of magnitude, you […]

Why am I static all the time? Very dry air and cold weather increases static electricity, so static shock takes place more often in the winter when the air is especially dry. It’s the reason why your hair is a frizzy mess, your clothes look disheveled, and you get a shock each time you reach […]

What are the 4 types of minerals? Types of minerals Native elements. eg. Gold, Silver, Mercury, graphite, diamond. Oxides. eg corundum (incl. sapphire), hematite, spinel. Hydroxides. eg. Goethite, brucite. Sulfides. eg. Pyrite, galena, sphalerite. Sulfates. eg. Baryte, gypsum. Carbonates. eg. Calcite, magnesite, dolomite. Phosphates. eg. Apatite, monazite. Halides. eg. What are the 2 main types […]

What lives in a marsh? Animals like mink, raccoons, opossums, muskrats, beavers, frogs, turtles and lots of species of birds and insects are common in marsh lands. Freshwater marshes can vary in size from very small to very large! The largest freshwater marsh in the United States is the Florida Everglades. What lives in a […]