What is the cross sectional area of a 2 diameter pipe? Divide the pipe’s diameter by 2 to find its radius. If it measures, for instance, 8 inches in length, divide 8 by 2 to get 4 inches. Square this radius. In the example, 4^2 = 16 square inches. What is the formula for area […]
What is the difference between oxygen and sulfur?
What is the difference between oxygen and sulfur? There are four principal differences between the chemistry of sulfur and oxygen. Sulfur (EN = 2.58) is much less electronegative than oxygen (EN = 3.44). 4. Sulfur can expand its valence shell to hold more than eight electrons, but oxygen cannot. What are 5 uses for sulfur? […]
What is the difference between a closed and open electrical circuit?
What is the difference between a closed and open electrical circuit? An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout. A device designed to open or close a circuit under controlled […]
Is the caloric theory true?
Is the caloric theory true? The caloric theory is an obsolete scientific theory that heat consists of a self-repellent fluid called caloric that flows from hotter bodies to colder bodies. Caloric was also thought of as a weightless gas that could pass in and out of pores in solids and liquids. Who disapproved the theory […]
Why is the difference between the wet bulb temperature and the dry bulb temperature is always 0 OC when the relative humidity is 100%?
Why is the difference between the wet bulb temperature and the dry bulb temperature is always 0 OC when the relative humidity is 100%? The thermometers are whirled until the wet bulb is dry. When the air is saturated with water vapor, then the water on the wet bulb cannot evaporate. Therefore, there is little […]
What is the magnitude and direction of the force?
What is the magnitude and direction of the force? A force has both magnitude and direction, therefore: Force is a vector quantity; its units are newtons, N. Forces can cause motion; alternatively forces can act to keep (an) object(s) at rest. Consider two forces of magnitudes 5 N and 7 N acting on a particle, […]
Why is climbing rope so expensive?
Why is climbing rope so expensive? The special quality of climbing rope makes it an expensive necessity for climbers. Mountaineers require a number of qualities in their gear that are not found in traditional rope. These features require special development, and expensive materials, resulting in a more costly final product. What is the strongest type […]
What is difference between meiosis 1 and meiosis 2?
What is difference between meiosis 1 and meiosis 2? Both produce two daughter cells from each parent cell. However, Meiosis I begins with one diploid parent cell and ends with two haploid daughter cells, halving the number of chromosomes in each cell….How is Meiosis I Different from Meiosis II? Meiosis I Meiosis II Ends with […]
Which website endings are most reliable?
Which website endings are most reliable? Here follows a list of the most common domain suffixes and the types of organizations that would use them. .com. Commercial site. .edu. Educational institution. .gov. Government. .org. Traditionally a non-profit organization. .mil. Military. .net. Network. How do I know if a source is reliable? The criteria are: Currency: […]
What is a dangerous PSI level?
What is a dangerous PSI level? Most passenger vehicles recommend 33 to 35 psi. At 28 psi, you’re running a little low and really should get them aired back up. That’s not what I would call alarmingly low, but anything more than three or four pounds below normal can cause handling problems and increases the […]