How do I know how much wrapping paper I need? The height of your paper needs to be enough to wrap around the box, plus one to three inches to allow for overlap. For example, if the three-inch-high box is four inches deep, the paper should be 3+4+3+4+2 — so 16 inches tall. The easiest […]
What limits the resolution of a telescope?
What limits the resolution of a telescope? The resolution of a telescope is its ability to separate two point sources into separate images. Under ideal conditions, such as above the atmosphere where there is no turbulence (seeing), the resolving power is limited by diffraction effects. What is the limit of resolution? The limit of resolution […]
What is fluid power technology?
What is fluid power technology? Fluid power is the technology of generating, controlling, and applying smooth, effective power of pumped or compressed fluid, either a liquid (hydraulics) or air (pneumatics) to push, pull, rotate, regulate, or drive virtually all of the mechanisms of modern industry. How is power transmitted in fluid power? Hydraulic power, also […]
What is the coefficient of performance of the refrigerator?
What is the coefficient of performance of the refrigerator? The coefficient of performance, COP, of a refrigerator is defined as the heat removed from the cold reservoir Qcold, (i.e. inside a refrigerator) divided by the work W done to remove the heat (i.e. the work done by the compressor). How do you calculate the cooling […]
What are the 4 parts of a screw?
What is very important to remember when using a centrifuge?
What is very important to remember when using a centrifuge? If the liquid has a higher or lower density than water, you must balance the tubes by mass, not volume. The total mass of each tube should be as close as possible – this becomes increasingly important at very high rotor speeds. Running a centrifuge […]
What happens when TCC solenoid goes bad?
What happens when TCC solenoid goes bad? The main symptom of a TCC solenoid failure is the converter is not locking up. When the converter is not locking up you will notice the engine’s RPMs staying higher under load at highway speeds. Another symptom of a failed TCC solenoid is a fault code. How do […]
What is undercooling in refrigeration?
What is undercooling in refrigeration? The term subcooling (also called undercooling) refers to a liquid existing at a temperature below its normal boiling point. Normally, a refrigeration system has a subcooling stage, allowing technicians to be certain that the quality, in which the refrigerant reaches the next step on the cycle, is the desired one. […]
What is optimization query optimization methods?
What is optimization query optimization methods? Query optimization is the overall process of choosing the most efficient means of executing a SQL statement. SQL is a nonprocedural language, so the optimizer is free to merge, reorganize, and process in any order. The database optimizes each SQL statement based on statistics collected about the accessed data. […]
Why do ceramics have low thermal conductivity?
Why do ceramics have low thermal conductivity? In contrast to Metals Ceramics have low thermal conductivity due to Ionic-Covalent Bonding which does not form free electrons. Why is ceramic a good thermal insulator? For electricity to flow, electrons need to be moving. The type of ceramic used as an insulator doesn’t have any loose electrons […]