What is a good U-value? The best insulating materials have a U-value of close to zero – the lower the better. Building regulations currently stipulate that for a new building, the elements must have maximum U-values as follows: Wall – 0.3 W/m2k. Roof – 0.15 W/m2k. What is a good window U-value? In a cold […]
What is the purpose of a scientific law quizlet?
What is the purpose of a scientific law quizlet? describes an observed pattern in nature with no explanation. it is an expectation of what scientists think will happen under the same conditions. You just studied 2 terms! What best defines a scientific law? In general, a scientific law is the description of an observed phenomenon. […]
What is the use of frequency table?
What is the use of frequency table? The frequency table records the number of observations falling in each interval. Frequency tables are useful for analyzing categorical data and for screening data for data entry errors. Note that we will refer to two types of categorical variables: Categorical and Grouping or Break. How do you estimate […]
Why does white light look blue?
Why does white light look blue? White light is a mixture of all wavelengths in visible spectrum. The blue glass has a property to absorb all colors except blue. Hence only blue is transmitted and thus the light seems to be blue. How do you reverse blue light damage? Try the “20-20-20” rule. Every 20 […]
How do you find the radius of BCC?
How can I reduce EMF in my home?
How can I reduce EMF in my home? Remove as many electronic devices from your bedroom as possible. This includes using battery operated alarm clocks, moving the bed away from ‘charged’ walls, and even shutting off the electricity to your room during bedtime. Try and also charge your electronics in another room whilst you’re sleeping. […]
Are humans made of carbon-12?
Are humans made of carbon-12? The most important structural element, and the reason we are known as carbon-based life forms. About 12 per cent of your body’s atoms are carbon. How much of the human body is carbon 12? Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium….Elemental composition […]
How does political corruption affect the economy?
How does political corruption affect the economy? Corrupted economies are not able to function properly because corruption prevents the natural laws of the economy from functioning freely. As a result, corruption in a nation’s political and economic operations causes its entire society to suffer. How does corruption violate human rights? Corruption in the judicial sector […]
What are three common types of optical instruments?
What are three common types of optical instruments? There are three main types of optical telescopes: refractive, reflective, and catadioptric. How are concave mirrors used in everyday life? Concave mirrors are used in reflecting telescopes. They are also used to provide a magnified image of the face for applying make-up or shaving. Concave mirrors are […]
How do you find the specific resistance?
How do you find the specific resistance? Specific Resistance (”ρ”) is a property of any conductive material, a figure used to determine the end-to-end resistance of a conductor given length and area in this formula: R = ρl/A. Specific resistance for materials are given in units of Ω-cmil/ft or Ω-meters (metric). What are the two […]