One gram of of the element radium generates approximately 1 curie of activity (Marie Curie, the woman after whom the curie is named, did much of her research using radium). (For an extensive explanation of nuclear materials and nuclear radiation, see How Nuclear Radiation Works.) Let's take...
Natural gas is measured in the U.S. at the level of domestic consumption in trillions of cubic feet (Tcf). Feet are an increasingly outdated form of linear measurement, and correspondingly, cubic feet (cf or ft3) are no longer a common unit of volume in the world at large, with meters...
Gasoline is a major recurring expense for many Americans. Discover how much the average person spends on gas each month.
同样,at most 意为“最多”,其中most是many/much的最高级形式,用法举例: You can borrow at most 3books one time from the library. 【当堂检测】 一、选择正确答案。 ()1. ---do you read?---I read every day. A....
How much heat does it receive? A homeowner is trying to decide between a highefficiency natural gas furnace with an efficiency of 97 percent and a ground-source heat pump with a COP of 3.5. The unit costs of electricity and natural gas are $0.115/kWh and $0.75/therm (1 the...
How Much Does a Storage Unit Cost? The monthly cost of your unit depends on a few things. The most obvious one is size, but temperature control, climate control, 24-hour access, and whether your unit is on the first floor or not all go into the equation. Location is another major var...
When the capacity of a heating or cooling unit is expressed in SCFM, these are the conditions the value assumes. Converting from SCFM to ACFM and back The ideal gas law, pV = nRT, gives us the relationship between pressure, volume, and temperature of an ideal gas, where n is the numbe...
Southeast Asia, which has a declining supply of natural gas available for export, cannot provide much natural gas to help the countries dealing with this intermittency problem. But, as we will see, Southeast Asia itself seems to have mostly stayed away from wind and solar. This is a plus. ...
Basically, I'm assuming the content is going from A→B through equilibrium states.) If the full content of the tank were a gas, the approximation to find the mass isn't too difficult depending on how much accuracy you want. Ideal gas law will give you a quick result since you already...
Expired gas analysis indirect calorimetry (EGAIC) is considered the gold-standard in measuring human energy expenditure through pulmonary gas exchange [9, 10]. The application of calorimetry in sport and medical physiology often utilises EGAIC to determine individual energy expenditure by measuring the...