Physical properties are those properties which are natural in the material and cannot be permanently altered without changing the material itself, include: weight , [小题1] , thermal and electrical conductivity , rate of thermal expansion, and melting point.A...
What is the properties of electric charge? Why k is infinity for conductors? Explain the following term: Thermal conductivity in insulators. Then explain its formula and compare it with thermal conductivity in metals. Discuss the electric nature of conductors. ...
Explain why, under static conditions, all points in a conductor must be at the same electric potential. At the atomic level, what is meant by saying, "something is electrically charged"? Define the term center of gravity. How will we define charge?
What is the term for the period during diastole when the pressure in the atria exceeds the pressure in the ventricles? Define cardiac cycle. What occurs in the heart during the P-R interval? What are the names of each of the phases of the cardiac cycle?
Magnetic permeability can be calculated by multiplying the permeability constant by the relative permeability of the material. It is often measured in units of H/m or Wb/A.m or N/A^2. What is meant by the permeability of free space? The permeability of free space is a special constant th...
Mass is defined as the amount of matter in an object while weight is defined as the force exerted by an object. SI unit of mass is kilograms while SI unit of weight is Newtons. Object weighing 1 kg mass will have 9.8 N weight.
Because here is the deal: the thing about marrying yourself is not just like cohabitating. You’re not just going to date for a while and see how it turns out. You are going to do this till death do you part. 答案是,是的。因为嫁给自己并不是像同居那样,你不能约会一段时间再看情况...
What is meant by flame photometry? :a spectrophotometer in which a spray of metallic salts in solution is vaporized in a very hot flame and subjected to quantitative analysis by measuring the intensities of the spectral lines of the metals present. ...
know who it is before you answer…and you don’t have caller ID…You know what a friend is going to say-right before they say it…You take a different route home than usual, for some strange reason, and see on the news when you get home the four car pileup you missed by doing ...
The calibration procedures for most conductivity meters are quite similar. The procedures typically involve using a conductivity standard to determine the meter's accuracy. The meter reading is then adjusted to meet the value provided for the standard. C